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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4 votes
2 answers
256 views

What tool to use for this cassette lock ring?

On an old road bike the freewheel mechanism sometimes gets stuck in the "coasting" mode, i.e., the pedals spin but the bike doesn't accelerate. When spinning the cassette by hand it still ...
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1 vote
1 answer
137 views

7-speed freewheel to Wahoo Kickr Core - what to know?

I have a 7 speed hybrid Infinity Boss three 7 speed with a Shimano TZ21 14-28T Freewheel and am trying to figure out what I need to get this bike on a refurbished kickr core which I'm planning on ...
0 votes
1 answer
25 views

Which freewheel/cassette does a stock Kent Seachange have?

No, I did not buy the wrong remover tool! Stop laughing!
2 votes
2 answers
51 views

Freewheel/gear slipping

I have a new bike which is roughly 6 months old and has not been used much. I've ridden roughly 120 miles on it and the gears or freewheel has started slipping when I'm in the lowest gear while ...
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-4 votes
1 answer
177 views

Can freewheel of coaster brake be used in combination with derailleur?

There is "coaster brake" mechanism, it consists of not only brake, but also of freewheel. As can be seen in answers in Why there are no or few bicycles with coaster brake and external speed ...
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3 votes
3 answers
395 views

Replacement Rear Wheel for Islabikes CNOC 16 (O.L.D. 110 mm)

I own an Islabikes CNOC 16. The CNOC 16 need a new rear wheel; the CNOC 16's rear wheel (16 x 1.35 / 34-305 / 14t freewheel / M30 thread) rim and spokes are damaged after I partially backed over tire ...
  • 33
3 votes
2 answers
357 views

How do I remove the nut off of this when it’s rusted?

I’m trying to remove the nut so I can replace the freewheel cassette thing but I can’t remove it since it’s rusted I’ve tried using WD-40 but it didn’t work
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4 votes
3 answers
860 views

How to silence freehub on DT Swiss Spline wheels?

I just finished building a new gravel/commuting bike. For this build, I have bought a pair of DT Swiss Spline C 1800. However as I switched from an early 80's Peugeot bike to this new gravel, I ...
  • 103
4 votes
5 answers
764 views

Making a 7 spd cassette or freewheel out of a 9 spd (need to save space to fit in dropouts!)

Restoring an old bike with smaller space between the dropouts and want to use it with a "modern" 9 speed XT derailleur. The shifting needs to be fluid so I'm trying to keep "9 speed&...
  • 413
2 votes
1 answer
167 views

MTB BSO rear hub – bearing size dilemma

Background I am fixing up an old MTB BSO (MTBSO? Or even MBSO?). I reckon it's from the 1990s or early noughties. My ambition is to do it myself and as cheaply as possible. The fault is that the axle ...
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6 votes
3 answers
960 views

What to do with a busted freewheel on a vintage road bike?

I have a 1986 Panasonic DX-3000 that I use to commute to work and for casual rides. The freewheel did not survive the winter and the bearing inside it is clearly shot and after changing the chain as ...
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1 vote
4 answers
486 views

18 Speed Mountain Bike Single Speed Conversion

As of right now I currently have an Apollo 18 speed freewheel bike (3 Front and 6 Rear) I bought from Halfords but I have decided that I want to convert it into a single speed bike. This is because I ...
3 votes
1 answer
280 views

0W-20 engine oil for freewheel pawls?

Has anyone tried 0W-20 engine oil for the pawls when servicing a Shimano freewheel? Would it gum up the mechanism? Also interested in how long lasting it would be as I don’t plan to service this ...
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2 votes
2 answers
91 views

Changing chains

I have a 60 year old bike that is eight speed (2 chainrings, 4 cogs in the back). The smallest gear on freewheel is worn out, visibly hooked. I've found a replacement freewheel. I don't have ...
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5 votes
2 answers
350 views

Compound for freewheel locking sprocket threads

I have an oldschool SunTour 6-speed freewheel, where the smallest sprocket screws on the freewheel body to lock the larger sprockets in place. It's a normal right hand thread, so as you pedal in the ...
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1 vote
1 answer
383 views

9 speed Shimano Deore derailleur compatibility

Will a 9 speed Shimano Deore derailleur be compatible with my 13-32 tooth freewheel?
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4 votes
2 answers
509 views

I want to covert my bike from a 7 to 9 speed. I have a Shimano 600 derailleur. Will this work or what would you advise as affordable upgrade?

I want to covert my 7 speed to 9. Currently I have a Shimano 600 derailleur. What parts do I need to make this work?
  • 41
2 votes
2 answers
542 views

How can I remove my stuck freewheel?

