Questions tagged [freewheel]

The freewheel is a ratcheting mechanism, that coupled with a set of gears, is that threaded onto the rear hub of a bike. The freewheel allows the rear wheel to engage and move when the pedals are spun forward, but coast freely when the pedals are stationary or spun backwards.

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3answers
197 views

cogs for front wheel

See this wheel. Can I put two freewheel cogs on it, instead of one freewheel and one fixed? (driving clock and anti clock, so both driving forward) Then get this wheel onto front steel fork, by ...
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1answer
3k views

What do I need to replace my singlespeed freewheel cog?

As I learned in this question, the cog of my freewheel are damaged and should be replaced. I've been searching for some information but I'm still not sure of what I need. At the beginning I though I ...
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2answers
186 views

What model/make are this Freewheel and Freehub?

I am in the process of overhauling my old Motobécane racing bike and I'd like to replace the freewheel, if reasonable. However, there is no indication of who made it (the bike shop couldn't help) and ...
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1answer
111 views

Bearings Cooked? [closed]

I have a Trek mountain bike. It is not new by any means. The back wheel should not freewheel, correct? I am having the back wheel spin freely and I question the bearings.
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2answers
2k views

Changing the rear wheel offset to allow space for freewheel

I've had some new wheels built for a steel frame with a 126mm rear dropout spacing. The rear hub takes a 7 speed screw-on freewheel. At the moment the rim sits perfectly central to the chainstays when ...
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0answers
149 views

Schwinn sidewinder 21 gear slipping?

If rear tire is off the ground, the wheel will spin when pedaled. When wheel is on the ground the pedals will move the chain in any gear but will not move the rear wheel. The chain is not losing ...
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2answers
12k views

Freewheel not working properly

I have an older Trek Mtn bike with Shimano components. Just today the pedal started spinning without turning the wheel. I can pedal forward and backwards and occasionally it will start turning the ...
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2answers
1k views

Help me understand my 8-speed uniglide compatibility issue

I have a Dura Ace 8-speed uniglide rear hub/freewheel marked 'Integrated 8 SIS' and an 8 speed uniglide 14-21T cassette. Two issues - the first being that the smallest cog needs to be a special 32mm ...
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879 views

What can I do to keep my rear derailler in good condition when commuting in the snow?

In the winter, it seems that whatever I do, my rear derailleur stops functioning after few weeks of commuting in light snow. Ice always gets in there somehow, and the chain refuses to move the wheel, ...
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2answers
2k views

Can I add a gear to my Tourney 14-34T freewheel

tl;dr Is there a way to easily add a smaller chainring to a tourney 7 speed 14-34 freewheel without replacing the hub/wheel Details: I have a 13" Fuji Women's Adventure 3.0. I've been shopping for a ...
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2answers
92 views

Easiest fix for this transmission problem? [duplicate]

My bike is an adult mountain bike with different gear shifts and all. Suddenly my rear tire stopped going but the chain and everything still works - the gear and chain still spins. What is the ...
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4answers
14k views

What freewheel mechanism designs are used in bicycles?

What are the various freehub mechanism designs that have been designed and or put into production? (doesn't need to have been made necessarily!) A good post will contain: A description of the design,...
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2answers
5k views

Is it possible to upgrade a 6 speed mountain bike to 7 or 8 speed?

I ride a Hero Sprint, MTB, with 6 gears in rear and 3 in the front. I am thinking about upgrading my 6 gears to something like 7 or 8. Is it possible, if yes, how much does it cost, and what are the ...
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1answer
346 views

What 70's/80's freewheel threading is most common in central or eastern Europe?

Just interested to know? For example, if an 80's steel frame road bike in Europe came with Suzue high flanged hubs (94mm spacing front and 126mm rear), what type of freewheel threading would be ...
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1answer
82 views

Help identifying Freewheel lockring

I've recently acquired a retro steel bike which needs some work. Has anyone ever seen a freewheel with this type of locking system? I haven't been able to find any tool which seems like it would be ...
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1answer
570 views

Can I replace 11 speed 11-40t with a 11-42t or 11-46t staying with Shimano XT family?

