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Old 09-13-2017, 09:48 AM
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Cx70 top pull with 7800 shifter?

I know one of the 10s DA iterations is noteworthy for having a unique pull ratio that doesn't jive with other road group ders.... but googling around on my phone I'm not finding much help..

Cx70 top-pull work with 7800?

I should also add this is gonna be set up 1x front, so my only purpose for even plugging a front der on is to act as additional chain derailment prevention, and hopefully on-the-fly re-railing. If it'll push the der over far enough to put the chain back on the inside ring, that's all I'm after...

Thanks!

(Cross is coming ... TONIGHT)
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Old 09-13-2017, 09:59 AM
sandyrs sandyrs is offline
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Sorry, this isn't really what you're looking for, but the wolf tooth chainguide is easily worth the $$. Stops the chain from ever dropping, like, ever.

https://www.wolftoothcomponents.com/...braze-on-mount
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Old 09-13-2017, 10:11 AM
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Does seem a little steep for a chain catcher.. is it somehow better than the $10 plastic hook variety?
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Old 09-13-2017, 12:48 PM
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commonguy001 commonguy001 is offline
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The DA 7800 front derailleur pull wasn't anything special and worked with pretty much any Front D so I'm thinking it'll be fine. Double fine I'd think if you're only using it to flop the chain back on although if you're using a narrow wide ring I bet you don't lose it. I rarely ever dropped a chain racing cross even without a narrow wide chainring but I was fairly smooth... and slow.
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Old 09-13-2017, 12:57 PM
sandyrs sandyrs is offline
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Quote:
Originally Posted by Dead Man View Post
Does seem a little steep for a chain catcher.. is it somehow better than the $10 plastic hook variety?
The main benefit I've found is adjustability. My frame's FD mount is in a weird place, and other catchers would always hit the chain. It also covers the chain on all three sides. The plastic hook ones don't cover the top of the chain, unless I'm thinking of a different style from the one you're referring to. In any case, it's definitely bike jewelry, but it works really damn well!
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Old 09-13-2017, 01:01 PM
Gummee Gummee is offline
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IDK about 7800, but I DO know that derailleur will work with 6800 and/or 9k

M
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Old 09-13-2017, 08:27 PM
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Thanks brus. Gonna give it a go
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Old 09-14-2017, 04:00 AM
darkmother darkmother is offline
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I used a CX 70 top pull FD with 7800 shifters on my old CX bike. It worked fantastically well paired with 36/46 shimano rings.

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