Tag Archives: Modifications

Adapting Our Bike Rack for e-Bikes

31 Tuesday May 2022

Posted by in Accessories, Amarok, Bike Carrier, Bike Rack, e-bikes, MiRider, Modifications, VW Amarok

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Getting to that certain age brings on some restrictions…. My left knee is a bit suspect and Sue’s hip is not as ‘hop’ as it was anymore, This meant of we haven’t been using our bikes as much and as Sue has now officially retired and Henry has settled in to caravanning we are getting out and about more in the caravan.

We had been mulling over e-bikes for a while and after being influenced by John & Mandy who used to live in the next “village” to us, watching Neil and Emma from Urban Vanlife and having a long conversation with a gentleman who was also staying at Wirral Country Park who had bought two MiRider One bikes for himself and his wife lead us to paying a visit to the MiRider factory in Wigan.

We had a try… and liked them almost immediately. One big question for me was would they mount OK on our existing rack above the bed of the Amarok. The guys there were great and allowed me to fit one of their test bikes and take some photos. It only needed a few tweaks here and there to accept the MiRider bikes without any issues.

Two days later we went back to pick our new bikes up. In the realities of todays internet, full disclosure – we paid full price for these two bikes, no discount, no “freebie’s” etc. so what I will say about them when it comes to a review will be honest comments.

The bikes fitted onto the racks easily, however I did want to move them forward as the existing setup was for two full size cross bikes which required some rear overhang. Moving to the MiRider e-bikes gave me the opportunity to move the bike mounts forward.

You can see the rear overhang in the photo above and the available space at the front. Sliding the rails forward and relocating the wheel mounts allowed the bikes to easily position forward of the rear tail gate.

The thing that now had me thinking was the weight distribution. The rear wheel is obviously heavier than the front, as it contains the electric motor and the battery is held in the frame forward of the pedal crank so weight across the two wheels is pretty much even. However, the overhang of the mounting rails meant the front wheel was well forward of the main cross bar.

This really could do with a support. So after putting my thinking cat on…. nope Henry wasn’t;t very helpful… In the best Baldrick fashion I came up with a cunning plan. The front of the pickup bed frame is quite strong and the strength was increased by the aluminium box that the Roll-N-Lok cover fits into.

I cut two pieces of 1.5mm steel sheet and bent them so as to fit under the lip of the Roll-N-Lok cover resting on the frame of the pickup bed and bent them to form a support under the bike mount rails. I made a couple of stop blocks out of recycled plastic to hold the supports to the mount rails.

The design means I can still remove the cover for the Roll-N-Lok to service it and I don’t need to use any tools to remove the brackets if I want to remove the whole thing from the pickup bed… just the 4 Thule key locks to release the whole bike rack from he mounting pads.

I gave the two brackets three coats of spray-on truck bed liner and let them harden for a couple of days before installing. Hopefully this should be enough.

All in, I think it looks OK and the functionality of everything still works. The bikes are secure with no flexing in the mount. We still have room for a narrow roof box or mesh cargo tray between the two bikes if we need more room. I always have the option of moving the bikes to one side and mounting a standard Thule roof box if we really get pushed for space.

Another little thing we can do is plug the bikes in to charge while travelling. I’m not sure how handy this will be, but its there just in case.

I hope this gives you some ideas for e-bike mounting options of your own. For us, it’s next stop Bridlington for a few days to do a bit of testing.

A Few Mods and Updates…

08 Sunday May 2022

Posted by in Accessories, Gadgets, General, Maintenance, Reviews, Tips, Water & Plumbing

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After our recent trip to Meathop Fell it was time to say goodbye to an old friend. We have had our leisure battery since 2011 and for 11 years it has given us great service. For the last year or so I have thought hard about converting over to Lithium and drew up plans for a high capacity charging link between the tow vehicle and caravan and converting the caravan over to a Victron based system. However I think that for this caravan it would not be worth it.

We had bought a 120Ah Numax battery (left one above) from ABS and it had worked well, even now it still hold a charge and is sitting in my workshop on trickle charge waiting for a project to come along. I went back to Advanced Battery Supplies and opted to go for a 120Ah AGM. It wasn’t too expensive and hopefully it will give us years of service like it’s predecessor. I’ve used ABS for batteries a number of times over the past 12 or so years and can recommend them. I’m not sponsored by them and I paid for the battery but I have found that for me they give sensible advice and great service. That’s why I’m happy to mention them. You can call in personally or they do ship overnight ordering from their website – https://advancedbatterysupplies.co.uk

Battery taken care of now it was time to head into the workshop for a bit of construction….

