Taper of a Mavic Bottom Bracket

[bambam]

Anybody know what the taper of a mavic Bottom Bracket is?
I've looked but can't find a definitive answer?

This would be a Bottom Bracket thay looks like this one:
http://images.search.yahoo.com/image...mb=pURdc8IWl1b

Thanks,
BamBam

[oldpotatoe]

Originally Posted by bambam

Anybody know what the taper of a mavic Bottom Bracket is?

This would be a Bottom Bracket thay looks like this one:
http://images.search.yahoo.com/image...mb=pURdc8IWl1b

Thanks,
BamBam

JIS. I sub-bed 113mm UN-72 for Mavic all the time. 114 and 116 were the Mavic road lengths.

[bambam]

Originally Posted by oldpotatoe

JIS. I sub-bed 113mm UN-72 for Mavic all the time. 114 and 116 were the Mavic road lengths.

OP thanks. I just wasn't sure if they were campy or shimano.

This bring up another question. Will Shimano 9 speed cranksets work with 11 speed campy everything else?

Thanks,
Bambam

[Bob Loblaw]

Should work fine.

I haven't any experience with that exact setup, but I have run 7 speed cranks with a 10 speed drivetrain. Worked well enough to race criteriums, which I did on it.

BL

[ultraman6970]

"Will Shimano 9 speed cranksets work with 11 speed campy everything else?"

Yes, the beauty of campy

[Gummee]

Originally Posted by oldpotatoe

JIS. I sub-bed 113mm UN-72 for Mavic all the time. 114 and 116 were the Mavic road lengths.

I tried that and split the spider where the BB meets the crank.

Exit one starfish crankset!

M

[oldpotatoe]

Originally Posted by Gummee

I tried that and split the spider where the BB meets the crank.

Exit one starfish crankset!

M

Sorry, but it's still JIS taper.

[harryschwartzma]

How'd ya do that? That's alot of aluminum 'round the starfish.

[bambam]

I forgot that the shimano 9 speeds are octolink.
I would love to find a starfish or maybe go another route. TA,Sugino maybe?
I think if I go with anyting less thatn a 8/9 speed crankset I may have problems with the chain going between the two chainrings.

The BB thread will allow me to thread a standard BB cup(Italian) in about 3 turns but I know I need more or I will have to use this Mavic BB.

Does anybody know the best way to clean out the BB threads?
I would really like to use the Ultratourque crank that goes with the rest of the campy bits.

Thanks,
BamBam

[oldpotatoe]

Originally Posted by bambam

I forgot that the shimano 9 speeds are octolink.
I would love to find a starfish or maybe go another route. TA,Sugino maybe?
I think if I go with anyting less thatn a 8/9 speed crankset I may have problems with the chain going between the two chainrings.

The BB thread will allow me to thread a standard BB cup(Italian) in about 3 turns but I know I need more or I will have to use this Mavic BB.

Does anybody know the best way to clean out the BB threads?
I would really like to use the Ultratourque crank that goes with the rest of the campy bits.

Thanks,
BamBam

Good bike shop with a tap with the far superior Italian threading.

[Kontact]

Originally Posted by bambam

I forgot that the shimano 9 speeds are octolink.
I would love to find a starfish or maybe go another route. TA,Sugino maybe?
I think if I go with anyting less thatn a 8/9 speed crankset I may have problems with the chain going between the two chainrings.

The BB thread will allow me to thread a standard BB cup(Italian) in about 3 turns but I know I need more or I will have to use this Mavic BB.

Does anybody know the best way to clean out the BB threads?
I would really like to use the Ultratourque crank that goes with the rest of the campy bits.

Thanks,
BamBam

It's called chasing the threads. Bike shops do that with the correct chasing tool.

Mavic chamfered BB shells are supposed to allow you to go back to threaded BBs if you want. I have at least one bike with a chamfered shell that has a threaded BB in it, if that is your issue.

Velo Orange makes a modern threadless BB as well. But if you haven't tried fixing your frame, I wouldn't buy more stuff until you've done that.


You can "convert" any crankset to 9/10 spacing by replacing the inner ring.

[Gummee]

Originally Posted by harryschwartzma

How'd ya do that? That's alot of aluminum 'round the starfish.

Got me man! If I knew what I did (it was a bunch of years ago) I certainly wouldn't do it again!

M

[jvp]

My '89 Paramount had a standard dura ace double w/ mavic chamfered BB, I switched it out to a sugino compact w/ phil wood BB after having the threads chased, no problems.

[bambam]

Thanks for all the help.

I'm hoping I can clean it and ease a BB in there.
If not I plan on taking it to a bike shop or builder and have them chase it.

If the thread are toat I just want to work through all my posibilities.

Is there a prefered way to clean out the shell?

[merckx]

I have a Mavic chamfering BB tool if you are interested. $20.00 plus shipping.