I have been trying for days to remove my freewheel using a freewheel tool. I have been using an adjustable spanner for now but it still is not moving. Am I not strong enough? Or is there another trick ...
0 votes
1 answer
566 views

Removing 2 bike wheel nuts that move simultaneously when I turn them?

I have recently removed my mountain bike's rear wheel and there are two nuts that I can't remove because when I use a spanner and turn one end the other end turns as well and I cannot remove them. ...
1 vote
2 answers
166 views

Freewheel identification, removal, disassemble

I have a 2021 Schwinn High Timbre 27.5" mountain bike with a bent rear axle and grinding bearings. I need to overhaul the hub, but I cannot get the 7-speed freewheel off. I don't know who the ...
7 votes
2 answers
1k views

How to adjust drivetrain so I don't pedal empty air?

You might know what I'm talking about: coast a bit, then start a pedal stroke, and there may be zero resistance for a part of the cycle (let's say 30 degrees) like you're pedalling empty air. Then the ...
  • 143
0 votes
1 answer
161 views

Rear wheel not aligned with frame but cog and crank is aligned

My bike was previously a 26er mtb 3x7speed and I converted it now to be a single speed freewheel bike. Is the bike safe to use if the rear wheel is not straight to the frame? It is closer to the drive ...
0 votes
1 answer
107 views

Is my bike safe to use if cogs and crank is not that aligned?

Hey guys is it fine if my freewheel bike which is single speed is not that straight with its chain line, because my cogs and crank arent that straight but it is also not that far, im thinking if it is ...
5 votes
1 answer
178 views

Do SunTour freewheels have uneven cog spacing?

I have a Suntour freewheel (6 spd, "Perfect" model) that has unequal spacer widths. The spacer between the top and bottom 3 speeds is wider than the other 4 spacers. I purchased the bike ...
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1 vote
1 answer
264 views

Can I replace a Shimano MF-Z012 (freewheel) with a MF-TZ510?

Can I replace a (6-speed) Shimano MF-Z012 with a (6-speed) MF-TZ500 or MF-TZ510 freewheel? Bonus question: apart from the "T" both models seem to belong to a related series. What does the &...
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1 vote
3 answers
294 views

What is the max weight an MTB bicycle with a freewheel can handle until it starts putting high stress on the rear axle?

Of course the riding style matters. How hard you go on jumps etc. I don't drive my bicycle that hard. Sometimes i do when im in the mood. My issue is that i am constantly braking my rear axles. It all ...
14 votes
8 answers
6k views

Why are trigger shifters so widely used, instead of the twisting grip shifters(revoshift)?

I recently rebuilt my whole bike. It was in terrible condition. I also decided to get a new freewheel with more speeds. While i was doing some research and looking through shifters and freewheels, i ...
0 votes
1 answer
85 views

My rear wheel is wobbling much after around 3 months of use. Is there any fix that i could do it or should i replace the wheel?

So i checked the few available solutions. But in my case when I hold the wheel and shake it sideways it is not wobbling it is firm. But when I ride I can see the tyre wobbling and it looks like the ...
0 votes
2 answers
155 views

Does anyone know how to take apart this hub to do a single speed conversion

It's a 5 speed joy tech hub. I've tried all but nothing seems to work. Looks like the smallest driver is threaded. Does anyone know how to remove it ?
6 votes
2 answers
977 views

Should the tightness of the QR skewer (rear wheel) affect the freewheel

The tighter I fit my rear QR, the less freely my rear wheel spins. It’s very noticeable. Problem is that when I have the QR quite loose I tend to get a creaky noise from the rear axle under load but ...
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3 votes
2 answers
1k views

Are freewheels really that prone and susceptible to bent axles?

I'm 90kg (198pounds) and I have a 27.5 hard tail mtb 9 speed freewheel and it is quick release. I only use my mtb as a commuter on roads and never on trail. I run my tires at 35-40psi. Ever since i ...
1 vote
1 answer
87 views

Which freewheel/cassette for this bike?

I was recently given a mountain bike for free, which I could fix for use by my husband. It is just missing the rear wheel and freewheel/cassette. As far as I can tell it would have been a 7 speed one,...
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7 votes
3 answers
2k views

How can I lower the gear ratio on my son's bike?

I got a SH Commencal 24" MTB for my son. He loves it - except on climbing steep slopes where he runs out of steam. It comes with a 7-speed 14-28T freewheel (Shimano MF TZ21) + Acera derailleur, ...
4 votes
1 answer
175 views

Is possible to mount an existing freewheel on a fixie wheel?

