Repair Question - Replacing a Chainring (triple)

FatSh!te

Question for anyone with a bit more maintenance experience than me:

I've a triple on my old commuting bike, and the middle ring is completely worn. Barely any teeth left on it at all! So - I want to replace the middle ring, cheaply if possible, so I'll be doing it myself.

It is apparently a "Prowheel Alu Solid Race Triple". Picture attached.

I haven't been able to find a replacement, and I'm not sure on compatibility either - can anyone point me in the right direction for a replacement? Would one of the stock Sora tripple rings be a suitable replacement? Do I need to get new bolts as well?

I'll also be replacing the chain and the cassette (which is missing a tooth, so probably urgently needs changing!)

Thanks in advance for any input.

seamus

It's probably a standard road 130 PCD chainring set.

Remove the chainring, count the number of teeth and measure the distance between the bolts, as shown here:
http://www.sheldonbrown.com/harris/chainrings.html

If it's at or close to 76.4mm, then you can use any shimano-compatible 130 PCD chainring.

If in doubt, bring the chainring to your LBS and you can verify that it's right before you buy.

FatSh!te

Thanks for that. Much appreciated.

FatSh!te

Finally getting around to ordering a new chainring... still slightly confused:

Would there be any obious issues with either of these:

1)noted as for 9 speed (mines 8 speed triple currently): http://www.chainreactioncycles.com/Models.aspx?ModelID=18513

or this,
2) which is a Sora triple with 39T rather than the 42T I currently have:
http://www.chainreactioncycles.com/Models.aspx?ModelID=38171

my preferance is the Sora triple for cost reasons.

Thanks again for the help.

seamus

8/9 speed isn't really relevant. Obviously 39 teeth will be a little easier than 42, but you shouldn't really notice a huge difference overall.

Either will work with your chainset.

FatSh!te

That makes sense, have ordered it now.

Thanks again for the helpful advice