Yes, I still HATE press fit bottom brackets
12-28-16, 12:51 PM
#26
Chases Dogs for Sport
Thread Starter
Tighter tolerances at what temperature? Whenever the frame material is different than the bearing material, the components change size with temperature at different rates. Then the creaks begin. (This is why, oh so many decades ago, bike manufacturers went with threaded BBs. Thread interfaces cure the problem.)
12-28-16, 12:57 PM
#28
Banned
Un Road Bike , Frame on My Touring rig uses an Oversize Bearing, with a 17MM ID. the BB shell came from Burly tandem frame parts.
It was the stoker's BB, so combines the front and rear power input..
The square taper Axle has a spacer tube, in between the 2 bearings, and the BB shell has a snap Ring on the outside of the bearing.
Frame tubes were Butt TIG welded on the outside , without holes penetrating the BB shell ..
adding a Zirk to fill it, the whole space between the bearings is a large volume of waterproof Grease.
It was the stoker's BB, so combines the front and rear power input..
The square taper Axle has a spacer tube, in between the 2 bearings, and the BB shell has a snap Ring on the outside of the bearing.
Frame tubes were Butt TIG welded on the outside , without holes penetrating the BB shell ..
adding a Zirk to fill it, the whole space between the bearings is a large volume of waterproof Grease.
12-28-16, 01:05 PM
#29
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I won't buy a frame that doesn't have a BSA threaded shell.
Last month I: 'came into some money'. So, it was time to buy my dream titanium bike: the Moot Vamoots RSL. I have two other great Ti, bikes, but what the hell. I was within hair of pulling the trigger, when I realized that the Moots has a PF BB shell. Damn - no sale.
Any other recommendations?
Last month I: 'came into some money'. So, it was time to buy my dream titanium bike: the Moot Vamoots RSL. I have two other great Ti, bikes, but what the hell. I was within hair of pulling the trigger, when I realized that the Moots has a PF BB shell. Damn - no sale.
Any other recommendations?
-Seven
-Engin
-Steve Potts
-Firefly
-Mosaic
-Stinner
-Oddity
-Ground Up
-22Bikes
-Mike DeSalvo
-Bilenky
-Black Sheep
Or check out Foundry Cycles (a QBP brand). They have some awesome butted Ti frames with BSA bbs.
Last edited by TenGrainBread; 12-28-16 at 01:13 PM.
12-28-16, 01:15 PM
#30
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If you're willing to wait a bit longer, you can get a custom frame from a smaller builder that will be more unique and probably cost less than the Moots. These are some awesome ti builders and they probably all prefer BSA.
-Seven
-Engin
-Steve Potts
-Firefly
-Mosaic
-Stinner
-Oddity
-Ground Up
-22Bikes
-Mike DeSalvo
-Bilenky
-Black Sheep
Or check out Foundry Cycles (a QBP brand). They have some awesome butted Ti frames with BSA bbs.
-Seven
-Engin
-Steve Potts
-Firefly
-Mosaic
-Stinner
-Oddity
-Ground Up
-22Bikes
-Mike DeSalvo
-Bilenky
-Black Sheep
Or check out Foundry Cycles (a QBP brand). They have some awesome butted Ti frames with BSA bbs.
12-28-16, 01:41 PM
#31
Should Be More Popular
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12-28-16, 02:49 PM
#32
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I still have several square taper - loose bearing BBs. I have a Ti Super Record from 1980.
They are not as nice as what you can get. Sure - off the shelf adapters, and press things are gross. But don't use them. I take the std frames BB30, PF30 and put a Wheels Mfg BB in them and that is better than any loose ball setup. That brings bearings out. Then I believe in steel 24mm over alloy 30mm spindles - so that helps.
They are not as nice as what you can get. Sure - off the shelf adapters, and press things are gross. But don't use them. I take the std frames BB30, PF30 and put a Wheels Mfg BB in them and that is better than any loose ball setup. That brings bearings out. Then I believe in steel 24mm over alloy 30mm spindles - so that helps.
Likes For Doge:
12-28-16, 04:08 PM
#34
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12-28-16, 04:21 PM
#35
Senior Member
Whatever happened to that "Industry of the Voice guy" who could sugar coat
BB30 inside and out?
BB30 inside and out?
12-28-16, 05:27 PM
#37
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12-28-16, 06:06 PM
#39
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I think they've had plenty of time to get it right if it could be made right.
12-28-16, 06:40 PM
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ok this is a serious question
Does anyone like the PF30/BB30? I am building a super Six and right now I have a choice of which way to go PF30 or drop another $75 and get the wheels mfg adaptor for a 24 mm spindle.
need some serious advice as I want it correct from the start
Does anyone like the PF30/BB30? I am building a super Six and right now I have a choice of which way to go PF30 or drop another $75 and get the wheels mfg adaptor for a 24 mm spindle.
need some serious advice as I want it correct from the start
12-28-16, 06:46 PM
#43
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ok this is a serious question
Does anyone like the PF30/BB30? I am building a super Six and right now I have a choice of which way to go PF30 or drop another $75 and get the wheels mfg adaptor for a 24 mm spindle.
need some serious advice as I want it correct from the start
Does anyone like the PF30/BB30? I am building a super Six and right now I have a choice of which way to go PF30 or drop another $75 and get the wheels mfg adaptor for a 24 mm spindle.
need some serious advice as I want it correct from the start
12-28-16, 07:11 PM
#44
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12-28-16, 07:12 PM
#45
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Unfortunately you can't make it right.
12-28-16, 07:24 PM
#47
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Well, acknowledging that your BB choices suck, it depends on what crank you want. I like Shimano cranks. You need an adapter for those. Some folks like some of the larger spindle ones. You need to do some research if you want one of those. The choices aren't all as consistently good as the Shimano choices.
12-28-16, 09:42 PM
#49
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I have been lucky. One threaded and three PFs and no creaks. One question- with threaded BBS, can they make the BB shell as wide and stiff? My Tarmac and BMC have really wide BBs and I think that contributes to the stiffness when pedaling. Can that be achieved with threaded?
12-28-16, 11:17 PM
#50
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I have been lucky. One threaded and three PFs and no creaks. One question- with threaded BBS, can they make the BB shell as wide and stiff? My Tarmac and BMC have really wide BBs and I think that contributes to the stiffness when pedaling. Can that be achieved with threaded?
The purported benefit of BB30 is a bigger crank spindle and bearing cartridge. Nothing to do with the shell really, besides what bearing size it can accommodate.