Frank Berto's quantifiable derailleur test method

almost fast said:

Anyone remember Frank Berto's derailleur test method? He
measured shifting in a few different ways. From my
(rusty) memory:

- Early or late shifting (SunTour was early, Campy late?)

SunTour was "late." Their indexing shift levers incorporate
this fact: one has to overshift to get the "click"; when the
lever is released, is settles back a bit.

Quoted message said:

- How many turns of the adjusting barrel and still in
adjustment
- Degrees of lever movement to accomplish a shift (not
sure I'm remembering this one right?)

Yup. He strapped super-long clock-arm like levers onto the
existing levers, and aligned them with a monster protractor
to measure the angles.

Quoted message said:

Nice thing was it was *quantifiable*. Anyone have one of
those Bicycling back issues?

I'll try to remember to dig a bit, but I think they've all
been recycled.

Mark Janeba

All that, and more, is contained in Frank Berto's book
"Bicycling Magazine's Complete Guide to Upgrading Your
Bike". Still available for about $15 plus shipping.

Mike Lackey Madison, AL

"almost fast" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Anyone remember Frank Berto's derailleur test method? He
measured shifting in a few different ways. From my
(rusty) memory:

- Early or late shifting (SunTour was early, Campy late?)
- How many turns of the adjusting barrel and still in
adjustment
- Degrees of lever movement to accomplish a shift (not
sure I'm remembering this one right?)

Nice thing was it was *quantifiable*. Anyone have one of
those Bicycling back issues?

Thanks in advance.

Mark Janeba said:

almost fast said:

Anyone remember Frank Berto's derailleur test method? He
measured shifting in a few different ways. From my
(rusty) memory: - Early or late shifting (SunTour was
early, Campy late?)

SunTour was "late." Their indexing shift levers
incorporate this fact: one has to overshift to get
the "click"; when the lever is released, is settles
back a bit.

Compared to Campy, which had to be manually overshifted
and returned. When Sun Tour was pure friction, they
shifted early compared to Campy friction. Ouch, I am
showing my age...

"Mike Lackey" <[email hidden]> wrote in message news:<N2Lac.150611$_w.1680730@attbi_s53>...

Quoted message said:

All that, and more, is contained in Frank Berto's book
"Bicycling Magazine's Complete Guide to Upgrading Your
Bike". Still available for about $15 plus shipping.

Mike Lackey Madison, AL

"almost fast" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Anyone remember Frank Berto's derailleur test method? He
measured shifting in a few different ways. From my
(rusty) memory:

- Early or late shifting (SunTour was early, Campy
late?)
- How many turns of the adjusting barrel and still in
adjustment
- Degrees of lever movement to accomplish a shift (not
sure I'm remembering this one right?)

Nice thing was it was *quantifiable*. Anyone have one of
those Bicycling back issues?

Thanks in advance.

Thanks! Ordered the book through Amazon for $2.35! :-)

Mike Lackey said:

All that, and more, is contained in Frank Berto's book
"Bicycling Magazine's Complete Guide to Upgrading Your
Bike". Still available for about $15 plus shipping.

Also, _The Dancing Chain_ by Berto and others. A history of
derailleur shifting. Very detailed.

--
Frank Krygowski [To reply, omit what's between "at" and
"cc"]

I was really happy when I read Frank Berto's test. I used to
own a bike with a suntour honor rear deraileur. It was one
of the top scorers. the campy super record was one of the
lowest scorers, even though all my racing friends had that
deraileur.

Andres

Tim McNamara <[email hidden]> wrote in message news:<m28yhf1r3y.fsf@Stella-
Blue.local>...

Quoted message said:

Mark Janeba said:

almost fast said:

Anyone remember Frank Berto's derailleur test method?
He measured shifting in a few different ways. From my
(rusty) memory: - Early or late shifting (SunTour was
early, Campy late?)

SunTour was "late." Their indexing shift levers
incorporate this fact: one has to overshift to get
the "click"; when the lever is released, is settles
back a bit.

Compared to Campy, which had to be manually overshifted
and returned. When Sun Tour was pure friction, they
shifted early compared to Campy friction. Ouch, I am
showing my age...

(andres muro) said:

I was really happy when I read Frank Berto's test. I used
to own a bike with a suntour honor rear deraileur. It was
one of the top scorers. the campy super record was one of
the lowest scorers, even though all my racing friends had
that deraileur.

Andres

Tim McNamara <[email hidden]> wrote in message news:<m28yhf1r3y.fsf@Stella-
Blue.local>...

Quoted message said:

Mark Janeba said:

almost fast wrote:

> Anyone remember Frank Berto's derailleur test method?
> He measured shifting in a few different ways. From my
> (rusty) memory: - Early or late shifting (SunTour was
> early, Campy late?)

SunTour was "late." Their indexing shift levers
incorporate this fact: one has to overshift to get
the "click"; when the lever is released, is settles
back a bit.

Compared to Campy, which had to be manually overshifted
and returned. When Sun Tour was pure friction, they
shifted early compared to Campy friction. Ouch, I am
showing my age...

I was overjoyed to finally buy a slightly used Campy RD back
in the day. I was very disappointed in its shifting compared
to my well used Cyclone.