Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 11-06-10, 11:39 AM   #1
sillygolem
No Money and No Sense
Thread Starter
 
sillygolem's Avatar
 
Join Date: Sep 2010
Location: Anderson, MO
Bikes:
Posts: 707
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What the heck is this?

http://gasandrubber.tumblr.com/post/1463418841

tumblr_lb9uds96M11qcl5oho1_500..jpg

I'm guessing this was for a speed record attempt and the odd rear end on the Porsche was designed to reduce drag for the following cyclist. Note the nearly wheel-sized front sprocket shield.
sillygolem is offline   Reply With Quote
Old 11-06-10, 11:43 AM   #2
Andrew F
Senior Member
 
Andrew F's Avatar
 
Join Date: Feb 2010
Location: New Jersey
Bikes:
Posts: 904
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Wonder if he's got a flip flop hub for hills
Andrew F is offline   Reply With Quote
Old 11-06-10, 11:54 AM   #3
MikesChevelle
Senior Member
 
MikesChevelle's Avatar
 
Join Date: Aug 2010
Location: Boise
Bikes:
Posts: 703
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by sillygolem View Post
http://gasandrubber.tumblr.com/post/1463418841

Attachment 177095

I'm guessing this was for a speed record attempt and the odd rear end on the Porsche was designed to reduce drag for the following cyclist. Note the nearly wheel-sized front sprocket shield.

I dont think that is the shield, that is the sprocket its self
MikesChevelle is offline   Reply With Quote
Old 11-06-10, 12:54 PM   #4
Chombi 
Senior Member
 
Chombi's Avatar
 
Join Date: Jul 2009
Bikes: 1986 Alan Record Carbonio, 1985 Vitus Plus Carbone 7, 1984 Peugeot PSV, 1972 Line Seeker, 1986(est.) Medici Aerodynamic (Project), 1985(est.) Peugeot PY10FC
Posts: 10,879
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 34 Post(s)
Uhmmmmm.... THE FORK IS BENT!!!

Chombi
Chombi is offline   Reply With Quote
Old 11-06-10, 01:11 PM   #5
SoreFeet
Senior Member
 
Join Date: Sep 2005
Bikes:
Posts: 2,058
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Its a bicycle designed for motor pacing. The initial starting speed is assisted by a motorcycle or automobile. The world record setting for that kind of bicycle began in 1932 and used TA cranks.
SoreFeet is offline   Reply With Quote
Old 11-06-10, 01:15 PM   #6
BluesDaddy 
I got 99 projects
 
BluesDaddy's Avatar
 
Join Date: Nov 2008
Location: Hills of Central NH
Bikes:
Posts: 1,508
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
^^ I was going to say that the handling must be insanely skittish with the small front wheel and reversed fork.
BluesDaddy is offline   Reply With Quote
Old 11-06-10, 01:17 PM   #7
curbtender
Senior Member
 
curbtender's Avatar
 
Join Date: Mar 2007
Location: SF Bay Area, East bay
Bikes: Marinoni, Kestral 200 2002 Trek 5200, KHS Flite, Koga Miyata, Schwinn Spitfire 5, Schwinn Speedster, Mondia Special, Univega Alpina
Posts: 3,910
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 34 Post(s)
I don't think the fork is bent. It looks like he flipped it around so he could suck in closer to the car. I'd sure hate to get my pants stuck in that sprocket.
curbtender is offline   Reply With Quote
Old 11-06-10, 01:29 PM   #8
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Bikes: Several, mostly not name brands.
Posts: 16,530
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 127 Post(s)
Quote:
Originally Posted by sillygolem View Post
http://gasandrubber.tumblr.com/post/1463418841

Attachment 177095

I'm guessing this was for a speed record attempt and the odd rear end on the Porsche was designed to reduce drag for the following cyclist. Note the nearly wheel-sized front sprocket shield.
Google "motor pacing."
JohnDThompson is offline   Reply With Quote
Old 11-06-10, 01:44 PM   #9
sillygolem
No Money and No Sense
Thread Starter
 
sillygolem's Avatar
 
Join Date: Sep 2010
Location: Anderson, MO
Bikes:
Posts: 707
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Things are easy to find when you know the right keywords.

This is from Jean Claude Rude's speed record attempt in 1979. That is the chainring, not the guard. The Porsche was driven by former F1 driver Henri Pescarolo. The bike's rear tire exploded at at 105mph. Rude was unhurt, but he wasn't able to break the world record.

As for the fork, it was assembled that way at the department store.
sillygolem is offline   Reply With Quote
Old 11-06-10, 02:08 PM   #10
randyjawa 
Senior Member
 
randyjawa's Avatar
 
Join Date: Apr 2007
Location: Thunder Bay, Ontario, Canada - burrrrr!
Bikes: 1982 Tomassini, 1963 Peugeot PX10, and eight special issue Canadian lightweights...
Posts: 7,351
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 75 Post(s)
Quote:
Uhmmmmm.... THE FORK IS BENT!!!
Of course the fork is bent. Look at the bumper on the car it ran into:-)
randyjawa is offline   Reply With Quote
Old 11-06-10, 03:44 PM   #11
DiabloScott
It's MY mountain
 
DiabloScott's Avatar
 
Join Date: Sep 2006
Location: Mt.Diablo
Bikes:
Posts: 6,856
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 172 Post(s)
Quote:
Originally Posted by curbtender View Post
I don't think the fork is bent. It looks like he flipped it around so he could suck in closer to the car.
I think they did it like that because the bike handled better when the front wheel touched the bumper. Lots of those motorpace bikes had them that way.
DiabloScott is online now   Reply With Quote
Old 11-06-10, 06:58 PM   #12
cudak888 
www.theheadbadge.com
 
cudak888's Avatar
 
Join Date: Sep 2005
Location: Southern Florida
Bikes: http://www.theheadbadge.com
Posts: 22,744
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Look up stayer bicycles of more examples of that sort of fork.

