Originally Posted by bairdco
chain tensioners? i have one of those. it's an 11/16's wrench and a chain breaker.
none of the bikes i've built need a "tensioner."
seriously. if you don't have mice, you don't have to build a better mousetrap.
If you have vertical rear drop outs (what your axle slides into) on your frame and you don't want to move your engine to adjust tension, then a tensioner is essential.