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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.

1 vote

Shimano MF Z012 replacement Freewheel?

Assuming you have an indexed shifter, more important that the width of the gears is the spacing - if that's the same (I expect it will be) then it will fit on the hub and the derailleur will move the …
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3 votes

1986 Stumpjumper Sport Cog Replacement

If the 30 is worn to the point its slipping and jumping, I would my guess the others must be due for replacement, along with the chain. Individual cogs tend to only be available in high quality gear …
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4 votes

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

Can you remove the nut from the non-drive side? If so, you should be able to remove the entire axle and either replace it, remove the drive side nut with the axle out of the hub (out it in a vise etc) …
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9 votes

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

While not suggesting its the best option, another option from a new cassette is a 30 tooth chainring. which will give close to same ratios as a 14-34 cassette. Square taper cranks can often be picked …
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4 votes
Accepted

What is the max weight an MTB bicycle with a freewheel can handle until it starts putting hi...

As far as regularly breaking freewheel axles, they are known to be weak compared to other options. A freehub wheel will probably solve your problem, but also check your frame dropout alignment. …
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4 votes

MTB BSO rear hub – bearing size dilemma

Unless you are lucky, the time taken to install loose bearings will be less than the time needed to track down a caged bearing. Cost wise a 'bucket' of loose bearings is the cheapest approach. As such …
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3 votes
Accepted

Direction of chain whip

Not something I do often enough to worry about, but certainly a 'problem' I also have.... One solutiojn that comes to mind is write "Install" and "Remove" in the side of the handle you can see when in …
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8 votes

How to adapt a spoke salvaged from a 26" wheel to a 24" one?

Buy a new one, they cost cents, so the only issue is does it take longer to drive to a bike shop than rehash an old spoke. Used spokes are prone to failure, anyway, heating the spoke enough to create …
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