Thorn 110mm 5arm Reversible SINGLE ring 42T

[swayzak]

Hello

This chain ring came with my Sterling (2010) but I can't seem to find an identical replacement from SJS

Is the 42T version still available?

Thanks

[PH]

Is it not this one?
https://www.sjscycles.co.uk/chainrings/34-thorn-110mm-bcd-5-arm-reversible-single-chainring-332-inch-black/

[swayzak]

Thanks

Ah, I thought 42T referred to number of teeth!

So I think this is the same model (will count number of teeth on current one)

I can't see the rear sproket (for Rohloff) listed on my original invoice - is there a likely replacement candidate for this as well?

I'm looking at changing the whole drive train as pretty worn now

[Andyb1]

42T will be the number of teeth - on the SJS site you can say what size chainring you want.

There are two different rear sprocket types for Rohloff - the older style screw on type and the later design with a clip.  You need to know which type your bike uses.  And obviously tooth count.

Whereabouts are you?   If your bike has the screw on type you will need a special tool - perhaps easier done by a Rohloff dealer?

[mickeg]

I think the generic default Rohloff sprockets fitted to bikes sold by Thorn was 17 teeth, but you can easily check to confirm what you have. 

But the default Rohloff sprockets that came with a Rohloff hub if purchased elsewhere was 16 teeth.  I built up my Nomad Mk II, bought my Rohloff hub elsewhere, I have 16 teeth on mine.

[swayzak]

42T will be the number of teeth - on the SJS site you can say what size chainring you want.

There are two different rear sprocket types for Rohloff - the older style screw on type and the later design with a clip.  You need to know which type your bike uses.  And obviously tooth count.

Whereabouts are you?   If your bike has the screw on type you will need a special tool - perhaps easier done by a Rohloff dealer?

Doh! Yep I see that now, thanks

Will check teeth on rear sprocket as well