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Thread: Dual Tyre Pressure Equalisation System

  1. #31
    Byronic Guest


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    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

  2. #32

    Member Number
    60568
    Join Date
    Jun 2016
    Posts
    2,465
    Motorhome
    VW LT 2.8TDi Self-Build Camperbus
    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)
    Camperbus Blog and Website - www.wildebus.com
    Electrical Bits - stores.ebay.co.uk/Camper-Van-Kit

  3. #33

    Member Number
    60568
    Join Date
    Jun 2016
    Posts
    2,465
    Motorhome
    VW LT 2.8TDi Self-Build Camperbus
    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 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.
    Camperbus Blog and Website - www.wildebus.com
    Electrical Bits - stores.ebay.co.uk/Camper-Van-Kit

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