Can I replace the 11 speed 11-40t cassette with a 11-42t or 11-46t? What other parts will be needed to complete job? I.e. new chain, long chain, spacers?
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1answer
973 views

Remove Maillard freewheel

I'm trying to open the freewheel from an old bike that I have, but I can't find how. I even searched for tutorials on the Internet but I can't find one that looks like mine (please see picture). And ...
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5answers
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Do silent freewheels exist?

I have only just noticed that my bike dosen't seem to make a lot of noise when free wheeling, in fact it's pretty much silent. Is this down to the fact that I have been putting off a major clean?, is ...
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1answer
855 views

Rear tire wobbling and feels “tight.” Is it likely to be axle issue or no?

I've noticed that my bike's rear tire has slowly been downgrading, and beginning to wobble more and more. I took no notice of it because it did not affect the bike riding at first, but slowly started ...
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0answers
416 views

Freehub stuck on wheel

The freehub doesn't quite roll as smoothly as before. Pedalling back actually turns the wheel back if it's free spinning. So we thought we'd take the body off to clean it and see if anythings broken ...
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1answer
931 views

Campagnolo Zonda Ratchet sound

I bought a Campagnolo Zonda C17 recently and noticed how quiet the ratcheting noise was. My friend owns a pair of Zondas but his one is really loud. why is mine silent? i use a 15 cassette.
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2answers
1k views

Shimano freewheel removal

I am having trouble removing the axle/skewer from the below MF-ZO15 shimano freewheel. It is threaded and secured with bolts rather than quick release and the only way I can see to remove it is using ...
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1answer
675 views

Freewheel in vinegar

I'm renovating an older bike. I took the 6 speed freewheel (Shimano mf-tz20) off because it was rusty, disassembled, chucked the parts in vinegar overnight. The rust came off, but so did the goldish ...
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2answers
233 views

Changing the free wheel

I'm thinking of changing from 8 speed to 9 speed. What are things I should keep in mind before changing free wheel?
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1answer
202 views

Can you identify this Sachs hub?

I recently picked this up along with a couple of old wheels. I don't know it's age or history. I've only got as far as identifying it as a Sachs. There are no other markings apart from the logo ...
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2answers
1k views

What wheels can I buy that fit this Shimano UG 5 speed freewheel?

I am refurbishing an old 70s/80s bicycle, I have everything ready but the wheels, what set of wheels should I purchase that will fit this freewheel from Shimano?
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1answer
749 views

Ebike gear conversion

I have a 29" mountain bike I'm going to put a motor on. I'm going to replace the back wheel with a 26" and my question is about the gears. I need two of them in the same side to freewheel ...
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2answers
3k views

15T Freewheel Which Works on Flip Flop Hub

I am building a Single Speed Freewheel and I read somewhere that manufactures don't make 15T freewheels that fit on a Flip Flop hub; only 16t and bigger. However, I would like a gain ratio above 3 and ...
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1answer
174 views

Freewheel or sprockets?

I ride a MTB with Shimano components and increasingly when I pedal there is a slippage (no noise or resistance) occurring. Might I Need to replace the freewheel mechanism or is this just the sprocket/...
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1answer
3k views

5 speed cassette on 8 speed hub

I just picked up a cheap wheelset to replace the wheels on a vintage bike. The old bike had a 5 speed freewheel (I think. The model printed on it is shimano-ug). The new rear hub is a shimano fh-rm30 ...
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2answers
1k views

Can a bmx hub support a 7 speed mountain bike freewheel?

Been wanting to build a new set of wheels for my trail rig. Since my bike uses rim brakes, which work good enough to not upgrade to disc's, I'm going to re-use my old rims. Problem is they are 48 ...
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1answer
2k views

When I pedal the back wheel doesn't turn [closed]

When I pedal my back wheel of my BMX bike doesn't turn. About a month ago I took my bike to the shop and they said it would be a 200 dollar fix with my tune up. It all started with a while ago, I ...
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2answers
9k views

Options for replacing a 7 speed Shimano cassette / chain

I would like to replace my 7 speed HG70 cassette and chain. My problem is that it is increasingly difficult to find quality parts for 7 speed system. My bike is a Trek 970 from 1993, originally with ...
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1answer
2k views

Is changing wheel necessary to use a freewheel with different number of gears?