Henry’s Conveyance Contrivance…

If you have read any of my posts over the last few years you will know that we have Siamese cats…. well sadly Oscar our health and safety officer passed away a while ago leaving us with just his brother Henry. Up to this point we have always had a cat sitter whenever we were away but June has now retired and honestly we could not face the thought of leaving Henry in a cattery or on his own with another cat sitter. So, a couple of exploratory trips up to the caravan for an hour just to let him sit in it and explore round lead us to a two night stay at Burrs Country Park…. only about thirty minutes away from home, that went well and so did the next trip to Meathop Fell. It was now time to build Henry a suitable transport platform for the vehicle.

Henry keeping an eye on the goings on at Meathop Fell

After a bit of head scratching I came up with this….

I built it out of 12mm Ply and painted it grey. I used an off cut of black car carpet to cover the top and sides and a couple of lengths of pipe insulation on the edges where it comes into contact with the car seat and door. To secure it I used the ISO FIX points and it takes less than 30 seconds to remove or install. Without Henrys carrying cage it’s a handy place to put things and the space underneath come in super handy for all my bits that I normally have rolling around on the floor behind the drivers seat. It’s high enough for Henry to be able to see out around in all directions and there is still enough space for two people to sit on the back seat and use the seatbelts if required.

We have used it for two trips now and Henry seems to like it. The rear windows are heavily tinted in our Amarok which will cut the heat from the sun and we can open the rear window for fresh air as required. We are looking round for one of the stick on baby sun screen thingy’s if we think the sun is going to be too strong. Of course we would never leave Henry in the vehicle unattended for more than a couple of minutes… the only time we have done this is while we were hitching up the caravan. If you know Siamese then you know they can be noisy talkative beings…. so far he’s not had anything to say about it. Is that a good sign?

Tempting Fate…

In the eleven years we have been at our storage site we have never had any break-ins but it’s aways in the back of your mind…. and couple that with us sometimes leaving Henry in the caravan while on site I decided a little security upgrade was required (there are others but I’m not going to tell you about them!) I’d looked at the various offerings of additional door locks and after some thinking… and several coffee’s decided to go for the Milenco Door Frame Lock Version 2 offering that allowed us to operate it from inside as well.

I ordered it via Amazon ( https://amzn.to/3sHywnd )and it arrived within two days. It was easy enough to install but I ‘upgraded’ the interior fitting with a custom stainless steel strengthening plate…

The stainless I used was 1.4mm tooled finish, cut to size and drilled using the template provided with the Milenco lock. After measuring the location, I bent the stainless on my sheet bender in the workshop. I chose the location as this was the strongest part of the door frame where the existing door lock was located and would help protect the original lock so a small extent. Ideally I would have liked the arm to have been a bit longer so it covered up the keyhole for the original lock. But I’m happy with it.

Down the drain…

Long time readers will remember that several years ago I wrote a post about how we solved our connection to the drain while on serviced pitches. After ten years of use It was time for an upgrade and I had seen the COLAPZ products and thought it was a rather nifty idea. Having a mooch round the web I ordered directly from the website https://colapz.co.uk/?ref=yjXJSsLdBkh5d and opted for the Flexi waste pipe kit – 8 pipes for £55.

The first use was great and easy to set up. No modification was needed to my original manifold that connects to the caravan and it seems to drain OK….

However you can alway improve on things…. and if you have ever watched any Youtube videos about American RV’s then you will know that for their ‘stinky slinky’s’ they have a few upgrades…. I ordered one from Amazon….

Camco 43041 15′ Sidewinder Plastic Sewer Hose Support – https://amzn.to/3Fp2elM it cost £44 and came all the way from the great state of New Jersey. It comes with a carrying handle and honestly is really easy to use. I just stretched it out and lifted the pipe on to it. It is designed for a 4 inch sewer pipe… but as I was using basically a 2 inch version it would allow the hose support to stretch even further… I bought the 15 feet version and I recon it would stretch to 20 feet without any problems.

When we were packing up, I ran all the remaining hot water down the sink to flush the pipework out… including the Colapz pipework and honestly when disconnecting everything it really wasn’t that dirty, but breaking it down into individual lengths makes it easy if it does need a brush through it (which you get by the way in the kit).

Again we are not sponsored by either of these two companies but the links above will earn us a few pennies that will help provide biscuits for Henry. You wouldn’t want Henry to mis out on biscuit treats would you….

After all he can’t survive on just belly rubs…. I know it’s blackmail but EVERYONE said you need a cute kitty to get more views!

