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BB30 FSA Gosamer or Ultegra 6700 (needing to install BB24 adapter)

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BB30 FSA Gosamer or Ultegra 6700 (needing to install BB24 adapter)

Old 12-05-12, 08:53 PM
  #1  
edmundoab
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BB30 FSA Gosamer or Ultegra 6700 (needing to install BB24 adapter)

Dear All,

As I have difficulties finding people who could advise me.

I am currently riding a Cannondale Supersix 5 Carbon 105 which comes with the stock BB30 FSA Gosamer
Last year I had a fault with my pedal where it got loose for some reason and eroded half the threads in the crank arms.
After checking with the authorized dealer, they mention it was still safe to use so long it does not get loose (torque still okay)

Therefore I am using it until today.
However, at that point when I thought my crank was busted, I had purchased an Ultegra 6700 crank only as a back up for the worst case scenario.

Thinking if it is worth to change and spending some cash on the BB adapter....
Any thoughts or if you were in my shoes, should I just stick to the stock BB30 crank and sell off the Ultegra Crank?

Thanks for any inputs
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Old 12-05-12, 09:00 PM
  #2  
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In my case I already was using a Ultegra 6700 crank with a Shimano BB, but then my frame was sent in and replaced with a newer frame with BB30. I wanted to use my Ultegra crank and ended up going with a KCNC adaptor that works very well on BB30 frames. Very easy to install, but you will need to torque it to 35 ft lbs that your LBS should be able to help you with if you dont have the tools.

https://fairwheelbikes.com/kcnc-bb30-...et-p-2926.html




Last edited by M_Wales; 12-05-12 at 09:04 PM.
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Old 12-05-12, 09:01 PM
  #3  
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Bottom bracket adapters are cheap. I got my BB30 to threaded 68mm for less than twenty bucks.

Too many issues right now with BB30, I'll wait until the kinks get worked out.
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Old 12-05-12, 09:11 PM
  #4  
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If you have to putz around at all when shifting, I'd go for it. I could never get the Gossamer to shift too well. I stuck with BB30, but went to an SRAM Force crankset - shifting was much improved.
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Old 12-05-12, 09:22 PM
  #5  
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Thanks for the feedback.
Just wondered if its worth spending the extra cash and hassle if the BB30 Gosamer is just as good.
I have heard of people saying the front shifting is not that good.
Personally for me, shifting to the big chainring may require a bit of pushing, downshift to small chain ring is fast though.

I don't know how well the ultegra performs for sure
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Old 12-05-12, 09:32 PM
  #6  
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Originally Posted by edmundoab View Post
Personally for me, shifting to the big chainring may require a bit of pushing, downshift to small chain ring is fast though.
This was exactly my experience with the Gossamer - compared to the Force crank, it took much longer to latch on and shift to the big ring and, while waiting for it, I felt that I needed to pedal daintily or it might drop the chain altogether. Not an issue now.
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Old 12-05-12, 09:38 PM
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Do you suggest that I am better off with the Ultegra since its just lying around?
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Old 12-05-12, 09:47 PM
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I haven't used it myself, but everything that I've read suggests that it's great crankset and that it shifts well. Some people don't care for the looks, but whatever.
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Old 12-05-12, 09:56 PM
  #9  
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I have an FSA Gossamer on one bike and Ultegra on another, and the Ultegra is definitely better performing on upshifts. I live in flatlands so ride the big ring all day, but if shifting performance up front was extremely important, I'd run the Ultegra crankset. On the other hand, if the Gossamer crankset shifts fine enough now, you'd probably recoup more money selling the Ultegra crankset...
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Old 12-05-12, 10:30 PM
  #10  
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Originally Posted by milkbaby View Post
I have an FSA Gossamer on one bike and Ultegra on another, and the Ultegra is definitely better performing on upshifts. I live in flatlands so ride the big ring all day, but if shifting performance up front was extremely important, I'd run the Ultegra crankset. On the other hand, if the Gossamer crankset shifts fine enough now, you'd probably recoup more money selling the Ultegra crankset...
Well, i live in malaysia where there are alot of up hills and downhills, so I upshift when I am riding down hill,
thus far, I just felt the gosamer a little hard to latch on to the big ring.. not such a big problem for now
but thinking that I wont be geting a hell lot richer selling off the ultegra which people say is a better crank overall... but whether it is worth it vs the FSA Gosamer... is something I was unsure

But your comments do lean me to swap cranks since I live in a hilly terrain area.
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Old 12-05-12, 11:24 PM
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I have the ultegra 6700 on my Roubaix and have zero complaints. It is an excellent crankset.
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Old 12-06-12, 10:02 AM
  #12  
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Originally Posted by edmundoab View Post
Dear All,

As I have difficulties finding people who could advise me.

