| Strain on valve stems with air pressure monitors [message #342416] |
Wed, 10 April 2019 06:30  |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma:
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Senior Member |
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So I installed air pressure monitors on my tires last year. TST unit with 6 monitors included for $199 which seemed to be a good deal. So far has worked excellent.
Then I read the monitors should be installed on all steel valve stems. Mine are rubber with a metal sleeve which seem to be rated for our use up to 80psi (I believe). So I Googled a site with a centrifugal force calculator to measure this. The sensor weights 0.77 oz according to the TST site and the distance from the center of the wheel to the center of the sensor is 6.5". So at 700rpm (approx for 65MPH on my LT225/75R16 tires) the calculator indicates 4.4Lb-force.
That seems like alot! maybe I'm using the calculator wrong, but I then tried several others with the same result. It works out to be a 100 times increase in weight force.
Has anyone had issues with the sensors causing issues? Have you changed to all metal valve stems?
Thanks,
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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