cycles per second
Join Date: Oct 2003
Bikes: Vitus Aluminum, DiamondBack Apex, Softride Powerwing 700, "Generic" Ishiwata 022, Trek OCLV 110
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You cannot use a chain tensioner with fixed gear. Only with a freewheel.
If you have a flip-flop hub that you can put two different size cogs on, you could run two different size chain rings giving you two gears: big ring/little cog and little ring/big cog. As long as the number of teeth for the two combos add up to the same (+-1 or 2 depending on the length of the horizontal dropouts or the adjustability of the eccentric rear hub if that's what you're using), you can use the same chain length. An example would be 40/20 and 45/15. But since you would need to stop and take out the wheel to change gears, you wouldn't need a front derailer.