Approx. 3 weeks ago I found an abandoned frame (including handlebars, fork, brakes, pedals and shifting gears attached to it). I decided to use it to build a new bicycle since only recently I've ...
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3answers
3k views

Theoretical question about double drivetrain (both-sides drive)

If one were to take a single-speed flip-flop hub, and fit two identical freewheels, and couple them to two identical chainrings (i.e. two drive-side cranks, one on each side of the bike), you would ...
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2answers
360 views

Regina Extra Freewheel or Cassette

I have a road bike (Carlton Flyer, 1977) with a regina extra rear cassette. I'm interested in downgearing it (i live on a massive hill) and am trying to identify whether it is a freewheel or cassette ...
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2answers
4k views

Cassette jerks chain forward intermittently

I have a 3 year old road bike with Shimano Ultegra 11 speed freehub CX-75 and cassette CS-6800. Recently I started hearing clunking noise from the drivetrain during freewheeling. It appears that the ...
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1answer
444 views

How to find compatable cassette for older Shimano

I have a 2002 Diamondback Oakpiont. The derailleur says c201. Is it freewheel or cassette? If it's cassette, the last gear seems to be the nut (12 notches). Here is link to the bike on Bikepedia. How ...
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4answers
6k views

Tyre rubbing against frame

Bicycle : Fixie, it came with fixed gear and freewheel, I use the freewheel cog. Today, after a tire and tube replacement it now rubs on the frame. The new tire is a little bit bigger but this ...
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2answers
92 views

How to unscrew freewheel sprockets with 9 broken spokes

A friend of mine has this problem. I haven't seen the wheel, but I suppose that the broken spokes are in one "area". It's a 27 inch wheel. Is there any tool that can hold hub tight enough to use a ...
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1answer
1k views

upgrade from MF-TZ21 to 7 Speed cassette freehub

I'm trying to save costs so I want to upgrade to 7 speed 11-28 Cassette to keep the same shifters, dealer says I need a new Freehub, new 7 Speed Cassette, new chain AND NEW DISC BRAKES, why do I need ...
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4answers
4k views

Why is my chain riding up and skipping teeth on the freewheel?

Due to a number of reasons, I would like to keep my freewheel at all costs (It's a Sachs freewheel, the bike has all sorts of more 'vintage' components, and they're hard to come by). From reading all ...
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5answers
53k views

What should I use to lubricate a freehub?

I've noticed my freehub has gotten quite a bit louder over the last few months. Several people have recommended that I lubricate the freewheel by tipping the bike on its side and dripping lubricant ...
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2answers
111k views

When I pedal the rear wheel is not turning

I have a very old bike. It used to work perfectly, but just recently it happened that when I pedal the rear wheel is not turning. Just for notice I pedal in the correct direction, brakes are not ...
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1answer
47 views

Can a 7 speed torpedo cable index a modern day 7 speed freewheel?

I have an old cable from a 7 speed Torpedo internal hub and am wondering if it will properly index a modern day 7 speed freewheel or if it is way off. Is there an easy way to check this? Just ...
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3answers
379 views

Are all ready-made wheels sold “cassette compatible” only?

I will have to change my wheels on my old trusty late-80s Peugeot (PS28) soon. The rear wheel is mounted with a freewheel-type 6-speed hub (not cassette). I was wondering if all ready-made wheels ...
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1answer
774 views

Freewheel not engaging when temperature below about -20c/-4f. What is freezing?

Is it moisture/slush in the freewheel that is not evaporating because I have to keep the bike outside all winter? Then it might freeze when the temperature goes low enough. How long would it take to ...
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2answers
1k views

Using only 7 speeds of an 8 speed freewheel is ok?

I currently have a 7 speed Shimano RD (rear derailleur) that is working perfectly with the stock 7 speed freewheel which is 14-28. Shimano has a MegaRange 7 speed freewheel that is 14-34 but the ...
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2answers
696 views

29" Ascension mountain bike by Schwinn [duplicate]

My freewheel stopped working. I can still pedal forward, but not backward. What's wrong with it?
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2answers
101 views

freewheel stress and possible difficult removal with super underdrive gear?

I tried to research this online but didn't see any examples of this exact concern, which is if I gear down a very cheap mountain bike that has a 7 speed freewheel, do I run the risk of creating so ...