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Old 02-23-14, 05:13 PM   #1
Ex Pres
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Suntour Cassette Freewheel - Huh?

Alright, maybe I've just missed it, but I didn't see on of these on Velobase, either.
I'll never tell someone again that they don't have a cassette freewheel.
Now for the visuals:

Says freewheel on it.


And when you remove the cogs, you find a stepped body, sort of like a freewheel.


And the cogs are all loose with spacers, just like a cassette.

And there may be a better tool, but the Shimano-style BB tool works for the lockring.

But Suntour insists this is a freewheel, and Suntour cassettes I've seen have a traditional look freehub body.


So what would you call it?
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Old 02-23-14, 05:38 PM   #2
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Unusual. That's what I'd call it.
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Old 02-23-14, 05:42 PM   #3
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Close but no cigar!
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Old 02-23-14, 06:48 PM   #4
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I suppose when you invent stuff, you can call it by the name of stuff it's sort of like.
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Old 02-23-14, 07:13 PM   #5
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Suntour or Sunrace? Do any FW tools fit on the inside of the body? or are those spline looking things to rounded?
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Old 02-23-14, 07:49 PM   #6
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Originally Posted by Bianchigirll View Post
Suntour or Sunrace? Do any FW tools fit on the inside of the body? or are those spline looking things to rounded?

Of course the Shimano freewheel tool fits this freewheel just like any other, normal Sunrace freewheel.

What is un-freewheel-like about this freewheel, other than the fact that it has had it's cogs removed with the freewheel body left on the hub?

A lot of freewheels, actually almost all these days, have a proprietary lockring as shown that is generally a pain to remove.
Of course no one supplies tools for these lockrings, because why would anyone want to take one of today's cheap freewheels apart?

Ok, well, I've taken Sunrace and Shimano lock-ringed freewheels apart, even swapped cogs between them, but there is rather little reason to do so on HG-style freewheels with precisely-arranged sets of sprockets. But I'll cop to putting a 30t UG cog on a Sunrace 13-28t freewheel, and I could also see someone wanting to put an un-painted large cog on one of Shimano's otherwise excellent 13-28t freewheels.

Does this freewheel actually say Suntour on it? I couldn't see.
But what a surprise that a Shimano BB tool fits the splines in the lockring!

Last edited by dddd; 02-23-14 at 07:53 PM.
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Old 02-23-14, 07:50 PM   #7
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It's a freewheel, the remover tool goes in that inner ring. I've confused those before because of the large lockring.
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Old 02-23-14, 09:38 PM   #8
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Well dddd & wes, I guess I just haven't paid any attention to modern freewheels - didn't know they had lockrings these days.
That's why I post - to learn things.


Follow-up: don't try using a BBT5 remover to remove the body. It has 12 splines but a 22.8mm D. The correct remover is 12s + 23mm D. That 0.2mm bungled my remover.

Last edited by Ex Pres; 02-24-14 at 10:23 AM.
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Old 02-24-14, 12:10 AM   #9
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I don't know what it is, all I know is that I want one.
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Old 02-24-14, 02:26 AM   #10
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Originally Posted by Ex Pres View Post
Well dddd & wes, I guess I just haven't paid any attention to modern freewheels - didn't know they had lockrings these days.
That's why I post - to learn things.
See Sheldons explanation of modern lockring freewheels ; http://sheldonbrown.com/mega7/
Bottom line is that hyperglide cogs need splines (not threads) for alignment but you cannot do a splined cog smaller than 13t unless a separate lockring is used.
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Old 02-24-14, 02:43 AM   #11
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Woah.... dude!
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Old 02-24-14, 11:26 AM   #12
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+1 on it being a freewheel. I can make out TAIWAN, possibly a Sunrace?
The original Suntour cassettes used a system similar to Uniglide...threaded last cog.

But their freehub body was removed via a 10-12mm hollow bolt from the NDS of the hub shell.
IMO, a superior improvement over the Shimano design, and a clever way to get around their patent. It's easier to manufacture, and yields a stronger rear hub.
This set up is still in use today by Joytech and Formula.
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Old 02-24-14, 09:34 PM   #13
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Quote:
Originally Posted by Ex Pres View Post
The correct remover is 12s + 23mm D. That 0.2mm bungled my remover.
Is the English language changing again... dammit, I hate when that happens! http://en.wiktionary.org/wiki/bungle
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