Mountain Biking - Hi, bottom bracket / crank arms

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.




View Full Version : Hi, bottom bracket / crank arms


Joshorilla
07-02-09, 12:00 PM
I'm off grid baby


surreal
07-02-09, 02:49 PM
step one:find the person who put your bike outdoors and, as you're "quite built", threaten to hurt them badly if they don't help you unfreeze your bike components.

step two: Use the penetrating lube (don't giggle) liberally, and let it sit around on the frame for a while. Like, overnight. Have your dad/old roomie/whoever put the bike outside help you as you use various tools and body parts to try to dislodge parts, caveperson style. (Brute strength, primitive strategies.) Do this for, like, 3 hours.

step 3: if, at anytime, the frustration overwhelms you, just thank your lucky stars that you got the seatpost out.

step 4: if this goes on any longer than, say, 3 hours of caveman shhh, consider getting a new frame.

hth
-rob

dminor
07-02-09, 03:00 PM
Take a wire wheel to the exposed part of the steer tube to attack the rust scale so the spacers stand a chance of sliding when dislodged. Spray more WD-40 around that mess and let sit. Then pound on it with a rubber mallet fist and try to drive out the steerer. Then use a big ball-peen or a small sledge when that doesn't work.

BB cups should be less of an issue, since that should be aluminum against aluminum. Just use a good BB cup socket and a long 1/2"-drive breaker bar.


Joshorilla
07-03-09, 04:14 AM
I'm off grid baby

Duce97
07-03-09, 05:04 AM
Use a good pipe wrench , i had that happen to an old hutch bmx bike and the pipe wrench did the trick.