BB30 query - which creaks less?
01-15-19, 03:42 PM
#1
Senior Member
Thread Starter
Join Date: Oct 2005
Location: SW Ohio
Posts: 3,682
Bikes: Puch Marco Polo, Saint Tropez, Masi Gran Criterium
Mentioned: 25 Post(s)
Tagged: 0 Thread(s)
Quoted: 1163 Post(s)
Liked 442 Times
in
315 Posts
BB30 query - which creaks less?
i’m Building up an NOS Cannondale CAAD9 BB30 frameset and would like to run 24mm cranks preferably.
or, not... I started looking at BB30 Cannondale Hollowgram cranks with the 30mm spindle and they appear very well built.
I want to install a bottom bracket that is not going to creak. I was wondering if it matters if you run the 30mm axle cranks or if 24 mm cranks are OK and noise free as well?
Thanks for any insights you could provide to the conversation....
or, not... I started looking at BB30 Cannondale Hollowgram cranks with the 30mm spindle and they appear very well built.
I want to install a bottom bracket that is not going to creak. I was wondering if it matters if you run the 30mm axle cranks or if 24 mm cranks are OK and noise free as well?
Thanks for any insights you could provide to the conversation....
01-15-19, 04:04 PM
#2
Senior Member
I think these guys have a thread together bottom bracket for your Cannondale. I have installed one on my bike with a pressfit bb and so far no noises.
https://wheelsmfg.com/bottom-brackets.html
https://wheelsmfg.com/bottom-brackets.html
01-15-19, 05:08 PM
#3
Non omnino gravis
Just put a Wheels Mfg. threaded bracket in my Cervelo, replacing the factory Rotor PF30. Strongly recommend. Once that threaded housing is in, you're set. You can just replace the bearings, which are as little as 3 bucks each.
I don't think spindle size will have any impact on the potential for creaking-- just with a 24mm hole instead of a 30mm hole, the bearings will (maybe?) last longer.
I don't think spindle size will have any impact on the potential for creaking-- just with a 24mm hole instead of a 30mm hole, the bearings will (maybe?) last longer.
__________________
01-15-19, 05:25 PM
#4
Senior Member
Join Date: Jul 2002
Location: Sacramento, California, USA
Posts: 40,865
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
Mentioned: 68 Post(s)
Tagged: 0 Thread(s)
Quoted: 2952 Post(s)
Liked 3,106 Times
in
1,417 Posts
I went with a Praxis BB for my Specialized. Dead silent perfect.
01-15-19, 05:42 PM
#5
- Soli Deo Gloria -
Join Date: Aug 2015
Location: Northwest Georgia
Posts: 14,779
Bikes: 2018 Rodriguez Custom Fixed Gear, 2017 Niner RLT 9 RDO, 2015 Bianchi Pista, 2002 Fuji Robaix
Mentioned: 235 Post(s)
Tagged: 0 Thread(s)
Quoted: 6844 Post(s)
Liked 736 Times
in
469 Posts
Praxis Conversion and Enduro Torqtite both eliminate pressing and will not creak.
01-16-19, 12:38 AM
#6
Senior Member
Join Date: Dec 2009
Location: Melbourne, Oz
Posts: 9,547
Bikes: https://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=152015&p=1404231
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1529 Post(s)
Liked 718 Times
in
510 Posts
I'm of the mind that if your frame has a BB30 shell, make the most of it with a BB30 crank. Lighter, stiffer, and the main thing is, heel clearance that's been missing since external bearings became a thing.
01-16-19, 07:53 PM
#8
Senior Member
Join Date: Oct 2004
Posts: 700
Bikes: Cannondale CAAD10 Team, Giant TCR
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I second using a BB30 crank. Be careful when installing the bearings though. Imperfections on the BB shell and/or the bearings not sitting squarely due to imroper installation can cause the crank to creak especially under power (hard efforts). It is recommended to use a retaining compound like Loctite 672 to prevent movement.
