I will report my results after I complete the second portion of the crankset/bottom bracket removal process which is removing the bottom bracket on this 2020 Rockhopper Expert 1x "stout xc" crank/bb. It is the presumed 20 tooth traditional square taper design that i will attempt to remove with the proper 20 tooth removal tool with a big pipe wrench. I would imagine this being intimidating enough for some to quit halfway without a lot of determination & extra big tools also willing to take a bold chance of using excessive force in hopes that it comes off without breaking anything or tearing the threads off the cranks or extractor bolts.Īfter slaying that dragon, i now have come to the final boss- the bottom bracket. I am still surprised at how difficult it was for me to get them off. As in there was no way i was going to remove them without using a extension pry bar or hammer to have enough force to crank the arms out. I needed to use a tremendous amount of force. You turn the main bolt in after taking the 8mm caps off, then you screw the pushing bolt through as it extracts the crank arms one by one. ![]() I was able to successfully remove the cranks today. The non drive side cup loosening clockwise means that you have a very common 73mm BSA or English threaded bb similar to this:- To see the rest of the bikes weve listed for sale click on this one and then click on Jo Cranks under Seller information. Once you get the cranks off as has already been mentioned the non drive side bb cup undoes clockwise and the tools you ordered are the right ones for the job but the crank extractor won't be needed if you have self extracting bolts. Bike Friday hinge maintenance For Bike Friday owners. How to Employ Routine Maintenance Techniques to Limit Squeaks and Creaks First things first, check to make sure your cranks are tightened to the proper torque. You have an internal cartridge unit fitted into your bike which has a 73mm width threaded bb shell. This page appears to be a community bicycle organization which fails to meet the current standard for such an article. The leather and the undercarriage of a leather saccle are both replaceable. The confusion was it can't be a press fit bb for square taper cranks. ![]() A square taper crankset is classed as a 3 piece and it's Hollowtech II type that are classed as two piece with one side permanently attached to a hollow axle. The only thing I'd respectfully disagree on is both cranks should need removing separately and one side won't be permanently attached to the spindle. ![]() It will take some good force to get the crank arm to initially break away from the spindle, this is quite normal especially if they've been on for a few years. Agree with the above, lots of different standards.
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