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Dockspa1
Guest
Evidently, there some bike builders that do not understand the concept of drive ratios so I will see if I can help them out a little.
This is a beginning point.
http://eagle.csd49.org/middle/jss/Course_Transmissions_02.htm
I have been told by several well known bike builders that the driving spindle's outside diameter has nothing to do with the overall speed and or torque of the tire. In fact they have told me that it wouldn't matter what size the scrubber spindle was, they would still be going the same speed or MPH.
An inch for an inch is what one member stated.
Ok, if you are mounting a 1" spindle on a 26" tire, the motors RPM's are going to have to speed up by 26 times in order to have the same output.
It is an inch for an inch but there are a lot more inches on the diameter of the tire. The motor will have to turn 26 times for the tire to turn once.
Anyway, I had to start this thread because we started walking on someone elses.
If some one can give me a real good reason to think otherwise, I am willing to listen.
This is a beginning point.
http://eagle.csd49.org/middle/jss/Course_Transmissions_02.htm
I have been told by several well known bike builders that the driving spindle's outside diameter has nothing to do with the overall speed and or torque of the tire. In fact they have told me that it wouldn't matter what size the scrubber spindle was, they would still be going the same speed or MPH.
An inch for an inch is what one member stated.
Ok, if you are mounting a 1" spindle on a 26" tire, the motors RPM's are going to have to speed up by 26 times in order to have the same output.
It is an inch for an inch but there are a lot more inches on the diameter of the tire. The motor will have to turn 26 times for the tire to turn once.
Anyway, I had to start this thread because we started walking on someone elses.
If some one can give me a real good reason to think otherwise, I am willing to listen.
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