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 1Likes
02-13-2014, 04:54 PM
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CC Member
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Join Date: Feb 2008
Cobra Make, Engine: Shell Valley
Posts: 136
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Not Ranked
How many G's would a Cobra pull?
What would the stock, straight axle 9" pull, and a newer model with an IRS, and coilovers?
I'm looking for an approx number as there are too many variables.
__________________
You can put a chebby engine into a Ford body, but it will NEVER be a chevrolet. It also shows you're ignorant, and lack imagination, as in its been done to death as in its not an original idea.
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02-13-2014, 05:21 PM
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CC Member/Contributor
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Join Date: Feb 2000
Location: Greenville,
SC
Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, 65 Sunbeam Tiger, mystery Ford powered 2dr convertible
Posts: 12,703
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Not Ranked
Quote:
Originally Posted by mtrain2000
What would the stock, straight axle 9" pull, and a newer model with an IRS, and coilovers?
I'm looking for an approx number as there are too many variables.
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No original Cobra came stock with a 9" rear, sorry.
As for the rest, you would need to be quite specific as to what tires, shocks, springs, and suspension set up you were using.
Bill S.
__________________
Instead of being part of the problem, be part of a successful solution.
First time Cobra buyers-READ THIS
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02-13-2014, 05:40 PM
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Senior Club Cobra Member
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Join Date: Jan 2005
Location: saratoga,
ca
Cobra Make, Engine: Kirkham #185, Shelby Alloy 482; sold
Posts: 1,190
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Not Ranked
0-60 in 2.5 seconds is about 1G
0-60 in 4 seconds is about .7g's
__________________
Dave
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02-13-2014, 06:07 PM
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CC Member
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Join Date: Feb 2002
Location: Dadeville,
AL
Cobra Make, Engine: Sold my EM.
Posts: 2,459
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Not Ranked
In theory it would be difficult for any car not running exceptionally sticky tires to pull more than 1.0 g without aerodynamic down force. My Cobra has no down force.
__________________
Tommy
Cheetah tribute completed 2021 (TommysCars.Weebly.com)
Previously owned EM Cobra
"Never attribute to malice that which is adequately explained by stupidity." - Hanlon's Razor
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02-13-2014, 06:08 PM
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CC Member
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Join Date: Feb 2008
Cobra Make, Engine: Shell Valley
Posts: 136
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Not Ranked
Quote:
Originally Posted by 4pipes
0-60 in 2.5 seconds is about 1G
0-60 in 4 seconds is about .7g's
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Lol, I was speaking about cornering....
Like I said its a very subjective question as wheels/tires will make lots of difference, and the type of springs, shocks, sway bars, etc.
I was just curious at how well this thing handles corners?
Also, I was speaking about the big block cars..........
__________________
You can put a chebby engine into a Ford body, but it will NEVER be a chevrolet. It also shows you're ignorant, and lack imagination, as in its been done to death as in its not an original idea.
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02-13-2014, 06:11 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,005
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Not Ranked
Quote:
Originally Posted by Tommy
In theory it would be difficult for any car not running exceptionally sticky tires to pull more than 1.0 g without aerodynamic down force. My Cobra has no down force.
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Well, for ERA cars... Track testing with stock BF Goodrich Comp TA's has given nearly 1G lateral acceleration and .95G braking performance. In December, 1991, Car and Driver measured 1.05G (lateral) using Hoosier tires. Optional Spax dampers are externally adjustable for both height and damping, allowing the builder to modify the E.R.A. 427SC's ride and handling characteristics to fit personal preference. Source: Click Here for the 427 Specifications |
02-13-2014, 06:48 PM
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CC Member
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Join Date: Apr 2007
Cobra Make, Engine:
Posts: 1,009
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Not Ranked
Cornering G's
Quote:
Originally Posted by mtrain2000
What would the stock, straight axle 9" pull, and a newer model with an IRS, and coilovers?
I'm looking for an approx number as there are too many variables.
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I have a PI System 2 in my Cobra and have seen 1.3 average cornering and peak of 1.5 with Hoosier A6's it is very hard to get over 1.5 without aero down load. |
02-13-2014, 07:29 PM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
Laterally maybe 1 G, if it was set up well. Otherwise out of your pocket (?) many 1000's of G's 
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way
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02-13-2014, 08:55 PM
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Senior Club Cobra Member
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Join Date: Jun 1999
Location: Fallbrook, CA USA,
CA
Cobra Make, Engine: Porsche 928 S4
Posts: 739
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Not Ranked
Quote:
Originally Posted by Cobra #3170
I have a PI System 2 in my Cobra and have seen 1.3 average cornering and peak of 1.5 with Hoosier A6's it is very hard to get over 1.5 without aero down load.
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Absolutely on the money. The JBL Comp chassis pulls close to those numbers with the Hoosier DOT R6 compound tires. Note: this is on 245/45/17 front and 315/35/17 rear at Willow during the week (green track).
During a race weekend these numbers will go up a bit to 1.3>5 steady state as the track becomes much stickier.
I have never seen any non-aero car do much better than these numbers on a flat track/corner.
And transient lateral G spikes are just for bragging. |
02-14-2014, 06:06 AM
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CC Member
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Join Date: Feb 2002
Location: Dadeville,
AL
Cobra Make, Engine: Sold my EM.
Posts: 2,459
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Not Ranked
How many g's would a Cobra pull? ..... Apparently enough to destroy part of my memory.
