Bicycle Mechanics - C'dale M400 bottom bracket questions

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.



PDA
tonyc
06-30-04, 11:10 AM
Hi, I'm about to replace my old bottom bracket and have a couple questions so I do this right..

Is there any trick to getting the cranks off? I tried using crow bar but they won't budge.

Is the bottom bracket screwed in clockwise or is it counter clockwise? I just don't want to strip anything :eek:

Third, the BB is 68x113 right?

Lastly, what's a "good" BB for an ok price? In the $30-$50 range I guess.

Thanks

roadfix
06-30-04, 11:54 AM
You need a crank extractor to pull your cranks off. You also need a bottom bracket tool to remove the cups. One side is threaded clockwise and the other counter clockwise. These square tapered BB can be found cheap.....as low as $10 for a decent quality generic sealed cartridge... check Nashar or Performance. Shimano UN-72's or 73's are good replacements also....they're about $25.
tonyc
06-30-04, 01:58 PM
You need a crank extractor to pull your cranks off. You also need a bottom bracket tool to remove the cups. One side is threaded clockwise and the other counter clockwise. These square tapered BB can be found cheap.....as low as $10 for a decent quality generic sealed cartridge... check Nashar or Performance. Shimano UN-72's or 73's are good replacements also....they're about $25.

Doh, I just ordered a 68x110 Shimano UN-73 bottom bracket but I just looked on my bike and noticed stamped on the bottom bracket LL 113 WD. What should I do? Is 113 the width or something else?

tonyc
06-30-04, 02:14 PM
Doh, I just ordered a 68x110 Shimano UN-73 bottom bracket but I just looked on my bike and noticed stamped on the bottom bracket LL 113 WD. What should I do? Is 113 the width or something else?

Ok, just called and switched to the 113. i hope that's right. Epinions.com lists my bike as 110 but I doubt they're info is super accurate
madpogue
06-30-04, 02:38 PM
Good thing you didn't try too hard with the crowbar. You would've eventually damaged or broken something (part of the frame, a basement window, your elbow/wrist, etc.). As for the threads on the BB, the left side threads normally, the right (drive) side threads counter-clockwise.