Bigger disc brake

On Jun 22, 9:16 am, Devs wrote:

Come to Fort William and do the Witchylou (XC) trails weighing 235lbs

Sounds like you need to lay off the fish and chips a little there,
mate.

CC

P.S.: I've been to Britain. The weather sucks and the women are ugly.

In message .com,
Corvus Corvax writes
Sounds like you need to lay off the fish and chips a little there,
mate.

Why? My other sport is rugby. You might want to look it up. Most
cyclists would be too small to survive past the first time they got the
ball. I could get into a BMI ****ing contest but given that you are a
pretty poor troll and I am doing 100 miles for charity in a few hours I
really can't be arsed.

CC

P.S.: I've been to Britain. The weather sucks and the women are ugly.

they might be ugly but that can be cured with a paper bag. There isn't
enough rain forests left to make paper bags to cover the fat knacker,
mustachioed walruses that pass for women round your parts.
--
Devs
"Punchdown Pete the old Kroner"

Paul Boyd wrote:
Corvus Corvax said the following on 21/06/2007 18:20:

I could skid my tires under almost any circumstance I can imagine with
a set of cantilevers.

I think you need to broaden your imagination.

Folks,
my front XTV brake was brilliant.So brilliant it it thinned and
bursted my Mavic rims in jig time!I've had my fornt disc brake for 2 years
and the rortr is the original!Effective rim brakes are good but uneconomical
and no-one can argue with that!
"Paul Boyd" usenet.dont.work@plusnet wrote in message
...
Corvus Corvax said the following on 21/06/2007 16:01:

What makes you think you will get more "braking power" (whatever that
is) with an 8" rotor?

I changed up to a 7" because I found that my 14st (196lb in American)
weight meant that 6" on the front didn't always fill me with confidence.
An 7" rotor does. For my needs, an 8" rotor is over the top, but I can
easily see that people can need that and more.

--
Paul Boyd
http://www.paul-boyd.co.uk/

"Corvus Corvax" wrote in message
oups.com...
On Jun 22, 5:17 am, Paul Boyd usenet.dont.work@plusnet wrote:
Corvus Corvax said the following on 21/06/2007 18:20:

I could skid my tires under almost any circumstance I can imagine with
a set of cantilevers.

I think you need to broaden your imagination.

Why is it that everybody with a fetish for huge brakes is British?

In any case, I stand by what I said. On the vast majority of bikes, a
good set of Vs gives you more "braking power" than you will ever need.
People buy disks not to get more "braking power", but better
modulation and grip in wet conditions.

With a lot of continuous braking, there is a great amount of heat generated.
A disc brake, with the correct pads, will do a better job of performing
under heat. That's why an 8" rotor is often used instead of a 6" rotor as
the larger rotor can dissipate heat better.

Graham FM wrote:

no-one can argue with that!


Have you been watching this group? If anyone can, we can!

Matt

On Jun 26, 5:24 am, "Roberto Baggio" wrote:

With a lot of continuous braking, there is a great amount of heat generated.
A disc brake, with the correct pads, will do a better job of performing
under heat. That's why an 8" rotor is often used instead of a 6" rotor as
the larger rotor can dissipate heat better.

Exactly right: the real advantage of a larger rotor is heat
dissipation. Of course, no disc will dissipate heat as well as a rim
brake, since the dissipation rate is going to be proportional to
surface area. I can believe that disc pads will _have to_ perform
better when hot than rim brake pads, since, all else being equal, disc
brakes will get a lot hotter. I have gotten rims too hot to touch on a
number of occasions.

Note that none of this has anything to do with more mechanical
advantage from a larger rotor.

CC

MattB wrote:
Graham FM wrote:

no-one can argue with that!

Have you been watching this group? If anyone can, we can!

That's ridiculous.

Bill "I'll wait for it" S.

Corvus Corvax wrote:
On Jun 26, 5:24 am, "Roberto Baggio" wrote:
With a lot of continuous braking, there is a great amount of heat generated.
A disc brake, with the correct pads, will do a better job of performing
under heat. That's why an 8" rotor is often used instead of a 6" rotor as
the larger rotor can dissipate heat better.

Exactly right: the real advantage of a larger rotor is heat
dissipation. Of course, no disc will dissipate heat as well as a rim
brake, since the dissipation rate is going to be proportional to
surface area. I can believe that disc pads will _have to_ perform
better when hot than rim brake pads, since, all else being equal, disc
brakes will get a lot hotter. I have gotten rims too hot to touch on a
number of occasions.

Wow, that's amazing! On a number of occasions? I can't think of the
last ride I did where I couldn't burn myself on my disks (other than
rain rides).
You must live somewhere flat and/or go down hills *real* fast!

Shawn

Corvus Corvax said the following on 22/06/2007 13:09:

Why is it that everybody with a fetish for huge brakes is British?

Mud.

Think about it: a rim brake is
essentially a mechanical disk with a twenty-some inch rotor. And
twenty is better than eight, right?

Wrong - when the tyre and rim is covered with a thick coating of mud.
No rim brake can cope with that.

--
Paul Boyd
http://www.paul-boyd.co.uk/