8 speed road bike shifters

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roubaixtuesday
Posts: 5818
Joined: 18 Aug 2015, 7:05pm

8 speed road bike shifters

Post by roubaixtuesday »

My son has fallen off his bike (again...) resulting in a broken shifter. The other is also rather the worse for wear.

Question is what will be compatible as a replacement.

The originals are Sora 8 speed, triple front derailleur. These (2nd hand cheap at least) seem hard to come by.

For the rear shifter, do I need identical, or is a shimano 9 or 10 speed also compatible?

Also, do I need a triple specific left shifter or are the double and triple actually interchangeable with adjustment via an internal stop?

Thanks
stewartpratt
Posts: 2566
Joined: 27 Dec 2007, 5:12pm

Re: 8 speed road bike shifters

Post by stewartpratt »

You'll be needing 8-speed triples. Which pretty much means Claris. Rose have them cheap, but UK prices seem to be about the same as 105 5700s. If the chain and cassette happen to be worn then perhaps a good time to upgrade…
Brucey
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Joined: 4 Jan 2012, 6:25pm

Re: 8 speed road bike shifters

Post by Brucey »

when STIs first came out I was young and daft enough still that I knew I'd fall off and wreck them on a fairly regular basis. Knowing that, I didn't bother with them for years.

One form of 'upgrade' might be to a more crash resistant shifter of some kind? As suggested above, if the rest of it is a bit knackered you could convert to 9s ( a big selling point with the crasher no doubt) which might soften the blow of not having STIs any more...?

A shopping list for this might be

- 9s bar end or DT shifters
- Kelly's or pauls brackets
- brake levers
- 9s chain
- 9s cassette
- gear cables

everything else can stay, if it isn't worn out.

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
greyingbeard
Posts: 851
Joined: 24 Mar 2015, 10:41pm

Re: 8 speed road bike shifters

Post by greyingbeard »

are 8 speed bar end shifters still available ? Used ones should be ?
Can always use a different number on its friction setting anyway.
pete75
Posts: 16370
Joined: 24 Jul 2007, 2:37pm

Re: 8 speed road bike shifters

Post by pete75 »

Clasis seem a good buy at 64 quid from rose.
An alternative is Shimergo. Campag 10 speed Ergos pull the same amount of cable as Shimano 8 speed or as near as makes no difference 4.79 vs 4.8 mm. They can be used as a direct replacement.
10 speed Veloce are available from Ribble for 66 quid in black and 69 in silver http://www.ribblecycles.co.uk/sp/road-t ... 7000000000 http://www.ribblecycles.co.uk/sp/road-t ... 9000000000 Don't worry that it says double they work fine with triple - have used them thus on two different bikes. You can get spares for Campag shifters so if say a lever is broken it's relatively cheap to replace.
If you wanted to go to 9 on the back the 10 speed Ergos will accommodate this with a slight change in the cable anchorage.

More info here http://www.ctc.org.uk/cyclists-library/ ... s/shimergo
'Give me my bike, a bit of sunshine - and a stop-off for a lunchtime pint - and I'm a happy man.' - Reg Baker
roubaixtuesday
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Joined: 18 Aug 2015, 7:05pm

Re: 8 speed road bike shifters

Post by roubaixtuesday »

Clear and useful, thanks all
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andrew_s
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Joined: 7 Jan 2007, 9:29pm
Location: Gloucestershire

Re: 8 speed road bike shifters

Post by andrew_s »

greyingbeard wrote:are 8 speed bar end shifters still available ? Used ones should be ?
Can always use a different number on its friction setting anyway.

8 speed bar end shifters are still available, and are reported to be more reliable than the 9-speed ones
http://www.sjscycles.co.uk/shimano-ulte ... s-prod385/
Manc33
Posts: 2230
Joined: 25 Apr 2015, 9:37pm

Re: 8 speed road bike shifters

Post by Manc33 »

The Claris 2400 shifters I tried were an improvement over the 2300 because Claris has downshifting on the brake blade.

It only took 25 years for that to trickle down from Dura-Ace to the entry level shifters. :)
We'll always be together, together on electric bikes.
mercalia
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Joined: 22 Sep 2013, 10:03pm
Location: london South

Re: 8 speed road bike shifters

Post by mercalia »

Manc33 wrote:The Claris 2400 shifters I tried were an improvement over the 2300 because Claris has downshifting on the brake blade.

