Newer cranks for older MTB's?
02-24-09 | 02:00 AM
#1
Thread Starter
Senior Member
Joined: Feb 2007
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From: Colorado
Bikes: Mostly schwinn... few classics
Newer cranks for older MTB's?
I picked up an older Stumpjumper from the trash, I am not sure on year but I want to get rid of the square tapper for a newer design. Will newer MTB BB's work?
Thanks
Thanks
02-24-09 | 02:07 AM
#2
in most cases yes. check the BB width, if it is 73mm as opposed to 68mm all systems are go for a modern crank and BB.
your bike looks like an 87 or 88 and may very well be a 68mm adding slight complications... why do you want to get rid of the current set-up?
your bike looks like an 87 or 88 and may very well be a 68mm adding slight complications... why do you want to get rid of the current set-up?
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1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear
1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear
02-24-09 | 02:27 AM
#3
Thread Starter
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From: Colorado
Bikes: Mostly schwinn... few classics
I am going the SS route and would prefer if someone who is restoring a bike have good parts for that. Also I often break square tapper BB's. In a perfect world I could do a straight trade..... The bike is going to be a school commute and bad weather cruiser so I really don't want to ruin good parts
02-24-09 | 05:19 AM
#4
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From: Clev Oh
Bikes: Specialized, Schwinn
I am going the SS route and would prefer if someone who is restoring a bike have good parts for that. Also I often break square tapper BB's. In a perfect world I could do a straight trade..... The bike is going to be a school commute and bad weather cruiser so I really don't want to ruin good parts
There's a lot bigger selection of BB's in square taper if you're going SS or Fixie. Sugino has a lot of cranks that would fit the bill. They're all square taper though. Is your bike spaced 126 or 130mm? Nice ride though.
02-24-09 | 07:07 AM
#5
Velocommuter Commando
Joined: Nov 2007
Posts: 2,683
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From: Houston, Texas
Bikes: '88 Specialized Sirrus, '89 Alpine Monitor Pass, two '70 Raligh Twenties, '07 Schwinn Town & Country Trike, '07 Specialized Sirrus Hybrid
With the U-brake and graphics that very much has to be an '88.
02-25-09 | 07:07 PM
#6
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From: Ashland, VA
Bikes: The keepers: 1969 Magneet Sprint, 1971 Gitane Tour de France, 1973 Raleigh Twenty, 3 - 1986 Rossins.
Just upgraded the crank on my Gary Fisher Gitchie Gummie to a Shimano Octalink model over the weekend. Only problem I had was that the bottom bracket was a 73 and I needed a 68 - once I dug up a replacement, everything was copacetic.
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“No one in this world, so far as I know — and I have searched the records for years, and employed agents to help me — has ever lost money by underestimating the intelligence of the great masses of the plain people. Nor has anyone ever lost public office thereby.”
H.L. Mencken, (1926)
Syke
“No one in this world, so far as I know — and I have searched the records for years, and employed agents to help me — has ever lost money by underestimating the intelligence of the great masses of the plain people. Nor has anyone ever lost public office thereby.”
H.L. Mencken, (1926)
