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how to take apart suntour new winner freewheel?

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how to take apart suntour new winner freewheel?

Old 12-24-13, 02:48 PM
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how to take apart suntour new winner freewheel?

I have a 5 speed Suntour New Winner freewheel, but I don't like the spacing of the gears. I came across an Ultra 6 and a 7 speed freewheel at the local bike coop, and I would like to scavenge the cogs for my 5 speed freewheel. I tried using 2 chain whips (on the Ultra 6) to remove the smallest cog, but it wouldn't budge. I also tried the 3rd cog on the 7 speed, that wouldn't budge either.

Has anyone taken apart one of these freewheels? If you have a link to a video, that would be great…The guys at the bike coop were stumped too (but they would usually just swap to a different freewheel).


Thanks in advance!
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Old 12-24-13, 03:03 PM
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I've never taken apart a 5 speed but I have taken apart 6 & 7 speed Suntours. It will be much easier if you get a Suntour freewheel vise but the 5 speed cogs may not be interchangeable with the 6 & 7 speed cogs.

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Old 12-24-13, 03:04 PM
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Give this a try. I recall there is some specific info related to Suntour freewheels on Sheldon's site but I can never find things very easily.

https://sheldonbrown.com/freewheels.html
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Old 12-24-13, 03:13 PM
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Give this a try. I recall there is some specific info related to Suntour freewheels on Sheldon's site but I can never find things very easily.

https://sheldonbrown.com/freewheels.html
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Old 12-24-13, 03:13 PM
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I found more info:

https://sheldonbrown.com/suntour.html
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Old 12-24-13, 03:27 PM
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Paging Pastor Bob…..
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Old 12-24-13, 03:33 PM
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I do not believe that any of the individual cogs of the 5 speed freewheel will work on an Ultra 6 or 7. I believe that the individual cogs are thinner and the spacers are totally different in thickness. I remember having a full Suntour freewheel board at my past bike shop and the spacers were very specific for each of the 6 or 7 gears.
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Old 12-24-13, 03:52 PM
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N/M JDT scanned the Sutherlands chart in n.13


FWIW, Ive got a bag of NW Pro Freewheels in parts to resell ..(PM)

might get a camera with the proceeds.

Anno I dont have a website [im just an old mechanic with a hammer or 2]

Last edited by fietsbob; 12-25-13 at 10:23 AM.
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Old 12-24-13, 05:17 PM
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Originally Posted by fietsbob
the largest cogs spline on. like wise but a different diameter, the middle ones

last few screw on to keep them fixed.

for 7 the 6th is double threaded ..




FWIW, Ive got a bag of NW Pro Freewheels in parts to resell
Hi, can you post a link? Failing to find your items in a reasonable time :-)
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Old 12-24-13, 06:29 PM
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Originally Posted by deepinahartatx
Has anyone taken apart one of these freewheels?
Thanks in advance!
It really depends how tight they are. Leaving it on the wheel and using two chain whips sometimes gets them apart... If no-go, the tool shown in post #2 , holding the largest cog and clamped in a bench vise, might work with one chain whip on the smallest cog. If that doesn't work, I leave it alone because any greater effort might break something. I like the Park Tools chain whip, it's a lot sturdier.
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Old 12-24-13, 06:51 PM
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It's not that hard if you have the right tools. I've done it with a Cobra D007 Sprocket Remover in a vise and then a slim chain wip and a steel pipe around the chain wip for leverage, about 1 m long. It was impossible without the cheater pipe.

Cobra D007 Sprocket Remover
https://www.framebuilding.com/clearan...0of%20line.htm

But I guess the Suntour freewheel vise is even better.
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Old 12-24-13, 07:08 PM
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I have a homemade vise. Take a small piece of a 2X4 and put the freewheel on it. Then use wood screws between the large cog teeth to hold it in place on the 2X4. I then clamp the 2X4 into a bench vise. I then take one chain whip and wrap it around the smallest cog. I take a rubber mallet and tap the chain whip handle. This has never failed me.

This thread shows a pic of a similar homemade vise. https://forums.mtbr.com/singlespeed/h...de-373319.html
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Old 12-24-13, 07:29 PM
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Originally Posted by jacksbike
I do not believe that any of the individual cogs of the 5 speed freewheel will work on an Ultra 6 or 7. I believe that the individual cogs are thinner and the spacers are totally different in thickness. I remember having a full Suntour freewheel board at my past bike shop and the spacers were very specific for each of the 6 or 7 gears.
Yes, there are many differences between the NW bodies and the Ultra bodies. Perhaps this will help (or maybe it will just intimidate you ):





Source: Sutherland's 4th Edition
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Old 12-24-13, 07:33 PM
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Originally Posted by mparker326
I have a homemade vise. Take a small piece of a 2X4 and put the freewheel on it. Then use wood screws between the large cog teeth to hold it in place on the 2X4. I then clamp the 2X4 into a bench vise. I then take one chain whip and wrap it around the smallest cog. I take a rubber mallet and tap the chain whip handle. This has never failed me.

