Originally Posted by Metacortex

The serial number B5075 indicates this was the 75th frame made in Feb. 1965, meaning it is almost certainly a '65 model. These frames were hand-built in the Paramount "cage" and like the Paramount at the time used different serial numbers than the standard production frames.



Schwinn changed to non-stainless spokes in '66 for sure and may have actually changed earlier. During the transition it might have been possible to get different spokes from the factory but it is also possible or even more likely that the front or rear was relaced at some time in the past.

Both hubs have the triangular cutouts which are correct for this bike. Check the hub markings, I believe that the original hubs in '65 should be marked "Sprint" while later replacements were "Schwinn Approved". Also look for a letter or number date code.



The front brake appears to be the stickered Weinmann style used in Sept. '64 and later, while the rear appears to be an earlier engraved style. It may have been a replacement at some time in the past. I also noted that this bike has the red button type quick release levers that were supposedly used in '64 only, however it is possible that some made it into early '65 production.



That was an aftermarket change, most likely by sombody who also rode motorcycles as they have the front brake on the right lever.



You might be able to repair the threads on the pedal with a small file, then lubricate it and seeing if you can get it to thread in properly. If that doesn't help then I'd try a local bike shop.