Finishing Off A Few Jobs…

09 Thursday Sep 2021

Posted by in Accessories, Caravan Electrics, Caravan Restoration, Caravan Servicing, Caravan Window Repair, Gadgets, General, Modifications, Technical

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I’d got a few little jobs still outstanding from our big clean a week or so ago. The big one was to repair the front window. When we were cleaning the caravan I noticed that the bottom edge of the central window was starting to separate. After some lengthy procrastination I’d have preferred to replace it but given the hefty price tag and the “It will be January next year at the earliest before we can get you one” type answers from suppliers and removing the window and shipping to off to a company for repair would cost almost the same as a replacement.

It can’t be beyond a diy task to repair. I did a bit of searching for information relating to repairs and one name kept popping up as the manufacturer of the product used to bond the two sheets together…Bondrite Adhesives Ltd.

After reading through Bondrite Adhesives Ltd website a couple of times to work out exactly with adhesive I’d need I ordered their WC112 acrylic adhesive. The 50ml size was £12.10 plus shipping and VAT bringing the total to £20.52. It arrived within 24 hours of ordering, was really well packaged and came with a detailed technical sheet and guidance notes.

I’m not going to do a blow by blow account of how to repair a delaminated window… as I don’t know if this is even going to work, but my first step was to support the window as flat as I could. The standard recommendation is to remove the window lay it on a flat surface and go from there. I didn’t want to remove the window as all I had to repair was the lower edge.

Improvising I used two stands with a cross beam clamped between them to hold the window horizontal. This should take any flexing stress caused by the window stays out of the equation…. Hopefully!

To hold the gap between he two sheets I used three long needles from syringes… this allowed me just enough wiggle room to slide some blotting paper with a bit of isopropanol alcohol to clean out any contaminates. I’d already tested this to make sure it was safe and it does evaporate very quickly.

You are advised to lay down a 5mm bead of glue… as this was going to be difficult between the two sheets of partially bonded plastic I opted to use a wide bore syringe needle on the glue bottle which allowed me to squeeze glue into the gap… it was a bit fiddly but I managed to achieve what I thought would be the right amount. Sliding the three previous inserted needles out to allow the sheets to come together I used some fairly light clamps to hold the pieces together while they cured. Bondrite do caution about NOT using an excessive clamping force as it can lead to crazing of the sheets.

The data sheet advice is that handling strength is achieved after about 3 hours at 20 deg C. I covered up the glued area with microfibre cloths to protect it from the sun and had a sit down with an iced coffee and a sammich.

Next Job…

If you read my previous post “Put Your Lights On Mate…” then you might have picked up on my request at the end for any recommendations for a UK supplier of good quality replacement LED bulbs. Well Peter Farnham posted in the comments section and recommended Classic Car LEDS Ltd ( https://www.classiccarleds.co.uk ). A couple of days later I dropped them an email with a few questions and Duncan replied back with some details. A few more exchanges of emails ended up with me ordering replacement LED bulbs for the new fog lights, indicator lights and stop/tail lights. This is not a sponsored post and I paid the required number of beer tokens for these.

Not much to say on changing the bulbs over… what was noticeable was though they did have a bit heft to them… they seem really really well made. No flexing, solid and just had that feel about them that made me go “Mmmm” while nodding slowly…. almost in a Joey Tribbiani moment.

I did try to do before and after photos to compare the light output…. even tried a short video with one side changed over and the other side on conventional filament bulbs… all failed…. not as easy as it looks in strong sunlight even though the caravan rear was in shade. However the photo above is one side converted over. This is showing the indicator, tail light and fog light lit. The indicators are really bright. Having the LEDS the same colour as the lens works well. The tail light is a strong red and bright while the fog light looks washed out and white… it’s down to the fact that it is so bright its over exposed…. the exposure is correct for the indicator and tail light but the fog light is amazingly bright.. and red.

On the VW Amarok I haven’t had any canbus warnings… I even plugged in my reader to check… all good and no strobing or hyper flash.

To say I’m chuffed with these LED bulbs is a bit of an understatement… if you suffer from rear light envy as you follow one of those gloriously illuminated trucks down the motorway, drop Duncan an email at sales@classiccarleds.co.uk and tell him I sent you. Sort out your rear lights and never again have someone with four megawatts of light bars and spots flashing you and shouting “Put Your Lights On Mate” as they simulate a starship going into warp drive passing you.

Another small job next…

I’d had this gadget for a while and I can’t remember where I got it from. I think it was from a caravan shop at a dealer near York that we visited a while ago.

