Chainring/chain replacement

fallingoff

I'm looking to change my chainring from 42/34/24 to 48/38/28 I used a chain length calculator but it "estimated" the original set as (52)104 links and the new set as (54)108 links,but when I counted it is actually (55)110 std.
Should I just add 4 links to make up the new size,which I believe should be (57)114.
If I get a std length (58)116 link chain I can cut it down anyway if it's a matter of try and see.......any advice appreciated..

cooldad

Depends on the chain - most are rubbish if you add links unless you use a masterlink. I'd get a new one and measure it on the bike - how you estimate the length you'll need I don't know.

fallingoff

I've read a few ways of doing it,I was going to buy a new chain anyway,cheers..

386ka

Chainring and cog sizes aren't the only thing that determines the chain length. Where is the chainstay lenght?
The best thing to do is to buy a new chain, and then use the 2 links overlap method.