-Kurt
__________________
cudak888 is offline   Reply With Quote
Old 11-06-10, 07:06 PM   #13
T-Mar
Senior Member
 
Join Date: Nov 2004
Bikes:
Posts: 12,136
Mentioned: 45 Post(s)
Tagged: 1 Thread(s)
Quoted: 238 Post(s)
The act of bicycle pacing behind a motor vehicle is traditionally called "staying". The bicyles are refered to as "stayers" and have steep head angles, smaller front wheels and reverse rake forks to allow the cyclist to be closer to the motor vehicle for a better draft. The negative rake actually restores trail lost due to the smaller wheel and steeper head tube.
T-Mar is offline   Reply With Quote
Old 11-06-10, 09:14 PM   #14
mudboy
Senior Member
 
mudboy's Avatar
 
Join Date: Sep 2008
Location: Collegeville, PA
Bikes: Ruckelshaus Randonneur, Specialized Allez (early 90's, steel), Ruckelshaus Path Bomber currently being built
Posts: 1,354
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Alternately, steher.
mudboy is offline   Reply With Quote
Old 11-06-10, 09:38 PM   #15
Roll-Monroe-Co
Senior Member
 
Join Date: Jul 2005
Bikes:
Posts: 2,165
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Quote:
Originally Posted by sillygolem View Post
What the heck is this?
It's what little boys do when real men are doing this: http://www.recumbents.com/wisil/whpsc2010/results.htm
Roll-Monroe-Co is offline   Reply With Quote
Old 11-06-10, 09:42 PM   #16
Squirrelli
GONE~
 
Join Date: Apr 2010
Bikes:
Posts: 6,757
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Roll-Monroe-Co View Post
It's what little boys do when old men are doing this
Fixed it for you.
Squirrelli is offline   Reply With Quote
Old 11-06-10, 09:51 PM   #17
tugrul
Senior Member
 
tugrul's Avatar
 
Join Date: Jul 2009
Location: Portsmouth, NH
Bikes:
Posts: 2,438
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by sillygolem View Post
The bike's rear tire exploded at at 105mph. Rude was unhurt, but he wasn't able to break the world record.
That explains the Porsche.
tugrul is offline   Reply With Quote
Old 11-07-10, 10:50 AM   #18
prettyshady
12345
 
Join Date: Feb 2008
Location: south france
Bikes:
Posts: 1,249
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
In england t was Dave Legrys, http://www.youtube.com/watch?v=BmpxJWAJbFM

also on rollers, http://www.youtube.com/watch?v=q77GMkXzOVE
prettyshady is offline   Reply With Quote
Old 11-07-10, 12:39 PM   #19
Jeff Wills
Insane Bicycle Mechanic
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Bikes:
Posts: 7,980
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Quote:
Originally Posted by sillygolem View Post
Things are easy to find when you know the right keywords.

This is from Jean Claude Rude's speed record attempt in 1979. That is the chainring, not the guard. The Porsche was driven by former F1 driver Henri Pescarolo. The bike's rear tire exploded at at 105mph. Rude was unhurt, but he wasn't able to break the world record.

As for the fork, it was assembled that way at the department store.
Later motorpaced records were set by John Howard (152mph):
http://www.canosoarus.com/08LSRbicycle/LSR%20Bike01.htm
and Fred Rompelberg (167mph):
http://www.fredrompelberg.com/en/htm...erg/record.asp

The "reversed" fork adds trail to the frame geometry, which adds stability at speed.

... but I do like the "department store" reason.
__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline   Reply With Quote
Old 11-07-10, 12:52 PM   #20
Picchio Special
Senior Member
 
Join Date: Jul 2007
Location: Lancaster County, PA
Bikes: '39 Hobbs, '58 Marastoni, '73 Italian custom, '75 Wizard, '76 Wilier, '78 Tom Kellogg, '79 Colnago Super, '79 Sachs, '81 Masi Prestige, '82 Cuevas, '83 Picchio Special, '84 Murray-Serotta, '85 Trek 170, '89 Bianchi, '90 Bill Holland, '94 Grandis
Posts: 5,063
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by sillygolem View Post
This is from Jean Claude Rude's speed record attempt in 1979. That is the chainring, not the guard. The Porsche was driven by former F1 driver Henri Pescarolo. The bike's rear tire exploded at at 105mph. Rude was unhurt, but he wasn't able to break the world record.
I believe that's Pescarolo on the right. He never won a Formula 1 race, but did win Le Mans 4 times.
Picchio Special is offline   Reply With Quote
Old 11-11-10, 11:20 AM   #21
sillygolem
No Money and No Sense
Thread Starter
 
sillygolem's Avatar
 
Join Date: Sep 2010
Location: Anderson, MO
Bikes:
Posts: 707
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Jalopnik recently covered this photo:
http://jalopnik.com/5682223/a-porsch...giant-sprocket
sillygolem is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 02:12 PM.