Simply it’s a security head bolt with a hardened shroud that replaces the normal jockey wheel clamp handle. When it’s installed it is flush with the A frame cover and pretty difficult to get to. It comes with a short handle and socket that fits the security bolt head. I did try with a couple of sockets but the shroud makes it almost impossible to even knock a socket on with a hammer. So if anyone want’s to nick the caravan they now also have to contend with the hassle of getting round my jockey wheel clamp. As I always leave the caravan nose high in storage you can’t even pick it up and drop it on to a tow ball. Hey if it makes them try elsewhere… it works for me.

Thinking about the next step…

This is going to be a big one. I’ve been planning this for a few weeks now and it involves two or three drawings… some detailed planning and I’ve been checking equipment specs in detail. The last stage was to sit and stare at the space available in the caravan and work out Tetris style how it is all physically going to fit in and how much of the existing kit will be removed. More to come soon!

Back to the window…

OK I bet you have been wondering how I got on. Well after nearly five hours of curing time I disassembled my contraption holding the window open and it seems to have worked OK. I can see that it has bonded all along the bottom edge. I could have put a bit more glue in at one spot and needs a light clean up all along the bottom edge to remove what has oozed out. I’ll leave that for at least another 48 hours before attempting to gently sand it off.

All in all I’m pleased with the result and hope to see that it will stand up to the test of time.

“Put your lights on mate…..”

28 Saturday Aug 2021

Posted by in Accessories, Amarok, Caravan Electrics, Caravan Road Lights, General, Maintenance, Modifications, Projects, Technical

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How many of you have driven behind a vehicle in less than ideal conditions… going dark, raining or foggy… and uttered those immortal words “Put you lights on mate” in the vein hope it will do some good only to approach a bit closer to find that the lights are on and are less effective as a couple of Ikea tea lights in jam jars. That is the feeling I get with a lot of caravans. In my opinion a lot for rear lights are less than ideal. In this day and age some of the drivers out there need all the help they can get as they even struggle to notice a big white box in front of them in bright sunshine let alone in inclement weather or in the dark.

Our caravan like a lot of other Swift caravans looks great from the rear with nice big lights and reflectors. Reflectors are good if the following driver has turned his headlights on and not been too busy texting and simply relying on the DRL’s to light the way. The big reversing lights will surly let the driver and anyone else behind know you are reversing… but about as useless as the aforementioned Ikea tea light in a jam jar when reversing at an angle into a pitch at night. The rear fog light however deserves a special mention… the single rear fog light…. can you see it… the tiny Lego brick sized rear fog light… the red thing in the middle down low… difficult to spot on a stationary caravan in daylight let alone from a distance on a road in fog. Mind you when that bit of wire in the bulb warms up it will blind you… honestly it will…. eventually… when you get so close because you didn’t see it from ten metres away.

Its time for a change. An upgrade if you will… to allow me to shine a beacon of light towards all that follow. But… and here’s a the big thing… I have to keep it looking nice. Everyone likes a nice rear don’t they.

OK, I searched for all the replacement options. Swift don’t make it easy. The two panels that the lights are mounted in don’t come out, well not easily and I was cautioned about even attempting to remove them. Changing to smart round LED lights was out. Then it struck me… the reversing lights could become fog lights and I would install new reversing lights. I’d towed a trailer a while ago that had football stadium sized reversing lights and wow what a difference it made. One of the first things I did with the Amarok when we got it was to install LED work lights under the rear bumper as reversing lights and that was a huge improvement so I ordered another set from the same company as I’d fitted to the Amarok.

A bit more searching I found the exact lenses for the existing lights in red to turn the reversing lights into fog lights.. it was actually cheaper to order a pair of complete lights than it was to order two replacement red lenses… I’ll never work that one out.

Ok how was I going to wire this lot up. I made a couple of brackets that fitted under the caravan allowing me to mount the reversing lights up close just inboard of the rear steady jacks. This would offer a modicum of protection from road debris thrown up by the tyres. These could be wired to run off the old fog light which would now become a junction box and the reverse lights would become the fog lights, so simply switching the reverse light and fog light cables over at the road light fuse box in the front of the caravan would have everything working correctly.

I also angled the reversing lights out slightly. I wanted the centre of their light pool to be along an extended side line of the caravan so that looking through my mirrors down each side of the caravan would be the centre of the lit area. This hopefully would provide the best angle of illumination when reversing and performing a reversing turn onto a pitch.

“Hang on lads… I’ve got an idea”

Cue the music… no, no doors were blown off during this mod. Right what if the new rear fog lights could be my brake lights when they weren’t being used as fog lights?

A simple diode blocking bridge using two diodes could do this quite easily. Routing through my electronics spares I found a bag of 10 Amp diodes which would easily cope with the task.

