BB strength
04-10-16 | 04:38 AM
#1
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BB strength
I bought a Trek 920 recently. The shift cables are run interior, rear brake housing runs exterior. The exit opening just above the BB shell is about 5 cm, by about 1/4 in. , full width of the down tube which seems to be 5x5 cm squarish. I've heard BBs are more about lateral strength. Should I be concerned about BB integrity?
Thanks!!
Thanks!!
04-10-16 | 05:11 AM
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I bought a Trek 920 recently. The shift cables are run interior, rear brake housing runs exterior. The exit opening just above the BB shell is about 5 cm, by about 1/4 in. , full width of the down tube which seems to be 5x5 cm squarish. I've heard BBs are more about lateral strength. Should I be concerned about BB integrity?
Thanks!!
Thanks!!
04-10-16 | 10:11 AM
#3
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From: Ffld Cnty Connecticut
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Looks pretty strong to me.
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Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike.
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04-10-16 | 10:54 AM
#4
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From: Santa Rosa, California
Bikes: Waterford 953 RS-22, several Paramounts
I would have zero concerns. The bottom of the down tube laps the BB shell and the welds at the BB shell edges look really beefy.
04-10-16 | 06:17 PM
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04-10-16 | 07:02 PM
#6
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From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
In theory when compared to a DT that contacted the shell on center (and presumably was fully joined) there will be a lesser stiffness. But in practice these bikes are rather over built and already far stiffer then what we rode when we were young. I think the same can be said for strength too. Andy.
