The photo was from a site that no longer seems to be up. The pedal on the right, measuring at 15.7mm is the same size that the pedal on my indoor spin bike uses and I want to use standard 9/16 threaded pedals instead.

Has anyone come across this size??? Do adapters exist to step up standard 9/16 to 15.7mm?

  • @[email protected]
    4•6 months ago

    The pedal on the right seems to have some sort of adapter on it? If you can’t find anything bike specific you can get general purpose coils (helicoil i think? ) for for bolting stuff in oversized threads , no idea if that will hold up probably not great if you need to remove them often.

    • @[email protected]OP
      1•6 months ago

      If you can’t find anything bike specific you can get general purpose coils (helicoil i think? ) for for bolting stuff in oversized threads , no idea if that will hold up probably not great if you need to remove them often.

      I didn’t know if that might work, but thanks for the suggestion. I don’t plan to really take the next set of pedals off, unless for servicing, so this might be an option. Never used them before, but know of them.

  • @[email protected]
    1•6 months ago

    Unfortunately, this might not be easy to find a solution for. The larger thread size doesn’t seem to be a standard bike pedal thread, so finding a specific adapter is probably not possible.

    Another solution might be to use some kind of threaded inserts in the cranks (this would probably require drilling the cranks out for a larger thread). But the standard pedal thread of 9/16-20 is not widely used anywhere else, so finding the inserts (let alone a left-handed ones is probably next to impossible.