Home Forum Bike Forum please help me use this Evans code!! – med or long cage mech?

Viewing 12 posts - 1 through 12 (of 12 total)
• jamiep
Member

I am going 10*1: 11-36 rear and 32, 36 or 40 front depending on conditions.

Do I go for the med cage slx rear mech? It specifies med is up to 35T, but my (abet limited) understanding previously was two rings = med, 3 rings = long

captaindanger
Subscriber

Pretty sure medium should be fine

captaindanger
Subscriber

Check Sheldon brown website he has a good explanation

raisinhat
Member

Determine Maximum Chainring Difference by subracting the number of teeth in the smallest chainring from the number of teeth in the largest chainring

Determine Maximum Cassette Cog Difference by subtracting the number of teeth on the smallest cassette cog from the number of teeth on the largest cassette cog

Determine Total Drivetrain Capacity by adding Maximum Chainring Difference to the Maximum Cassette Cog Difference

Record the Maximum Cassette Cog (the number of teeth on the largest Cassette Cog)

Work it out for yourself, it’s not difficult.

Medium will be fine, especially if you plan to swap chainrings.

chives
Member

Medium cage has a 35t capacity as you rightly state, so with your potential difference of only 33t it will be fine. Just set your chain length up with the 40t cog fitted to ensure it’s long enough.

jamiep
Member

That made me scratch my head due to the fact I’ll only have one ring up front, but I got there once I realised it is about maximum required capacity. For 10*1, go as short as possible.

capacity required = (big front ring – small front ring) + (big rear cog – small rear cog)

(40 – 40) + (36 – 11)
is 0 + 25 = 25

thanks for taking the time to reply……off to hit up Evans

Well, if you’ll be swappnig chaingrings it will actually be this:
(40-32)+(36-11)
=8+25
=33

Either way, it’s still the right size.

Go short cage and use a couple of different chains

postierich
Subscriber

To late evans code has been pulled!!!!

It hasn’t.

postierich
Subscriber

I stand corrected!

Viewing 12 posts - 1 through 12 (of 12 total)

The topic ‘please help me use this Evans code!! – med or long cage mech?’ is closed to new replies.