Bottom Bracket Boycott
shmooster
Posts: 335
Now that we know that Chris Froome won the Tour on a 68mm Italian BB it's time to show the manufacturers that BB30, BB86 etc are all toss and should be consigned to the bin. Vote with your feet people and don't buy any bike that doesn't have an Italian 68mm BB.
0
Comments
-
Isn't 68mm the English BB width?0
-
Vote with your feet people and don't buy any bike that doesn't have an Italian 68mm BB.
That won't be difficult...0 -
Italian is 70mm, but the point is valid. No marginal gains in oversized crank axles or pressfit BBs or Sky would be using them.0
-
Indeed, being pedantic aside I'll only purchase 68mm BB framesets; largely for the ease of maintenance and any benefits seem to be nothing more than marketing hype.0
-
yes there is, it makes things cheaper to make.No marginal gains in oversized crank axles or pressfit BBs ."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Vote with your feet people and don't buy any bike that doesn't have an Italian 68mm BB.
That won't be difficult...
I meant 68mm english obviously (facepalm)0 -
I guess 24 mm crank axles are stiff enough and any larger diameter is of no use for a rouleur... there might be a point in using wider spindles for sprinters, but considering most track bikes still work on traditional square taper axles, the need for a 30 mm axle is very much in question.left the forum March 20230
-
TBH I wouldn't use a pressfit given all the bad press (ba-dum-tish) they get but opt for standard threaded and external bearings for ease of maintainence.Advocate of disc brakes.0
-
Another PF BB hater here. I'd also vote against internal cable routing. A pain in the ar*se for looks only.0
-
I think the Dogma does actually use an Italian thread. Anyway, threaded all the way for me. I had a choice for my Scott CR1 frameset and I rejected the Shimano press fit option. My other 2 road bikes are BSA too. Funnily enough, they use different bearing systems: Shimano Hollowtech, SRAM GXP and FSA MegeExo. All silent and easy to maintain with basic tools.Vote with your feet people and don't buy any bike that doesn't have an Italian 68mm BB.
That won't be difficult...
I meant 68mm english obviously (facepalm)0 -
Now that we know that Chris Froome won the Tour on a 68mm Italian BB it's time to show the manufacturers that BB30, BB86 etc are all toss and should be consigned to the bin. Vote with your feet people and don't buy any bike that doesn't have an Italian 68mm BB.
Well that's going to work; off the top of your head, how many frames can you name that fit that criteria, and come at an affordable price?“Faster, Faster, until the thrill of speed overcomes the fear of death.” Hunter S Thompson0 -
Most of the lower spec Felts have threaded BBs, e.g. the carbon F5 has BSA but F4 has BB30. I'm not sure about other manufacturers, but I believe Colnago, Pinarello, Look, Time etc. still make decent bikes with threaded BBs.Now that we know that Chris Froome won the Tour on a 68mm Italian BB it's time to show the manufacturers that BB30, BB86 etc are all toss and should be consigned to the bin. Vote with your feet people and don't buy any bike that doesn't have an Italian 68mm BB.
Well that's going to work; off the top of your head, how many frames can you name that fit that criteria, and come at an affordable price?0 -
I actually like my BB30 frame. i don't experience any creaking and i can buy quality 6806 bearings for less than 50p each. Removing the crank is fast and easy as there is only 1 bolt to undo. Plus i have plenty of other cranks and power meter options available to me if i use adapters. Also BB30 saves abit of weight over threaded cups.0
-
Well that's going to work; off the top of your head, how many frames can you name that fit that criteria, and come at an affordable price?
I just bought my wife a Vitus full carbon road bike, full 105, with Fulcrum wheels from CRC for £1009, and it has a 68mm English BB. That seems to fit the criteria pretty well.0 -
I thought Italian/English referred to the direction of the threads rather than dimensions. English BB have the threads in opposite directions on opposite sides of the BB so that neither side can loosen off as you pedal whereas Italian have both threads in the same direction.
But I am ready to stand firm against crappy bottom brackets after pressfitgate on my commuter.0 -
It also refers to the width and the thread pitchI thought Italian/English referred to the direction of the threads rather than dimensions. English BB have the threads in opposite directions on opposite sides of the BB so that neither side can loosen off as you pedal whereas Italian have both threads in the same direction.
But I am ready to stand firm against crappy bottom brackets after pressfitgate on my commuter.
See http://www.sheldonbrown.com/bbsize.htmlStandard: Threading Adjustable (left) cup/cone direction Fixed(right) cup/cone direction Shell Width Applications/Notes
British/I.S.O. 1.370" X 24 tpi / 1.375" X 24 tpi right left Standard 68 mm / O.S. 73 mm The overwhelming majority of bicycles in current production. British and I.S.O. are interchangeable.
