Mix it up

[xerxes]

Quote:So I found a New SHIMANO Tourney FD-TX50 Front Derailleur for a nice price but it says that it is a 6/7 speed and the problem is that I have a 8 speed. Is this a deal breaker. Also the FD is right for my 42t outer sprocket. Thanks for folks time and replies.

The mech movement is actually determined by the shifters, so these must be suitable for the number of sprockets you have.

Cassettes and freewheels that have different number of sprockets have a variety of different widths and spacer thicknesses. I would be inclined to check the manufacturers details carefully and not mix and match unless you're sure a combination works.

Have a read of these:

http://www.sheldonbrown.com/cribsheet-spacing.html

http://www.sheldonbrown.com/k7.html