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Disc Brakes?(6 posts)

Disc Brakes?helton
Mar 25, 2003 2:09 PM
Any of you guys using disc brakes? Seen a K2 enemy frame for sell the other day that has the disc brake tabs and I thought that I might build it up using disc brakes..I have never ridden them, but I was thinking it might be the way to go.. Any advice from you guys would be appreciated..Steve
re: Disc Brakes?TWD
Mar 25, 2003 5:27 PM
This topic has come up a few times before. Here's my take on it.

The general consensus seems to be that if you're talking about cx racing, most people feel they are too heavy and the added braking performance isn't needed in most race situations.

If you're planning on using your cross bike as a go anywhere adventure bike and/or live in a hilly or really wet area, they are more useful.

If you go the disc route, you might want to check on what the rear dropout spacing is on the Enemy. I couldn't find it on the K2 website. If it's 135mm, you're good to go and can use pretty much any mtb disc hub. If it's 130mm, who knows, I'm not sure anyone even makes a 130mm disc hub.
I'd assume the Enemy has 135mm spacing, but I'd make darn sure of it before buying the frame.
re: Disc Brakes?atpjunkie
Mar 25, 2003 5:35 PM
can be done. Avid makes mechanical road discs. For an adventure bike could be quite swanky. For a race bike, a tad excessive and heavy.
re: Disc Brakes?OffRoadTourer
Mar 26, 2003 6:36 AM
Hayes also make a disc brake specific for road bike brake levers. Which raises another point, which brake levers are you intending to use? If you want to use traditional road levers or STI type road levers, the Avids or Hayes may be your only option. Most other cable discs are made with MTB levers in mind (different leverage ratio). I'm sure there are some exotic hydraulic road brakes around (for tandems and the like) but you'll have to use barcon or downtube shifters.

As a point of reference I recently replaced the XT V-brakes on my mountain bike with Shimano's cheapest cable disc (the BR-M475, lower than Deore). The calipers are a lot heavier, so are the hubs, plus the weight of the rotor. But performance is excellent, even better than the XT V's.

You'll need to spend up big to get lightweight hubs, and even then the rotors and calipers will always be heavier than a set of V's or canti's. Unless you really need extreme braking power the extra weight will soon detract from the "WOW" factor of having discs.
re: Disc Brakes?Hardtail
Mar 27, 2003 1:24 PM
Disc for road/cross is in its infancy and therefore it is a bit heavy but I have them on my XC race bike and they work great. I think its the wave of the future, just may take some time to get them dialed in.
not true.......Trevo
Apr 5, 2003 11:25 PM
If you use flat bars on your cross bike(seen hoards who do) You could get a pair of magura Marta SL disc brake(s) They individually weigh 324 grams including rotor! (47 grams lighter than a XT V-brake!)

I plan on using a front disc brake when I get a cross bike.....there frigin discs, and I dont race!