This thread shows a pic of a similar homemade vise. https://forums.mtbr.com/singlespeed/h...de-373319.html
Excellent idea. Just go easy with the mallet so you don't brake any teeth. I would reccomend more leverage and squeeze off the smallest cog.
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Old 12-24-13, 09:36 PM
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Man, this is way more work than I thought, I was under the impression that the cogs were interchangeable between the various new winners (5/ultra6/7), but I guess not….

Thanks for all the info, guess I'll try and find something that is closer to what I want...
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Old 12-24-13, 11:11 PM
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I am having a similar issue right now. I have a barely used New Winner 5 speed freewheel, it has play unluckily, I don't want to wreck it taking it apart to remove the "shim" everyone keeps telling me about. Ugh. Good luck my friend.
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Old 12-25-13, 12:07 AM
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Originally Posted by JohnDThompson
Yes, there are many differences between the NW bodies and the Ultra bodies. Perhaps this will help (or maybe it will just intimidate you ):
Not intimidated but I am thoroughly confused!
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Old 12-25-13, 12:39 AM
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New Winner was a model. Ultra was a spec for fitting six or seven cogs in the space of five. They made ultra in the perfect/pro compe models and also in the winner/new winner model.
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Old 12-25-13, 09:12 AM
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Originally Posted by rootboy
Paging Pastor Bob…..
Checking in. I was sort of tied up last night with the church. Family is still in bed now.
Originally Posted by Kactus
I've never taken apart a 5 speed but I have taken apart 6 & 7 speed Suntours. It will be much easier if you get a Suntour freewheel vise but the 5 speed cogs may not be interchangeable with the 6 & 7 speed cogs.

This is the tool you need, a heavy duty vice, which is mounted to a tough and well secured work bench.
Originally Posted by jacksbike
I do not believe that any of the individual cogs of the 5 speed freewheel will work on an Ultra 6 or 7. I believe that the individual cogs are thinner and the spacers are totally different in thickness. I remember having a full Suntour freewheel board at my past bike shop and the spacers were very specific for each of the 6 or 7 gears.
With the Winner series of freewheels it can be a crap shoot. Generally speaking the largest 2 or 3 cogs will work in an configuration. The middle and smallest ones can be different depending on the vintage of the freewheel body.
Originally Posted by fietsbob
the largest cogs spline on. like wise but a different diameter, the middle ones

last few screw on to keep them fixed.

for 7 the 6th is double threaded .

FWIW, Ive got a bag of NW Pro Freewheels in parts to resell
Talk to me about your parts.
Originally Posted by deepinahartatx
Man, this is way more work than I thought, I was under the impression that the cogs were interchangeable between the various new winners (5/ultra6/7), but I guess not….

Thanks for all the info, guess I'll try and find something that is closer to what I want...
Yes it is a lot of work, and there have been times when I have broken teeth of Winner cogs or broken my chain whip trying to remove them. There are Winner freewheels I've never been able to service because their cogs or their retaining rings just won't budge.

Email me at pastorbobnlnh@gmail.com and I can help you out if you want to do more. Merry Christmas!
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Old 12-25-13, 10:15 AM
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New Winner was a model. Ultra was a spec for fitting six or seven cogs in the space of five. They made ultra in the perfect/pro compe models and also in the winner/new winner model.
Actually ultra 6 was just the 6 in the space of 5, ... then 7 was in the space of standard 6.
by then there was a bandwagon, to get on, and 7 speed freewheels became part of every freewheel makers lineup.

adding the 8th to the edge of 7 was the overlap with Freehubs .. then in production too..
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Old 12-25-13, 11:30 AM
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Originally Posted by pastorbobnlnh
Yes it is a lot of work, and there have been times when I have broken teeth of Winner cogs or broken my chain whip trying to remove them. There are Winner freewheels I've never been able to service because their cogs or their retaining rings just won't budge.
I had a freewheel with hooked outer sprockets that I wanted to replace, along with overhauling the freewheel body. The outer sprocket was stuck so tight that the teeth began to crack from the forces of trying to remove it. At that point I got out the mini grinder with cutoff wheel, and carefully cut the sprocket from the freewheel body. After that it was a cakewalk.
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Old 12-25-13, 01:11 PM
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Originally Posted by deepinahartatx
Man, this is way more work than I thought, I was under the impression that the cogs were interchangeable between the various new winners (5/ultra6/7), but I guess not….

Thanks for all the info, guess I'll try and find something that is closer to what I want...
Check with Pastor Bob and see if he has what you need... he is a first rate guy to deal with. If he doesn't have one, you can buy a new IRD freewheel here: https://00eda5d.netsolhost.com/freewheel.html
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Old 12-26-13, 08:58 AM
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Just a quick report back: deepinthehartatx and I are emailing to see if I can help him out. We will arrive at a great affordable solution and let you know how it works out.
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Old 12-26-13, 09:14 AM
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I wouldn't take one of these apart unless I was seriously bored. Or…I was Pastor Bob.
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Old 12-26-13, 09:17 AM
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For disassembly of stuck parts, the PARK "Minor Adjustment Tool 8#" is just the ticket......granted, it may not go back together when you are done, but it is great for stress relief!
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