I’ve just replaced an 11-42t cassette with an 11-46t.

I’ve fitted the cassette. Whilst not under compression the current chain shifts to all sprockets fine. I know under compression (orange 5) I’ll need a longer chain (one on order).

Being lazy, should I just fit the new chain 4 links longer (to account for the 4 extra teeth) or should I just take more time to faff about letting air out of shock and remeasuring compressed (like I did first time)?

4 teeth is two links as you only use half the cassette at a time.

I use the park tools formula and use the longest chainstay length for it.

Good point, I did think 4 extra links was a lot. Thanks

Thread hijack!

Soooo, if I’m changing the gf’s gears from a 32T chainring with a 42 out back to a 36T and a 50 cassette, I need to add 6 links?

And by links are we talking pairs of links or singles?

Cheers chaps!

A link is a link so inner or outer plates.

An inner and an outer is two links.

But really just measure it, it’s a thirty second job.

30 seconds of effort and thinking? I’d sooner ask a random stranger on the Internet 😉

In that case can i point you to some of the crazy YouTube links on the flat earther whack job thread educational and enlightening videos by the well informed on this thread educational videos on the