Italian 36 mm X 24 tpi right right (wrong!) 70 mm Italian and some high-end French bicycles. Prone to problems due to the right threaded fixed cup, which tends to unscrew itself in use.0 -
Why not just fit a Praxis, Rotor or FSA etc BB converter rather than forego the bike you want?I ride a bike. Doesn't make me green or a tree hugger. I drive a car too.0
-
Why not just fit a Praxis, Rotor or FSA etc BB converter rather than forego the bike you want?
Agreed if there's one available for your need, and fit it right from the off. I used a praxis BB30 one when building a frame up that was BB30 purely because I thought it was daft not to particularly when I could understand the advantage of the design in 2 seconds flat.0 -
Why not just fit a Praxis, Rotor or FSA etc BB converter rather than forego the bike you want?
First thing I did with my CAAD10 was ditch the BB30 and fit an FSA adaptor. Now running SRAM GXP bottom bracket and it's perfect.
At the 'etape 'village' two weeks ago, the Passoni designer/sales bod agreed. He much referred good old fashioned BBs, and the bikes on display conformed to that standard.
Very beautiful bikes, by the way! http://www.passoni.it/
0 -
Can you blame manufacturers in a crowded marketplace for trying to make there product distinctive in some way. One way is developing new standards and trying to sell them. Threaded bb's do offer many advantages over press fit but press fit is not all bad. Viscount were doing it in the 70's and klein quantum had it in the 90's both of these worked very well although getting the axle out is a pain. The BB86 standard does not seem to give issues if fitted properly.
Personally I use threaded bb's in all my bikes and many have square taper bb's.http://www.thecycleclinic.co.uk -wheel building and other stuff.0 -
Why not just fit a Praxis, Rotor or FSA etc BB converter rather than forego the bike you want?
First thing I did with my CAAD10 was ditch the BB30 and fit an FSA adaptor. Now running SRAM GXP bottom bracket and it's perfect.
At the 'etape 'village' two weeks ago, the Passoni designer/sales bod agreed. He much referred good old fashioned BBs, and the bikes on display conformed to that standard.
Very beautiful bikes, by the way! http://www.passoni.it/
i loved the red sram gxp cups on my canyon and was gutted when i found out they were £200 plus (they're ceramic). fortunately i was pointed in the direction of uniti BBs by a very experienced local rider and i got their metallic red ceramic BB for under £40."Unfortunately these days a lot of people don’t understand the real quality of a bike" Ernesto Colnago0 -
I also fitted a Praxis Works adapter to my Tarmac so i could put a full 105 groupset on it, but the £60 for the adapter (plus fitting by the LBS as I didn't have the right tools) added a lot to the cost of the conversion as the groupset itself was only £300. That cost massively offsets the marginal savings the manufacturers might get from using BB30.0
-
yes there is, it makes things cheaper to make.No marginal gains in oversized crank axles or pressfit BBs .
But not necessarily cheaper for us to buy. I don't buy the stiffer BB area BS either. I've been riding for over 30 years and had loads of BSA equipped bikes in that time and never have I thought "Wow! I could do with a stiffer bottom bracket!".0 -
yes there is, it makes things cheaper to make.No marginal gains in oversized crank axles or pressfit BBs .
But not necessarily cheaper for us to buy. I don't buy the stiffer BB area BS either. I've been riding for over 30 years and had loads of BSA equipped bikes in that time and never have I thought "Wow! I could do with a stiffer bottom bracket!".
This, apart from anything else if square taper isn't up to snuff, why do so many continue to use it on the track?0 -
I don't know why any manufacturers would continue produce frames with Italian BB threads when the British standard has all the same advantages without the potential for the BB to unscrew itself in use.English BB have the threads in opposite directions on opposite sides of the BB so that neither side can loosen off as you pedal whereas Italian have both threads in the same direction.0 -
Because they are Italian. My old steel Bottecchia required monster torque at the BB to run without issues of unscrewing, not easy either with the park veloce fit BB tool I had! I never used thread lock just grease as I was more concerned about the thing seizing. Threaded BB every time, Eng or It.Caveat - I buy and ride cheap, however, I reserve the right to advise on expensive kit that I have never actually used and possibly never will0
-
I can understand why a carbon frame would be made with a pressfit BB so that they don't have to put an Al BB shell in. They still don't work but I can see the reasoning. But why do manufacturer insist in using them in Al frames when they could have a well CNC machined Al BB shell with tight tolerances and a threaded BB.0
-
I agree with this. Whilst it is possible to have a press fit with no problems, or threaded with problems, it's easier to deal with threaded at home.TBH I wouldn't use a pressfit given all the bad press (ba-dum-tish) they get but opt for standard threaded and external bearings for ease of maintainence.0 -
How could Froomeys bike have been stiff enough?Pegoretti
Colnago
Cervelo
Campagnolo0 -
Hope ceramic press fit on my foil...sweet0