For a quick solution I used two strips of terminal block and built a quick blocking bridge. What happens now is applying the brakes powers up the brake light circuit and the fog lights. The diode in the fog light circuit stops me back feeding current to the tow vehicle fog light circuit.

Turning on the fog lights powers up the fog lights and the diode in the bridge stops it powering the brake lights in either the caravan or back feeding to the tow vehicle. Really simple and when testing I didn’t have any canbus or other errors thrown up by the VW Amarok’s management system. The existing (and original) brake and tail lights work as normal.

I’ll have a look at coming up with a better solution than using two lengths of terminal strip and probably build something in a small electrical project box so it can be mounted securely.

As far as I can tell the changes I’ve made all fall in line with the lighting regs for trailers. While I’m 99% sure, there is always the possibility that I could be corrected and shown the error of my ways and point out I have missed something in my reading of the regs. I’ll let you know.

The next thing…

I’m trying to find some good quality bright LED replacement bulbs for all the rear road lights. I have some, but I suspect they are not correctly marked. If anyone has any recommendations for replacement 25W and 5/25W bulbs that they deem are good options to look at, especially if they are correctly marked, please let me know in the comments. If you are a company that sells LED replacement bulbs and think they are the good enough to pass the Caravan Chronicles testing department (we don’t actually have a testing department… its just me) then challenge me to break them!

Safe travels everyone… and “PUT YOUR LIGHTS ON MATE”

Mirror Mirror…

15 Monday Apr 2019

Posted by in Accessories, Amarok, General, Modifications, Projects, VW Amarok

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A couple of eagle-eyed mirror aficionados have spotted that we use Milenco Grand Aero 3 towing mirrors… but they also spotted that there was something different about the mounts. OK I’ll have to admit you are an eagle eyed bunch!

On the Amarok, the mirrors are quite big and if I get them adjusted about right I can just see down both sides of the caravan… we’re not 8 foot wide. However, driving without mirrors is more likely to attract attention and it’s easier and safer just to fit a pair. I first went for a brand that I’d used on the Land Rover Freelander, however the Amarok’s mirrors are quite deep and it wasn’t till I tried them that I realised how much of an issue that was….

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The other issue I had… I didn’t particularly like the fitting….. it was about on the limits of extension and about 25% of the mirror was obscured by the Amarok’s door mirror… just at the point the would allow you to see the wheels of the caravan. Not ideal.

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So I looked round for a mirror that would move the face of the mirror rearwards in about the same plane as the normal Amarok mirror. The added depth of the Milenco Grand Aero looked as though it would do the job perfectly.

Actually it was a little too much. As the mounting for the mirror was now on the door mirror plane, not as the previous mirror the back of the mirror housing it shifted the face of the Grand Aero too far rearwards. I liked the vision the Grand Aero gave and the mounting.

To the Bat Cave…

I just happened to have some lengths of 12mm steel tubing and a bending tool. Maybe I could solve the problem without searching round for other products.

I used a welding rod to hand bend a profile that seemed to put the mirror into the right position. I worked out I’d only need two bends to get the mirror in the right position.

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I installed the two mounting brackets on the door mirror in the final position I wanted them and slid a length of tube into them. Marking where I wanted the first bend to be and using an angle finder to approximate the angle that would move the mirror far enough forward so the face was in line with the door mirror face… this then gave me the point to start the bend upwards to get the mirror at the correct height.

Ok before I get a lot of comments asking why installed the mounts on the lower edge of the mirror… two reasons…. if they do move about or squish down on a bit of grit any scratches won’t be seen in the painted area of the door mirrors and from the driving position they don’t obscure my view if I have to look past the top of the door mirrors. I’ve also noticed when its raining I don’t get nearly as much water running down the face of the door mirror. And another reason…. the bottom of the door mirror on the Amarok is not quite as curved and the clamps fitted more securely. I’ve got everything dialed in now to the point where I don’t actually need to adjust the mirrors each time I fit them.

At this point I hadn’t cut the tube to length on the vertical section so I had the chance to adjust the height of the Grand Aero. After a bit of trial and error that involved a clamp and running round to the driver’s seat… and back again to adjust I got what I thought was the right height for me.

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As you can see in the photo above, the reflective face of both mirrors is in near perfect alignment… and for me that makes it easy when driving as I don’t have any perceived shift in focus. The picture below is from the drivers position… I put the camera as close as I could to where my eyes are and I get a great view rearwards. Note that installing the mounting clamps on the bottom edge of the door mirror does not block the forward side view over the door mirror.

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The driver’s side was bent the same… just opposite ‘handed’ and the length worked out right for the height too.

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When seen from the front… even though I’m not quite ‘square on’ to the caravan, I’m angled slightly to the left when sat in the drivers seat, the mirror is fully outside the extended side line of the caravan giving me a great view.