I am currently riding a Cannondale Supersix 5 Carbon 105 which comes with the stock BB30 FSA Gosamer
Last year I had a fault with my pedal where it got loose for some reason and eroded half the threads in the crank arms.
After checking with the authorized dealer, they mention it was still safe to use so long it does not get loose (torque still okay)

Therefore I am using it until today.
However, at that point when I thought my crank was busted, I had purchased an Ultegra 6700 crank only as a back up for the worst case scenario.

Thinking if it is worth to change and spending some cash on the BB adapter....
Any thoughts or if you were in my shoes, should I just stick to the stock BB30 crank and sell off the Ultegra Crank?

Thanks for any inputs
I am not a fan of either BB30 or PF30. Shimano makes some of the best cranks on the planet...either Ultegra or DA.
So...if I had a BB30 or PF30 framset which I avoid, I suggest you run an Ultegra crank if you have one on hand.
You have many options for adapting it...the BB that M_Wales uses is a good solution. A more simple solution and more widely used are adapters sold by Wheel Mfg. These utilize the std BB30 bearings and simply space from 30mm ID to 24mm ID and space outboard for longer spindle of Shimano cranks. This is cheaper and effective. C-bear also makes alloy sleeves that adapt both BB and PF-30 BB's...effectively regress BB/PF-30 to a threaded BB which makes Ultegra cranks plug and play with Ultegra specific BB bearings...which are integrated into thread on cups.
Good luck.
PS: a nuance and subtext of running Ultegra cranks on BB/PF-30 and why they are so effective is...Ultegra and DA cranks have manually adjustable axial preload. This design is more effective for keeping BB30 bearings seated and quiet as opposed to wave washer cranks common to BB30. Although I am not a fan of the aesthetic of Ultegra or DA cranks, I believe their design to be class leading...Campy UT cranks being superb as well much much less adaptable to BB/PF-30.

Last edited by Campag4life; 12-06-12 at 10:07 AM.
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Old 12-06-12, 10:09 AM
  #13  
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Originally Posted by Campag4life View Post
I am not a fan of either BB30 or PF30.
So...if I had a BB30 or PF30 framset which I avoid,
What? I thought you were a big fan of BB30? We had epic arguments about BB30, I thought it sucked and you thought it was great.

When did you change?
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Old 12-06-12, 10:36 AM
  #14  
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give BB30 15K+ miles and they will become nightmare creaking systems for many.
personally, I will avoid all BB press-fit systems like the plague. Might be nice in the short run, and I'm not a betting man, but I have good money that BB30 will not stand the test of time...
from Park Tool site:
"The BB30 cartridge bearings are a mild interference fit into the shell. The bearing outside diameter is 42mm. The BB30 inside diameter is intended to be 41.96mm. The actual diameter may vary slightly..." sounds like great engineering to me...

expecting a lot of 'creaking' threads down the line from 'pro' frame users...
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Old 12-06-12, 11:24 AM
  #15  
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Originally Posted by Hunt-man View Post
What? I thought you were a big fan of BB30? We had epic arguments about BB30, I thought it sucked and you thought it was great.

When did you change?
More and more is now known about BB30 and PF30. I am a big fan of Specialized road bikes and BB issues abound on Specialized forums. Specialized has desperately tried to maintain 3 different BB configurations....all for marketing diversity and extract more $$ from their customers...Spesh narrow version of PF30 being the most problematic ironically on their top of the line $3.5K Sworks framesets . Latest Specialized recommended technical practice for installing Delrin bushings into virgin 46mm ID carbon shells...is to use epoxy. That's right...epoxy of plastic delrin bushings into a virgin carbon shell. By contrast on their Pro level framesets..a step down from their flagship Sworks bike they sell a traditional BB30 BB and now spec Loctite to hold bearings in place. How in the world can one reconcile such a radically different BB design for Spesh's top two framesets?...capture of bearings with alloy versus plastic? Ludicrous. Delrin to retain bearings when a rider can put body weight plus leg strength multiplied by crank arm length? Unbelievable. So basically their two so called best BB's each require loctite and/or epoxy to keep in place and one it markedly different that the other which suggests they must be as different in performance...which they are...or reliability. An abomination really and both have been a creaky mess. Their bikes are superb and yet this inexplicable gaffe all for market diversity to create perception of a better profit. Would love to part of the design review process within Specialized...no doubt there is a core of engineers there that disagree with the design direction all in favor of turning a profit. Look no further than Shimano and Campagnolo...the two top groupset mfrs in the world. Neither offer a BB30 specific crankset. So they clearly don't buy into this integrated bearing concept which is blatantly flawed to anybody that has slogged through a few engineering classes and many that haven't.
Cheers.

