105/ultegra parts

chatlow

Looking to get rid of my Tiagra 9 speed shifters and get 105 5700 10 speed instead. Also going to be changing rear derailleur, cassette and chain as well. All 105 parts other than the chain as they only seem to offer 11 speed now.

Ultegra do a 10 speed for only £14, so would this setup work ok? Leaving the front derailleur and chainrings (FSA 52/36) alone as I'm told they will be fine with the new parts.

Matthewfalle

10 speed Shimano chain with 10 speed Shimano everything else?

Yes.

silverbugle

You only need to change the shifters, cassette and chain. Both of the old front and rear mechs will work with 10 speed. For the chain any Shimano compatible version will do, including KMC and SRAM and you can use either Shimano or SRAM cassettes.

mr_evil

chatlow wrote:

...other than the chain as they only seem to offer 11 speed now...

11-speed chains work fine with 10-speed parts.

alan_sherman

Why not get the Tiagra 4700 groupset which reportedly works better than 105 5700? Or get 105 5800.
The big benefit in the newer groups are the improved cable pull ratio, and future compatability. Theh downside is you can't use old MTB derailleurs / have backwards compatibility.

e.g. https://www.merlincycles.com/shimano-10 ... oCBlzw_wcB
plus buy a chain.

Or a full Tiagra groupset:
https://www.merlincycles.com/shimano-ti ... 90612.html

Full 105 groupset is £50 more.

chatlow

silverbugle wrote:

You only need to change the shifters, cassette and chain. Both of the old front and rear mechs will work with 10 speed. For the chain any Shimano compatible version will do, including KMC and SRAM and you can use either Shimano or SRAM cassettes.

Is this definite? Just that my Sora RD would mean I could go for a 30t cassette, whereas the 105 RD is limited to a 28t.

Thanks for the Tiagra 4700 link. I will look into this or the 105. I have just looked at 105 5700 vs 5800 and surprisingly, 5800 is newer, but cheaper - £95 for the shifters

alan_sherman

yes - new 105 is very keenly priced. I think on purpose so people move over to the 'new' standards (4 arm crank, derailleur pull ratios etc).

arlowood

chatlow wrote:

whereas the 105 RD is limited to a 28t.

A 105 short cage RD will cope with a 30t largest sprocket. I have run a 50/34 chainset and 12-30 cassette with a short cage RD (both 105 5700 and Ultegra 6700) on several bike builds with no problems.
You just have to make sure that you install the correct chain length and if necessary tweak the B-screw to get the right clearance between the top jockey wheel and the cassette ( mind you I only had to do that on one set-up - all the others worked fine without any fiddling)

mugensi

chatlow wrote:

Looking to get rid of my Tiagra 9 speed shifters and get 105 5700 10 speed instead. Also going to be changing rear derailleur, cassette and chain as well. All 105 parts other than the chain as they only seem to offer 11 speed now.

Ultegra do a 10 speed for only £14, so would this setup work ok? Leaving the front derailleur and chainrings (FSA 52/36) alone as I'm told they will be fine with the new parts.

My winter bike was originally Tiagra 9spd. I changed it to Tiagra 10spd by changing the shifters, chain and cassette. The RD and FD work perfectly with them. I would NOT change from 4500 to 5700 shifters, the FD shifter on 105 is horrible and clunky, 4500/4600 is much nicer and easier. Just buy 4600 shifters, cassette and chain and new cables and your ready for road.

chatlow wrote:

Is this definite? Just that my Sora RD would mean I could go for a 30t cassette, whereas the 105 RD is limited to a 28t.

Thanks for the Tiagra 4700 link. I will look into this or the 105. I have just looked at 105 5700 vs 5800 and surprisingly, 5800 is newer, but cheaper - £95 for the shifters

The Sora RD is short cage and will only accept up to 28T. Your current 4500 RD will take a 30T cassette (I had one on my bike but went back to 28T as i never used the 30T.

silverbugle

chatlow wrote:

Is this definite? Just that my Sora RD would mean I could go for a 30t cassette, whereas the 105 RD is limited to a 28t.

