On 2019-03-13 16:11, John B. Slocomb wrote:
On Wed, 13 Mar 2019 15:32:49 -0700, Joerg
wrote:

On 2019-03-12 11:13, AMuzi wrote:
On 3/12/2019 10:07 AM, Joerg wrote:
On 2019-03-10 06:34, wrote:
I keep reading see all the bikes coming out and basically
all disc
brakes. I cannot believe rim brakes are going to be gone
but maybe I
am just kidding myself. I frankly hate the disc brake look
and
certainly for a long time parts will be around but are
these rim
brakes a dead deal.


Disc brakes are simply better. Take a look around around
automotive and motorcycles. How many new cars and
motorcycles are there that still have drum brakes in front?

On Sunday I experienced the umpteenth reminder why rim
brakes are inferior. We had to cross some unpaved area on
the road bikes and it had rained. Muddy. Afterwards a
descent on pavement, I reached in and after the usual and
expected one-second of zero brake action the rim brakes came
on. There was an awful grinding noise, you could literally
hear aluminum being eaten.

If I ever need a new road bike it will have disc brakes or I
won't buy.


How many new bicycles have drum brakes? Vanishingly few.


This was just meant as an example. Bicycles have largely remained in the
stone age, like chuck wagons where a chunk of wood pressed against the
steel ring of the wheels to brake. So bicycles kind of skipped a technology.

Supposedly there are bikes used for a long downhill ride in Hawaii that
all have large drum brakes because anything else would overheat.

There is something wrong here as disk brakes were originally built to
avoid the problem of drum brakes' failure when heated by long
descents. In fact I remember seeing logging trucks in the mountains of
California using water cooled drum brakes.


Both can overheat. Water spritzing is something that MTB riders
occasionally also use when on long descents and with a load.

An overheated brake is no fun. A friend had that. I saw him skid through
the last curve, foot out, rear wheel locked, bike partially sideways,
dust plumes wafting off. His front brake had faded. Luckily he is a good
dirt bike rider with the correct instincts about what to do.

--
Regards, Joerg

http://www.analogconsultants.com/