If anyone out there has a 48t sprocket, can you measure the diameter? I am trying to figure out some things on my current build. I am wanting to know before I purchase one.
Curt was correct. Take the circumference and divide by pi (3.14). I was flustered earlier and didn't think of it. I just tried it on another sprocket I have laying around and it's spot on.
Hmmm... 24/3.146 = 7.64
I'm thinking the 48 tooth is slightly bigger than that... But I just ran out to the garage and measured my 44 tooth at just around 7" so it's really close...
You guys have it. I was asked this question in the chatbox a week ago, it's a simple formula:
Teeth count * Chain pitch / Pi = general sprocket diameter
I had to figure this out 2 years ago when I needed to put a 76T on my pedal cranks for my shift kit's engine reduction. I ended up going with #35 instead of 4x/4xx as I didn't want to have a 12" diameter sprocket!