01-16-19, 10:39 PM
#9
Senior Member
Join Date: May 2003
Location: Mountain Brook. AL
Posts: 4,002
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 303 Post(s)
Likes: 0
Liked 136 Times
in
104 Posts
FWIW I recently installed an FSA Megaevo 30mm spindle/BB and unlike the 24mm I was accustomed to which is slip fit in the bearings,
ie the spindle just slides easily through the bearings, I found the 30mm spindle was a force fit. Looking on various sites I came across the
suggestion to put the spindle/crank in the freezer for 30-60 minutes and it will slide in easily (called shrink-fit by the bearing people). It
worked a treat. Based on the tighter fit I would predict a bit less likelihood of creak with the 30 over the 24. YMMV
Of course eventual removal of the 30mm will require some persuasion.
ie the spindle just slides easily through the bearings, I found the 30mm spindle was a force fit. Looking on various sites I came across the
suggestion to put the spindle/crank in the freezer for 30-60 minutes and it will slide in easily (called shrink-fit by the bearing people). It
worked a treat. Based on the tighter fit I would predict a bit less likelihood of creak with the 30 over the 24. YMMV
Of course eventual removal of the 30mm will require some persuasion.
01-16-19, 11:02 PM
#10
Senior Member
Join Date: Oct 2004
Posts: 700
Bikes: Cannondale CAAD10 Team, Giant TCR
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The creaking is caused by the bearings' outer race moving against the inside face of the BB shell which it is not supposed to do.
01-17-19, 12:28 PM
#11
Senior Member
Join Date: Jul 2002
Location: Sacramento, California, USA
Posts: 40,865
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
Mentioned: 68 Post(s)
Tagged: 0 Thread(s)
Quoted: 2952 Post(s)
Liked 3,106 Times
in
1,417 Posts
I should add that my Specialized came with a perfectly fine FSA BB30 crankset, but I wanted to use my Quarq which is built on a SRAM crankset with a 24/22mm spindle. If you don't have a compelling reason to put a 24 or 22mm crankset, it probably makes more sense to keep the BB330 crankset.
03-18-19, 10:20 AM
#12
Senior Member
Just put a Wheels Mfg. threaded bracket in my Cervelo, replacing the factory Rotor PF30. Strongly recommend. Once that threaded housing is in, you're set. You can just replace the bearings, which are as little as 3 bucks each.
I don't think spindle size will have any impact on the potential for creaking-- just with a 24mm hole instead of a 30mm hole, the bearings will (maybe?) last longer.
I don't think spindle size will have any impact on the potential for creaking-- just with a 24mm hole instead of a 30mm hole, the bearings will (maybe?) last longer.
03-18-19, 12:23 PM
#13
Banned
Like Loc Tite for bolts there is sealed bearing seating compounds.. to apply during assembly..
seek out a sealed bearing with a 24mm ID and what ever your frame is for the OD
I assume you have a taste for press fit frames...
Industrial Standard number codes; the bearings have ID, OD and thickness dimensions..
...
seek out a sealed bearing with a 24mm ID and what ever your frame is for the OD
I assume you have a taste for press fit frames...
Industrial Standard number codes; the bearings have ID, OD and thickness dimensions..
...
Last edited by fietsbob; 03-18-19 at 12:29 PM.
03-18-19, 01:52 PM
#14
Non omnino gravis
Install manual says 35nm-50nm, which is a helluva range. I went for 45nm on the wrench. So far so good.
03-18-19, 04:29 PM
#15
Senior Member
03-18-19, 06:28 PM
#16
Non omnino gravis
Related-unrelated, I just regreased the English-threaded FSA BB6000 on my Ritchey and the stamped torque spec is 45nm. Torque for the FSA Gossamer crank arm, a bizarre 41nm.
__________________
03-19-19, 11:07 AM
#17
Senior Member
I just got back from a ride, my Niner with the Wheels Mfg BB is SILENT again. Oh happy day!
