Singlespeed & Fixed Gear - ultimate bottom bracket ambiguity: Mavic Ellipse + Suntour Superbe Cranks...
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05-21-08, 03:39 AM
Ok, seriously, I've been a mechanic for years and I thought this would be a simple matter of looking up the measurements of each component and making the necessary compensation in spindle length, but what the hell am I gonna do here...? What the hell interface am I even supposed to use for superbes? JIS? Campy? Is the Ellipse Chainline boogeyman even real? It seems like every time a question like this is asked, everyone just starts shouting contradictory bull. please help.
05-21-08, 10:08 AM
my line of thinking has been to treat my SSP's like i would a set of Sugino 75's, except mount them on a sexier bottom bracket.
I think suntour used to use ISO (campy) tapers, especially in track cranks. FWIW, Sheldon (http://www.sheldonbrown.com/bbsize.html#suntour) says the superbe road crankset is ISO. Unfortunately the catalog (http://equusbicycle.com/bike/suntour/Superbe-Pro-page-2.jpg) just says "superbe" as the taper, which is probably neither ISO or JIS.
If they are used it might not even make a difference, since they could be deformed to whatever the previous owner used.
05-21-08, 01:38 PM
Phil Wood adjustable BB should be the best bet... and measure that chainline on the Ellipses, I've heard it's 44-46mm on the rear depending on who's asked. And Mavic has no contact email on their website.. as for the spindle type/length, email Phil Wood?
05-21-08, 04:13 PM
My understanding is Superbe is ISO
05-21-08, 06:11 PM
For what it's worth when I had Superbe Pro cranks I had them mounted on both a hatta and a sugino 75 bottom bracket without any issue. Normally I don't advocate mixing tapers but this was before I found out sugino 75 was ISO. I have no idea if the hatta is jis but it would make sense that it is giving that from what I hear most keirin racers are using dura ace square taper cranks (which from what I understand are jis, please correct me if I am wrong) and most keirin frames seem to be coming into the u.s. with hatt bbs
While I have never owned the ellipse wheels three friends have... one used a TA crank, on is still using a FSA carbon pro, and one had his set up with dura ace. Nobody had a problem with any set up.
The chainline issue is overrated in this case.
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