roca rule wrote:
Well as user of MTB discs I do wonder what has taken so long for road bikes to have mounts for these.
I find nothing wrong with good rim brakes but discs on a road bike are something that excites me a little even though I really don't need them in sunny (currently) suffolk.
1. rims that do not wear out.
2. no machined sidewalls means cheaper rims
3. rim profile can be changed providing some (hopefully) aero advantage.
4. carbon rims will become much more propular.
5. rim will surely become lighter in disc only versions.
6. Hopefully 135mm rear hub O.L.D will catch on reducing poor dish and allowing more durable wheels. It is only going to get worse with shimano 11 speed.
Shame it going to be a custom frame to get them now.
1 honestly how long does it take for a rim surface to wear out. (you will need to change pads that might be more expensive and the rotor)
2 just because it is cheaper to manufacture does not mean that manufacturers will pass on the savings to me or to you but
3 if it is a clincher you still need to have structura integrity on walls and you limitation is that not the braking surface.
4 carbon rims will be more popular if they were cheaper ( they are pretty popular for what they cost)
5 or it might become heavier ( more spoke; longer spokes; and beefed up eyelets to resist the pulling force of spokes
6 as it is a lot of fellow weenies complain that some crancksets have wide q factors
let's face it riders like myself and the schlecks will still ride the brakes for too long and overcook the turns. disc brakes are not going to dramatically increase ones ability on the bike, just like di2 did not stop andy from dropping his chain.
1) My current winter wheels are about half worn (~0.4mm of a 1.85mm thick braking surface) due to the foul summer wheather in the U.K up until the end of July. I rode more during this bad spell and it has been killing my rims. They are less than 1 year old with about 4-5K miles on them. My MTB running discs has had the same wheels for 8 years. I would like to have the same for my road bikes.
2) A Velocity A23 with MSW is more expensive than a A23 with NMSW.
3) Then why do we retire rims when they go a bit too concave. It's to stop the rim failing. I have had to do this on my MTB's with v's before.
4) I am refering to the braking performance. There are still many who do not like the braking feel on carbon rims, not a problem on discs.
5) I already ride with more spokes rather than less so no issue for me.
6) I come from MTB riding so a double road crankset feels better narrow to me. I have a road crankset that is too narrrow and would replace it if it was not so nice to look at.
The last point you make I can agree with. No subsitute for reading the road, but with rim brakes the limitations od rim brakes in the filthy wet conditions that I ride in. Discs would help I hope. Were some see problems I suppose I see advantages. Remember the same debate went around the MTB community when discs came in on those bikes. Now try buying a bike with v-brakes and try riding a V-brake on some trails in Wales in the wet. I did once and that experience was enough to make me a disc convert. I would still and do use rim brakes on MTB's (I have one with discs, one with v's and one with canti's) but I do pefer my discs.