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Old 09-26-09, 12:20 AM   #1
SSSTANG
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Freewheel compatability

My bike has an SIS 6 speed drivetrain with a 14-28 http://www.sjscycles.co.uk/product-S...4-28-17874.htm I want to change the gearing. Will any shimano/suntour freewheel work as a suitable replacement? This is what I'm thinking about, http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWAX:IT or this http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWAX:IT. Will these freewheels fit and shift normally?

Thanks!
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Old 09-26-09, 12:56 AM   #2
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Standard 6s freewheels, all have the same spacing so there's no problem making the switch. (There is also a narrower 6s freewheel that uses 7s spacing to fit 6s onto hubs made for 5s. I tell you so you can avoid one of these if you find one).

Depending on the age of your chain, you should replace it at the same time. Running an old chain on a new freewheel will rapidly age the freewheel to the same relative age as the chain.
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Old 09-26-09, 01:45 AM   #3
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It'll fit, but you have several problems. The FW's listed are all 'used' and there's no way to tell how worn they are and the cogs appear to be non-index (not ramped) compatible...so shifting may be dodgy even if you use friction shifters. Then you need to buy the FW removal tool(s).

Better to buy one of IRD Defiant Freewheels. They're new and the gearing choices is similar to the ones you are interested in. IRD uses the Park Tool FR-1 removal tool. Suntour offers a 14-19 FW:
http://www.sheldonbrown.com/harris/freewheels.html
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Old 09-26-09, 02:06 PM   #4
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FBinNY, The reason I'm considering changing the freewheel is because I put a new SRAM chain on and it skips. I thought since I was changing the freewheel I would try different gearing. How do I differentiate between a standard 6s and a narrow 6s?

Sci-Fi, I was only using those as examples. I will be buying a new freewheel. Can you explain what I should look for so I would know that a freewheel is index compatible?

Thanks
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Old 09-26-09, 02:12 PM   #5
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The IRD Defiant Freewheels do look nice.
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Old 09-26-09, 02:16 PM   #6
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Can you explain what I should look for so I would know that a freewheel is index compatible?
Get a Shimano HyperGlide 6-speed freewheel. It will work much better than any other 6-speed freewheel.

You can no longer get new Shimano Uniglide or Suntour freewheels unless you can find them new-old-stock (NOS). I don't even know if Sachs still makes new 6-speed freewheels but years ago my brother bought a new 13-21 Sachs 6-speed for his Shimano equipped bike. Sunrace may still make some but they aren't as good as the Shimanos.

The narrow 6 was made by Suntour and called "Ultra-6". You cannot get new ones anymore.

edit: just saw those IRD Defiants - with their shifting ramps and profiled teeth, they should work as well as a Shimano HG and you can get something other than 14-28 or 14-34

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Old 09-26-09, 02:54 PM   #7
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http://www.loosescrews.com/index.cgi...id=15816715181
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Old 09-26-09, 03:52 PM   #8
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Sci-Fi, I was only using those as examples. I will be buying a new freewheel. Can you explain what I should look for so I would know that a freewheel is index compatible?

Thanks
You can tell by just looking at the cogs. The indexed cogs will be 'ramped'/beveled while the non-indexed cogs are straight cut. The item description 'should' be specific too. Usually see non-indexed FW's offered in Europe but almost non-existent stateside. Can see what I'm referring to by looking at the pictures of non and indexed FW's here:
http://www.sjscycles.co.uk/category-...6-Speed-78.htm

Lot of inexpensive 6-speed FW's if you look around. Bikeman has this Shimano 14-34 for $14.00 USD:
http://www.bikeman.com/FW8110.html
Loosescrews can custom build one:
http://www.loosescrews.com/Products/LS-CFW613.html
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Old 09-26-09, 04:23 PM   #9
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The narrow 6 was made by Suntour and called "Ultra-6". You cannot get new ones anymore.
Yellow Jersey claims to still have some Ultra-6 freewheels:
http://www.yellowjersey.org/stfw.html
(Holy Cats, who does their web pages? )

but just about anything made since the early '90's will be compatible with "standard" 6-speed spacing. Those Regina freewheels on the SJS site are NOS from the '80's- I remember them and the neat tin cans they came in.
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Old 09-26-09, 04:33 PM   #10
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Don't worry about the difference between Uniglide twist tooth versus Hyperglide ramped-side cogs. There are differences in performance, such as being able to make a shift while stationary with Hyperglide (it'll pick up the chain better when you start moving again). But functionally there's minimal difference between Uniglide vs. Hyperglide; they'll both index just fine with 6-spd shifters.
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Old 09-27-09, 12:42 AM   #11
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You can tell by just looking at the cogs. The indexed cogs will be 'ramped'/beveled while the non-indexed cogs are straight cut.
Got it, thanks.
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Old 09-27-09, 11:12 AM   #12
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The IRD Defiant Freewheels do look nice.
Nice to see somebody, somewhere is stepping up to the plate and keeping "obsolete" technology alive. American-made and not outrageously priced. I've seen alot of old Peugeots and Raleighs that would benefit from these clusters.

