|Why side-pull brakes?||GE|
Aug 29, 2002 12:45 AM
I'm just wondering, why do road bikes use side-pull brakes but mountain bikes use v-brakes? Aren't v-brakes stronger than side-pulls? In my opinion, road bikes need the most stopping power because they go the fastest.
Also, I noticed road bikes don't use disc brakes. Why not?
Thanks in advance.
Aug 29, 2002 12:59 AM
|on a RB the stopping is limited by tyre grip, not break power - there is more than enough force generated by a side-pull to slip road tyres down the tarmac. We don't want a high-speed skid, nor to go very slowly down steep technical stuff, and generally don't ride with mud covered rims, whereas MTB-ers do.
Same goes for disc brakes - more weight to for breaking force that's not needed (save, arguably in the wet, but there again you are getting into skid territory again).
|"break power "- jeez - I must need one - read that "brake". nm||Eager Beagle|
Aug 29, 2002 1:25 AM
Aug 29, 2002 5:44 AM
|you don't depend on your brakes for a road bike anyway near what you do for mountain biking. v brakes would be overkill since you can easily lock up a sidepull on a road bike and you can possibly modulate them better so they won't lock up. for mountain biking you often have wet/muddy rims and are jamming on the brakes often. discs are great for even better stopping power but are overkill for road bikes--though some tandems have them.|
Aug 29, 2002 8:59 AM
Yes and no. You better have damn good brakes on a road bike because it's more of a life or death situation when you need them (Tyler Hamilton?). Anytime you use your brakes on a mountain bike, it's your choice to attempt that section. Whereas on a road bike, you're at the mercy of motorists'irrationalities.
I think it's just habit and elitism that road bikes all have lo-pro sidepull brakes. I'd love to have long arm center-pull brakes so I could swap out wider tires for rough-road riding and touring. Surely Shimano could adapt their new XTR brakes for the road, maybe do them in chrome or some such.
As for modulation, I think it's just a matter of getting used to V-brakes or discs.
Discs on a road bike would be sweet, the weight penalty nonwithstanding, for this reason: It would give wheelbuilders more options on rim shape, without having to build in a flat braking surface. And, it would extend the life of your rims,because you wouldn't be grinding grit into them...
|Disks on a "Road Bike"||HAL9010|
Aug 29, 2002 11:04 AM
|The (my) Cannondale Bad Boy Ultra has disk brakes. Yes the disk does add to the rotational inertia. But it is very trouble free. The Bad Boy is a road hybrid but not too heavy though not as light as a full road bike. It serves me well. |
Remember: "It's not the machine it's the motor".
Now if I could just improve my motor...
|I think the point is. . .||czardonic|
Aug 29, 2002 11:43 AM
|Disc or V-Brakes would not stop you any faster than well tuned side-pulls. They might lock up the wheels more easily, but with skinny tires on pavement, that's not necessarily what you want.|
|If you want to run canti style brakes get a 'cross bike. (nm)||NJRoad|
Aug 30, 2002 4:15 AM
|re: Why side-pull brakes?||Trux|
Aug 29, 2002 10:39 AM
|Good question. My first RB (1970 Peugeot) had Weimann "center pull" brakes that worked well and always stayed centered. My second RB came with expensive Dura-Ace "caliper" brakes which hardly ever stayed centered.|
|anyone remember U-brakes?||ColnagoFE|
Aug 29, 2002 1:34 PM
|now those sucked royally. I still have a old beater with a read u-brake. When the cable snaps you can't ride it because it locks up the rear wheel.|
|I think you that have a rose colored memory.||Spoke Wrench|
Aug 29, 2002 3:01 PM
|Modern dual pivot side pull road brakes are so much easier to set up and to keep centered than those old straddle hanger center pulls. They stop you better too.|
|My vote for side-pulls||Spunout|
Aug 30, 2002 4:13 AM
|I just put together Chorus on a Lemond. That beefy front brake will put me over the bars with one finger, if the wheel didn't lock up first.
No need for more power there. The performance is fantastic.
|Point taken, but||Eager Beagle|
Aug 30, 2002 7:18 AM
|gainsayers would no doubt say that you have an argument for better modulation, as found on dicsc/V's/cantis/etc.
One finger over the bars braking is dangerous - what if you hit a pot-hole on a fast decent and jab the lever?