martint235
Dog on a bike
- Location
- Welling
I'm going to have my new crankset fitted tomorrow and have two further questions:
1. I understand the number of teeth etc and am getting a 53/39 set up (shame they don't do 63/39 that'd go quick!!!), but what is the mm measurement? 170mm etc is this the length of the crank arm? If this is the case I'm guessing that longer gives more leverage but shorter would actually be a stronger component (less flex) is this correct?
2. I was set on getting Shimano 105 as everything else that's been replaced lately on the bike has been this group. However I've just noticed Shimano Ultegra (6600 and SL) at around the same price, is there a huge difference in quality?
Ta
1. I understand the number of teeth etc and am getting a 53/39 set up (shame they don't do 63/39 that'd go quick!!!), but what is the mm measurement? 170mm etc is this the length of the crank arm? If this is the case I'm guessing that longer gives more leverage but shorter would actually be a stronger component (less flex) is this correct?
2. I was set on getting Shimano 105 as everything else that's been replaced lately on the bike has been this group. However I've just noticed Shimano Ultegra (6600 and SL) at around the same price, is there a huge difference in quality?
Ta