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Posted: Wed Jan 19, 2011 2:48 pm |
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sandranian |
Site Admin |
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Joined: 27 Feb 2006 |
Posts: 2701 |
Location: Southern California |
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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? |
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Posted: Wed Jan 19, 2011 3:02 pm |
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Wisey |
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Joined: 19 May 2009 |
Posts: 631 |
Location: Brisbane, Australia |
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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.
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_________________ Kind Regards,
Wisey
Delta Dreamin' |
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Posted: Wed Jan 19, 2011 11:01 pm |
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verktyg |
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Joined: 14 Jan 2007 |
Posts: 2814 |
Location: SF Bay Area |
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Wisey wrote: |
I have seen internal photos of the Russian bikes that used a similar design, and they looked very heavy too.
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что является этим (chto eto takoe) WHAT is that? |
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_________________ Chas.
SF Bay Area, CA USA
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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 |
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Posted: Thu Jan 20, 2011 1:43 am |
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Gtane |
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Joined: 14 Sep 2007 |
Posts: 681 |
Location: UK |
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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 |
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_________________ Everything has a cycle |
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Posted: Thu Jan 20, 2011 2:10 am |
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Wisey |
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Joined: 19 May 2009 |
Posts: 631 |
Location: Brisbane, Australia |
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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.
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_________________ Kind Regards,
Wisey
Delta Dreamin' |
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Posted: Sat Jan 22, 2011 10:26 am |
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Gtane |
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Joined: 14 Sep 2007 |
Posts: 681 |
Location: UK |
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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 |
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_________________ Everything has a cycle |
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Posted: Sat Jan 22, 2011 11:58 am |
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verktyg |
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Joined: 14 Jan 2007 |
Posts: 2814 |
Location: SF Bay Area |
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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. |
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_________________ 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 |
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Posted: Sun Jan 23, 2011 5:42 am |
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lofter |
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Joined: 05 Mar 2006 |
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[/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 |
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Posted: Sun Jan 23, 2011 5:53 am |
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Indurain |
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Joined: 01 Jun 2008 |
Posts: 11 |
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The steerer is hollow = Not heavy, (titanium bolts to fasten the handlebar + aluminium nut to secure the steerer. Columbus sp tubes |
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Posted: Sun Jan 23, 2011 1:01 pm |
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Wisey |
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Joined: 19 May 2009 |
Posts: 631 |
Location: Brisbane, Australia |
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Cool. I was wondering. It would be a heck of a job to braze that thing into the fork crown if it was solid. |
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_________________ Kind Regards,
Wisey
Delta Dreamin' |
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Posted: Mon Jan 24, 2011 7:18 am |
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sandranian |
Site Admin |
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Joined: 27 Feb 2006 |
Posts: 2701 |
Location: Southern California |
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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!!! |
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