Originally Posted by
jaimo
Thanks, the drop outs are horizontal but with the freewheel the wheel is pushed all the way back so would not be able to move it further back with the fixed cog. Will give a larger fixed cog a try.
If the slots are long enough, take a link out of the chain to move the cog forward enough so that you don't run out of slot when you use the smaller cog. The closer in size the cogs are, the less of an issue this is, but most horizontal track dropouts are long enough to accommodate a 2-tooth size difference without a problem.