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-   Kirkham Motorsports (http://www.clubcobra.com/forums/kirkham-motorsports/)
-   -   Kirkham at Bonneville Salt Flats (http://www.clubcobra.com/forums/kirkham-motorsports/91479-kirkham-bonneville-salt-flats.html)

Hexnut72 09-23-2008 02:31 PM
Top Gear Guys at Bonneville
 
Link to article at Jalopnik with pics of the Kirkham and some celebrities:

http://jalopnik.com/5053075/top-gear...-caps#c7902704

saltytri 09-23-2008 07:10 PM
WoooHooo Corey! I'll bet she's the only kid on the block who's driven 130mph on the Salt Flats! If I had any pride at all, I wouldn't admit that she outdrove me at the track day last year.

Moto One 09-23-2008 07:36 PM
Hi Tom,

I did get to see you make your runs, we were over on the long corse waiting our turn (Lessman Racing Streamliner running on CNG). Roger was able to run 311+ a bit Thursday,and were going to make our back up run on Friday morning, but discovered a burn piston on warm up Friday... I also saw you pitted on Friday morning as we were loading up to leave...(Red Z06) and our Red Dodge with the trailer. By the way we are using a Ford motor in the Streamliner.

Mark.

Now that your in the 130 club, add a four point bar, and do the 150 club next year.

Tom Kirkham 09-23-2008 10:40 PM
Quote:
Originally Posted by Moto One (Post 882762)
Now that your in the 130 club, add a four point bar, and do the 150 club next year.
Mark,

That is one of the plans for next year...

Badger 09-24-2008 01:04 AM
Way to go Tom....car looks lovely! don't forget to wash thoroghly when you get home or it'll just be a small pile of aluminum oxide in the morning! :0) Badger

kris-kincaid 09-24-2008 01:58 AM
Tom, still no video?!? ;)

Good job, looks like fun.

speed220mph 09-24-2008 06:20 AM
Quote:
Originally Posted by Tom Kirkham (Post 881126)
Some reflections:

For me driving on the salt was a lot like driving on hard pack snow.

Do to the rules limiting the tire requiring a speed rated tire, with a maximum width of 10 inches, and our desire to maintain the original look, we ran Avon 225/65-15 front and 245/60-15 rear. They worked great.

Bonneville is a truly must do experience before you die.
Tom
It is an experience alright, especially when you spin at over 200 mph. Due to the shortage of tires back when I did my record runs we were allowed to run the best Michelins. Found out real quick when the tread separated and I spun through the lights at 210 mph why race tires should be used.

Hard packed snow, well not quite that slippery. We would leave black marks when leaving the line. But when you're under the car and a chunk of it falls off into your eyes you know it's not snow . . . ouch.

How about replacing that barn door of a windshield with a short race-type windscreen? That should reduce the aero drag a bit. A LeMans roof would help, too. That "wall of air" is hard to overcome regardless of horsepower. Do you have a Coupe on the drawing board?:LOL:

John A. Simpson 09-24-2008 09:16 AM
Way to go Tom, could you run a bar forward like on the 289 cars as an addition to your SC bar and meet the intent of the rules?

Tom Kirkham 09-24-2008 09:27 AM
Quote:
Originally Posted by Badger (Post 882864)
Way to go Tom....car looks lovely! don't forget to wash thoroghly when you get home or it'll just be a small pile of aluminum oxide in the morning! :0) Badger
It took us forever to clean the salt off.

Tom Kirkham 09-24-2008 09:31 AM
Quote:
Originally Posted by John A. Simpson (Post 882947)
could you run a bar forward like on the 289 cars as an addition to your SC bar and meet the intent of the rules?
Yes, but I hate (just get in the passenger seat and you will know why) the forward braced roll bar. I suspect we will just run a full width bar.

Doug I 09-24-2008 09:36 AM
so you'll be taking passengers for 150mph rides ? :3DSMILE:

cooooooooooooooooooooool :cool:

I'll put up with the forward bar (it'll be something to hang onto :) )

do we need to pay for the gas ? :3DSMILE:

Tom Kirkham 09-24-2008 09:40 AM
Quote:
Originally Posted by speed220mph (Post 882913)
Tom
It is an experience alright, especially when you spin at over 200 mph. Due to the shortage of tires back when I did my record runs we were allowed to run the best Michelins. Found out real quick when the tread separated and I spun through the lights at 210 mph why race tires should be used.

Hard packed snow, well not quite that slippery. We would leave black marks when leaving the line. But when you're under the car and a chunk of it falls off into your eyes you know it's not snow . . . ouch.

How about replacing that barn door of a windshield with a short race-type windscreen? That should reduce the aero drag a bit. A LeMans roof would help, too. That "wall of air" is hard to overcome regardless of horsepower. Do you have a Coupe on the drawing board?:LOL:
I agree the salt is not quite as slippery as snow. I guess it is more like a fresh groomed dirt road. Also when you clean up the car you know it is not snow. It really dries out your hands.

My understanding is the 130 club the car is supposed to be street legal. A LeMans roof would of course help. Hmmm, I think I have one.:)

Yes, we have a Coupe on the drawing board...We will probably have to talk with Badger to get some pointers on how they ran theirs...

Dominik 12-29-2008 11:48 PM
Drag reduction
 
You need about 750Hp with hardtop to go 220mph (580Hp for 200mph). Are you allowed to use a hardtop? Or a single racing screen?

The single racing screen reduces frontal area from about 16.5 sqft to 12sqft.
I am sure you can confirm frontal area looking at some of your CAD files.

Remember, the car tends to lift at speed and increases frontal area and aerodynamic drag.
Keep it down and you gain.

Dom


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