New pedals on old bike
07-15-06, 10:45 AM
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New pedals on old bike
I have a 78 Free Spirit and the old pedals are beat. It seems the thread size is roughly 7/16"...Is that right?
07-15-06, 11:23 AM
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My guess is 1/2" threaded pedals. This was common on bikes with one-piece cranks, and you can still get such pedals, often designed for cheap kid's bmx bikes with one-piece cranks.
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"c" is not a unit that measures tire width
"c" is not a unit that measures tire width
07-15-06, 12:29 PM
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I had a free sprit back in 1980-1982, pedals were 1/2". Pretty standard sizing.
07-15-06, 12:32 PM
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Originally Posted by colnagorider
I had a free sprit back in 1980-1982, pedals were 1/2". Pretty standard sizing.
07-15-06, 03:20 PM
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The "root diameter" of the threads is 1/2". What you are measuring is the distance between the peaks of the threads and that will be less than 1/2". The folks telling you you have 1/2" threaded pedals are right and any bike shop will know what you want if you ask for this size.
For comparison, better quality cranks have 9/16" threads. I just measured the ID of a good crank that I'm absolutely sure takes 9/16" pedal threads and the measurement was 0.505" or right around 1/2".
For comparison, better quality cranks have 9/16" threads. I just measured the ID of a good crank that I'm absolutely sure takes 9/16" pedal threads and the measurement was 0.505" or right around 1/2".
07-15-06, 03:23 PM
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Originally Posted by HillRider
The "root diameter" of the threads is 1/2". What you are measuring is the distance between the peaks of the threads and that will be less than 1/2". The folks telling you you have 1/2" threaded pedals are right and any bike shop will know what you want if you ask for this size.
For comparison, better quality cranks have 9/16" threads. I just measured the ID of a good crank that I'm absolutely sure takes 9/16" pedal threads and the measurement was 0.505" or right around 1/2".
For comparison, better quality cranks have 9/16" threads. I just measured the ID of a good crank that I'm absolutely sure takes 9/16" pedal threads and the measurement was 0.505" or right around 1/2".
