Can the top speed be roughly calculated over that distance with a known weight, drag coefficient, weight, power, gearing etc?

 

Yes, Rod can

 

That car did 255 in 1 mile. That would give him 0.7 miles to slow down. Ok he had the luxury of not having to stop quickly so didn't but i'm sure he could. Just 1G braking would slow it down enough to turn.

 

That .7 mile would take 9.8 secs at 255mph.
During testing a Veyron was timed breaking from 250 in almost exactly 10secs & this with the aid of a rear spoiler that changes angle to act as an air brake something that Ford didnt have.
I dont say things even in jest if i havent done the calcs .

 

I wouldn't have questioned it without doing the calcs myself.

I used G force in my post because thats something thats easy to work with when talking accel and deaccel.

If he put the brakes on he wouldn't be doing 255mph for very long. If his brakes failed completely as you say he'd probably hit the plane in about 8 seconds or so, (as you'd still slow down due to drag etc)

I think you forgot that he's slowing down. Lets assume after half a mile of braking he'd be doing 120mph, that would mean he'd have 6 seconds to do the next 0.2 miles.

 

Youre right . Calcs are great things when you get them wrong .

 

Its ok, blame it on the age PM on its way to you also.

 

I'm hoping to get down to brunters in the summer. Have a good old blat in the escort. Will not be expecting anything impressive though!

I was lucky enough to befriend a young man called chris earlier this year, just so happens his dad owns brunters! score!

 

So it took you 3 hours to have an arguement over who was right and who was wrong?

 

I should think they were busy doing other things for most of that 3 hours, like driving the car and socialising and all the other things people do on a top speed day, you have to remember that back then they were only in it for a bit of fun at the time, Rod didnt realise he was going to beat your car before the day as it was only his runabout road car at that point in time so he didnt expect to have accidently built the fastest sierra cosworth in the world without even trying

 

This was Bruce at the time, and he was more competitive then, than Rod is NOW .

Rod was just a spectator back then - I think the bug bit .

 

for me then

 

I thought the fact that they spent an additional three hours trying to beat my speed was sufficient evidence of how serious they were .

 

...to me rodney seems very dis interested in this whole game and cars for that matter...he told me my prioritys for cars was a get a grip situation...yet he has a shonky taxi he has spent more than my house/cars/alcohol put together now that is get a grip lol

 

Its a top speed day, if you enjoy doing top speed runs and trying to develop your car, it makes sense to be there all day wether you have someone to beat or not I guess if there are still changes you can make on the day (like winding the boost up or tweaking the fuelling or whatever)

 

Rod's attitude, as he has mentioned on here many times, is that his family time comes first, but that in his free time he is happy to spend money he can easily afford to spend on his car as its his hobby.
He is in a fortunate position of having more time and money free than most of us, so a car that to some people on here would be a massive commitment, is less so to him.

 

Oh ! they were serious alright.
The problem with the bar/psi only surfaced at the end of the day. Mark was a psi man & Brucies gauge was talking some strange bar nonsense at the time. I was not involved, Bruce was the main man I was just another of Marks customers. I heard 37psi & 2.3bar talked about I thought that aint right. It only needed the one run once that was sorted.

 

You're forgetting I have the memory of an elephant . Don't forget the small matter of one of you acting as the brake marker as well .

 

Still only needed one run though Mike - once boost was corrected. Doesn't matter who was the brake marker or where they stood.

What boost were you running that day and could you have run more?

 

...when i had his saff it was holding 2.2bar i beleive.

 

Having said that there's something to be said for quitting while you're ahead! It's like the 'one last lap' scenario when you bin it on the last lap!

 

Lmao!

I certainly no that one better than most

 

*removed as per request*

 

That was me . But i had returned to the Top as the day went on because to brake later would have seen a death . Bruce didnt need a Marker once he had the correct Power.