BigLegEmma, GGM, Marcelo: Pegoretti Rides

that's why the two numbers -- frame setback and saddle height. unless someone is doing something really stupid with the saddle (all the way forward on a zero setback post, for instance), one would get an idea "within the acceptable range" of what saddle setback would be if one has frame setback and saddle height.

[e-RICHIE]

Originally Posted by Needs Help

e-RICHIE,

I'm confused again. What relevance does the 'l' measurement have? Doesn't the rider's position relative to the bottom bracket also depend on how far the post is extended. If the post is extended farther, then the rider moves rearward, and if the post is shortened, the rider moves forward, yet 'l' would be the same in both cases. So, it seems to me if someone said my frame setback is X, that wouldn't tell you much about their position relative to the bottom bracket.

"I" stays the same on a pre-built bicycle but "R" describes
where you sit on it. as an example, if the "R" is 8cm but
the "I" is 14cm, it will tell an enlightened viewer that your
saddle is shoved rearward on -that- frame. since all the tubes
are connected, it is likely that a poorly thought out frame
setback distance with have adverse affects on resultant
measurements elsewhere, be they cg, or front wheelbase
(handling issues), etcetera.
conversely, if the "R" is 5cm and the "I" is 17cm, it is likely
that the saddle is shoved forward. same problem - different
resultant issues.
if someone states that their "R" measurement is "X" and it
works for them and their lower body output is "fine", then
the measurement is a good starting point when a new sheet
of paper is used to draw the next bicycle. one could either
incorporate or ignore the "I" measurement on the existing
bicycle depeding on the feedback of the user and/or the
experiences-in-the-field of the constructor.
e-RICHIE©™®

[weisan]

WOW!

This thread is heading towards the Cycling Museum Hall of Fame.

[christian]

Originally Posted by e-RICHIE

conversely, if the "R" is 5cm and the "I" is 17cm, it is likely
that the saddle is shoved forward. same problem - different
resultant issues.

Hey Richie,

If my "I" is 17.5 and my "R" is 8cm, and the scoopy part of the saddle aligns with the seattube, am I e-RICHIE approved?

Thanks for the tips on locks btw, I had lox/cream cheese on pumpernickel at Zabar's Cafe yesterday afternoon. Mmmm.

- Christian

[e-RICHIE]

Originally Posted by christian

Hey Richie,

If my "I" is 17.5 and my "R" is 8cm, and the scoopy part of the saddle aligns with the seattube, am I e-RICHIE approved?

Thanks for the tips on locks btw, I had lox/cream cheese on pumpernickel at Zabar's Cafe yesterday afternoon. Mmmm.

- Christian

yeah.
you're cool.
from now on you are christian©™®
your's truly -
e-RICHIE©™®

[Chief]

I measure R = 3.5 cm and I = 14 cm. What is the implication?

Thanks,
Chief

[e-RICHIE]

i'm thinking 'bout a randy newman song...
banasasas!

[mjb266]

Bump for a seven year old epic discussion. Learned a lot and still can learn from this. So, is Round the same round from the salon???

[dave thompson]

Originally Posted by mjb266

Bump for a seven year old epic discussion. Learned a lot and still can learn from this. So, is Round the same round from the salon???

Yup, he builds only with round tubes.

[Louis]

Originally Posted by dave thompson

Yup, he builds only with round tubes.

Dave, were you just kidding? I'd have to go downstairs to check to be 100% sure, but I believe my Duende DT is not a cylinder.

Louis

[thinpin]

Originally Posted by Louis

Dave, were you just kidding? I'd have to go downstairs to check to be 100% sure, but I believe my Duende DT is not a cylinder.

Louis

Mine was the last time I looked!

[christian]

Do we have an ophthalmologist in house for Louis?

[Fixed]

Golden gem all the old heavyweights are here in this post
Cheers

[nelson]

Before Dario went "Round", he experimented with many different shaped tubes. The earliest Duendes (as well as the Team Customs) had teardrop shaped tubes. These were the first frames to be marketed under the Pegoretti name. When he was building for Pinarello, he built the Radius, which actually had some square sections of tubing. Dario once told me that he went round because a round tube always had the best strength-to-weight ratio and that it was much easier to determine how a round tube will react under different conditions than a non-round tube.

Nelson Frazier
Gita Sporting Goods, Ltd.

[CaliFly]

This thread is one of the reasons I bought...and kept...my Duende.