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Sugino octalink chainset help!

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Sugino octalink chainset help!

Old 11-30-12, 10:53 AM
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tomhdurham
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Sugino octalink chainset help!

Hello, I've just bought a sugino alpina octalink chainset from here; https://www.chainreactioncycles.com/M...?ModelID=87258 along with a shimano 105 5500 bottom bracket. beautiful chainset, all good. HOWEVER the crank arms do not fit onto the spindles on the bb-i was told that this bb and these cranks were compatible. Its not the mtb octalink bb, it definitely the road version [v1]. Anyone experience this with this chainset? Any advice on an alternative bb? or is it refund time?
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Old 11-30-12, 11:25 AM
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Are you sure it's really an Octalink crank? I believe that's a mistake.

I did a search on Suguino cranks and all the models I found use a square taper (most JIS but afew ISO) bottom bracket, not any form of splined. In fact, I did find a source specifically that sells the Alpina and it clearly says it takes a 110 mm square taper bottom bracket. Look here:

https://www.benscycle.net/index.php?m...fea5c5abaca83f

I'd contact Chain Reaction and tell them your problem. It's highly possible their ad is incorrect.

Last edited by HillRider; 11-30-12 at 11:30 AM.
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Old 11-30-12, 11:57 AM
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Sugino does make some cranks that look like Octalink: https://www.suginoltd.co.jp/english/product_english.htm

You should see if you can return the bottom bracket for the Sugino one that is guaranteed to work.
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Old 11-30-12, 01:07 PM
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its definitely octalink. here is a pic of the crank in question https://www.alexscycle.com/cranks/roa...-octalink.html I've scoured the internet but there seems to be very little info out there. I have contacted chain reactions tech department though, so fingers crossed
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Old 11-30-12, 01:54 PM
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For a reason that escapes me, the BB-5500 octalink comes in two flavors of V1. Some have the longer splines of V2 with a spacer and some come with the shorter splines normally associated with V1. I'm curious by how it does not fit. Can you show a photo?

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Old 11-30-12, 02:11 PM
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Does it not fit at all or is it close? It's common for non-Shimano octalink cranks to be very tight, even some Shimano cranks on first install do not want to seat all the way.

If it goes on the spindle but not the splines it probably just needs to be pressed on. If all the splines line up just grease the hell out of it and carefully install, sometimes backing the crank off and reinstalling several times is what it takes.
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Old 11-30-12, 02:25 PM
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it goes on the spindle, but not the splines-it would be an unbelievably tight if they are indeed compatible. I don't want to force anything or ruin the cranks
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Old 11-30-12, 03:48 PM
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Do the splines on the spindle match the grooves in the crank in number and width? An Octalink has 8 splines (hence the name) and the BB-6500 I measured has splines 0.09" (2.3 mm) wide and .19" (4.8 mm) long. Check if your crank has grooves the match these dimensions.

I've never seen two different spline lengths on BB-5500 bottom brackets but I guess thay may have been made that way. The one I have in service is identical to the BB-6500 I mentioned above.
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Old 11-30-12, 03:49 PM
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It's a very common octa-link problem, like I said even with proper Shimano cranks. After you get them fully installed and bottomed out they will be much easier to install and remove in the future.

I ran across this very recently with a set of Cannondale/CODA octa-link cranks. Took maybe five minutes, installed and removed them twice, they are perfect now. No experience with the Sugino cranks personally but I would go ahead and attempt to install them, with LOTS of grease mind you...
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Old 11-30-12, 07:34 PM
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Originally Posted by tomhdurham View Post
it goes on the spindle, but not the splines-it would be an unbelievably tight if they are indeed compatible. I don't want to force anything or ruin the cranks
With Octalink V1, the splines are short, so the bb/crank splines don't engage by hand, the crankbolt pushes the crank on, engaging the splines. In other words, you won't be able to push the cranks onto the splines by hand, you make sure everything is lined up by hand, but you use the crank bolt to push the splined portion of the crank onto the spindle. As someone else has said, grease the splines.....and make sure the splines are lined up correctly.
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Old 12-01-12, 09:53 AM
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thanks for the help chaps, i'm off to get the grease.......
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Old 12-02-12, 08:52 AM
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There are two octalink standards. One is for the road bike and another for the mountain bike cranks and neer the twaine should meet.
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Old 12-02-12, 09:00 AM
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Originally Posted by davidad View Post
There are two octalink standards.
V1 and V2.
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Old 12-02-12, 09:15 AM
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Originally Posted by tomhdurham View Post
thanks for the help chaps, i'm off to get the grease.......
Any update? Was very curious about this situation.
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Old 12-04-12, 03:55 AM
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Indeed! Having just dealt with a spate of BB annoyances (and being an admirer of the Alpina) I'd very much like to hear how things turned out.
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Old 12-04-12, 04:46 PM
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still waiting on the chain reaction tech guy-he seemed to think i should use the v2 bb. I have an old v2 from an old mtb that I tried out of curiosity, the splines are waaaayyyyyy too big. Perplexing.
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Old 12-04-12, 04:49 PM
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Originally Posted by tomhdurham View Post
still waiting on the chain reaction tech guy-he seemed to think i should use the v2 bb. I have an old v2 from an old mtb that I tried out of curiosity, the splines are waaaayyyyyy too big. Perplexing.
I've not seen one of those cranks in person, but the specs I've seen for that crankset say it's V1 Octalink. Maybe there's more than one version of that crankset, I don't know. There are exceptions, but V1 is generally for road cranks (the exception being XTR, which uses Octalink V1).
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Old 12-10-12, 09:22 AM
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got this sorted today-the alpina cranks DO use the V1 bb, but they are a VERY tight fit, I had to get a torque wrench set to 50nm to get them on all the way. Worth it though, they are light as a feather and look very cool
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Old 12-10-12, 01:47 PM
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Originally Posted by davidad View Post
There are two octalink standards. One is for the road bike and another for the mountain bike cranks and neer the twaine should meet.
I remeber for a while some of the V2 BB came with a spacer that allowed you to use it with V1 cranks.
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