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TPMS on C127?
Posted:
Wed Oct 18, 2023 11:53 amby 13cobra
What's the most economical way of getting TPMS on a C127?
Re: TPMS on C127?
Posted:
Wed Oct 18, 2023 12:40 pmby David Ferguson
I'm currently installing a Trailbrake TPMS system for a customer. Since it uses production parts, the price seems reasonable.
https://trailbrake.com/tire-tpms/
Re: TPMS on C127?
Posted:
Thu Oct 19, 2023 12:43 amby 13cobra
David Ferguson wrote:I'm currently installing a Trailbrake TPMS system for a customer. Since it uses production parts, the price seems reasonable.
https://trailbrake.com/tire-tpms/
Interesting!
So it's $225/sensor? Then they just communicate via CAN with the Motec and can have a page in the display made to show the data?
Also, are you currently doing the internal or external sensors?
Re: TPMS on C127?
Posted:
Thu Oct 19, 2023 12:55 amby David Ferguson
No, the complete 4-wheel system is $225 with the receiver and 4 internal or external sensors. Look at the pictures to see all the parts. The internal sensors are $32 each. It sends Pressure, Airtemp, internal battery voltage and a leak alarm from each wheel at 5 hz, on a 1Mbit CAN bus.
My customer bought the TPMS unlimited with the base system + 4 internal sensors (8 total) for $401:
https://trailbrake.com/tpms-unlimited/? ... UiOjEwMjZ9Spare sensors:
https://trailbrake.com/tpms-unlimited-sensor/
Re: TPMS on C127?
Posted:
Thu Oct 19, 2023 1:07 amby 13cobra
David Ferguson wrote:No, the complete 4-wheel system is $225 with the receiver and 4 internal or external sensors. Look at the pictures to see all the parts. The internal sensors are $32 each. It sends Pressure, Airtemp, internal battery voltage and a leak alarm from each wheel at 5 hz, on a 1Mbit CAN bus.
My customer bought the TPMS unlimited with the base system + 4 internal sensors (8 total) for $401:
https://trailbrake.com/tpms-unlimited/? ... UiOjEwMjZ9Spare sensors:
https://trailbrake.com/tpms-unlimited-sensor/
Ah, I was sold at $1800 haha
I would much prefer the internal sensors. Do I need to buy the training tool as well? I would assume so, but you didn't mention your client did.
Re: TPMS on C127?
Posted:
Thu Oct 19, 2023 1:09 amby David Ferguson
No, they came pre-programmed two sensors already labeled for each corner of the car.
Re: TPMS on C127?
Posted:
Thu Oct 19, 2023 1:15 amby 13cobra
David Ferguson wrote:No, they came pre-programmed two sensors already labeled for each corner of the car.
Did you have any issue, or foresee any issue integrating into the Motec Dash Logger?
Re: TPMS on C127?
Posted:
Thu Oct 19, 2023 2:29 amby David Ferguson
I wound not have suggested it if I did not think it would work with your dash / logger.
Here is the CAN Comm Template I created from the documentation. You may need to change the channels to suit your installations (not sure you will have all the channels I used). And the sensor voltage is in .1V units, but the channel I chose only has whole units, so I just left it multiplied by 10 (so 31 means 3.1V).
Re: TPMS on C127?
Posted:
Thu Oct 19, 2023 8:54 amby Stephen Dean
A 5Hz update rate is better than the 1hz that they mention in the specs. How accurate are the pressures read by the sensors compared to an accurate tyre gauge David?
Re: TPMS on C127?
Posted:
Thu Oct 19, 2023 8:59 amby David Ferguson
Since I don't have it really working, I can't confirm, the protocol claims to send data every 200ms, but perhaps that's one wheel every 200ms, so closer to 1 HZ.
Our project just came to a stop a few minutes ago. The internal sensors don't fit the valve-stem opening in the BBS wheels my customer is using. Wheels are about 8.5mm, and the sensor needs something like 11.5mm.