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Suntour Superbe Pro crank specs - bb

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Suntour Superbe Pro crank specs - bb

Old 01-06-16, 12:59 PM
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msl109 
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Suntour Superbe Pro crank specs - bb

Getting conflicting info on Superbe Pro crank bottom bracket spindle length - 112? 109? were there variations in the last run of these? I believe mine is the very last model made. I'm NOT talking about the S R suntour (post acquisition) model.
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Old 01-06-16, 01:56 PM
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Originally Posted by msl109 View Post
Getting conflicting info on Superbe Pro crank bottom bracket spindle length - 112? 109? were there variations in the last run of these? I believe mine is the very last model made. I'm NOT talking about the S R suntour (post acquisition) model.
I'm glad you mentioned the SR Suntour one- As much as that company has ignored most everything in Suntour's past- they made THOSE cranks and THAT particular logo really close to the originals.

Do your cranks have the 2 digit date on them?
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Old 01-06-16, 02:03 PM
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Is this the road or the track Superbe Pro crankset?
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Old 01-06-16, 02:16 PM
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I don't know, but I speculate the 109 is a track spindle and the 112 is a road spindle.
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Old 01-06-16, 02:55 PM
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The most modern SunTour catalogue that I have that actually specifies the Superbe Pro spindle length is 1987. It is a 109mm, symmetrical spindle. Later catalogues do not specify spindle length but the same part number is used through 1990 (i.e BB-SB10, with varying suffices, depending on the threading). However, in 1991 the spindle changes to a BB-SB11.
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Old 01-06-16, 03:07 PM
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I recall 109mm spindle for the 1980's Superbe Pro road bb. I believe it was ISO and not JIS though, which might argue for use of a 103mm JIS bb (among modern available choices) to arrive at a good chainline with adequate clearances. I would certainly do a test-fit with the 103 first, perhaps adding a 1mm cup spacer only if needed.
Note that the ISO taper effectively shortens each end of the spindle by about 2.5mm vs. JIS, so the 103mm JIS spindle fits like it is 108mm long.
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Old 01-06-16, 03:40 PM
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Road - double chainwheel.
Originally Posted by icepick_trotsky View Post
Is this the road or the track Superbe Pro crankset?
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Old 01-06-16, 03:44 PM
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Not sure what the model number difference (sb10vs11)might refer to. Going to see if Ican't figure the year from date codes. Can't open your attachment - getting told I don't have permission.
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Old 01-06-16, 03:47 PM
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That probably would work, but I'd prefer to try to get an iso spindle first. Caught a thread discussing these cranks and apparently the ANGLE of the taper was 1.8 instead of 2 degrees. Figure I'd try and keep it Suntour Iso if I can to stay as close as possible.
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Old 01-06-16, 03:50 PM
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Looks like it's an '84-85 I've got, if that helps.
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Old 01-06-16, 04:00 PM
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once i've had an Italian Suntour Superbe Pro BB, the spindle was 112mm IIRC.
btw. do we see Sir @T-Mar back? (or am i late in the news?) welcome back sir, happy new year! #hallelujah
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Old 01-06-16, 05:49 PM
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I replaced the BB on my '85 Schwinn Peloton with this model (1985 Superbe Pro Crank stock on this model). I think it the 111 gave the correct chainline, but it might have been a 109 - I don't remember. At any rate, this is the correct taper. I'd bring your spindle in to a shop and compare where the chain side ends up.



Sku: 21253
68mm ENG SQR ISO-CMPY 111mm Alloy 220-240g
Product Description | Origin8

Edit: They don't make a 109, so 111 is probably what I ended up using.
Edit 2: I have the old stock spindle and will check the length if that's what you need. Let me know.

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Old 01-06-16, 07:05 PM
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Had the same problem with a Superbe crankset I purchased on eBay. There are several different spindle lengths specified across the Internet.

I did mine the hard way. I mocked up an install with an old BB and measured how much length I needed to add/subtract to get the right chainline. My mildly precise technique concluded a 111mm being the right size for my set. Bought a cheap FSA sealed unit that measured 110.5mm and everything aligns great.

Good luck!
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Old 01-06-16, 08:11 PM
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Sutherland's says 109, Campy taper.
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Old 01-06-16, 10:20 PM
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Originally Posted by msl109 View Post
That probably would work, but I'd prefer to try to get an iso spindle first. Caught a thread discussing these cranks and apparently the ANGLE of the taper was 1.8 instead of 2 degrees. Figure I'd try and keep it Suntour Iso if I can to stay as close as possible.
Superbe and Sprint cranksets were made by Sugino, and used a very precise ISO specification spindle, just as all of Campagnolo's cartridge bb's do.

ISO and JIS tapers have identical angles. The taper starts a little smaller with an ISO taper than a JIS taper, which accounts for the 2.5mm difference in the depth of the pressfit into a crankarm of any given taper. Different tapers also have different lengths before flaring out to meet the round diameter of the spindle, but which has by itself never prevented me from interchanging them and accepting the difference in engagement depth (BTW this issue would never come up when using a JIS spindle).

Also BTW, I seem to recall that the very 1st 130bcd version of the Superbe crankset used a longer spindle length, 114 ISO or equivalent to Campagnolo Record of the day.

Re: jiangshi , Sutherlands is correct (109mm) for the 130bcd version at least, and the OP's cranks are most definitely 130bcd.
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