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Dura Ace 7400 shifters compatibility question

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Dura Ace 7400 shifters compatibility question

Old 04-30-14, 12:41 AM
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fiatjeepdriver
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Dura Ace 7400 shifters compatibility question

I'm building up an older bike and have some DA 7400 7 speed DT shifters and a rear wheel with a shimano 7 speed hub and I want to run my suntour cyclone mk2 rear derailleur. Will this work or is the cable pull different?
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Old 04-30-14, 08:11 AM
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Who knows? Not Many, if any. The ST cyclones were not ever designed to have to be indexable and as such their cable actuation ratios were never mentioned. You'll have to find some one who has tried this combo before, good luck. Why don't you just try it and then you can be the world's expert on this combo. Andy.
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Old 04-30-14, 08:11 AM
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You'll have to be very lucky. The Cyclone was not intended to be an index RD when it was new. You can pick up a 740x RD for $35 (or less). The Cyclone's probably worth at least $20, so that's not much swap cost, if any.
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Old 04-30-14, 09:29 AM
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the 7400 shifters have a friction mode
so yes
it will work
but very unlikely that the indexing will work
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Old 05-01-14, 12:29 PM
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I'm going to end up using my other rear derailleur, I just thought the cyclone looked better on the bike.
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Old 05-01-14, 12:52 PM
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Originally Posted by fiatjeepdriver View Post
I'm going to end up using my other rear derailleur, I just thought the cyclone looked better on the bike.
I hope your "other RD" is a 740x Dura Ace, or you're still not going to index (friction only)
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Old 05-01-14, 12:55 PM
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It's a 7401 so it will work. I just like how this one looked:

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