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 Post subject: STI with XT
PostPosted: Fri Nov 23, 2007 4:57 pm 
South East AEC
South East AEC
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Joined: Wed Oct 03, 2007 3:39 pm
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I have decided to keep my touring bike, but it is in need of renovation, i am going to run it for the winter befor painting it, and also to give me time to collect the parts I want on it. I currently run bar end shifters (in friction mode, 1 shimano, 1 home made), close ratio 7 speed shimano block with a XT rear mech, LK front tripple chainset and the question is ...

What is the chance of STI shifters working with this mix ?


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 Post subject:
PostPosted: Fri Nov 23, 2007 5:18 pm 
Retro Guru

Joined: Tue Feb 06, 2007 5:50 pm
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If you can get an 8 speed STI set, they will work at the rear, the front depends to a huge degree on what age mech you are using, distance between chainrings and about a hundred other variables. Having said that, some "creative" use of the cable clamping bolt to change the leverage ratio at the mech end of things may well get the front working.

As an example, I currently use RX100 8 speed STI shifters pulling an old Shimano 600 7 speed derailleur over an 8 speed cassette and a Shimano LX front derailleur over a Shimano 600 7 speed chainset with no problems at all.


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 Post subject:
PostPosted: Fri Nov 23, 2007 5:27 pm 
South East AEC
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The other thing is how well do they work with Cantilevers ?


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PostPosted: Fri Nov 23, 2007 5:41 pm 
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They should work fine with cantilevers - the cable pull for road brakes (single- and dual- pivot) is very close to the cable pull for cantilevers. They don't work well with V-brakes (which require more cable pull) unless you set the brakes VERY close to the rim.


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 Post subject:
PostPosted: Fri Nov 23, 2007 5:44 pm 
South East AEC
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Thank you.


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 Post subject:
PostPosted: Fri Nov 23, 2007 5:52 pm 
Gold Trader
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I am running Sora STI 8 over a shimano spaced Sachs Maillard block with a Campagnolo Veloce 9 speed mech (with the cable run on the wrong side of the pinch bolt).

It works. Much to my, and everybody elses, surprise!


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 Post subject:
PostPosted: Fri Nov 23, 2007 7:34 pm 
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Joined: Fri Apr 28, 2006 8:42 pm
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Shimano still make 7-speed Sora STIs too, so you could actually get an STI set designed for your bike.


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 Post subject:
PostPosted: Fri Nov 23, 2007 8:39 pm 
Gold Trader
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As in another similar thread, which front mech are you using?

You may find that you need to use a shimano road mech with STis if you have a triple chainring setup. It is mostly an issue with 9 speed and up though.


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 Post subject:
PostPosted: Fri Nov 23, 2007 10:46 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
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TheGreenRabbit wrote:
The other thing is how well do they work with Cantilevers ?


They will be fine with old wider profile Cantis (say pre 1992) but the narrow cantis (low profile) are really dodgy as they require more cable pull. You will need to set them very close to the rim and they won't exactly feel great. V's are a non starter unless you use a V-daptor pulley thing instead of a noodle.


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 Post subject:
PostPosted: Sat Nov 24, 2007 11:14 am 
Old School Grand Master
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Location: No brakes? Way to commit soldier.
I upgraded my roadie to STI with a set of old RSX shifters from e-bay. Worked perfectly. STI on a road bike is a revelation the first time you use it.


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