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brake thoughts

Old 02-28-05, 04:44 PM
  #1  
craiginho
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brake thoughts

will work with my setup?

here's what i'm thinking.
putting v-brakes (avid 7 digit maybe) on my '98 cannondale t500
Diacompe 287V brake levers since i have drop bars.

spex that may (not) matter:
wheels are 700c, friction bar end shifters
hoping to put fenders on later, will v-brakes interfear w/ fenders?
stem clamp is 25.4, does that factor into lever selection?

thoughts?
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Old 02-28-05, 09:25 PM
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Michel Gagnon
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It will work indeed.

Regular v-brakes have been designed for fatty mountain bike tires, so with road or touring tires, there is plenty of clearance for fenders. My touring bike has 700x32/37 + fenders and the horizontal cable is a good 15-20 mm above the fender.

There are two potential problems with the setup.

1. The 287-V levers are designed to use a light touch. The downside is that they don't pull quite enough cable for wobbly wheels. No problem in front, but for the rear brake -- and especially for the rear brake of a tandem, it means pads must be 2-3 mm (max) away from the rim.

2. Depending on your frame size and position of rack braze ons on the seatstays, the horizontal cable might interfere with the stays that stabilize the rack. It was a problem on my 25" Trek 520 (but a 23" or less would have been OK), and I replaced the rear brake with a cantilever.

3. Stem clamp diametre doesn't matter, as long as you have road bars that fit your stem. AFAIK, all road bars have the same handlebar diametre at the end and in the horns, IOW, where the bar-end levers and brake levers are located.
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Old 03-01-05, 08:00 AM
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craiginho
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Originally Posted by Michel Gagnon
1. The 287-V levers are designed to use a light touch. The downside is that they don't pull quite enough cable for wobbly wheels. No problem in front, but for the rear brake -- and especially for the rear brake of a tandem, it means pads must be 2-3 mm (max) away from the rim.

2. Depending on your frame size and position of rack braze ons on the seatstays, the horizontal cable might interfere with the stays that stabilize the rack. It was a problem on my 25" Trek 520 (but a 23" or less would have been OK), and I replaced the rear brake with a cantilever.

3. Stem clamp diametre doesn't matter, as long as you have road bars that fit your stem. AFAIK, all road bars have the same handlebar diametre at the end and in the horns, IOW, where the bar-end levers and brake levers are located.
great, thanks. my frame is 53cm/21" so hopefully the cable clearance won't be a problem.
if i opt to switch to cantilevers later can i still use the 287-v levers or would i have to swap those out as well?
(and what does IOW mean? not up on my web speak i guess)
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Old 03-01-05, 11:41 AM
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Originally Posted by craiginho
if i opt to switch to cantilevers later can i still use the 287-v levers or would i have to swap those out as well?
287-V levers work well with cantis. Less mechanical advantage but they feel crisp. I've got them set up with XT old XT cantis.
I was never happy with the way these levers felt with V-brakes.....they didn't seem to have enough pull and felt somewhat mushy.
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Old 03-01-05, 07:47 PM
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Michel Gagnon
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Officially, the 287-V should work only with v-brakes. But don't tell that to my rear brakes (cantis)!

Cantilever brakes can be installed either with a fixed link or with the more traditional u-bolt and straddle cable. Adjustments are shown here on Sheldon Brown's page. Unless you know exactly the size of the link you need, with a straddle cable, you can play with its length until you get the arms and shoes angled the way you want and get the mechanical advantage you want to have.

So my tourer uses a pair of 287-V levers. The right one is hooked to the front v-brake (Avid Single-digit 20), and the left one is hooked to the rear cantilever brake, and I have a fairly similar "feeling" in my hands.


P.S. Sorry for the "tired-guy" abbreviations:
AFAIK: As far as I know
IOW: In other words.
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