To finish…

I gave the now bent and drilled tubes a light emery and de-grease followed by  couple of coats of grey acid etch primer. This was topped off a few days later with a fine bed liner spray.  This game the arms a durable coating plus the bed liner finish is quite ‘grippy’ and allowed the clamps the hold fast without too much yanking on the knobs.

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We have been using these now for about two years and for me they work out just fine.

Shopping…

I had all this stuff in the Bat Cave as it was purchased for other projects, so the mirror arms didn’t really cost me anything. Both arms were made out of one 1 metre length of 12mm steel tube.

The tube bender I paid less than £30 for it about 12 months ago from Amazon. The 12mm Steel tube, again from Amazon was around £4 for a 1 metre length and the Truck Bed Liner paint was around £8.

You can find links to these and other bits I use in the Caravan Chronicles Shop

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Just for comparison…. the original supplied arm against my contrivance…. and yes… I have now sorted that bit of surface rust out! (I missed a bit when spraying)

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Is A Euro 6 Engine Killing Your Leisure Battery?…

21 Friday Jul 2017

Posted by in Accessories, Amarok, Caravan Electrical Fault Finding, Caravan Electrics, Electrical, Maintenance, Modifications, Off Grid, Technical, tow vehicle, VW Amarok

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OK… so that title was a bit dramatic! However here’s the thing… I don’t think everything is peachy with Euro 6 engines and charging leisure batteries.

If you are a regular reader, you know I have recently installed one of Sterling Power’s Wildside units (and so far I’m super happy with it!) but I did get an email from someone who had read all my postings about it and asked me if it might cure his problem. Here’s the gist of his email….

Note: I have edited this down a bit…. and withheld the name of the person and vehicle.

“I have recently changed my car to a new 2017 xxxxxxxxxxxx and after several trips with it, on arriving home there is never enough charge in the motor mover to manoeuvre our caravan up our drive (which is on an incline) and park the caravan round the back of the garage. I have to plug the caravan in overnight before I can use the mover.

This only seems to have started happening since we changed to the xxxxxxxxxx. I had the caravan’s battery tested at two garages and they said it is OK and it is only 2 years old. The local caravan service man said he could not find anything wrong with the motor mover.

As we are on mains at the caravan sites we visit for a few days the caravan battery should be fully charged.

Can you help?”

This did have me stumped for a bit. Battery tested OK, no issues with the mover, so what was going on?

While doing some of the prep work for writing about my installation of the Wildside unit, I had spent a few days prodding about our VW Amarok with a multimeter and making a few notes about voltages etc. One thing that I did cotton on to was the cyclic way the vehicles ECU seemed to turn off the alternator…. well I should really say put the alternator into “idle” mode. Now with the caravan attached (pre Wildside unit install) I did notice that  at the start it seemed to take longer for the vehicle’s alternator to go into idle mode but also it seemed to stay in idle for a lot longer and I was in the process of trying to work out why as initially I’d have thought it would have been less as it was running the fridge and charging the leisure battery.

A picture is worth… you know the rest. Here’s one of my excellent drawings!

Euro 6 Problem 01

Right, here we go… The drawing shows a caravan plugged into a tow vehicle that has the engine-turned off. Pin 9 is live as it should be, and the habitation relay in the caravan is effectively off allowing the caravan’s leisure battery to connect and power the caravan’s internal 12 volt systems. As the vehicle engine is off, there is no power on Pin 10 the fridge circuit, as this is controlled by the vehicle’s ECU.

Really this could be any vehicle with any engine. Now let’s have a look at what happens with the engine running…

Euro 6 Problem 02

Pin 10 is live, turned on by the vehicles ECU and this powers the caravans fridge. It also operates the caravan’s habitation relay which now disconnects the leisure battery from the caravan’s 12 volt systems and connects it to Pin 9 so that the vehicle can start to charge it.

Again, this could be any vehicle with any engine. This is how our Land Rover Freelander works with our caravan. All straight forward.

Now lets look at what happens when the Euro 6 engine puts the alternator into “idle” (or Eco mode etc.)

Euro 6 Problem 03

This is where it starts to get interesting. I have taken a few liberties here and made a few assumptions. I have shown the vehicle’s alternator disconnected. In practice the ECU doesn’t disconnect the alternator, it will reduce the field voltage and hence the output, not really disconnecting it but reducing the output to a negligible amount.