Would it be possible to mount a freewheel from an existing wheel on thie following type of wheel made for fixies? Or do I need a different axis for the rear wheel such as the one below?
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5 votes
2 answers
1k views

How to get a 7-speed bike with a freewheel on a direct drive trainer

My wife has a 2017 Specialized Alibi Step Through. Specs can be found here: https://www.specialized.com/us/en/alibi-step-through/p/154232?color=&searchText=B6617-7402 I have recently ordered a ...
  • 51
0 votes
2 answers
3k views

Is it possible to fit a 36 hole rim to a 32 hole hub?

I recently had my rear wheel replaced because the old one was bent. Everything about the new wheel was correct except that the shopkeeper ordered a 36 hole rim instead of 32 one. Due to this he told ...
7 votes
1 answer
908 views

SRAM XD driver body wear

I was climbing a steep hill, and all of a sudden my pedals started spinning freely. The freewheel had given up. I removed the cassette and found the XD driver looking like this: The areas around the ...
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6 votes
2 answers
559 views

Freewheel replacement for a touring tandem bike

I have an older touring tandem bike that we use to go on long trips. The gear setup is 3x7. I noticed that we hardly ever use the smallest 3 cogs on the freewheel (of course together with the largest ...
18 votes
7 answers
5k views

What if both wheels were powered by pedalling?

Only the rear wheel of a bike is connected to the drivetrain in order to propel the bike forward. I assume the choice of rear wheel instead of the front wheel is for stability (e.g. avoiding '...
9 votes
1 answer
331 views

Freewheel engaging sporadically when turned backwards at low speed

I noticed that when going at low speed without pedalling the freewheel sometimes seems to engage anyway and pulling the chain until there is enough tension ( as the rear derailleur contracts due to ...
  • 193
5 votes
2 answers
1k views

Just replaced axle on rear wheel. It is loose at first but as soon as I ride it, it tightens and wheel no longer rotates. Help!

Yesterday, the axle on my rear wheel snapped. I spent today trying to replace it with a new axle of same length. Before doing so, I checked bearings, and they seemed ok. When I put the hardware on the ...
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1 vote
1 answer
1k views

Freewheel with lock ring, what is this?

I rescued a bike from the trash and want to convert from 7 speed to 9 speed. The biggest sprocket has "Lock Ring Type" printed on, so I assumed it was a 7 speed cassette (and I wanted to ...
1 vote
1 answer
435 views

How to disassemble pinned sprockets from a freewheel

I have a shimano freewheel like this one Picture taken from Cassette Removal & Installation I need to use separate sprockets from it but I'm not sure how to extract them without causing any ...
6 votes
1 answer
898 views

Can a freewheel hub be swapped out for a cassette hub?

I have a very cheap, yet very old, 26" Chinese rear wheel with a freewheel hub mounted on my MTB. The hub, bearings and cones are shot, but the rim is still good. I have two Shimano cassette hubs ...
6 votes
2 answers
353 views

How I can remove this freewheel (without "destroying" it)?

How I can remove this freewheel (without "destructing" it) ? By "destructive removal" I mean this: https://www.parktool.com/blog/repair-help/freewheel-destructive-removal P.S. I ...
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2 votes
2 answers
3k views

single speed freewheel Shimano SF MX 30 vs Shimano SF-1200

What is the difference between: single speed freewheel Shimano SF MX 30 and Shimano SF-1200 ? Why those freewheels donesn't appear on shimano website? P.S. From the pictures it's clear that the ...
  • 714
1 vote
1 answer
67 views

White Industries ENO on a Hope hub

There seem to be two approaches to single speed freewheels: Screw on to the hub a combined freewheel/sprocket combination (eg. White Industries ENO) Slide on a single sprocket to an existing splined ...
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3 votes
2 answers
224 views

Freewheel or Cassette

Can someone help me, I currently have a 9 speed cassette on my road bike, I would like to get another pair of wheels with larger tyres so I can swap easy depending on where I'm going without having to ...
  • 31
1 vote
1 answer
233 views

Freewheel and quick release

I got myself a bike to fix up. I changed the freewheel on it but I don't know how to position the nut after I put on the new freewheel. If I screw it on too deep the chain will be too close to the ...
3 votes
2 answers
464 views

Freewheel threading on Miche flip-flop hub

I'm currently building a parts list for a new single-speed bike. In the process, I came across a nice looking flip-flop hub from Miche: The "Primato Pista/Strada" I figured that adding the fixed ...
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