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I've just had a look at this - http://www.eehouse.org/fixin/formfmu.php
What are peoples thoughts on magic gear vs chain tensioners? How big a tolerance do you realistically have? Running 42/18 on the Uncle John gives 63 GI, but it is half a mm too long (slack).
This seems like a negligible amount, and I'd expect to get reasonable chain tension but just wondering what people think. Am I just making life hard for myself trying to avoid buying a chain tensioner?
Nef
andyp
Okay gang, might construct a magic gear single speed MTB with spare parts. What's the easiest calculator to use?