What do I need to go from 2 to 3 chain rings ?

[BADGER.BRAD]

Hello all,

My 20 inch folder has at present two chain rings but I would like to add a third as it is all up hill and down dale in this part of Shropshire So what do I need ? there is clearance on the frame for a smaller 32 tooth ring , The shifter with some adjustment will cope with it so it's just literally adding a chain ring .I'm guessing just extra fixing bolts and spacers but what are these called ? Probably not relevant but it is a 5 arm chain ring set up.

Thanks all

 

[DCLane]

You will need a crankset capable of triple chainrings, a triple left shifter and a triple front derailleur. It's likely you will also need a long cage rear derailleur and therefore also a new chain.

It's pretty much an entire groupset and it may not work on such a small wheel size.

 

[fossyant]

Might need a triple front shifter too

 

[Ming the Merciless]

Might need a triple front shifter too

That is what the triple left shifter is in post above yours.

 

[Ming the Merciless]

How about a touring double instead?

 

[fossyant]

That is what the triple left shifter is in post above yours.

We were writing at the same time. Only the one post when I was writing, then DC listed everything.

 

[Sharky]

What do you have now, in terms of chain ring sizes, it's BCD and cassette sprockets.