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PostPosted: Wed Mar 04, 2015 9:16 am 
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I have a 2010 Spark 10 with XT crankset. Anyone know what BB I need I´m unsure of the BB format is it BB92 or other?

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Posted: Wed Mar 04, 2015 9:16 am 


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PostPosted: Wed Mar 04, 2015 2:08 pm 
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You can look at it yourself. If you see this:
Image
The frame uses BSA standard.

Bu if you see this:
Image
Your frame uses PF standard.

I am almost sure 2010 Spark frames uses BSA standard, but you should check (it is easier this way).


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PostPosted: Wed Mar 04, 2015 8:06 pm 
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Mine is integrated as the pf picture the problem is Scott apparantly made two versions one pf30 and one BB92 both integrated.....the bsa you picture is before this so there are three standards... and I have either pf30 or bb92...

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PostPosted: Wed Mar 04, 2015 9:11 pm 
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According to the archives it is BB92

http://issuu.com/rideonscott/docs/2010b ... 74/2666912 p17

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PostPosted: Wed Mar 04, 2015 9:12 pm 
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Call Scott with Serial Number.

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PostPosted: Wed Mar 04, 2015 9:16 pm 
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Shimano have never made a BB30 crankset. So by deduction it's either a BB90 or BB91.

And given this article in 2010 said BB90, I'm guessing it's BB90

Quote:
BB86/BB90

Some frame manufacturers like Scott, Trek, and Giant have tried to take the BB30 system even further, creating the “integrated bottom bracket.” This system requires yet another new bottom bracket shell sizing, designed around the diameter of bearings in existing external cup bottom brackets. The technology behind BB86/90 systems is similar to BB30, but it is designed to be used with existing external cup, two piece cranksets. Just like BB30, bearings are pressed into the shell, eliminating the need for cups and threads, and again, eliminating more weight. BB86 and BB90 get their names from the width of the shell (86mm and 90mm wide), while BB30 got its name from the 30mm spindle diameter. Shimano’s own adaptation and proprietary interpretation of this technology is called the “Shimano Press Fit” bearing system. Shimano has not yet adapted any of their products to the BB30 system, and is instead investing its resources into its incompatible Press Fit systems.


or maybe not :D Is that only on road bikes? In which case it's BB91

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PostPosted: Wed Mar 04, 2015 9:36 pm 
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Yes, but there are adapters for bb30 and Shimano.

Sent from my Nexus 9 using Tapatalk

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PostPosted: Wed Mar 04, 2015 11:35 pm 
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True, although I don't know if BB30 to Shimano adapters were ever used in an OEM situation.

Seriously OP, you could have had the crank off in 2 minutes and had a look.

My money is on BB91

Image

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There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM


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PostPosted: Thu Mar 05, 2015 9:41 am 
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Scott Customer service just says BB92 and does not seem to know if it´s 41A or B

A dealer in Germany specifies:

"In this case Scott used a road bottom bracket size,

Shimano Dura-Ace SM-BB92-41B Press Fit Bottom Bracket Cups."

I specifically asked again if I should not use 41A (the mtb standard) but they were adamant that I should use the road version.

I write this mainly for others seeking the same info in the future.

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PostPosted: Thu Mar 05, 2015 12:38 pm 
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That's what I said.

BB91 and BB92 are the same thing BTW. One type.

see here http://www.competitivecyclist.com/shimano-bb92-bottom-bracket

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There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM


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PostPosted: Wed Mar 11, 2015 2:52 pm 
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mrowkoob wrote:
Mine is integrated as the pf picture the problem is Scott apparantly made two versions one pf30 and one BB92 both integrated


Really? I didn't think Scott had ever made a PF30 bike?

Edit: Also arent BB92 41A and 41B identical in dimensions but with heavier internal sealing on the 41A?


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Posted: Wed Mar 11, 2015 2:52 pm 


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PostPosted: Wed Mar 11, 2015 5:16 pm 
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Scott seem to have done a few PF30 MTB frames but I've got no idea how many were sold to plebs.

I'm guessing they were made so pro's could run the BB30 XX or XX1 cranks which save a decent bit of weight over the GXP versions. Schurter has been running the BB30 cranks pretty much since SRAM XX was released.


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