Bicycle Mechanics - bottom bracket lock rings

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balto charlie
07-13-05, 08:47 AM
Hey folks: After many failed attempts I was finally able to remove my BB but not until I damaged the plastic lockring. I also need to replace my old sealed Shimano BB. Does the new bb come with a lockring? I can't seem to locate replacement lockring at online stores(Alfred,nashbar). Maybe it's not called a lockring. One side is metal(that one is still good) and the other is plastic. Thanks Charlie


sydney
07-13-05, 08:50 AM
Hey folks: After many failed attempts I was finally able to remove my BB but not until I damaged the plastic lockring. I also need to replace my old sealed Shimano BB. Does the new bb come with a lockring? I can't seem to locate replacement lockring at online stores(Alfred,nashbar). Maybe it's not called a lockring. One side is metal(that one is still good) and the other is plastic. Thanks CharlieNew BB come with all the right stuff.

balto charlie
07-13-05, 08:54 AM
New BB come with all the right stuff.
Dude you are fast. Less than 3 minutes for the answer. Thanks Charlie


moxfyre
07-13-05, 09:30 AM
Hey folks: After many failed attempts I was finally able to remove my BB but not until I damaged the plastic lockring. I also need to replace my old sealed Shimano BB. Does the new bb come with a lockring? I can't seem to locate replacement lockring at online stores(Alfred,nashbar). Maybe it's not called a lockring. One side is metal(that one is still good) and the other is plastic. Thanks Charlie
Those things are usually called the cups, the two threaded pieces that go into the shell.

They're called cups because on old cup-and-cone bottom brackets the threaded pieces were bearing cups. Now they're basically just there to hold the bottom bracket cartridge in place. A new Shimano BB will come with them, as sydney pointed out.

Ed Holland
07-13-05, 09:57 AM
Yes, new BB cartridge is supplied with a replacement plastic lock-ring/cup. Pardon me for asking, but are you using the correct splined tool for BB installation/removal?

Cheers,

Ed

balto charlie
07-13-05, 10:46 AM
Cups! no wonder I didn't know what Iwas looking for. Seems like a stupid name since they aren't cups.
Mox: Did you ever make you tour of the Eastern shore. I posted a couple of sites for great bike maps.
Ed: Yeah I had the right tool just the wrong method. I read an old book that said to remove the drive side first, I did and it was plastic then blam she went. I then went to Park tool site and it said something similar then said....But if it is plastic remove the opposite side first. Should have read Park first. It still took a week of spraying wd40 and cranking on the 'cup' to free it.
Thanks again folks

moxfyre
07-13-05, 11:33 AM
Mox: Did you ever make you tour of the Eastern shore. I posted a couple of sites for great bike maps.
Charlie, no I haven't done my tour yet although I've got my touring bike completely set up for a trip (been commuting on it). Haven't found someone here to do it with... Although I am taking a 2-day camping getaway to Assateague this weekend and we'll do some riding around there :)

Did you do your tour? I'd love to see those maps, did you post 'em on BF?

Ed Holland
07-14-05, 07:06 AM
Cool!

LBS once had several days worth trying to free a cartridge BB from my Dawes racer - from new I dont think this bike had been assembled with ANY grease or anti-seize compound. I am a grease obsessive when it comes to bike assembly, it certainly helps a lot when things need to be removed later.

Anti seize compound (coppa-slip etc.) is recommended for BB threads, although good grease is better than nothing. I use marine trailer wheel bearing grease for everything else, after its repeated recommendation on this forum by Raiyn. Even went so far as to import a can back to the UK - it's great stuff and cheap!

Cheers & good luck with the bike,

Ed

balto charlie
07-14-05, 09:39 AM
Charlie, no I haven't done my tour yet although I've got my touring bike completely set up for a trip (been commuting on it). Haven't found someone here to do it with... Although I am taking a 2-day camping getaway to Assateague this weekend and we'll do some riding around there :)

Did you do your tour? I'd love to see those maps, did you post 'em on BF?

Mox: Yeah I drove to Tuckahoe SP, camped, left the car and biked to Lewes(Cape Henlopen SP, Delaware), camped the night then headed back in the morning. I wished I had spent a day at the beach then rode back. Both days totaled 150 miles. Make camping reservations, roads are very peaceful, lightly traveled, nice small towns. I went from Tuckahoe northeast to Fenton DE, then SE towards Lewes. Email me if you want more specifics. Here's the links for the maps. The Delmarva map cost 5.00 and the Delaware is free. If you only ride in Delaware then that is all you will need; if biking Md then get 'em both.
http://www.deldot.net/static/bike/maps/maps.html
http://tinyurl.com/b4g63
Ed: Thanks for the grease tip, I'll pick some up this wknd.

Charlie