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?
me have long head tube
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.
I dunno...I just measured and they seem almost exactly 7/16", definetly smaller than 1/2".
I had a free sprit back in 1980-1982, pedals were 1/2". Pretty standard sizing.
K. I'll take your word for it then. I was measuring by the end that you can see without removing the pedal anyway, probably not 100% (or even 60%) accurate lol.
Originally Posted by colnagorider
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".
Thanks for the help! I've found a bunch of cheap pedals on eBay that are 1/2" and would be fine for this. I'm trying to keep this as cheap as possible, and since it's not going to be a race machine or anything, cheap is ok so long as they are better than the beat up/really cheap crap that came on it that are all worn out.
Originally Posted by HillRider