[sdcantrell56]

Originally Posted by rees2001

Nice looking model.

We have been putting 16T #25 chain inside 2 x 1.5 tube for a couple of years. If you want to do a drop center 16T is as small as you can really go. Your chain will start to stretch and loosen up, rub a bit against the wall of the tube. Assembly of 18T will be almost impossible and if you are just running a 1:1 ratio between wheels why go with an 18T?

I really believe Versa is going to really change things for teams with limited fabrication abilities.

The main reason for going with a higher tooth count sprocket is to reduce the load in the chain and increase # of teeth that are meshed. Both influence how robust the system will be.