The ECU will also monitor the vehicle’s battery voltage and continue to allow the vehicles general electrical system to drain the battery to somewhere around 75% charge (this may be a bit of an arbitrary figure) The ECU will then turn on (or up) the alternators output to recharge the vehicle’s battery to about 80%. Why 80% well it needs the remaining 20% ‘free capacity’ so that when you brake, the excess energy of engine braking (regen) can be dissipated into the vehicle battery. Remember that on a Euro 6 engine the alternator is capable of generating round about 2Kw.

Now at this point it dawned on me that something could be happening here, but the idea was a bit ridiculous…. guys with far more agile grey cells than mine must have worked this out and I dismissed the idea. I must have missed a trick somewhere.

I did a bit more checking. I was using two 17Ah sealed lead acid batteries as my “leisure” battery simply because it was quicker to charge or discharge them than a 120Ah battery. For a fridge load I was using 3 x 50 watt light bulbs and it was all jury rigged to a 13 pin plug so I could just plug it in to either the Freelander or the Amarok to make comparisons. I was using a trusty old AVO 8 meter, a couple of digital multimeters and a clamp meter to measure current so really the whole set up was super sketchy for anything that I could write about. I thought that I must have been missing something somewhere and I actually kind of put it to the back of my mind. I just got on with installing the Wildside unit and writing it up.

“DING” You have mail……

I received an email from Charles Sterling with some very interesting information. During testing he had come across exactly the same issue I was pondering over but had put off further testing. I guess by now you have worked it out. Quite simply you can get current flow in the opposite direction… from caravan leisure battery to vehicle battery. In testing Charles had measured a current of around 6 Amps.

It dawned on me that maybe during my initial testing with my jury rigged set up I hadn’t missed something and the readings I had seen were correct. Both Charles and I quite separately had (in my case ‘stumbled’) on a potential issue with Euro 6 engines and caravans.

Back to the original email earlier. It now made sense. The sender of the email was setting off from their campsite to travel home with a fully charged battery (being on EHU while they were on site) and during the course of the drive home, the vehicles ECU was actually reducing the fully charged leisure battery down to 80% charge as it actually thought that the ‘vehicle’ battery was at 100% charge. Hence when he arrived home, the caravan’s leisure battery didn’t have enough charge to run the motor mover long enough to put the caravan away.

So what does this mean in practice?

Well effectively (give or take a bit of loss due to cabling) the caravan’s leisure battery will only get charged to about 80%. You can now think of the vehicle battery and caravan leisure battery as being one battery bank because that is how the vehicle sees it. If the leisure battery is fully charged its voltage will be higher than the vehicle battery so the vehicle will turn off (or down) the alternator so that the vehicles electrical system can drain it to about 75% ready for accepting the excess energy from regen braking. The caravan’s fridge helps the vehicle by draining the battery bank that bit quicker.

This also answers another question. While I was testing, sometimes I’d plug-in my jury rigged setup and if my two little 17Ah batteries were fully charged I’d get a low current drain indicated on my clamp meter. I’d dismissed this to a certain extent, but now I realise that as my two 17Ah batteries were fully charged and the vehicle battery would be at about 80% charge, there would be enough of a voltage difference for a short while, that the two 17Ah batteries would try to equalise with the vehicle battery by recharging it slightly..

Whats the answer?

Well thankfully I solved my problem when I installed the Wildside unit a few weeks ago.

Finally…

If you have had any electrical issues with a Euro 6 engine and towing please drop a comment below. I’ll try to help.

As an aside, I am trying to arrange attending a tow bar installers electrical course with a couple of the OEM electrical equipment manufacturers and one of the approved bodies so I can hopefully increase my knowledge base and widen the number of vehicles I can cover. It’s a bit up-in-the-air at the moment as it would appear its going to cost a small fortune! (Sponsorship deals gratefully received!)

Getting All Charged Up – Update

02 Sunday Jul 2017

Posted by in Accessories, Caravan Electrics, Electrical, Off Grid, Product Review, Projects, Reviews, Technical, Towing, VW Amarok

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The best laid plans….

We had originally intended to spend a week down at Glastonbury which would have meant the 5 hour drive down would have been an excellent test for the Sterling Power Wildside unit’s first outing. However we had to cancel the trip literally the day before we were due to set off. In the few days between installing the Wildside unit and our planned trip to Glastonbury I had been exchanging emails and phone calls with Charles Sterling talking about some of the aspects of the Wildside unit and the direction that caravan electrics was heading in.

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Fitting A Bike Rack to the VW Amarok – Finale…

12 Sunday Mar 2017

Posted by in Accessories, Amarok, Bike Carrier, Bike Rack, General, Modifications, tow vehicle, VW Amarok

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It’s time to wrap up the bike rack install. I had to wait a few days for the final rack to arrive. Although I had ordered a twin pack of the Thule FreeRide 532 from Holdcrofts via Amazon and they had shipped out a twin pack, it would seem that their courier had ‘lost’ one and to Holdcrofts credit as soon as I emailed them they dispatched another… which the courier took four days to deliver.

