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Chain off the front sprocket and still making horrible noises :-[

Not as bad but I guess that's to be expected with no turning resistance.

Haynes manual and some basic tools bought - I guess...

I'm pretty sure the sprocket itself looks ok

http://img24.imageshack.us/img24/6333/21052011031.jpg
http://img96.imageshack.us/img96/6429/21052011030.jpg

I've had the sprocket cover off... nothing obvious in there and chain seems fine.

Could a loose sprocket cause the 'jumping'? It seems to be coming from the transmission, so it looks like I could...

Scotty, do you mean part # 12 on this diagram?

Sprocket carrier bearing (and wheel bearing) now replaced and all seems well at the back end.

There's definitely something wrong at the front end...

Once that's done I'll be listening again to that front sprocket!

More my riding ::)

Turns out the sprocket carrier bearing was shot and the seal gone; loose chain and tight nut were just red herrings. I blame Fish Hill :( lol

Hopefully not long til I'm back on the road ;D

No, it's not constant enough to be anything like that.

It's got worse now and really sounds like something inside the wheel, rather than rubbing externally.

Shavings on the wheel hub. I'm assuming coming from the crunching sound inside the wheel

There's some jumping and a crunching noise from the rear wheel and some shiny swarf deposit, but no movement in sprocket or wheel.

Quickest way back on the road is what I need I think!!!

Redhouse, near the big Asda in North Swindon.

I'm not sure this is 'sortable' now without a new rear wheel (or bearings) at the very least :(

I never denied being a bodger! (I'm an accountant... I'm not useless with a spanner but it's not my forte :-/)

Rear sprocket was suggested when I said it was making a grinding sound, not sure the...

I will check the sprocket tonight (it's a Thundercat).

I think I'll leave the spanner in my toolbox and maybe try to get hold of a socket set!

I've spoken to the garage and the guy insists that if the nut is that tight, the chain couldn't have become loose unless something else was wrong; he's suggested checking the rear sprocket.

Will...

Can't ride it!!!

Am I wasting my time trying again with a large adjustable spanner?

Ditto...

Airgun at 200n/m to remove & tighten the wheelnut (heaven forbid they should actually use hand tools... ) then the wheel has been tensioned by pulling the spindle back and doing the axle...

What makes you think they adjusted the chain tension? Like I said, over 100 miles and a decent ride before any problems.

Is there anything that can make a chain suddenly lose tension? e.g. bust...

I had a new rear tyre a week or so ago, changed professionally. It's been fine since then and I gave it some stick at the weekend once I'd worn the tyre in.

Since that ride, it started making a...