Last edited by bikemeister; 09-27-09 at 11:16 AM. Reason: text
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Old 09-27-09, 05:40 PM   #13
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Nice to see somebody, somewhere is stepping up to the plate and keeping "obsolete" technology alive. American-made and not outrageously priced. I've seen alot of old Peugeots and Raleighs that would benefit from these clusters.
Obsolete technology is obsolete for a reason.
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Old 09-27-09, 05:45 PM   #14
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Obsolete technology is obsolete for a reason.
Obsolete only in obsolete minds


Freewheels and cassettes both do what they are supposed to do. I like freewheels so much I'm getting a new pair built up with Phil touring hubs.
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Old 09-27-09, 05:50 PM   #15
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Obsolete only in obsolete minds


Freewheels and cassettes both do what they are supposed to do. I like freewheels so much I'm getting a new pair built up with Phil touring hubs.
That's unfortunate. Could you please link a 9, 10 or 11 speed freewheel please?
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Old 09-27-09, 06:01 PM   #16
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That's unfortunate. Could you please link a 9, 10 or 11 speed freewheel please?
Not everyone wants or needs 8,9,10 or 11 speed clusters. Don't you get that yet!

But hey ... there are 9 speed freewheels if someone needs one . http://www.amazon.com/SunRace-9-Spee.../dp/B002MUIUXU
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Old 09-27-09, 06:05 PM   #17
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Not everyone wants or needs
The mantra of obsoleteness.
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Old 09-27-09, 06:09 PM   #18
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Obsolete only exists between the ears.
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Old 09-27-09, 08:20 PM   #19
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Obsolete in the american automotive industry means "we don't make it any more because we found a cheaper design ". Sometimes the design is an improvement but most of the time it is for money savings.
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Old 09-27-09, 11:52 PM   #20
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Obsolete only exists between the ears.
Oh please.

You're one of a very few vocal minority who thinks having to buy a phil wood hub to justify using retardely deprecated technology is a good thing. There is absolutely no advantage to using a freewheel on a modern road bike whatsoever. Do us a favour and stop posting completely backwards stone age thinking
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Old 09-28-09, 09:43 AM   #21
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Oh please.

You're one of a very few vocal minority who thinks having to buy a phil wood hub to justify using retardely deprecated technology is a good thing. There is absolutely no advantage to using a freewheel on a modern road bike whatsoever. Do us a favour and stop posting completely backwards stone age thinking

Stone age thinking? Hmmm ......when was the stone age again ? I didn't know they rode bikes back then. Let see ..... Freewheels and hubs are still made today ...... I can't say that for anything form the stone age.

I agree, there is no advantage for using a freewheel on a modern bike whatsoever . . . . for you. Speak for yourself Operator.

As long as you disparage people for using freewheels ..... I'll be here to shovel it back at 'ya. You think you can get away with it because it's an internet forum ..... what's the worst that can happen to you ..... ban you? You've already been banned how many times? ..... yet BF always lets you back. No wonder your comments are so rude.

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Old 09-28-09, 09:51 AM   #22
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Whoa...calm down people. Freewheels are still common (mainly 7-speed) on entry level bikes, so it's not a vintage or 'X-Box' only thing. Cyclists at this forum probably wouldn't buy or own a FW bike, but those that do may want to try a different cog/ratio cluster setup for the conditions they ride in and having 'options' other than 14-34 is nice. Would blame the bike companies for not using more modern components for their entry level or low priced models, but even 7-8 speed cassettes are becoming scarce or have limited upgrade options and 9-speed cassettes may be next on the endangered list.
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Old 09-28-09, 10:21 AM   #23
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I agree, there is no advantage for using a freewheel on a modern bike whatsoever . . . . for you. Speak for yourself Operator.
I'm honestly curious. What advantage do you personally get with a freewheel over a cassette?
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Old 09-28-09, 10:45 AM   #24
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I'm honestly curious. What advantage do you personally get with a freewheel over a cassette?
He must sell rear axles
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Old 09-28-09, 11:13 AM   #25
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Freewheels are still made sot hat people with VINTAGE bikes can keep them VINTAGE. Really, no reason to fight over it. Its so simple you all get angry.

I have one bike with a freewheel, an old Schwinn MTB 10 speed...beater bike. If the freewheel locks up or something I will buy a new one for it. Im not gonna pour $300 into converting a $30 bike to 9 speed.

Those IRD Freewheels look great! Would be perfect for a nice vintage bike, of any flavor.

8 speed cassettes hard to find? NO WAY! I see them everywhere online, from low end to higher end, Mostly SRAM though (which I like better).

So, lets try to all get along, and quit acting like 2nd graders when somone took a crayon.
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