Coverting from Shimano 9 speed to Shimano 10 speed

garyk72

Hi Guys,

I'm hoping someone can help with this query? I currently have Shimano Tiagra 9 speed on my Giant defy alliance and wondered what new components I would require to move to 10 speed? Obviously I realise that I would need a new 10 speed cassette, but what other bits would be needed (if any)?

I have a compact 50/34 chainset by the way

Cheers
G

Monty Dog

Shifters, cables, cassette and chain minimum. You should be able to keep mechs, but new jockey wheels on the rear mech may help. No worries on chainset.

smidsy

I wouldn't bother. 9 speed is fit and forget, all these new speeds offer nothing extra in performace terms and just need lots more maintenance due to ever thinner componentry.

me-109

^^What Monty said, but I disagree with smidsy, although that may depend on your reasons for changing. I was able to replace some nasty Sora levers and sell the nearly new parts I took off, so the change cost me not a lot. I kept the spread of gears but filled in the ratios with ones I like and use.

garyk72

Cheers for the advice guys. My reason for possibly wanting to change to a 10 speed set up was simply to do with moving with the times, how long before 9 speed componentry is no longer available? The current set up I have works like a dream to be honest. I may have just talked myself out of it!!

I assume that a nine speed running a 12- 28 cassette has slightly bigger jumps in gearing than a 10 speed running 12 -28?

displacedaussie

There's plenty of 9-speed stuff on eBay going for (semi-) reasonable prices. I've slowly been upgrading my 9-speed Shimano 105 to 9-speed Dura Ace as bits wear out.

A 12-28 9-speed Tiagra cassette probably looks something like: 12/13/15/17/19/21/23/25/28

Whereas a 12-28 10-speed might be made up of: 12/13/14/15/17/19/21/23/25/28

So you'd be gaining a 14 sprocket.

garyk72

Now 9 speed Dura Ace sounds great compared to 10 speed Tiagra!! For the price of missing out on a 14 sprocket I think I may stick to 9 speed and upgrade it as I go.

Cheers for all the advice guys, much appreciated.

G

smidsy

I do not believe you will get any better (or ever need) than 9 speed DA.

No I am not getting onto the Campag/SRAM argument.

displacedaussie

And for what it's worth, 10-speed 7800 DA derailleurs seem to work fine with a 9-speed drivetrain, so you could always get those and then sneak in some other 7800 bits over time...

islandman

I've been running 10speed on my road bike for a couple of years and hardly ever shift only one gear, especially on the flat, gaps are so small I usually shift two at a time. I definitely think it's more of a marketing " advance" than useful. Suppose I'll be running 11 speed before too long changing three at once.

smidsy

displacedaussie wrote:

And for what it's worth, 10-speed 7800 DA derailleurs seem to work fine with a 9-speed drivetrain, so you could always get those and then sneak in some other 7800 bits over time...

This is true as mechs are not actually speed specific - they just move how far the STI tells them too.

Chris87

I've just been piecing together everything to upgrade from 8sp 2300 to 10sp 105, through a combination of checking the classifieds on here, ebay and chain reaction cycles I've been able to get shifters, front and rear mech, cassette and chain for about £220

slightly different situation to yours (upgrading due to components wearing out) but at least it gives you and idea of how much it might cost you to change.