Help With My 2x10 Set Up

panthro · 11 Nov 2013 at 16:51

Guys, need some help please.

My 9 speed X0 rear mech is knackered and I've decided to convert to 2x10 but need some guidance.

I'm going to buy the following:

M786 XT Long Cage Rear Mech
M770 10 speed XT shifters
11-36 XT Cassette
XT 10 Speed Chain
Gear cable.
New Chain Rings....

but have no idea what teeth combination to go for. All my riding is at trail centres around the UK. I'm pretty useless on the climb if thats any help

Want to buy it tomorrow as I'm going to BPW this weekend.

panthro · 11 Nov 2013 at 18:32

Begbie said:
How much is chain rings compared to the full thing? (forget the name)

Also would a medium cage not be better?

A full groupset on Merlin is £299. If I buy the parts I need it comes in at about £156, plus the 2 x chain rings.

I think a medium might be too short depending on what cassette and chain ring combo you go for?

panthro · 11 Nov 2013 at 20:08

I don't want to go 1 X 10, I'm not fit enough and prefer having 2 X 10.

panthro · 11 Nov 2013 at 23:05

One More Solo said:
In case you don't know, I don't think you need to change chain rings if you're going from 9 to 10 speed, unless you want to of course.

I thought you had to due to the chain links being thinner?

panthro · 13 Nov 2013 at 08:30

Jonny ///M said:
Chains are slightly thinner overall width to fit between the narrower space at the back but the inner plate dimensions are the same so they sit on the same chainrings.

Front mechs are narrower to suit the narrow chain.

i have 9 speed rear mech, 9 speed cassette, 10 speed 28/36 deore chainset and a 10 speed deore front mech running with a 10 speed chain. Works a treat to be honest.

Ok thats good then if the inner dimensions are the same, it should have no problems running on a 9 speed chainset.

panthro · 13 Nov 2013 at 11:33

Just to confirm, I can keep my front mech though?!

panthro · 13 Nov 2013 at 14:16

Thanks guys. Placed my order on CRC. Had to get an Alivio 38T ring as that's all they had, but will replace it at some point if necessary.

Shimano SLX HG81 10 Speed MTB Cassette

SRAM PC1051 10 Speed Chain

Shimano XT M780 10 Speed Trigger Shifter
Black, Pair - Bar Mount

Shimano XT M785 Top Swing 2x10 Front Mech
28.6mm/31.8mm/34.9mm, Top Swing,

Shimano SLX M660 Inner Chainring
Black, 64mm, 26t

Shimano XT M786 Shadow+ 10 Speed Rear Mech
Silver, Medium Cage

Shimano Alivio M411 Middle Chainring
Silver, 104mm, 38t, 4 Bolt

Brand-X Outer Ring Bolts Narrow 7075 Alloy
Black, 5 Pack

panthro · 13 Nov 2013 at 23:38

Yeah should be ok as I've got SLX cranks