bdcheung

What is involved from switching my 105 9-speed to a 10-speed?

edit: please don't ask why i want to do this or that, i just want to know what is involved in getting more junk in the trunk.

nitropowered

Shifters, chain and cassette

bdcheung

Can I use any shimano 10-speed compatible shifters, or must they be 105 (assuming I get a 105 cassette)? Do I have to get a 105 cassette for that matter?

odl21

chain / RD / cassette / rear brifter.

depending on your chainrings, you may also need to change them. i use DA 7800 cranks/rings with DA 7700 9 speed chain and FD fine though. FD will probably still be ok.

Al1943

Shifters, cassette, chain, and bar tape. The old derailleurs should be fine, at least worth a try.
Any 10-speed Shimano road cassette will work.

Al

odl21

any 10 speed (shimano) shifter is fine.

odl21

actually, they are right. you don't really need to change the RD at all.

bdcheung

My current 9-speed RD is compatible with a 10-speed casette?

SaabFan

Ultegra, Dura-Ace, and 105 10-speed shifters will all work. You don't have to get a 105 cassette.

The deal with the chainrings is that the spacing between them and width of the chain is different. A 10-speed chain can (potentially) slip down in between the chainrings and lock the crank, but IMHO this isn't really much of a possibility if everything is set up correctly and you're not cross-shifting all the time. If you're super worried about that, you could even just file down the spacers between the rings to get the narrower 10-speed spacing with a 9-speed chainring set.

odl21

there is no indexing in the RD so it should be fine. i use 10 speed RD on a 9 speed cassette and its perfect.

Pitbull

Most of the newer Shimano stuff is 9- and 10-speed compatible. You'll have a part number on the back of the RD - check the shimano website for specs. I know because I'm making this upgrade as we speak - I had some unfortunate circumstances which rendered my 9 speed shifters unuseable so I seized the opportunity to upgrade.

Best of luck.

Why might you have to change the chainrings? Different width chain? One of the things I've noticed since I made the upgrade is the chain is somewhat noisy on the big ring. Is this symptomatic of needing new rings?

SaabFan

Assuming you're not making a huge jump in cassette range (i.e. switching from an 11-23 9 speed cassette to a 12-29 10 speed cassette), it's fine.

bdcheung

hmmm.... would it be incredibly un-OCP of me to have a left 105 shifter and a right DA shifter? lol

Oh, and I'm going from an 12-25 to an 11-23 or an 11-25

Cot Du Trent

I'll play the part of the poor college student here. Can I have your old 105 shifters (providing they're useable)?

bdcheung

<--- is also poor college student

Cot Du Trent

oh yeah! Remember the post about what college students ride now. My bad.

bdcheung

Ok, so what I think I'm going to do is find an 11-25 or 12-25 cassettee and a new right shifter. I'm debating whether I should get a 105 lever or just suck it up and get a pair of Ultegra's or DA's...

Pitbull

Be advised - The shimano 9 spd hoods are different than the shimano 10 spd hoods. Quite a bit different. If you only upgrade your right shifter, your hoods won't match. I can here the OCP criticism now...

bdcheung

I'm just getting DA or Ultegra shifters - the pair.