twisted frame by engine torque old legend?
Le Mans Master
Joined: Nov 2009
Posts: 6,882
Likes: 234
From: Bangkok, Thailand
Yep, Ken said that in the Demon I told you about that he couldn't see anything but sky for the first 400 feet, then after that it was just amazing how fast the timing towers were coming at him!
Maybe you should try mounting one under the front bumper with a slight downward angle.
Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
Yep, Ken said that in the Demon I told you about that he couldn't see anything but sky for the first 400 feet, then after that it was just amazing how fast the timing towers were coming at him!
Maybe you should try mounting one under the front bumper with a slight downward angle.
Maybe you should try mounting one under the front bumper with a slight downward angle.
Safety Car
Joined: Aug 2009
Posts: 3,752
Likes: 276
From: Melbourne, Victoria, Australia
Hi guys,i'm here with a questions about an old story i heard and i want go deeper on this:
Does the C4 frame twist under heavy pull by engine torque?
Some guys talk about the asymmetrical wiev of the rear with left side highier than right ...
Was there something in the frame that was underestimate during C4 developement ?
I'm here to collect data so let me know as much infos as you have about this stuff,thanks guy
Does the C4 frame twist under heavy pull by engine torque?
Some guys talk about the asymmetrical wiev of the rear with left side highier than right ...
Was there something in the frame that was underestimate during C4 developement ?
I'm here to collect data so let me know as much infos as you have about this stuff,thanks guy
they had put 898 hp and 772 lb-ft thru a C4They drove the sledgehammer to the track and back a true road going supercar
Lets not forget this was in 1988 !!! makes a 20 years newer car the Bugatti Veyron not look like such an improvement ...
Last edited by gerardvg; May 18, 2013 at 03:26 AM. Reason: More info
Racer
Joined: Aug 2012
Posts: 279
Likes: 2
From: Las Vegas Nevada
I always saw it on the recommended section on youtube, but for some reason skipped it. Great way to build confidence in a car's engineering.
Also great to hear that Lingenfelter admitted to having a slower car.
Race Director
Joined: Feb 2003
Posts: 11,672
Likes: 20
From: Lake Wylie SC
If I remember right, GM made 3 "mule" C4 Verts with the LT5 motor in them. They were trying to make a C4 Vert ZR1. They crushed 2 of them and 1 is somewhere out there. Maybe this was a legend, but lots of guys talked about it way back then. GM said the LT5 motor put too much flex on the frame and cancelled the concept. If you ask me, I think the insurance companies put pressure on GM.
Instructor
Joined: Apr 2013
Posts: 222
Likes: 3
From: Ottawa Ontario
So it might have been answered and by reading a lot it wont really do any damaging twists. now is there any difference if you are boosted and running with the targa off? do you think there would ever be any significant problems like it not going back on correctly if I hit boost a couple time with no top?
Thanks guys.
Thanks guys.
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Burning Brakes
Joined: Aug 2006
Posts: 1,061
Likes: 99
From: Seattle WA
So it might have been answered and by reading a lot it wont really do any damaging twists. now is there any difference if you are boosted and running with the targa off? do you think there would ever be any significant problems like it not going back on correctly if I hit boost a couple time with no top?
Thanks guys.
Thanks guys.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
They are not going to twist and not go back into shape
Look at the old Impalas that used the X frame. They twist like crazy but go right back where they belong. C4 structure is light yrs ahead.
If a car can handle well enough to pull close to a G on a skid pad its structure is probably plenty stout.
Look at the old Impalas that used the X frame. They twist like crazy but go right back where they belong. C4 structure is light yrs ahead.
If a car can handle well enough to pull close to a G on a skid pad its structure is probably plenty stout.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
No. That would not be a problem, IMO.
Team Owner
Joined: Aug 1999
Posts: 24,017
Likes: 634
St. Jude Donor '10
My CTTC was ~700lbft at the crank. Ran with the targa off no problem, but i wasn't launching from a dead stop on slicks either.
Thread Starter
Drifting
Joined: Aug 2010
Posts: 1,704
Likes: 8
i'm curious about what kind of stress (twisting force) put down on the frame a standard Dana 44 with batwing and a solid axle like the one Vette 383 is running under his beast...