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Sugino AS cranks - any info?

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Sugino AS cranks - any info?

Old 06-08-15, 08:31 AM
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garlic_rice
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Sugino AS cranks - any info?

(There was a thread on this dated 2005 but it never really got answered and I'm not trying to resurrect a 10-year-old thread)

So I recently got a pair of these Sugino cranks I'd never heard of (they were thrown in with a wheelset). Initial Googling shows that there was indeed a Sugino AS road double crankset in the 80's, with 144mm BCD. Cool.



But when I installed the cranks, I noticed that the edges of the spider arms (where the chainring sits) don't have space for an inner chainring to fit.





Could there have possibly been a track version of the AS cranks? I mean, there are road versions of Aero Mighty and 75, so it's not that farfetched (except AS wasn't 75/Mighty level). Anyone here know anything about these? I'm keeping them no matter what, I was just curious because I've never seen these before.

Last edited by garlic_rice; 06-08-15 at 08:32 AM. Reason: oops grammar
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Old 06-08-15, 09:18 AM
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Nice looking crank. Maybe Tejano Trackie will know something.
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Old 06-08-15, 10:25 AM
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I should also mention that googling "Sugino AS" is a fruitless search.
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Old 06-08-15, 10:46 AM
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Originally Posted by 50voltphantom View Post
Nice looking crank. Maybe Tejano Trackie will know something.
Nope, IDK anything about these cranks. The old road cranks with a 144mm BCD that I have are the Sugino Mighty from the 1970's which were copies of the old Campy Nuovo Record and look like the IRD Defiant cranks. Sugino also made a Track version w/o an inner shoulder that mimicked the Campy Record Pista. The cranks in this thread are apparently much newer and are definitely track.
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Old 06-08-15, 11:05 AM
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Did you try googling Sugino A5?
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Old 06-08-15, 12:12 PM
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Originally Posted by T13 View Post
Did you try googling Sugino A5?
Haha that's the first thing I did because it does look like a 5, doesn't it. I got a bunch of early Sugino BMX stuff.
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Old 06-08-15, 12:15 PM
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Yeah seems like here are more googles on A5 than there are AS...
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Old 06-08-15, 01:11 PM
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It looks a lot like the Sugino AT, which is a triple crank.

And here I found a photo of the AS with two chainrings
http://web.fc2.com/jump/?url=http://...gino82_02l.jpg

Last edited by hairnet; 06-08-15 at 01:16 PM.
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Old 06-08-15, 01:24 PM
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Originally Posted by garlic_rice View Post
(There was a thread on this dated 2005 but it never really got answered and I'm not trying to resurrect a 10-year-old thread)

So I recently got a pair of these Sugino cranks I'd never heard of (they were thrown in with a wheelset). Initial Googling shows that there was indeed a Sugino AS road double crankset in the 80's, with 144mm BCD. Cool.



But when I installed the cranks, I noticed that the edges of the spider arms (where the chainring sits) don't have space for an inner chainring to fit.



Could there have possibly been a track version of the AS cranks? I mean, there are road versions of Aero Mighty and 75, so it's not that farfetched (except AS wasn't 75/Mighty level). Anyone here know anything about these? I'm keeping them no matter what, I was just curious because I've never seen these before.
More likely someone ground off the inner ledge to make a pretend track crank. More catalog info on the AS here: Sugino brochures early to mid 1980's

Nice cranks, BTW. I'm using a GLP on my fixed-gear.
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Old 06-08-15, 01:38 PM
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Originally Posted by ThermionicScott View Post
More likely someone ground off the inner ledge to make a pretend track crank. More catalog info on the AS here: Sugino brochures early to mid 1980's
I think you are correct. Looking more closely at the photos, you can just make out a small bit of the ledge that wasn't completely ground off. What threw me off was the recessed chainring nut, which you normally only see on a true track crankarm spider, so whoever ground off the ledge must also have counterbored the spider for the chainring nut.
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Old 06-08-15, 02:17 PM
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Thanks guys for all your input!

Re: grinding off the inner ledge - was that common practice back then? Seems like a lot of work for something that no one would really notice. Oh well.

The plot thickens: I did come across an eBay listing for the same cranks listed as track cranks pulled off a Centurion track bike.


Of course, the Centurion Trac happens to be a pretty rare bird in itself and it's just as hard to find info on what that bike came built with. So i think i've spent as much time as I could getting to the bottom of this. Now to figure out what's for dinner. Thanks again y'all.
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Old 06-08-15, 02:27 PM
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There was a guy in that old BF/SS/FG thread, which you hinted at, who stated his AS cranks had ledges for the 2nd ring. In retrospec(?) The best part was when this forums favorite guy...Scrodzilla posted a snarky vid in it

But getting back to now - there is that obvious telltale small ridge...
So much work to have put into a crank that for the most part didn't seem to have had any historical impact?

Dood...do the cranks fit? Can you make them work for your purposes? What the hell else matters?

Good luck & hope you enjoy yours...

Last edited by IAmSam; 06-08-15 at 02:49 PM.
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Old 06-08-15, 02:29 PM
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Bet it's the same crank.
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Old 06-08-15, 02:35 PM
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Actually, grinding of the ledges may have been necessary to clear the chainstay with a shorter BB spindle to provide a good chainline with a single chainring on the outside of the crankarm spider. That's what I had to do with my Sugino Mighty when I mounted it on my Soma Rush.
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Old 06-08-15, 03:07 PM
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^I like that theory.
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Old 06-08-15, 03:52 PM
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Originally Posted by TejanoTrackie View Post
Actually, grinding of the ledges may have been necessary to clear the chainstay with a shorter BB spindle to provide a good chainline with a single chainring on the outside of the crankarm spider. That's what I had to do with my Sugino Mighty when I mounted it on my Soma Rush.
A few years ago I considered doing the same to my 144bcd road crank because I wanted a shorter BB for fixed gear. Decided to keep the crank whole.
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Old 06-08-15, 08:36 PM
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i've bought a couple 'claimed-to-be-track' cranks that were ground off. all 144bcd, one was Ofmega the other don't remember.
while it's not terribly common, guess it can be seen from time to times.
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Old 06-09-15, 08:52 AM
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Originally Posted by TejanoTrackie View Post
Actually, grinding of the ledges may have been necessary to clear the chainstay with a shorter BB spindle to provide a good chainline with a single chainring on the outside of the crankarm spider. That's what I had to do with my Sugino Mighty when I mounted it on my Soma Rush.
Sounds good. I'll take that! I knew there had to be an answer that was more function over form.


Originally Posted by IAmSam View Post
There was a guy in that old BF/SS/FG thread, which you hinted at, who stated his AS cranks had ledges for the 2nd ring. In retrospec(?) The best part was when this forums favorite guy...Scrodzilla posted a snarky vid in it


But getting back to now - there is that obvious telltale small ridge...
So much work to have put into a crank that for the most part didn't seem to have had any historical impact?


Dood...do the cranks fit? Can you make them work for your purposes? What the hell else matters?


Good luck & hope you enjoy yours...
I like how that thread had already been zombied almost 8 years later. The cranks fit (165) and I will indeed make them work, so nothing else matters. I was just a little curious because I'd never heard of the AS line, or like you said, doing so much work for a part that didn't have the 'premium status' of SG75, SSP, C-Record, etc. But I definitely plan on using them


Originally Posted by prooftheory View Post
Bet it's the same crank.
I kinda really want that to happen.
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Old 01-28-17, 07:55 AM
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I've got them

I've got the same cranks dude! Those for track
Glad to see this thread

Cus i was wondering if i was the only one to have a set of those cranks, haha!
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