1.With disc brakes, your rims will last virtually forever, because there's no wear on the sides from rim brakes. rim wear is generally more of an issue for mountain bikers who ride in dirty conditions, butis also a real issue for high-mileage touring cyclists.
2.disc-brakes eliminate the risk of overheating your rims and blowing tires on mountainous dcscents.
3.disc brakes allow the use of different sized wheels on the same frame. you can run 26 x 2.2 knobbies for off road touring, then swap them for 700 x 20 racing wheels for your local time trail, or anything in between.
4.disca are pretty much weatherproof,so they work as well in the rain as they do in dry conditions. this is probably the most important reason for a touring cyclist to consider them.
"scott" <[email hidden]> wrote in message news:[email hidden]...
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2.disc-brakes eliminate the risk of overheating your rims and blowing tires on mountainous dcscents.
huh?
The kinetic energy of the bike is scrubbed off by the brake pads at the rim converting the kinetic energy to thermal energy which heats up the rims. With too much weight-as is common with tandems or speed common with tandems or recumbents in mountain descents-the rim can heat to the point of blowing a tire. Larger riders could also risk this problem.
Most tandems are designed with at least one hub type brake so that the entire energy dissipation under braking need not be sited at the rim.
4.disca are pretty much weatherproof,so they work as well in the rain as they do in dry conditions. this is probably the most important reason for a touring cyclist to consider them.
My hopes work twice as well in the wet as they do in the dry 🙂
"B i l l S o r n s o n" <[email hidden]> wrote in message news:[email hidden]...
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Scott said:
"mark" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
"scott" <[email hidden]> wrote in message news:[email hidden]... > 2.disc-brakes eliminate the risk of overheating your rims and > blowing tires on mountainous dcscents. > huh?
Chill mang. Just want to distance myself from the kooky post. Yes yes I am kooky too. In fact way more kooky than the thread starter and kooky enough to delineate myself from the average kook.
Well gotta go test out my new forks... gonna ride off of my house and then go to... http://www.raysmtb.com/
3.disc brakes allow the use of different sized wheels on the same frame. you can run 26 x 2.2 knobbies for off road touring, then swap them for 700 x 20 racing wheels for your local time trail, or anything in between.
Many(most) 26" frames will not fit a 700c wheel in the stays/forks.
Not quite. Virtually all 26" frames should fit 700c wheels in the stays/forks. The effective tire circumference is pretty close between 26x2.1 and 700x23. My 26x2.4s on my MTB are actually *larger* than my 700x23s on my road bike. The only issue is rear hub spacing if it's got a road hub, but if it has disc brakes, it's an MTB hub anyways.
In fact, if you browse Sigma's computer manual, they state that 26x2.125 and 700x23 use the exact same circumference for distance, which means you can interchange wheels and get the same result. Whether they correct for the different pressures is another matter.
