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So I have a cheep cross bike that I converted to a town bike a few years ago that I want to turn back in to a cross/gravel bike. Whats better V or cantilever brakes?
 

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It depends. Whatever you decide to choose, make sure it matches the cable pull of your levers. Or you risk poor braking with no modulation or grabby brakes. There are pros & cons to both depending on how you plan on using them.

I've been using mine mostly on the road & I find the stopping power of mini-v's very good especially on downhills.
 

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There's more to it than just v vs Canti as some of each suck and some are good but generally speaking V brakes are stronger. I've read modulation is interior with V but haven't really noticed a difference myself.

You also have to consider clearance. Canti's give you more. But you need to be using pretty massive tires for most V to be a problem so chances are clearance wouldn't be an issue.
 

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Unless I am mistaken, if you are using road bars with STI shifters, they won't pull enough cable for V-brakes to give you effective braking. So cantilevers are your only option.
 

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I've been happy with Avid Shorty brakes with my road levers. They offer lots of adjustment and standard pad holders. They come with 3 different straddle cable lengths that allows you to tailor the brakes to the levers and the type of "feel" that you want.
 

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Huge in Japan
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Unless I am mistaken, if you are using road bars with STI shifters, they won't pull enough cable for V-brakes to give you effective braking. So cantilevers are your only option.
They make helper pulleys for them. I don't know the ratio of the TRP CX8.4 though, they don't look like the same length of a 'conventional' v brake.
 

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Unless I am mistaken, if you are using road bars with STI shifters, they won't pull enough cable for V-brakes to give you effective braking. So cantilevers are your only option.
Here's a table with V-brake arm lengths:
Tech Tip: V-Brake Arm Lengths – GRAVELBIKE
There are also 3 different amounts of cable pull depending on what road brake lever you have. Match levers with brakes to achieve the power, snappiness, and rim/pad clearance you desire. I like TRP CX8.4s with Shimano 11spd levers but people with weaker hands may like a 90 or 95mm brake with these levers that pull the most cable of any road brake lever. Of course they'll have less pad clearance.
 

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I have Shimano V-brakes of which I forget the model with 5700 levers and Kool Stop pads on my Surly. These brakes work super. Better than my 6800 brakes on another bike.
 
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