Last edited by Campag4life; 12-06-12 at 11:43 AM.
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Old 12-06-12, 11:59 AM
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I have a 2011 Tarmac Comp that has a standard threaded BB. That was one of the reasons I got that bike, to avoid BB30. Rival crank has run silent for two years. Too bad they don't offer anything high end with a standard BB any longer.

I have two other bikes with BB30. The Volagi Liscio currently has the KCNC adapter to run a 6703 Ultegra Triple. No issues at all. Shifting is fantastic, as it should be since everything is Shimano.

My Pedal Force CG2 currently has BB30 bearings with the Wheels Manufacturing adapters also with a 6703 Triple. I was running the Praxis converter for a while but removed it for another build in the works. The Praxis is a great design though it's heavier than other solutions.

I also have an FSA Energy alloy (in between Gossamer and SL-K in quality) triple BB30 crank. The rings are quite dreadful in the upshifting, 30 to 30 and 39 to 52.

For the original poster, I would go with the Shimano crankset, the hollow outer chainring is so much nicer than the FSA one.
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Old 12-06-12, 02:36 PM
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Originally Posted by Campag4life View Post
More and more is now known about BB30 and PF30. I am a big fan of Specialized road bikes and BB issues abound on Specialized forums. Specialized has desperately tried to maintain 3 different BB configurations....all for marketing diversity and extract more $$ from their customers...Spesh narrow version of PF30 being the most problematic ironically on their top of the line $3.5K Sworks framesets . Latest Specialized recommended technical practice for installing Delrin bushings into virgin 46mm ID carbon shells...is to use epoxy. That's right...epoxy of plastic delrin bushings into a virgin carbon shell. By contrast on their Pro level framesets..a step down from their flagship Sworks bike they sell a traditional BB30 BB and now spec Loctite to hold bearings in place. How in the world can one reconcile such a radically different BB design for Spesh's top two framesets?...capture of bearings with alloy versus plastic? Ludicrous. Delrin to retain bearings when a rider can put body weight plus leg strength multiplied by crank arm length? Unbelievable. So basically their two so called best BB's each require loctite and/or epoxy to keep in place and one it markedly different that the other which suggests they must be as different in performance...which they are...or reliability. An abomination really and both have been a creaky mess. Their bikes are superb and yet this inexplicable gaffe all for market diversity to create perception of a better profit. Would love to part of the design review process within Specialized...no doubt there is a core of engineers there that disagree with the design direction all in favor of turning a profit. Look no further than Shimano and Campagnolo...the two top groupset mfrs in the world. Neither offer a BB30 specific crankset. So they clearly don't buy into this integrated bearing concept which is blatantly flawed to anybody that has slogged through a few engineering classes and many that haven't.
Cheers.
Well I guess we are done arguing about it then! All agree that BB30 sucks.

I did have a fun time arguing with you about it in that 12 page BB30 thread from last year..... Oh the fun we have in the 41
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Old 12-06-12, 05:06 PM
  #18  
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FSA Gossamer cranks are terrible, nasty quality, 6000 series Al. versus 7000 series with SRAM Force and even ultegra. It is a cheap below entry level crank that manufacturers put on due to its cheap price (and cheap quality).
It is night and day compared to a Force crank which is in line with Ultegra cranks.

Perhaps I'm partial to Force since I have it on both my bikes and soon to be third.
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Old 12-06-12, 05:47 PM
  #19  
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Originally Posted by ThinLine View Post
FSA Gossamer cranks are terrible, nasty quality, 6000 series Al. versus 7000 series with SRAM Force and even ultegra. It is a cheap below entry level crank that manufacturers put on due to its cheap price (and cheap quality).
It is night and day compared to a Force crank which is in line with Ultegra cranks.

Perhaps I'm partial to Force since I have it on both my bikes and soon to be third.
Not to mention, the shifting quality of FSA rings is sub-par.
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Old 12-06-12, 07:07 PM
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Originally Posted by ThinLine View Post
FSA Gossamer cranks are terrible, nasty quality, 6000 series Al. versus 7000 series with SRAM Force and even ultegra. It is a cheap below entry level crank that manufacturers put on due to its cheap price (and cheap quality).
It is night and day compared to a Force crank which is in line with Ultegra cranks.

Perhaps I'm partial to Force since I have it on both my bikes and soon to be third.

Yup, I got mine stock from the bike... not really a choice and I guess the treading quality on the crank arms were pretty bad as well.
Never faced that with Shimano... oh well.
I guess Ultegra 6700 it is then.
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