Thanks for the Tiagra 4700 link. I will look into this or the 105. I have just looked at 105 5700 vs 5800 and surprisingly, 5800 is newer, but cheaper - £95 for the shifters

The Sora RD is short cage and will only accept up to 28T. Your current 4500 RD will take a 30T cassette (I had one on my bike but went back to 28T as i never used the 30T.[/quote]

Depends which Sora RD. If its 3500 series both SS and GS cages are rated to 32T. Also if you want to go to 32T with 105 then the 105 GS is also rated to 32T.

gozzy

Another vote for not shifting from 9 speed tiagra to 105 5700. I've just had a hire bike with 5700 on it and it was at best clunky, I wouldn't consider it a worthwhile upgrade from 4500. The rental guy asked me what I thought when I returned it and he agreed it's not great, rather annoyingly he was about to update it 6800 in a few weeks.

chatlow

I got it wrong - mine are 9 speed Shimano Sora STI shifters. Specialized Tarmac SL4. So are we saying:

105 5800 > 105 5700 > Tiagra 4700 > Mine?

alan_sherman

i think the middle two are the wrong way around. New Tiagra is 'better' shifting than old 105, the brakes are worse but aren't you getting the disc version

chatlow

the 5800 are 11 speed, not 10. Will they definitely be compatible with the new 10 speed parts I am getting?

chatlow

Sorry to drag this up again. I am looking at either 105 or Tiagra shifters. My Sora 9 speed are a bit busted plus I want to go from 9 speed to 10 speed anyway. Zonda wheels arrived yesterday, so will be getting the cassette, chain and RD soon.

Looking either 105 5700 or Tiagra 4700? Would have liked the 105 5800 but that's 11 speed only I have been told? Plus that would mean having to change my 9 speed chainrings too.

Want the shifters to hide away the cables. What do people recommend of the two?

dj58

If you want to use 10 speed and you are buying new STI's, FD, RD, chain and cassette you may as well buy the new Tiagra 4700, IMO.

viewtopic.php?f=40013&t=13022800

svetty

DJ58 wrote:

If you want to use 10 speed and you are buying new STI's, FD, RD, chain and cassette you may as well buy the new Tiagra 4700, IMO.

viewtopic.php?f=40013&t=13022800

Agree, Tiagra 4700 out-performs 105 5700 - especially brakes and front-shifting.

chatlow

okay thanks so if I go for 10 speed then 4700 Tiagra sound the best, buy if I opt for 11 speed and change my chainrings too, then 105 5800.

Thanks all

dj58

chatlow wrote:

okay thanks so if I go for 10 speed then 4700 Tiagra sound the best, buy if I opt for 11 speed and change my chainrings too, then 105 5800.

Thanks all

Yes, and there is the option to use an 11-34T cassette with the RD 4700 GS if you need a 1 : 1 low gear. If however you want to move to 5800 105 11 speed, then as you already know, buying a groupset is the most economical route.

chatlow

DJ58 wrote:

chatlow wrote:

okay thanks so if I go for 10 speed then 4700 Tiagra sound the best, buy if I opt for 11 speed and change my chainrings too, then 105 5800.

Thanks all

Yes, and there is the option to use an 11-34T cassette with the RD 4700 GS if you need a 1 : 1 low gear. If however you want to move to 5800 105 11 speed, then as you already know, buying a groupset is the most economical route.

Thanks bud.

Max I use these days is a 28t, so will prob go for 12-28 from Tiagra. Yeah group usually cheaper but I've no need for brakes or BB and chainrings are in pretty good nic, so I am hoping I can get away with just the RD, cassette, chain and shifters. I am looking into whether my 9 speed Sora FD will cope ok with 10 speed setup. If it does then I will get these separately as total should be no more than 160 whereas group is 250 atm. We'll see.

svetty

chatlow wrote:

I am looking into whether my 9 speed Sora FD will cope ok with 10 speed setup. If it does then I will get these separately as total should be no more than 160 whereas group is 250 atm. We'll see.

It won't, you'll need to get the 4700 FD as the pull ratio is different. The 4700 brakes are also miles better than your existing ones - hence the groupset is the way to go - you can always sell any extra bits you choose not to use on ebay.