I posted about this same topic in the mechanic section, but I thought maybe a post here would be beneficial as well.
Last summer I purchased a single-speed, June 1969 Schwinn Typhoon from eBay.
It's a great bike, and I plan on fixing it up to look and ride even better.
The one strange thing about this bike is that instead of a regular sprocket at the pedals, there is a large, black Dana 3-speed transmission. While it does shift and work well, it has lately started to catch on itself and stop pedaling, most recently while in a busy intersection. Because I am concerned for my safety as well as my bike's safety, I am planning on removing the transmission and replacing it with the single-speed sprocket much like the one that originally came with the bike. Here's where I have a problem.
I don't know anything about the original sprocket. I've been looking in bookstores for Schwinn repair manuals to see how the pedals are attached and what makes the bike move, but to no avail. I'm not even sure how to remove the transmission.
I'm attaching several photos, which should help describe what I'm saying.
this is the transmission as mounted on my bike.
Another view of whole bike.
Is this how it works?
How would I remove this transmission?
How does a Schwinn crankset go together?
I'm seeing terms such as "bottom bracket" and I don't really know what is what.
Thank you very much for your time and I'm hoping to be able to fix this up and ride.