__________________
Tommy
Cheetah tribute completed 2021 (TommysCars.Weebly.com)
Previously owned EM Cobra
"Never attribute to malice that which is adequately explained by stupidity." - Hanlon's Razor
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02-14-2014, 06:09 AM
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CC Member
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Join Date: Dec 2004
Location: Kansas City,
KS
Cobra Make, Engine: jbl
Posts: 2,291
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Not Ranked
mine pulls 1g all day long, standing still.....vertically.
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02-14-2014, 10:10 AM
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CC Member
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Join Date: Sep 2002
Location: Phoenix,
AZ
Cobra Make, Engine: FFR: 302 w/aluminum heads, Edlebrock injection. Street car trim, no scoop, side pipes or rollbar.
Posts: 1,869
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Not Ranked
Mine pulled about 25G out of my pocket to build.
__________________
"Cobra-Cobra-bo-bobra, banana-fanna-fo-fobra, fe-fi-mo-mobra...Cobra!"
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02-14-2014, 10:32 AM
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CC Member
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Join Date: Feb 2006
Location: Gilroy,
CA
Cobra Make, Engine: SPF 2291, Whipple Blown & Injected 4V ModMotor
Posts: 2,727
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Not Ranked
The answer is pretty easy for your specific car but harder to answer for a Cobra in general.
To find the answer all you have to do is turn your steering wheel sharply while traveling at the (high) speed you want to evaluate and stand on your throttle. That's all there is to it! Your car will do the rest for you automatically.
Almost forgot, don't forget to turn on the driverside G-meter to get a first hand representation of the event documented. You will be impressed! It will take your breath away - occasionally, depending on how well you handle these sorts of events, a few other things as well.
Ed
__________________
Help them do what they would have done if they had known what they could do.
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02-14-2014, 10:35 AM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
I might add that mine has continued to pull "G's" for over 25 years
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way
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02-14-2014, 09:14 PM
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CC Member
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Join Date: Feb 2008
Cobra Make, Engine: Shell Valley
Posts: 136
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Not Ranked
Your all right about pulling G's out of pocket. I just pull a few for a hard top, and yes I know the rules....pic's will be comming as soon as I paint it to match the body.
__________________
You can put a chebby engine into a Ford body, but it will NEVER be a chevrolet. It also shows you're ignorant, and lack imagination, as in its been done to death as in its not an original idea.
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02-15-2014, 07:20 AM
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CC Member
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Join Date: Dec 2010
Location: Allen,
TX
Cobra Make, Engine: Werk77 289FIA
Posts: 1,295
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Not Ranked
Some guys even claim, it pulls G-Stings..... 
__________________
Scratch build 289 FIA see the Scratch builder forum on CC - sold
DRB GT40 MK1 red #49- sold
FF5 Mk4 #7733 302/T5/IRS - dark blue - sold
FF5 MK4 #7812 427/TKO/IRS - Guardsman Blue - sold
FF5 MK4 #8414 501/TKO600/48IDA Ollie the Dragon #91 - sold
FF5 Daytona Coupe 347/TKO/IRS Homage CSX2299 Viking Blue - sold
SPF 2063
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02-16-2014, 05:48 AM
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CC Member
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Join Date: Nov 2001
Location: Windham,,
Me
Cobra Make, Engine:
Posts: 1,590
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Not Ranked
The only thing my car needs besides four gumballs is a race oriented seat with high bolsters for a high lateral g-force. Even without that equipment these cars corner so hard it can hurt if done for a long time.
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02-16-2014, 07:01 AM
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CC Member
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Join Date: Dec 2004
Location: Kansas City,
KS
Cobra Make, Engine: jbl
Posts: 2,291
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Not Ranked
Quote:
Originally Posted by mdross1
The only thing my car needs besides four gumballs is a race oriented seat with high bolsters for a high lateral g-force. Even without that equipment these cars corner so hard it can hurt if done for a long time.
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kart racing we wore rib protectors, you bruise a rib and you're done for a while, they seem to take a while to heal. |
02-18-2014, 04:42 AM
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CC Member
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Join Date: Nov 2001
Location: Windham,,
Me
Cobra Make, Engine:
Posts: 1,590
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Not Ranked
Talked to a good friend who has raced Super Modified's for many years he suggested a seat for me and how to let it do it's job, he also scaled my suspension. Was somewhat surprised the secret is to learn to relax in the seat (Do Not Fight the G's) it will wear you out very quickly. Let the seats bolsters and belts hold you so you can focus on driving the car.
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02-18-2014, 06:39 AM
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CC Member
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Join Date: Dec 2010
Location: Allen,
TX
Cobra Make, Engine: Werk77 289FIA
Posts: 1,295
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Not Ranked
Quote:
Originally Posted by mdross1
Was somewhat surprised the secret is to learn to relax in the seat (Do Not Fight the G's) it will wear you out very quickly. Let the seats bolsters and belts hold you so you can focus on driving the car.
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Yep!
May the force be with you  - and not against you....
__________________
Scratch build 289 FIA see the Scratch builder forum on CC - sold
DRB GT40 MK1 red #49- sold
FF5 Mk4 #7733 302/T5/IRS - dark blue - sold
FF5 MK4 #7812 427/TKO/IRS - Guardsman Blue - sold
FF5 MK4 #8414 501/TKO600/48IDA Ollie the Dragon #91 - sold
FF5 Daytona Coupe 347/TKO/IRS Homage CSX2299 Viking Blue - sold
SPF 2063
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