Bikes that use the BSA threaded bottom bracket
#1
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Bikes that use the BSA threaded bottom bracket
Does anyone know an efficient way to determine which manufacturers and models use the BSA bottom bracket standard? Looking to replace a frame with a used of recent model years. Want to be able to just swap over my groupset which is SRAM GXP crankset.
#3
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No, you can adapt BB30 with a readily available threaded sleeve. None of the BB30 problems persist. Just Google it.
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Yes and many of the mechanics I know only own BSA BB bikes themselves. The industry may move entirely in that direction but clearly for most folks this is not as good or even needed. Give me a standard BSA BB any day over the press fit. The press can work but it just is not as simple. No different that internal cables. Sure internal cables are out of the way, neater in some respects but frankly external routing still is the best for most folks.
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Yes and many of the mechanics I know only own BSA BB bikes themselves. The industry may move entirely in that direction but clearly for most folks this is not as good or even needed. Give me a standard BSA BB any day over the press fit. The press can work but it just is not as simple. No different that internal cables. Sure internal cables are out of the way, neater in some respects but frankly external routing still is the best for most folks.
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#8
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three of the four frames i bought over the last three years came with a threaded 58mm BSA BB shell. and the other one was offered with one, i just needed a PF30 shell is all.
#9
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Looking for a frame or the whole bike? There are models out there, the Jamis Quest and Ventura lines appear to have BSA standard. Most of those I've seen are middle to lower range in the manufacturer's line, but they are made. All depends on what you're after and how much bling you need to have
#10
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Standard BSA 68mm threaded
Adapters/conversion/spacers for BB30, PF30, BBright, BB386, BB86, BB90, BBright
Does that sound right? Some reference: Road Bike Action | The Bottom Bracket Breakdown
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https://www.praxiscycles.com/wp-conte...RAME-GUIDE.pdf
find a fram you like and buy the adapter to fit
easy peasy
find a fram you like and buy the adapter to fit
easy peasy
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Yes and many of the mechanics I know only own BSA BB bikes themselves. The industry may move entirely in that direction but clearly for most folks this is not as good or even needed. Give me a standard BSA BB any day over the press fit. The press can work but it just is not as simple. No different that internal cables. Sure internal cables are out of the way, neater in some respects but frankly external routing still is the best for most folks.
#14
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Anything using a threaded BB, as opposed to ones like BB30 or whatever, will be BSC (aka BSA or ISO). SO unless the maker is touting his "new and improved" BB system, odds are it's BSC.
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
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#16
https://www.praxiscycles.com/wp-conte...RAME-GUIDE.pdf
find a fram you like and buy the adapter to fit
easy peasy
find a fram you like and buy the adapter to fit
easy peasy
Stay away from Trek and Cervelo and other bikes with a 86-90mm wide BB shell. Choose a bike with BB30 and PF30 and you will be fine.
You have an option of either running them per design intent but honestly, a better approach is the Praxis collet BB sleeve that works for both which creates a BSA interface. This is what I would do. Then you can run a DA or Campy UT crank with outboard bearings and threaded cups.
Important point is, you can't do this with Cervelo or Trek wider shell BB's. They can't be regressed to BSA via collet sleeve like ubiquitous BB/PF30.
HTH
#17
You are agreeing with something that doesn't have much relevance. Among mid to high end road bikes, BSA accounts probably for less than 10% of all the bikes available. So adhering to a BSA frameset is severly limiting in terms of other as important, if not more important, properties desired in a frameset.
A better approach, is what I explained in the thread above.
A better approach, is what I explained in the thread above.
Last edited by Campag4life; 05-07-15 at 08:19 AM.
#18
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You are agreeing with something that doesn't have much relevance. Among mid to high end road bikes, BSA accounts probably for less than 10% of all the bikes available. So adhering to a BSA frameset is severing limiting in terms of other as if not more important properties desired in a frameset.
A better approach, is what I explained in the thread above.
A better approach, is what I explained in the thread above.
#19
OP, the beauty of having that GXP crank is that it can be fitted on to just about any frame. BSA, BB30, PF30, BB86. You may need to buy adapters for some or a new bottom bracket for others, but the crank will still work.
#20
Some manufacturers have bike catalog archives you can look at, and the specifications should indicate what kind of bb a bike has. I know Cannondale, Trek, and Jamis have archives online, and others are likely too.
If you're buying second hand off eBay or elsewhere, you can just always ask the seller for frame specs. I personally prefer threaded bb shell for ease of use, but as mentioned, I'd use the Praxis adapter if I liked the frame but wanted to stick with threaded external bearing bb.
If you're buying second hand off eBay or elsewhere, you can just always ask the seller for frame specs. I personally prefer threaded bb shell for ease of use, but as mentioned, I'd use the Praxis adapter if I liked the frame but wanted to stick with threaded external bearing bb.
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Erik_A
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