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Road brakes on a hybrid? is it possible?

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Road brakes on a hybrid? is it possible?

Old 10-19-10, 02:07 PM
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BayAreaUser
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Road brakes on a hybrid? is it possible?

A pair of Shimano Dura-Ace BR-7800 brakes, front and rear is available for sale locally. The price is really reasonable so my GF may upgrade her Shimano Tiagra for these puppies.
The question is, would her brakes ( tiagra, stock on a 4.5 Madone) fit my 7.7fx?

Will they work without having to change the levers on my flat bar? I really don't want to change levers or cables, so i'd only get them if they would fit my current set up without major modifications or expense.

Forgive my ignorance as i'm still a newbie, but i noticed that both set ups have two mounting mechanisms.
Road brakes mount on a single point above the fork- similar set up on the rear.
Whereas hybrid brakes are mounted on two points.
My bike has two a small threaded hole where it seems a road brake could be mounted, but isn't that hole meant for installing fenders?

Let me know what you guys think.
I've searched the topic, but haven't found specific answers.
Is it worth even upgrading? is there a minuscule weight difference? would there really be improved breaking?


Thanks =)




https://i720.photobucket.com/albums/w...ike/BR7800.jpg
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Old 10-19-10, 02:10 PM
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Joel S.
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Don't think so, the FX bikes have cantilever brakes, so the mounting points are different. You'd need a different fork most likely. Your fork is Carbon Fiber, so I doubt you want to start drilling into it just for a modest, if any, increase in performance.

P.S. I don't think that's something that can ONLY go on a road bike, if you had a hybrid with calipers like that, you'd most likely be ok.
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Old 10-19-10, 02:30 PM
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They could probably be fit to the frame and fork, but will not work with the levers.

The 7.7fx comes with V-Brakes which have a long pull. Road calipers have short pull.

Also, V-Brakes are a type of cantilever, ergo mount on cantilever bosses. If the fork and frame were already drilled to accept calipers, it would probably work, however, you'd still have the cantilever bosses just hanging out there.
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Old 10-19-10, 03:49 PM
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Sorry, it won't work.

First, the required brake reach is way beyond the maximum reach of the Tiagra calipers (49mm). In fact, I believe the reach is beyond that of the longest reach road calipers available (73mm -- Tektro R556). Second, if the hole in the rear monostay of your bike is the same as it is on my 7.7, a recessed nut is not compatible with that hole. Also, road calipers aren't compatible with your stock levers.

Curious...is there some particular reason why you want to switch brakes?
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Old 10-19-10, 04:04 PM
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Thank you DesertDork. No no particular reason. Since the GF wsa upgrading her brakes, she offered to just give me hers. I figured it may be a nice upgrade IF and only if it didn't require much more additional work/parts.

That does not seem to be the case, so they'll just sit in her garage i guess.
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