It only took 25 years for that to trickle down from Dura-Ace to the entry level shifters. :)


hmm not true - RSX the cheap group STI set from the late 90's used the system we have today. Then Shimano started going cheapskate? And the RSX 7/8 speed didnt need any trimming and not worse for it ( I know as on my Dawes 1-Down, and works well )
Manc33
Posts: 2230
Joined: 25 Apr 2015, 9:37pm

Re: 8 speed road bike shifters

Post by Manc33 »

mercalia wrote:
Manc33 wrote:The Claris 2400 shifters I tried were an improvement over the 2300 because Claris has downshifting on the brake blade.

It only took 25 years for that to trickle down from Dura-Ace to the entry level shifters. :)


hmm not true - RSX the cheap group STI set from the late 90's used the system we have today. Then Shimano started going cheapskate? And the RSX 7/8 speed didnt need any trimming and not worse for it ( I know as on my Dawes 1-Down, and works well )


It may have been a "cheap group" but was RSX really entry level?
We'll always be together, together on electric bikes.
mercalia
Posts: 14630
Joined: 22 Sep 2013, 10:03pm
Location: london South

Re: 8 speed road bike shifters

Post by mercalia »

Manc33 wrote:
mercalia wrote:
Manc33 wrote:The Claris 2400 shifters I tried were an improvement over the 2300 because Claris has downshifting on the brake blade.

It only took 25 years for that to trickle down from Dura-Ace to the entry level shifters. :)


hmm not true - RSX the cheap group STI set from the late 90's used the system we have today. Then Shimano started going cheapskate? And the RSX 7/8 speed didnt need any trimming and not worse for it ( I know as on my Dawes 1-Down, and works well )


It may have been a "cheap group" but was RSX really entry level?


I think it was the entry level sti group set - just that in those days entry level didn't mean cut down ( just heavier?)
Brucey
Posts: 44651
Joined: 4 Jan 2012, 6:25pm

Re: 8 speed road bike shifters

Post by Brucey »

IIRC you could buy RSX STIs for about £75 in about 1999? I've always found them to be very expensive devices.

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
mercalia
Posts: 14630
Joined: 22 Sep 2013, 10:03pm
Location: london South

Re: 8 speed road bike shifters

Post by mercalia »

Brucey wrote:IIRC you could buy RSX STIs for about £75 in about 1999? I've always found them to be very expensive devices.

cheers


out of interest can u remember what the more upmarket expensive ones cost? I know when I bought my spare set of RSX 8 speed I still have unused, ( incl cables etc) I paid more than £75. When you look at prices for claris here in the UK - some places more than £100 compared to £65 from Rose.de makes you think
Manc33
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Joined: 25 Apr 2015, 9:37pm

Re: 8 speed road bike shifters

Post by Manc33 »

It was after seeing the prices of new stuff like £65 for the 2300's that got me thinking about buying used stuff, way back.

All I have bought since is used stuff.

Surely a used set of Ultegra 8 speed shifters will perform better than brand new 2300/2400 will?

Yes the Claris 2400's when I saw the prices were about £80 a pair. They are more than the 2300's but they should be IMO. The Claris shifters, if anything, are nice looking shifters and comfy to use. As for their performance, no comment, its too subjective and individual. :P
We'll always be together, together on electric bikes.
roubaixtuesday
Posts: 5818
Joined: 18 Aug 2015, 7:05pm

Re: 8 speed road bike shifters

Post by roubaixtuesday »

OK, so I got a second hand identical pair of Sora eight speed triple shifters.

Now having difficulty setting up the front mech.

If the tension is set slack enough to drop down to the small chainring, it doesn't go across far enough to take the large ring without rubbing.

If the tension is adjusted up so it doesn't rub on the large chainring, it won't change down to the lower (although it does sound like it wants to). All this is with the endstop screws all the way out, it's just the tension.

Seems to me that the shifter just isn't pulling enough cable. Everything is lubricated, mech seems free and doesn't look bent (seemed to work before OK)

It it possible it's the wrong shifter? Visually it's identical. Or can you adjust the cablepull in some way? Any other ideas?

I'll try and post some pics to follow
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