Originally Posted by
djoelt1
Will the current Shimano 10 speed triple MTB XT cranks work with my current front derailleur setup and 8 speed chain? Are the chain wheels on the crank spaced the same as on an old triple crank that was made for a wider chain?
Any help would be appreciated.
You might have rub problems using smaller cogs and rings together unless you shim the big and small rings back to 8 speed spacing.
When I tried combining an alleged "9 and 10 speed compatible" FSA Carbon Pro compact crankset with a Campagnolo C9 chain I had rub in the big ring on the last few gears which produced no usable overlap between rings until I spaced it back to 9 speed dimensions.
You can get 0.6mm spacers from letour made specifically for that problem and 1mm are not uncommon.