Dura Ace BB/Suntour Superbe Crank Removal
10-15-09, 09:52 AM
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Dura Ace BB/Suntour Superbe Crank Removal
I've finally got a little bit of free time and I want to remove the cranks/BB from this Miele frame I have had laying around for a couple of months. The only issue? I can't seem to figure out how to get past the dust caps on the Dura Ace BB; I've googled around a bit but have not come up with anything useful.
Any help would be appreciated, this will be my first time working on a BB like this.
Any help would be appreciated, this will be my first time working on a BB like this.
10-15-09, 09:59 AM
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A bottom bracket pin spanner of the right size will do the job; I've also used a finish nail set--a small punch--and a small hammer by inserting the tip of the punch into one of the cap holes as far as it will go and then gently tapping on it to break the dust cap loose. Finally, any decent lbs should be able to remove those in pretty short order.
10-15-09, 10:11 AM
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considering the dust caps are worth some serious $$$$ I'd take care in removing them. There's a specific tool designed for it, typical BB pin snappers pins are to big. (Park has a small pin spanner)
10-15-09, 10:17 AM
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Park has a number of pin spanners. This is the best:
https://www.parktool.com/products/det...=25&item=SPA-6
They also have this one:
https://www.parktool.com/products/det...=26&item=SPA-2
https://www.parktool.com/products/det...=25&item=SPA-6
They also have this one:
https://www.parktool.com/products/det...=26&item=SPA-2
10-15-09, 10:22 AM
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An excuse to get a new tool, huzzah!
10-15-09, 10:27 AM
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The Shimano doulble ended tool may need modifying, if you look closely you'll notice the pins taper to a point. Mines filed down so the pins have a consistent width from top to bottom, it engages much better. The opposite end is for holding the backside of chainring bolts in place, it may be neccesary to narrow up the center section.
10-15-09, 02:34 PM
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
Last edited by Bianchigirll; 10-15-09 at 09:33 PM.
10-15-09, 04:19 PM
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I have Dura-Ace 7400 cranks with those dust caps. I just fashioned my own tool using a spare curtain hook. I've been using it for 23 years now 
10-15-09, 04:34 PM
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back years ago there was a funny story in Cyclist magazine about that spefic tool. it was real funny, this fred was all happy about getting this tool and his wife was complaining about all the tools he had but how his bike always seemed to be in the shop! *giggle*
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
Last edited by Bianchigirll; 10-15-09 at 08:02 PM.
10-15-09, 04:51 PM
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Is this directed at me?
I got the cups off no problem, cranks removed, axle and adjustable cup off, but I have one more question:
Does anyone know which threading my fixed cup will be? It's an early 90's Miele and as has been established, an old Dura Ace BB. My guess is British, but it doesn't seem to want to budge.
Thanks for all the help so far.
I got the cups off no problem, cranks removed, axle and adjustable cup off, but I have one more question:
Does anyone know which threading my fixed cup will be? It's an early 90's Miele and as has been established, an old Dura Ace BB. My guess is British, but it doesn't seem to want to budge.
Thanks for all the help so far.
10-15-09, 04:56 PM
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There should be markings on the BB. You are turning to the right, right?
Is this directed at me?
I got the cups off no problem, cranks removed, axle and adjustable cup off, but I have one more question:
Does anyone know which threading my fixed cup will be? It's an early 90's Miele and as has been established, an old Dura Ace BB. My guess is British, but it doesn't seem to want to budge.
Thanks for all the help so far.
I got the cups off no problem, cranks removed, axle and adjustable cup off, but I have one more question:
Does anyone know which threading my fixed cup will be? It's an early 90's Miele and as has been established, an old Dura Ace BB. My guess is British, but it doesn't seem to want to budge.
Thanks for all the help so far.
10-15-09, 05:04 PM
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Yes, I am turning to the right.
There are no markings that seem to indicate threading. It just says 1.37x24T KA.
There are no markings that seem to indicate threading. It just says 1.37x24T KA.
10-15-09, 05:42 PM
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Time to look for threads on fixed cup removal.
Try a breaker bar on the fixed cup tool first, using steady pressure.
Leverage is the key.
KA is probably the date code.
Try a breaker bar on the fixed cup tool first, using steady pressure.
Leverage is the key.
KA is probably the date code.
10-15-09, 05:43 PM
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1.37x24T = British, even if direction is not indicated, no other french/swiss/italian treading used those deminsions.
