Alright guys

Quick question,

Ive got a set of off road wheels now for my bike.

So im now going to be running 14/50 gearing

My sm wheels are 14/41 so im going to buy a new chain.

How many links will i need and whats the numbers i need to know, 520.... something

Cheers

I usually buy chain 120 links mainly because that is what the shop stocks.
I fit the new chain and sprockets, put the new chain on and pull it somewhere near the right tension with the wheel as far forward as possible. I then mark the chain where it needs cutting and cut approx 5 links off by grinding the rivet head and knocking the rivet out with a punch. Remember that if you cut it too long you get another go but if you cut it too short you will have 2 split links.
If you intend to ride off road make sure you buy an O ring chain.

Eddie Evans wrote:I usually buy chain 120 links mainly because that is what the shop stocks.
I fit the new chain and sprockets, put the new chain on and pull it somewhere near the right tension with the wheel as far forward as possible. I then mark the chain where it needs cutting and cut approx 5 links off by grinding the rivet head and knocking the rivet out with a punch. Remember that if you cut it too long you get another go but if you cut it too short you will have 2 split links.
If you intend to ride off road make sure you buy an O ring chain.

Noting, to cut to a inner section of chain, and not the outer links, doh.
Yes 520 chain and +1 for the O-ring endorsement.
Leisure Trail will sell you a kit, and work out the chain length required.
As your going to be switching the chain about quite often, get some extra spring links for when the originals tire.
Mike

You'll need a chain block dropper with a 50 tooth rear if you've still got the rear lower chain guide fitted.

You could run 45 tooth on the rear on both sets of wheels and then use a 13 for off-road and a 15 for on-road on the front. Maybe you could have slightly different rears like a 44 for road, 46 for off-road coupled with the front changes. That way you won't need to mess about with the chain length when you change wheels, just swap sprockets.

AlanH wrote:You'll need a chain block dropper with a 50 tooth rear if you've still got the rear lower chain guide fitted.

You could run 45 tooth on the rear on both sets of wheels and then use a 13 for off-road and a 15 for on-road on the front. Maybe you could have slightly different rears like a 44 for road, 46 for off-road coupled with the front changes. That way you won't need to mess about with the chain length when you change wheels, just swap sprockets.

The same thought had crossed my mind, I run 14/45, Trail, Trials, General purpose.
With the 15 tooth front, it be necessary to remove the case saver so some thought required.
Mike

I've just got hold of a spare case saver to modify to allow a 15 tooth front to be fitted. Hopefully it won't need too much ground off it.

Cheers for the info guys

All sorted now