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Well, after mentioning on other threads that I'd not been on a bike in 2021 and how selling off some of my excess bikes was quite liberating, yesterday was a mived day. I bought a singlespeed/fixie, that needed a bit of work, tinkered with it for five minutes, then had a spin around the block.

There's no obvious name on it. I'll have a look for small stickers or embossing later, but from the colours, I reckon it's a Muddy Fox. No need to worry about the paintwork or the light-fingered fraternity with this one.

I'll probably keep it for a couple of months, then move on to pastures new.
 

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A quick question.

The bike I got up there ^^^^, one of the problems was the freewheel not working. I took it apart, hoping to reseat the pawls. Unfortunately, one is broke and the circlip is bent.

I went to the LBS, he doesn't sell parts that small (I was chancing my arm, hoping he'd throw me a knackered one, to make one out of two;)), he also isn't too hot on ordering new parts, it'll be a couple of weeks.:rolleyes:

Internet parts it is! There's a few different sizes (mm's not teeth).

Anyone know where I'm taking the measurements from?

Are all the threads the same?

Photo attached, if it helps.

Cheers.
 

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Right, I think it's got a 34mm internal diameter.

I keep seeing 1/2×1/8 and 1/2×3/32 bandied about, chain size at a guess.? What's the best way to check what I have, without specialist bike tools? I've got a vernier somewhere.

Threads, are there different types or even L/H or R/H ones?

Am I overthinking this?
 

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Right, I think it's got a 34mm internal diameter.

I keep seeing 1/2×1/8 and 1/2×3/32 bandied about, chain size at a guess.? What's the best way to check what I have, without specialist bike tools? I've got a vernier somewhere.

Threads, are there different types or even L/H or R/H ones?

Am I overthinking this?
Probably :D

Single speed bikes usually have a 1/8" thick cogs and therefore need a 1/8" chain. If it uses a derailleur then the cog thickness is 3/32" and need a thinner chain - which is more expensive. All chains for the last 90+ years or so are 1/2" between pins.

Freewheels are usually BSA threaded.

https://www.sjscycles.co.uk/search/?term=single speed freewheel
 

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Probably :D

Single speed bikes usually have a 1/8" thick cogs and therefore need a 1/8" chain. If it uses a derailleur then the cog thickness is 3/32" and need a thinner chain - which is more expensive. All chains for the last 90+ years or so are 1/2" between pins.

Freewheels are usually BSA threaded.

https://www.sjscycles.co.uk/search/?term=single speed freewheel
It's makes more sense when someone else types what you're thinking.:)

Right.

All I need to do is measure the thickness of the cog to take care of the 1/8 V's 3/32. (Or just get the thin one:D).....but you know it'll be 1/8, so stop procrastinating.:D

Go with 34mm.

Ignore everything else.

Thanks.:)
 

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In case it's of use to anyone:

If the single freewheel doesn't have lugs for a special tool, it's not meant to be reused.

Use a drift to undo the cover (L/H thread).

Lift the cover and sprocket off. (Watch the ball bearings go everywhere).

Use a set of stilsons on what's left to unscrew.

:)
 
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