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Framebuilding Lecture in SF w/PVD

4710 Views 64 Replies 20 Participants Last post by jtmartino, Mar 15, 2011

pvd

Discussion Starter · Mar 8, 2011

Hey folks,

I'm giving a lecture in San Francisco on Wednesday about building a bike frame from scratch. It will be fairly light and casual. Aimed mainly at introducing the concepts to folks rather than specific instruction.

Feel free to spread the word.

http://askascientistsf.com/howto/

http://www.sfweekly.com/events/how-to-build-a-bike-from-scratch-2380368/

March 9, 2011 • 7 pm • How to Build a Bike From Scratch w/ Peter Verdone

Bazaar Café
5927 California Street, between 21st & 22nd Avenues
San Francisco, CA
(415) 831-5620

www.peterverdone.com

1 - 20 of 65 Posts

metrotuned

· #2 · Mar 8, 2011

awesome!

stubecontinued

· #3 · Mar 8, 2011

I'll be there, it's 3 blocks from my house!! Cool little Cafe too, always something going on.

iheartbicycles

· #4 · Mar 8, 2011

pvd said:
Hey folks,

I'm giving a lecture in San Francisco on Wednesday about building a bike frame from scratch. It will be fairly light and casual. Aimed mainly at introducing the concepts to folks rather than specific instruction.

Feel free to spread the word.

http://askascientistsf.com/howto/

http://www.sfweekly.com/events/how-to-build-a-bike-from-scratch-2380368/

March 9, 2011 • 7 pm • How to Build a Bike From Scratch w/ Peter Verdone

Bazaar Café
5927 California Street, between 21st & 22nd Avenues
San Francisco, CA
(415) 831-5620

www.peterverdone.com

Are you sure you're qualified for this??

pvd

Discussion Starter · #5 · Mar 9, 2011

iheartbicycles said:
Are you sure you're qualified for this??

More than anyone I know.

iheartbicycles

· #6 · Mar 9, 2011

pvd said:
More than anyone I know.

Then you're hanging out with the wrong people.

G

· #7 · Mar 9, 2011

iheartbicycles said:
Then you're hanging out with the wrong people.

:lol:

pvd

Discussion Starter · #8 · Mar 9, 2011

iheartbicycles said:
Then you're hanging out with the wrong people.

Please, please, please show up and explain to me and crowd there how you are able to form this truly informed opinion. Your years of framebuilding experience and vast portfolio of work should ensure all that are there that you know what you are talking about. Please. Don't hide behind your keyboard. Show the folks there the fine fine bikes you produce.

iheartbicycles

· #9 · Mar 9, 2011

pvd said:
Please, please, please show up and explain to me and crowd there how you are able to form this truly informed opinion. Your years of framebuilding experience and vast portfolio of work should ensure all that are there that you know what you are talking about. Please. Don't hide behind your keyboard. Show the folks there the fine fine bikes you produce.

You misunderstand. You stated that you know more about frame building than anyone you know.

I find this surprising!

You really don't know anyone with more experience than yourself?

EBasil

· #10 · Mar 9, 2011

:skep: Fellas, don't argue. :nono:

Hey, you got any of them red trucks leftover you can bring to the lecture? :thumbsup:

G

· #11 · Mar 10, 2011

pvd said:
Please, please, please show up and explain to me and crowd there how you are able to form this truly informed opinion. Your years of framebuilding experience and vast portfolio of work should ensure all that are there that you know what you are talking about. Please. Don't hide behind your keyboard. Show the folks there the fine fine bikes you produce.

same old pete
:rant:

Menso

· #12 · Mar 10, 2011

Every bike pictured on your site has an absolutely hilariously high rise stem. This is what we do in bike shops when people buy the wrong frame size and then come to us for help. Why do you design your bikes that way? Not only does it look whacko, but bikes set up like that handle terribly. There's a reason why every major manufacturer sets of geometry so stem are run low or negative rise. Seriously, what is your rational?

boomn

· #13 · Mar 10, 2011

Menso said:
Every bike pictured on your site has an absolutely hilariously high rise stem. This is what we do in bike shops when people buy the wrong frame size and then come to us for help. Why do you design your bikes that way? Not only does it look whacko, but bikes set up like that handle terribly. There's a reason why every major manufacturer sets of geometry so stem are run low or negative rise. Seriously, what is your rational?

Straightest line between two points to eliminate weight and flex, instead of zigzaging upwards along a bunch of extra streerer then over with a flat stem then back up with a riser bar. Notice that he pairs the angled stem with a flat bar and no steerer spacers. If it's designed properly it handles exactly the same as a "normal" looking alternative because the grips are in the same exact place relative to the frame

ak77

· #14 · Mar 10, 2011

Straightest line between two points to eliminate weight and flex

Sounds reasonable. Makes me curious. What's the rationale for horizontal stems on most other bikes? Adjustability?

grrrah

· #15 · Mar 10, 2011

boomn said:
Straightest line between two points to eliminate weight and flex, instead of zigzaging upwards along a bunch of extra streerer then over with a flat stem then back up with a riser bar. Notice that he pairs the angled stem with a flat bar and no steerer spacers. If it's designed properly it handles exactly the same as a "normal" looking alternative because the grips are in the same exact place relative to the frame

That may be his theory, but I'm gonna respectfully disagree and when going custom, prefer a longer head tube with a shorter/horizontal stem (for stiffness and aesthetics). I think we all agree about spacers.

boomn

· #16 · Mar 10, 2011

grrrah said:
That may be his theory, but I'm gonna respectfully disagree and when going custom, prefer a longer head tube with a shorter/horizontal stem (for stiffness and aesthetics). I think we all agree about spacers.

Yep, just 'splaining. My preferences are different too

iheartbicycles

· #17 · Mar 10, 2011

beaverbiker said:
your hands may be in the same spot relative a coordinate system in the bottom bracket, but not in the same spot relative to the steering axis and contact patch.

Waiting for PVD to chime in asking for everyone credentials!

You nattering naybobs aren't qualified to second guess PVD!

boomn

· #18 · Mar 10, 2011

beaverbiker said:
your hands may be in the same spot relative a coordinate system in the bottom bracket, but not in the same spot relative to the steering axis and contact patch.

why not?

boomn

· #19 · Mar 10, 2011

beaverbiker said:
a short top tube with a long stem keeps your hands far from the steering axis and over the contact patch more. a longer top tube with a short stem keeps your hands closer to the steering axis and behind the contact patch.

I see what you're saying, but I'm talking about keeping all of the geo numbers the same and only varying headtube length and stem sizing. If PVD's preference is for a longer stem/short ETT then that is a separate discussion. Besides stems at such a high angle look much longer than they effectively are in terms of reach, as the distance from the bar clamp to the steerer is the same as a shorter stem mounted higher on the steerer

iheartbicycles

· #20 · Mar 10, 2011

3

boomn said:
I see what you're saying, but I'm talking about keeping all of the geo numbers the same and only varying headtube length and stem sizing. If PVD's preference is for a longer stem/short ETT then that is a separate discussion. Besides stems at such a high angle look much longer than they effectively are in terms of reach, as the distance from the bar clamp to the steerer is the same as a shorter stem mounted higher on the steerer

What is it that you're arguing?

That PVD intentionally uses short steer tubes and high rise stems to save weight?

Is this conjecture on your part - or is this really PVD opinion?

I would never order a bike this way - it creates too small of a triangle, requiring very long seat posts. Not to mention it limits fitment. There aren't too many high rise stems on the market.

And total weight saved is not going to be much.

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