Dual Tyre Pressure Equalisation System

Here is what i use.
 

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trevskoda said:
I do a walk round before each trip but if your running double back wheels and get a flat on inner one the dash monitor is sure to be the safe option for quick stop and change before the tread flys of with overheating.:scared:
Click to expand...

That happened to me somewhere between Malaga and Calais a few years back.
Not frightening. Because I didn't notice a thing whilst running! Only when stopped in Calais
chanced to look under van, shredded inner. But most of the tread in one piece attached to
sidewalls in short strips.
 
Byronic said:
That happened to me somewhere between Malaga and Calais a few years back.
Not frightening. Because I didn't notice a thing whilst running! Only when stopped in Calais
chanced to look under van, shredded inner. But most of the tread in one piece attached to
sidewalls in short strips.
Click to expand...

Driving behind a truck one day i could smell burning so past him and waved him in,when stopped the inner rear ps tyre was melting and almost on fire,thanked me and radioed in for tyre truck to sort him out,prob missed the ferry at larne to scotland.
 
GWAYGWAY said:
I have a feeling the blokes would run out the rear door when you in for a Tyre balancing session.
Click to expand...

Kind of already has a balance weight fitted just a question of hitting it with
a hammer to position correctly :lol-061:
 
£5 fix

I like Tyre Monitoring Systems and bought a 6-wheel system for my LT Dually. I had problems with it as the extra weight of the sensors on the Valve extenders tended to cause the elbow extender to loosen and so loose pressure. The extender actually has loosened a couple of times without the sensors so was a hassle.


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I would put threadlock on the elbow extenders , problem solved

If you need to take them off again , they will free with a little heat




Loctite 2700 OEM Specified High Strength Thread Lock & Sealant- Stud/ Nutlock 8713899012857 | eBay
 
Kennyd said:
I like Tyre Monitoring Systems and bought a 6-wheel system for my LT Dually. I had problems with it as the extra weight of the sensors on the Valve extenders tended to cause the elbow extender to loosen and so loose pressure. The extender actually has loosened a couple of times without the sensors so was a hassle.


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I would put threadlock on the elbow extenders , problem solved

If you need to take them off again , they will free with a little heat


The clips i posted in picture above will cure the problem,trucks have been using this system for years with no problem.
Click to expand...
 
trevskoda said:
Here is what i use.
Click to expand...

I had a set of those on the Twin wheel transit BUT the inner one got out of its bent clip and just reached the road where it ground off the valve end leaving me with a flat , in the middle of nowhere in the dark, luckily it had not messed up the tyre. I managed to remove it and blow up the tyre using the proper valve but it was awkward to get that, it was the reason I bought the extenders in the first place. Only trouble I ever had with that van was the tyre valves, they were factory fitted ones and the were mostly rubber as the brass did not go down as much as proper valves do.. Turkish supplied rubbish, four went before I bit the bullet and bought metal valves to replace all six.. The rubber had perished and gave slow punctures through side crack on the body of the valve.. Ford knew but never said. Turkish factory, built chassis.
 
I install Transit TR-600 rubber and brass rated max. 100psi.
Schrader marked (who really knows these days?) Made in Chinaland. Never
a problem.
Plastic extenders for the inner rears, simple as can be, in
keeping with the rest of the van mechanicals. More joints
equals more chance of leaks in my lexicon of understanding.



Lexicon....so much better than book:p
 
Not driven the Camperbus since fitted this kit until today. Checked the displays and still spot on as I left them so no leaks there :)
Couldn't detect any induced imbalance due to the extra gauges and hoses when driving.
Checked the gauges when I got home after final 15 mile drive and they were both like this:

Gauge after driving by David, on Flickr
Very much as expected and described by the maker - over pressure due to the heat induced when driving. Being half yellow, half red I would estimate 70 PSI (as 10 PSI down changes from full yellow to full black and I'm guessing the change is linier).

I'll refit the TPMS sensors on the van now I have checked the gauges are good so I can dynamically monitor all the tyres (plus the trailer when I tow that)
 
Bit of a delay with the TPMS as when I installed it most of the sensors didn't seem to work :( checked the batteries and all but one was under 3V (uses 3V batteries).
So bought a pack of batteries from Amazon and reinstalled the sensors this evening.

Looks nice and neat on the Crossfire unit as well

TPMS on Crossfire by David, on Flickr

Now the TPMS system I got was a 6-wheel setup designed for either Vehicle + Trailer or a 6-wheel vehicle (the display actually represents a Dually). I bought this before I was aware of the Crossfire system and wanted to monitor all the wheels.
With this system I had two extra sensors now as the Crossfire combines each pair of wheels and presents a single valve (as shown above). So what to do with the spare sensors?

I was going to fit them to my trailer, but I don't use the trailer much, plus it doesn't seem possible to set the second set of rear sensors differently to the first set, so the pressures would not be right.
I noticed that the TPMS kit has an option for a Spare Wheel sensor :idea-007: So this is what I did! Recoded one of the spare sensors to become the Spare Wheel sensor, and left the last sensor without a battery and as a general spare.

So 4 main wheels show in the display

TPMS Display by David, on Flickr

The spare alternates between the primary and secondary sensors. This is the one showing the spare

TPMS - Spare by David, on Flickr
I need to recode the last sensor to remove it from the default 2nd dually wheel so that wheel doesn't show anymore, but only takes a few minutes to do.

It is quite a neat TPMS system. I like the fact it uses a little solar panel to keep it charged so not tied to being wired up for power.
 
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