General > General Technical Chat

internal tire pressure sensor on a road bike

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abeyer:

--- Quote from: Benta on August 24, 2023, 07:37:37 pm ---Always on hand.   :-DD

--- End quote ---

until you need to detach them to leave them installed on the tire.  :P

Zero999:

--- Quote from: DiTBho on August 24, 2023, 12:07:15 pm ---
--- Quote from: mikeselectricstuff on August 24, 2023, 10:10:53 am ---Have you looked at automotive TPMS modules ?

--- End quote ---

thanks, good keyword to Google for  :D

--- End quote ---
Road bike tyres need to several times the pressure as car tyres.

joeqsmith:
I was thinking you could sandwich a strain gauge between the rim and tube.  Small coil and some electronics.  Power it from a magnet mounted to the chassis.   Google search someone actually tried something similar. 

https://gigazine.net/gsc_news/en/20130110-btps/ 

DiTBho:

--- Quote from: joeqsmith on August 24, 2023, 09:00:51 pm ---I was thinking you could sandwich a strain gauge between the rim and tube.  Small coil and some electronics.  Power it from a magnet mounted to the chassis.   Google search someone actually tried something similar. 

https://gigazine.net/gsc_news/en/20130110-btps/

--- End quote ---

that's super interesting! thanks  :D

thm_w:
For live monitoring you are probably best off with that sram unit.

There are some non-live sensors as well, similar to the one joeqsmith linked above using NFC:
https://www.bikeradar.com/news/tubolito-tubo-mtb-p-sens-inner-tube/
https://bikerumor.com/exclusive-rover-psicle-wireless-tire-pressure-monitor-is-accurate-tubeless-battery-free/

Are you using TPU? https://www.bicyclerollingresistance.com/specials/tpu-inner-tubes

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