Cristel993

I have the opportunity to take my car on a runway at the weekend.

The runway is 1.15 miles long and according to factory data I should be able to reach 124mph in around 20 seconds from a standing start.

What distance will I have covered in that amount of time and at what speed should I start breaking at to get down to around 20mph within the length of the runway?

I don't have a dyno sheet for my car yet, but it's done 47k miles and has been serviced religiously.

This is the event for those who are interested.

http://www.wingsandwheels.net

I can't wait to see the Vulcan flying again....something I haven't experienced for 20 years!

Sam

johnsjmc

I read somewhere that the flying mile record for a normally aspirated 996 is about 150 mph. I can,t remember the physics formulas required but I would think you should see 125 well before the 1/2 way point. These cars can stop faster than they accelerate so whatever speed reached by 1/2 way should be a safe stop point with some extra room just in case.

Rinty

Ah, the Iron Overcast...

Cristel993

....or The Tin Triangle!

The only one still airworthy (XH558) has been fully restored and supported by commercial sponsorship and charitable donations. Incredible dedication and commitment!!!!

timothymoffat

I'm going to take a shot in the dark and say low to mid 130s before braking. Standing KM (.621 mile) is ~24-25 seconds @ about 130, should be able to keep the hammer down fo a bit longer hence my guess.

NP993

This is like a question on the SAT's. My head hurts. I choose "C".

Mark in Baltimore

LOL.

Toga

Oh my god you remind me that story of the young dudes who ran their father's M5 on the Florida runway (the one where Travolta has his villa). They didn't thing that a runway had an end and they didn't even brake and flew to a tree.
Take care Sam!!

jscott82

What kind of brakes/pads and how big are your *********???

JimPA

I got multiple runs on a private (rather bumpy) runway a few years ago with my '98 S coupe. I think the runway was about a mile long and I reached 125. There were no distance markings or references to use as braking points. Perhaps I could have gone a few mph higher but I was not inclined to create a huge cloud of dust or any other problems caused by running off the end of the paved area. I recall that some newer and high powered 911s were in the high 130s.

mr_bock

Can you get a good running start from the taxiway? I read about another FL runway event where the goal is to break 200 mph driving supercars. They mark off 'suggested' brakeing zone.

Make sure your brakes are good and your ***** are tight.

Paul M

Another similar event here in Texas:

http://www.texasmile.net/

One of the guys here at the office did a 178mph run in his 'vette last year.

http://www.texasmile.net/video.php

This should give you some idea of what speeds you should be aiming for:

http://www.texasmile.net/filecabinet...s_vehicles.pdf

Cristel993

My brakes are tiny and my ********* are even smaller. I've not tried using pads yet, will take a look in the bathroom cabinet.......

(Just had new front discs, plates and pads - standard C2 spec)

Cristel993

Thanks Timothy, that looks good to me as an estimate.....would be happy with 130 and stopping safely.

Someone said to me "iirc from school days, for constant acceleration 'a', the distance travelled:

s = 0.5 x a x t x t"

I had to have a sleep after I heard that.....

The runway is the same one that Top Gear use for their V-max and acceleration tests. The circuit you see the show use (Stig, star in resonably priced car etc.) runs around the outside of the runway. Aerospace manufacturers use the runway for testing too - this being it's main purpose. Am sure they will have braking markers as it's an official event. Really appreciate the advice though as I've not taken a car on a runway before and I understand the perspective can be really odd with a 45 meter width road to play with!

Sounds like a great experience and definately a fun challenge!

My ***** will certainly be tight at on the start line with 3,000 people watching me screw up my clutch control on the start line.....not sure what will look worse, riding the clutch or stalling!

Thanks for the link Paul, will check it out.

eloyex

you need a "cojones kit" ...