Crank to cassette alignment question
09-29-05, 08:40 PM
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Crank to cassette alignment question
I'm building up a Pedal Force QS2 frame with Neuvation M28's and just got an FSA SLK 53/39 crank today to put on. As I'm starting to fit things together, I see with the wider crank I've got, the big ring is so far away from the frame it's actually in line with where the smallest cassette cog will be. I was hoping it would fall in line somewhere near the middle of the cassette so the chain won't have to bend so much. Should I get another crank? This one is an integrated crank with outboard bearings and the "Q" factor is around 150mm. The Ultegra 6500 I'm used to is around 130mm for comparison. I didn't think of this before I pulled the trigger on ebay.
09-29-05, 09:02 PM
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Q factor is independent of chainline,and chainline is apparently the issue.The FSA and ultegra 6500 should both have the nominal chainline spec of 43.5mm(I know the ultegra is 43.5) in order to work as intended with the equipment they will be used with. On a double, chainline is measured to the middle of the 2 rings,and a line from that point parallel to the frame should bisect the cassette....Any possibility you have the FSA cranks installed wrong?
09-30-05, 02:14 PM
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Originally Posted by sydney
....Any possibility you have the FSA cranks installed wrong?