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Fitting A Bike Rack to the VW Amarok – Part 2…

04 Saturday Mar 2017

Posted by in Accessories, Amarok, Bike Carrier, Bike Rack, General, Modifications, Projects, VW Amarok

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OK, so now to fit the actual bike carriers onto the rack I had previously installed a couple of days ago.

We had opted for the Thule FreeRide 532 over the ProRide version. What put me off the ProRide were a couple of videos on YouTube showing just how easy it was to remove a bike supposedly locked on to the rack. The FreeRide 532 has two arms supporting the bike and offered an option for additional security…. which I’m not going to go into for obvious reasons!

I had ordered a twin pack of the FreeRide 532, unfortunately I only received one. It seems the other was lost in transit somewhere according to my enquiries with the supplier. The other thing I found out was they (or it) didn’t come with the “T” track fixings. OK so a quick trip down to my nearest Thule dealer Northwest Towbars to pick up the elusive fixings. They would remain elusive… Northwest Towbars didn’t have any in stock. Not to be out manoeuvred I’d make my own.

To the bat cave again…

I just happened to have some 2mm aircraft grade aluminium handy and cut eight 21mm x 45mm pieces. The FreeRide 532 normally has three mounting locations, but as there was an additional hole that lined up with the “T” track it would be rude not to use it! So I made four for each rack.

img_1069For the threaded bolt I had some dome head bolts handy. The width of the dome head was wide enough so it would not pull through the slot on its own so I was not relying on a 2mm think aluminium plate entirly. To hold the bolts in place I drilled a slightly undersized hole in the aluminium…

img_1074

img_1075img_1077…and used my small press to force the square shoulders of the bolt through the aluminium plate to hold it in place.

img_1078The result was eight “T” track bolts. A quick dressing up on the sanding belt and fine grinding wheel to remove any rough edges finished them off.

img_1079 The excess length of the bolt would be trimmed later.

Fitting the FreeRide 532 Racks

Sliding four of the newly made “T” track bolts in to the WingBars I could place the FreeRide 532 on to the bars.

img_1080I used a couple of nuts to hold the rack in place while I test fitted one of the bikes. It was a bit too tight. The swing up frame section that clamps on to the bike only partially engaged on the bike frame. The whole rack needed moving rearwards by about 10 to 15 mm.

Not a problem, as the WingBar mounting is off set laterally compared to the “T” track, reversing the bar so it faced the other way would solve this and effectively move the “T” track slot rearwards by about 20mm.img_1081

With the WingBar mounted in the other direction the bike was a perfect fit. Also it made it easier opening the end caps of the WingBar as configured the correct way round they were a bit tight against the roll bar.img_1083img_1084img_1082The next thing to address was the overhang. I still had around 50 to 60 mm of adjustment I could make to the rails of the FreeRide rack. Removing everything again and a bit of ‘adjusticating’ with a small rubber mallet soon saw the rails in the correct position. I had not been able to get the rear of the mount flush with the pickup tailgate as was my original hope, but checking with a plumb bob…

img_1090img_1091… It was still shorter than the tow ball and only about 40mm longer than the rear bumper. So the overhang wasn’t anything to worry about.  Even with a bike on the rack it would be clear of the caravan in the tightest of turns. Next it was just a matter of squaring things up and tightening everything down.

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I ended up locating the rack more to the side than I first planned. This was for two reasons. Firstly, once the second rack is in place it leaves me with nearly 800 mm between the two racks which will allow for the option in the the future of having the ability to install a mesh tray, ski rack, surfboard rack (we don’t ski or surf… ho hum) or slimline roof box if we ever run out of storage in the Amarok. The second reason is it will give the rear view dash cam a relatively unobscured view rearward even with two bikes on the back.

Everything torqued to the correct settings, I topped off the nuts with an additional nylon lock nut to make sure they could not vibrate loose…

img_1093img_1094… and using a Dremmel I cut off the excess thread and ground off any sharp edges.  I need to find a suitable plastic or rubber push on cover for these then I can give them a quick coat of preserving grease.

One thing that I did think about was the prospect of the swing arms bouncing up and down when bikes were not on the rack. A quick rummage in my straps box produced a few of these little blue straps and a handy slot on the mounting plate seemed ideal…

img_1096… problem solved. A simple solution to something that may or may not be a problem.

So one rack fitted, all that is left is to repeat for the other side, when it arrives!

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