gitaneusa.com Forum Index Register FAQ Memberlist Search

gitaneusa.com Forum Index » Vintage Gitane » Gitane Delta - Origins of the Aerodynamic TT bicycle Goto page Previous  1, 2
Post new topic  Reply to topic View previous topic :: View next topic 
 
PostPosted: Wed Jan 19, 2011 2:48 pm Reply with quote
sandranian
Site Admin
Joined: 27 Feb 2006
Posts: 2701
Location: Southern California
Roger Young told me during a ride a few weeks ago that there might have been problems with the Delta bike's design re: breakage of the bars, head tube and/or steerer.

I had never heard of this, so I asked Theirry...who said he never heard of anything like that either.

The design was in use from at least 1984 until 1990, so I think it must have been a decent one from a quality perspective, right?

_________________
Stephan Andranian
Costa Mesa, CA
www.gitaneusa.com
View user's profile Send private message Visit poster's website
 
PostPosted: Wed Jan 19, 2011 3:02 pm Reply with quote
Wisey
Joined: 19 May 2009
Posts: 631
Location: Brisbane, Australia
From (the few) photos that I've seen, they seem to have been a bit over-engineered. The steerer tube and head tube would have been a heavy gauge to enable the cut out in the front and the handlebar attachment. I have seen internal photos of the Russian bikes that used a similar design, and they looked very heavy too. Even up until the early 90's, light weight wasn't considered to be very important for a TT bike.


_________________
Kind Regards,
Wisey

Delta Dreamin'
View user's profile Send private message
 
PostPosted: Wed Jan 19, 2011 11:01 pm Reply with quote
verktyg
Joined: 14 Jan 2007
Posts: 2814
Location: SF Bay Area
Wisey wrote:
I have seen internal photos of the Russian bikes that used a similar design, and they looked very heavy too.


что является этим (chto eto takoe) WHAT is that? Confused

_________________
Chas.
SF Bay Area, CA USA
==============
1984 Criterium
1969 TdF
1971 TdF
1974 TdF
1984 TdF x 2 Bikes
1970 SC
1971 SC
1972 SC
1984 SC
1984 Team Pro
1985 Professional
1990s Team Replica
View user's profile Send private message
 
PostPosted: Thu Jan 20, 2011 1:43 am Reply with quote
Gtane
Joined: 14 Sep 2007
Posts: 681
Location: UK
I guess there were never many Deltas in existence so they may have just got rotated through the teams until 1990 with the odd one or two being made as required.

TT machines did become heavier, as Wisey says, than road machines whereas they were previously much, much lighter. The additional weight was seen, to a certain degree, as an advantage regards momentum. Even now TT machines are on the heavy side when compared to road machines.

Interesting to hear the weight comment from Thierry Marie, Stephan.

Thanks for the photos Wisey. Is that a solid steerer?

Tim

_________________
Everything has a cycle
View user's profile Send private message
 
PostPosted: Thu Jan 20, 2011 2:10 am Reply with quote
Wisey
Joined: 19 May 2009
Posts: 631
Location: Brisbane, Australia
That's the steerer tube. Although it's more of a solid rod rather than a tube. Standard 1" headset race at the bottom, then it has a cartridge bearing that fits directly into the head tube. That in turn is capped with a lock nut with split pin and a neat cap over the top.



Some of the Deltas had a normal top headset race, while others had a cap similar to this, so they must have also had a similar arrangement for a top bearing inside the head tube. Bottom line: Heavy bike. Just like uncle Thierry said.
Wink

_________________
Kind Regards,
Wisey

Delta Dreamin'
View user's profile Send private message
 
PostPosted: Sat Jan 22, 2011 10:26 am Reply with quote
Gtane
Joined: 14 Sep 2007
Posts: 681
Location: UK
Here's a really nice close-up of a Delta, being carried by Fignon. Notice the Delta brake on the rear and sidepull on the front.

http://tinyurl.com/49d4fx3

Tim

_________________
Everything has a cycle
View user's profile Send private message
 
PostPosted: Sat Jan 22, 2011 11:58 am Reply with quote
verktyg
Joined: 14 Jan 2007
Posts: 2814
Location: SF Bay Area
Gtane wrote:
Here's a really nice close-up of a Delta, being carried by Fignon. Notice the Delta brake on the rear and sidepull on the front.
http://tinyurl.com/49d4fx3

Tim


That was the 1987 TdF

I've never seen those Cycles Gitane decals on a blue frame before. That and the Système U stripes.

The 1988 Gitane catalogs show some bikes with Cycles Gitane decals.

_________________
Chas.
SF Bay Area, CA USA
==============
1984 Criterium
1969 TdF
1971 TdF
1974 TdF
1984 TdF x 2 Bikes
1970 SC
1971 SC
1972 SC
1984 SC
1984 Team Pro
1985 Professional
1990s Team Replica
View user's profile Send private message
 
PostPosted: Sun Jan 23, 2011 5:42 am Reply with quote
lofter
Joined: 05 Mar 2006
Posts: 1162
[/quote]

I've never seen those Cycles Gitane decals on a blue frame before. That and the Système U stripes.

quote]
if id ever get off my lazy ass and get those GITANE decals scanned everybody could put them on there blue frames if they want too
View user's profile Send private message
 
PostPosted: Sun Jan 23, 2011 5:53 am Reply with quote
Indurain
Joined: 01 Jun 2008
Posts: 11
Wisey wrote:
From (the few) I have seen internal photos of the Russian bikes that used a similar design, and they looked very heavy too. http://s4.postimage.org/rdz3uyas/4318716093_01640a9fbe.jpg[/img][/url]


The steerer is hollow = Not heavy, (titanium bolts to fasten the handlebar + aluminium nut to secure the steerer. Columbus sp tubes
View user's profile Send private message
 
PostPosted: Sun Jan 23, 2011 1:01 pm Reply with quote
Wisey
Joined: 19 May 2009
Posts: 631
Location: Brisbane, Australia
Cool. I was wondering. It would be a heck of a job to braze that thing into the fork crown if it was solid.

_________________
Kind Regards,
Wisey

Delta Dreamin'
View user's profile Send private message
 
PostPosted: Mon Jan 24, 2011 7:18 am Reply with quote
sandranian
Site Admin
Joined: 27 Feb 2006
Posts: 2701
Location: Southern California
Gtane wrote:
Here's a really nice close-up of a Delta, being carried by Fignon. Notice the Delta brake on the rear and sidepull on the front.

http://tinyurl.com/49d4fx3

Tim


Those are the Gitane decals that I want! Someone make those up, PLEASE!!!

_________________
Stephan Andranian
Costa Mesa, CA
www.gitaneusa.com
View user's profile Send private message Visit poster's website
Gitane Delta - Origins of the Aerodynamic TT bicycle 
  gitaneusa.com Forum Index » Vintage Gitane
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
All times are GMT - 8 Hours  
Page 2 of 2  
Goto page Previous  1, 2
  
  
 Post new topic  Reply to topic  


Powered by phpBB © 2001-2004 phpBB Group
Designed for Trushkin.net | Themes Database.