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Old 06-19-08, 07:44 PM   #1
PhilThee
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Can I use a 10spd brifters with an 8spd system?

I have an old 8spd Shimano setup on my 94 Bridgestone RB-1.
I have some extra Ultegra 10spd parts so I'd like to do some parts swapping.
I already use the 10spd Ultegra front and rear derailleurs on it.

I'd like to use the Ultegra Brifters that I have, if I can..

Will they work?

Or will there be too much movement for the cassette?
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Old 06-19-08, 07:53 PM   #2
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To use the 10-speed Shimano shifters you will need a 10-speed Shimano compatible cassette and 10-speed chain. You will need to use the thin spacer at the back of the cassette, it comes with the new cassette.

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Old 06-19-08, 07:56 PM   #3
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I've found that the right shiftmate will cover just about any combination. for your situation the shiftmate 4 should do the trick. if in the future you need a different combination, you can just order a new cable cam.
I'm running 9sp shifters with an old DuraAce der. it's not supposed to work, but with the right shiftmate combo it works fine. go to www.jtekengineering.com/shiftmate.htm
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Old 06-19-08, 08:37 PM   #4
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I've found that the right shiftmate will cover just about any combination. for your situation the shiftmate 4 should do the trick. if in the future you need a different combination, you can just order a new cable cam.
I'm running 9sp shifters with an old DuraAce der. it's not supposed to work, but with the right shiftmate combo it works fine. go to www.jtekengineering.com/shiftmate.htm
Now that's weird. I don't know if I'd like that thing hanging off the back though...
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Old 06-19-08, 08:48 PM   #5
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Isn't the 94 Bridgestone RB-1 a frame that can be cold set then you can use all the 10 speed parts you have.
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Old 06-19-08, 11:24 PM   #6
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Isn't the 94 Bridgestone RB-1 a frame that can be cold set then you can use all the 10 speed parts you have.
I think the 8 speed hub is already 130mm wide and will accept a 9 or 10 speed cassette.
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Old 06-22-08, 05:50 AM   #7
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Isn't the 94 Bridgestone RB-1 a frame that can be cold set then you can use all the 10 speed parts you have.
I asked the guy that works at the local shop I use. They sell mainly Torelli and other steel frames.He said I could have it widened to accept the 130 spacing hubs if it doesn't already accept them.

He told me about a year ago they can put it into some kind of a frame jig and then take 2x4's to it to widen it out a bit.
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Old 06-22-08, 08:21 AM   #8
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The rear dropouts on an 8 speed should already be 130mm apart. FYI
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Old 06-22-08, 08:54 AM   #9
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The rear dropouts on an 8 speed should already be 130mm apart. FYI
That's what I think too. My Bridgestone is older than '94 and it came with 130mm dropouts from the factory. I'd bet the rent money yours is too.

If you have any doubt at all, just measure between the dropouts with a ruler. Sometimes 1 measurement is worth 1,000 guesses.
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Old 06-22-08, 08:58 AM   #10
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I'll do that and see.

I have the parts so why not if it'll fit.

The SIS 8spd brifters are getting stiff and aggravating.
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Old 06-22-08, 09:54 AM   #11
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You can spend $35 for a shiftmate, or $50 for a 10 spd cassette and $25 for a chain
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Old 06-22-08, 10:31 AM   #12
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You can spend $35 for a shiftmate, or $50 for a 10 spd cassette and $25 for a chain

Or "IF" I already have the correct spacing I could just install all my currently owned 10spd parts on it with some $15-$20.00 bar tape.

I even have the bar tape
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