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Author Topic: Bottom Bracket Toast?  (Read 3576 times)

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Offline BrokeSpoke

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Bottom Bracket Toast?
« on: June 21, 2008, 08:10:20 PM »
I was doing a check-up on my bike and noticed that the pedals/crank did not spin very smoothly and there was a lot of resistance while trying to spin the crank, both forward and backward. I popped the chain off to isolate the crank so I could be sure it was the problem and sure enough still a lot of resistance. does this mean I need a new bottom bracket?

Offline treadlight

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Re: Bottom Bracket Toast?
« Reply #1 on: June 21, 2008, 08:11:32 PM »
take out. inspect, clean and lube.

Offline BrokeSpoke

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Re: Bottom Bracket Toast?
« Reply #2 on: June 21, 2008, 08:31:35 PM »
Guess I need to buy a bottom bracket tool hu?
Also If I do need to buy a replacement what is a good brand? I have been looking about on MTBR and it seems like a long lasting reliable ISIS bottom bracket does not exist

Offline richie

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Re: Bottom Bracket Toast?
« Reply #3 on: June 21, 2008, 08:57:47 PM »
I just put a new Race face evolve on a friends bike.I have the same on mine.It's holding up great so far.I have seen them for 99.00, cranks,chainrings,bottom bracket.Check it out.We got his for 79.00 but it was 170mm.He just rides around town now due to knee replacement so it was no biggie for him.Best Bike Zone.com
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Offline northbkr1

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Re: Bottom Bracket Toast?
« Reply #4 on: June 21, 2008, 09:52:56 PM »
Hey Tabelstrini
Get a new Raceface Crankset. Most important of all, even though it's fun don't ride when the trails are wet and muddy. The water will ruin everything on your bike. I ruined a brand new bb in one week in Ellijay.
   Just so everyone knows, Tbalestrini spent 4.5 hrs helping me and Coach at Alafia on Thursday.
Thanks Guys

Offline FACTORe

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Re: Bottom Bracket Toast?
« Reply #5 on: June 21, 2008, 10:03:54 PM »
Hey Tabelstrini
Get a new Raceface Crankset. Most important of all, even though it's fun don't ride when the trails are wet and muddy. The water will ruin everything on your bike. I ruined a brand new bb in one week in Ellijay.
   Just so everyone knows, Tbalestrini spent 4.5 hrs helping me and Coach at Alafia on Thursday.
Thanks Guys

great work - the new parts on rollercoaster are very nice - they are breaking in great

Offline Gregg

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Re: Bottom Bracket Toast?
« Reply #6 on: June 21, 2008, 10:14:06 PM »
Yes! Thank you guys! That trail is in great shape!

Offline slowfatguy

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Re: Bottom Bracket Toast?
« Reply #7 on: June 21, 2008, 10:59:24 PM »
IMO get a new crank with outboard bearings. I've had great luck with the shimano cranks, the XT's are fairly cheap and very durable. Will have alot less problems in the long run than getting another ISIS BB.
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Offline BrokeSpoke

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Re: Bottom Bracket Toast?
« Reply #8 on: June 22, 2008, 06:55:11 AM »
Well I would like to upgrade out of the ISIS drives but for right now I'm just going to get a cheap gigapipe that would be a temporary fix until I have the money to upgrade, my wheelset must come first and the crank can wait. I'm also going to order a SRAM PC-951 chain next week because I'm not sure if this chain will hold up long since I had that pin out and slightly damaged the chain putting it back in.

Offline BrokeSpoke

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Re: Bottom Bracket Toast?
« Reply #9 on: June 22, 2008, 12:36:29 PM »
when you talk about 170mm -175mm what is that referring to?

Offline Paragonman

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Re: Bottom Bracket Toast?
« Reply #10 on: June 22, 2008, 12:55:32 PM »
when you talk about 170mm -175mm what is that referring to?

Crank arm length
This is gonna hurt

Offline BrokeSpoke

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Re: Bottom Bracket Toast?
« Reply #11 on: June 22, 2008, 01:35:19 PM »
thanks

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Re: Bottom Bracket Toast?
« Reply #12 on: June 22, 2008, 10:03:26 PM »
While the Raceface cranks themselves are nice, their bearing cups are CRAP!!!!!!!!! :( As mentioned earlier about riding in moisture, I killed a set of Raceface bearings in less then 2 weeks with marginal moisture exposure. Enter a new set of Shimano bearing cups which were then tested at the Squiggy race. After disassembly I found NO water in the bottom bracket and the Shimano cups are still as SILKY smooth as the day I installed them :) For the money it's hard to beat the XT set.

Offline Jimbo

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Re: Bottom Bracket Toast?
« Reply #13 on: June 23, 2008, 10:03:28 AM »
I can attest to the XT bearings being resistant to water and muck.  At this years Ididaride I rode through so much soup that my drivetrain was just grinding away from all the mud.  Everyone that was there knows exactly what I'm talking about.  When I got home I took everything apart, dried it off, and lubed it up.  The crank is just as quiet as it was when new. 
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Offline Dave In Odessa

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Re: Bottom Bracket Toast?
« Reply #14 on: June 23, 2008, 10:44:58 AM »
So if the bottom bracket bearings get toasted, is there any hope behing replacing the whole BB?  My wife's BB was making all kinds of crunchy noises this weekend so I swapped it out.  Can you purchase new bearings for the BB?  The bearings are sealed so I can't see effectively cleaning and re-packing the bearings  ???
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