Shimano Q Factor

Q factor has to take into account more than just biomechanics there are limitations due to bottom bracket size chainstay length and minimum chain line guidelines from people like shimano. Ultegra 105 i find it hard to measure to the mm on pedals as there isn t a firm reference point however a while back i was trying to track down a knee problem i was having on one bike but not the other so i measured everything from the r540 to the 9000 pedals and they were all the same. It may also be referred to as the tread of the crankset.

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Mountain bike q factor is 170mm adding 40mm to a road bike at 146mm will likely help many cyclists achieve desired comfort and.

Shimano q factor. The q factor of a bicycle is the distance between the pedal attachment points on the crank arms when measured parallel to the bottom bracket axle. Shimano deore xt hollowtech ii mtb crankset 172 mm q factor 1x12 speed the shimano deore xt fc m8100 1 crank features an entirely new construction using direct mount chainrings special gear tooth profile for improved chain retention and a 172mm q factor. The q stands for quack a reference to the wide stance and waddling gait of ducks. The all new shimano ultegra r8000 series crank features lightweight crankarms a hollow outer chainring and a wider gear pitch for increased clearance on modern road frames.

The shimano xtr fc m9130 1 crank features an entirely new construction using direct mount chainrings special gear tooth profile for improved chain retention and a narrow 171 mm q factor. It s poorly understood can be difficult to change and is dependent on what type of frame crankset and. On offer are 165 170 and 175 mm crank arms. Q factor is one of those metrics on the bike that people aren t sure what to do with.

Slx hollowtech ii mtb crankset 178 mm q factor 1x12 speed the slx fc m7100 1 crank features an entirely new construction using direct mount chainrings special gear tooth profile for improved chain retention and a 178mm q factor. The fc m9130 1 uses a 56 5 mm chain line and can be converted between 1x and 2x with 30 32 and 34t chainrings available. Using the previous equation based on the q factor of a shimano crank adding a pedal extender to each side would add 40mm to the overall stance width for a total of 292mm or about 11 5 inches. It is available with 53 39 52 36 50 34 and 46 36t chainrings and 165 170 172 5 and 175mm crank arm lengths.

The term was coined by grant petersen during his time at bridgestone bicycles.