- #1
dragilla
- 15
- 0
Hi,
I'm a triathlete and a hobby constructor. I would like to build a power meter for my bike because the ones on the market are quiet expensive. The idea is to measure the power the rider puts into pedaling by measuring the tension between the pedal and the crank. They are connected with just one screw, so it is the single point of force transfer.
The question is - would a strain gauge mounted inside the screw do the job? I mean something like this:
http://www.tml.jp/e/product/strain_gauge/gauge_list/btm_list.html
It is meant to measure the tensile strain of the bolt, so how hard the bold is screwed in and how hard it is pulled, stretched - this is how I understand it.
I ask this question here, because I'm not sure how forces are distributed when a cyclist presses a pedal. One would think that if the pedal is screwed in tightly then this type of sensor should do the job. Do you think I'm right?
regards,
I'm a triathlete and a hobby constructor. I would like to build a power meter for my bike because the ones on the market are quiet expensive. The idea is to measure the power the rider puts into pedaling by measuring the tension between the pedal and the crank. They are connected with just one screw, so it is the single point of force transfer.
The question is - would a strain gauge mounted inside the screw do the job? I mean something like this:
http://www.tml.jp/e/product/strain_gauge/gauge_list/btm_list.html
It is meant to measure the tensile strain of the bolt, so how hard the bold is screwed in and how hard it is pulled, stretched - this is how I understand it.
I ask this question here, because I'm not sure how forces are distributed when a cyclist presses a pedal. One would think that if the pedal is screwed in tightly then this type of sensor should do the job. Do you think I'm right?
regards,