On Saturday, November 11, 2017 at 8:34:13 AM UTC-8, Frank Krygowski wrote:
On 11/11/2017 10:37 AM, Joerg wrote:
On 2017-11-11 07:21, jbeattie wrote:

Â*Â*Â*Â*Â*Â*Â*Â*Â* ... I don't think most people need discs with
giant rotors, but Joerg is a special case.


All one has to do is go down French Creek Road and then Holly Drive out
here on a loaded bike and the li'l 6-incher in back starts to smell.
Can't use the front too much because it's loose gravel. Similar for some
of the long hills in the Sierra east of here. The 8" rotors I mounted
yesterday will allow me to roll down many of the long downslopes without
a cooling-off break or spritzing water onto the rotors.

A friend had 8" on the front and still lost the front brake at the last
curve on a long hillside. One of those "Oh s..t!" experiences.

Hmm. So even 8" isn't sufficient. Good to know.

My brakes are about 25" diameter. I'm keeping them! ;-)

In Joerg's neighborhood but much further into the Sierra, I did Monitor Pass, Ebbetts, Carson and Luther multiple times on loaded and unloaded bikes with either single pivot Campy NR or Mafac cantis. Tioga, too. Ebbets has some 20% pitches. I never once had brake problems.

-- Jay Beattie.