Joshua Putnam's Trail article

http://www.phred.org/~josh/bike/trail.html

This page (and whole website) seems to be down. Does anyone have a copy of
the excellent article, and can Joshua be contacted to ask permission to
reproduce it on the web (if it comes to that)?

Thanks
~PB

BigP wrote:
http://www.phred.org/~josh/bike/trail.html

This page (and whole website) seems to be down. Does anyone have a copy of
the excellent article, and can Joshua be contacted to ask permission to
reproduce it on the web (if it comes to that)?

Use WaybackMachine :-)
http://tinyurl.com/m3xwn6
http://tinyurl.com/mz5mxj

--
ReGaRdS

++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
"More experienced cyclists learn to "get light"
for a fraction of a second while going over rough
patches; newbies tend to sit harder on the saddle,
increasing the risk of pinch flats."
Sheldon Brown: 1944 - 2008
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++

Coaster wrote:
BigP wrote:
http://www.phred.org/~josh/bike/trail.html

This page (and whole website) seems to be down. Does anyone have a
copy of the excellent article, and can Joshua be contacted to ask
permission to reproduce it on the web (if it comes to that)?

Use WaybackMachine :-)
http://tinyurl.com/m3xwn6
http://tinyurl.com/mz5mxj

Excellent. Thank you.

Jobst Brandt wrote:

Using bicycle jargon of "rake" for
offset and "head tube angle" doesn't help. *Head is undefined.

Rake *: fork angle from vertical
Offset: distance between axle and steering axis
Trail : distance between axle plumb line and steering axis on road


I wouldn't single out Joshua Putnam for his use of "rake." Since at
least the late '70s, the terms "fork rake" and "fork offset" have been
used interchangeably by most bicycle manufacturers. I know rake means
something else in the motorcycle world.

See:
http://waterfordbikes.com/now/geos.php?Model=677

http://www.sheldonbrown.com/gloss_ra-e.html

Art Harris

On Jun 30, 2:43*pm, wrote:
Art Harris wrote:

*http://www.phred.org/~josh/bike/trail.html

This page (and whole website) seems to be down. *Does anyone
have a copy of the excellent article, and can Joshua be
contacted to ask permission to reproduce it on the web (if it
comes to that)?
Use WaybackMachine:

*http://tinyurl.com/m3xwn6
*http://tinyurl.com/mz5mxj



Excellent. *Thank you.
That gets to Putnam's article but the article does not explain why
forks are angled forward, beside not explaining what the function
of the various dimensions are. *Using bicycle jargon of "rake" for
offset and "head tube angle" doesn't help. *Head is undefined.
Rake *: fork angle from vertical
Offset: distance between axle and steering axis
Trail : distance between axle plumb line and steering axis on road
Bicyclist have not heard of a rakish angle, aka steep. *Beyond that
Putnam's article lists Offset but calls it rake in the text. *The
understanding being that a fork taken in hand dragged across the
ground with its offset downward looks like a rake.
I wouldn't single out Joshua Putnam for his use of "rake." Since at
least the late '70s, the terms "fork rake" and "fork offset" have
been used interchangeably by most bicycle manufacturers. I know rake
means something else in the motorcycle world.

He isn't singled out. *That's your definition.

See:

*http://waterfordbikes.com/now/geos.php?Model=677

*http://www.sheldonbrown.com/gloss_ra-e.html

These sites merely explain what people mean by rake and do not define
the terms and their etymology. *

I agree with Art. His references are going with the flow because it is
the flow and they've arrived too late to resist it. No one can say
Sheldon wasn't sensitive to the meaning and arrangement of words.

Many words get divorced from their
roots and get used by newcomers who never gave them a thought.

Vastly irritating, I grant you, but you have to catch the change in
meaning earlier than in this instance if you're to reverse the tide of
slack usage.

A clergyman, now a bishop, used to ask me, every time I railed against
this sort of abuse of the language then becoming the accepted norm,
how I use "precede"...

Andre Jute
Visit Andre's recipes:
http://www.audio-talk.co.uk/fiultra/FOOD.html

Jobst Brandt wrote:
*http://waterfordbikes.com/now/geos.php?Model=677

*http://www.sheldonbrown.com/gloss_ra-e.html

These sites merely explain what people mean by rake and do not define
the terms and their etymology. *Many words get divorced from their
roots and get used by newcomers who never gave them a thought.


Perhaps, but trying to change the terminology now would only cause
more confusion.

Wikipedia has a good article on the subject of bicycle dynamics:

http://en.wikipedia.org/wiki/Bicycle...dynamics#Weave

And motorcycle/bicycle geometry definitions:

http://en.wikipedia.org/wiki/Rake_(angle)

Art Harris