02-20-2014, 04:01 AM
I'm getting confused about BB length, type and all the specs involved in selecting a crank set. All I know for sure, is that I have a 2009 Cannondale F5 that has a stock FSA CK-306TTT crankset, 22/32/44 (specs HERE) .
Item Number / Model Name
BB-8420 / Power Driver BB(PD) for CK-306,
BB Shell 68mm including E-type / 73mm English (BC1.37”)
Additional FSA info HERE.
This crankset has a riveted inner ring, which seems to be the source of my chain-suck problem, and does not appear to be replaceable. My bike already has a brand new cassette and chain. I like the 22 tooth sprocket and would like to stick with the 22/32/44, but I'm a little confused by what'll fit. Square drive? PowerSpline? Something else? I see the specs, but I'm not sure what they mean. I'm assuming the stock cranks are 175mm, but I'm not sure where to measure. Center of BB to center of pedal mount? What, if any, concerns about diameter and length of the BB do I need to address?
Turning a wrench doesn't scare me, but what kinda tools might I need for swapping crank sets? Do I need a gear puller or anything special, beyond a Metric hex key set? I'm 1,500 miles from home, on vacation in Texas, and I had big plans for me and the better half. We're supposed to be camping and riding the next ten days, but the chain-suck on my inner and middle ring makes it nearly impossible. I had our bikes tuned-up at our LBS, but I guess he missed the inner ring problem. I figure I can order parts/tools and have them over-nighted to our next camping spot in an attempt to salvage some fun out of our trip. I have basic tools, but no torque wrench. That doesn't bother me too much. I know the difference between 150 inch/pounds and 30 ft/pounds.
I guess an alternative would be to call a bike shop on our route, but I'm not concerned about my abilities if I know which parts and tools I'll need. Or, if I do take it to a LBS here in Texas, I'd like to know what the heck I'm talking about before walking in the door.
Thanks for any and all input.
Edit: I'm considering this crank set. I'm not made of money, but I don't like really cheap, either. Suggestions welcomed:
http://www.amazon.com/Crank-9-Speed-Powerspline-175mm-Black/dp/B003UWBPH2/
Item Number / Model Name
BB-8420 / Power Driver BB(PD) for CK-306,
BB Shell 68mm including E-type / 73mm English (BC1.37”)
Additional FSA info HERE.
This crankset has a riveted inner ring, which seems to be the source of my chain-suck problem, and does not appear to be replaceable. My bike already has a brand new cassette and chain. I like the 22 tooth sprocket and would like to stick with the 22/32/44, but I'm a little confused by what'll fit. Square drive? PowerSpline? Something else? I see the specs, but I'm not sure what they mean. I'm assuming the stock cranks are 175mm, but I'm not sure where to measure. Center of BB to center of pedal mount? What, if any, concerns about diameter and length of the BB do I need to address?
Turning a wrench doesn't scare me, but what kinda tools might I need for swapping crank sets? Do I need a gear puller or anything special, beyond a Metric hex key set? I'm 1,500 miles from home, on vacation in Texas, and I had big plans for me and the better half. We're supposed to be camping and riding the next ten days, but the chain-suck on my inner and middle ring makes it nearly impossible. I had our bikes tuned-up at our LBS, but I guess he missed the inner ring problem. I figure I can order parts/tools and have them over-nighted to our next camping spot in an attempt to salvage some fun out of our trip. I have basic tools, but no torque wrench. That doesn't bother me too much. I know the difference between 150 inch/pounds and 30 ft/pounds.
I guess an alternative would be to call a bike shop on our route, but I'm not concerned about my abilities if I know which parts and tools I'll need. Or, if I do take it to a LBS here in Texas, I'd like to know what the heck I'm talking about before walking in the door.
Thanks for any and all input.
Edit: I'm considering this crank set. I'm not made of money, but I don't like really cheap, either. Suggestions welcomed:
http://www.amazon.com/Crank-9-Speed-Powerspline-175mm-Black/dp/B003UWBPH2/