What i didnt know was the main straight is 2 miles long and the brake markers are at 1.5miles in which an M5 pulled 183mph, now forgive me if i am wrong but Rod's top speed was acheived by going past the brake marker (due to big big bollocks ) so technically not 1.5 miles?

Trying to work out where the 1.5 miles comes from thats all...looks to me like 1.7 + miles? Is the timer set at 1.5 miles or does it move and are the speeds via that timer or gps incar?

Please clarify This is not meant to upset anyone either just trying to learn facts

 

i think (not 100% though) brunters is actully only 1.7 miles long ? so braking at 1.5 to stop for 1.7 ?

could be completely wrong but i thought it was 1.7

 

...jimbo i just read on the m5 board its actually 2 miles hence this post

 

hmm ok must be wrong but they also barrier off the last section as there is a great big plane now sat there

 

From Brunters website

At the heart of the 670 acre site is an impressive 4 mile circuit and an amazing 60m wide, 2 mile straight – one of the longest in the country.

.

 

yep your right 2m maybe brake at 1.7 dunno where i got that from


http://www.bruntingthorpe.com/

 

.....on the vmax day the timer was set at 1.5 miles, but all i hear on here is braking as late as poss to acheive the highest top speed if this is the case...its not 1.5 miles?

 

well people will use brunters differently depending on whether its an event(vmax) or a mag feature.

You cant assume everyone will have good enough brakes to stop from a top speed run at 1.7miles hence vmax does it at 1.5miles for safety

Suppose you can say, top speed including braking within 2miles as then that covers everyone.....or top speed at brunters, in which you can use the tarmac as you please.

Big concern about having the plane there as im gonna be stuck for distance on my run. Thats why i have been thinking about RAF woodbridge as recommended by Rod.

 

its quite scary coming up to that plane at speed, come at it at 175 and thought shit imagine 220 like that porshe

 

did anyone find any pictures of the crash, did it actually hit the plane?

 

Always had timing gear in the car when i have been at Brunters

Would like to do it again now i have the bigger turbo, sure it would hit 170mph now

Steve

 

did the porshce crash ?

 

Brunters was 2.1 miles long prior to the car park & bank being built at the bottom. Mine first ran there in 2002 & at that stage it was 1.7miles long cos I measured it, so dont lets argue about that. Its many years since it was 2 miles long.
Woodbridge is slightly shorter but safer cos it does have a run off area.

 

what are the rules and reg's there how do u go about using it?? Can u just turn up?? Top speed runs from a rolling start?

 

One of the Porsches crashed but not the fast one as i understand it.
Vmax starts 400metres or so down the back straight so they are getting 1/4 mile before the straight .

 

As your on here Rod, what would my theoretical top speed be with 205/40/17s, standard 2wd diff and T5 with a 7600rpm limit ?

Many Thanks

Steve

 

i heard it was one of the 9ff cars so id imagine in the context of it that it isnt exactly a slow porsche lol

Well they do gain that distance but theres only so fast you can go around that bottom corner so really apart from putting less strain on your drivetrain i dont think theres much to be gained.

 

It wouldnt matter if they started 10 miles before the main straight, you can only go round the corner at a certain speed

 

Ive told them that but they love wasteing time & effort .
http://www.youtube.com/watch?gl=GB&h...&v=Z4E9LaXUBCY

The master shows how it should be done.
http://www.youtube.com/watch?v=8hXNzf2kjqc

 

It's quoted as 2 miles, but as Rod correctly states it's nearer to 1.7 miles. Having said that there is generally some bollards (and occasionally parked cars) at the bottom further shortenning any runs. It's pot luck as to what you find when you go there.

The Porsche that crashed was the funky 9ff one and it went through the timing lights at 222mph (the same as the 9ff cabby) before crashing. I've seen the pics and it was a mess, although the cockpit and structure are all sound so it wasn't as massive a crash as the speed suggests.

Some people prefer to start their runs on the back straight and carry the speed round the corner, but I've found that it's quicker to start far back on the main straight purely because by the time you can get the hammer down (using the first method) you're already a fair way down the straight. Other mags have tested it too and found the same, so I'm not sure why VMAX do that as it adds an extra unneccessary element of danger into the mix!

 

183.2 mph
500bhp should pull it to that Speed.

 

whats with marks dodgy bracelet in the vid rod ?

looks like a bloody dart player lol

 

Thanks Dan glad you said the distance, Phil would im afaid not have believed me.
You are correct about the start the only reason we use the bend is to save on the clutch with a full bore launch. Saw Mike Rainbird set a Rwd record back in the day from a standing start .

 

So glad im out of this game, not seen the pictures but can imagine what it was like

 

What kind of motor is that at 0:57s?

 

that and the drivetrain, id imagine launching off down the straight in alot of 4wd cars would put alot of strain on there gearboxes, if you coming out of the corner in third gear id imagine the strain would be less than launching hard in 1st

 

I really wouldn't bank on Phil believing a word I say Rod!

 

Thanks for the reply

Its about 440bhp so what would you expect ?

Steve

 

cossie4i its really hard to say because your 440bhp is probably at the fly whereas rod is talking about 500bhp on the dyno....my guess is you'd see 175mph.

 

at the fly wheel and on dyno is the same ?

or am i missing something ?

 

I woud be happy with 170mph

Did 162.2mph on a T34.48 at Brunters, timed by Fast Ford

Steve

 

...yes you are missing alternator belt/ps belt and not as good exhaust etc..so you would lose approx 30bhp incar imo....+ most maps are backed off for incar arnt they the dyno is normally for that look at me figure.

 

i wouldnt say 30 hp, depends what dyno you have seen really, i can only speek of what i see at our place, exhaust the same size as car normally, maps same, alternator run, no p/s

but i agree, its not going to be exactly the same a small loss

 

No ignition or boost was taken out of my map after dyno

 

Um!! not at MAD.
I spy both PS & Alternator there Phil. Mark added Boost for 5th gear run, 2.2bar on the Dyno 2.5bar on the run.

 

Dave Moss ran 178 with 440bhp but i think that was one of lifes perfect runs & difficult to repeat, i guess Phil is about right at 175mph. Please understand you require 440 at the end of the run not just at the start & thats the hard part many unhappy faces there when their 190mph car runs a 177 it aint easy.

 

Kind of on topic, 253mph standing mile

http://www.youtube.com/watch?v=Uk9vMQRIp1E

Even the yanks are using Wizards of Nos.

Mark

 

It would be slower at Brunters . At 250 the last half mile would take less than 6 secs & the Bugger has to stop or hit a plane . Great achievement but has Power & Capacity to run those Speeds & then 7 miles to slow down. Rather like comparing Posh's tits with Jordons.

 

my engine builder is building an engine for an escort cosworth that is aiming to break 200mph at brunters, one of m.a.d. customers i think. 800-850 is the aim

 

As above, there is nowhere near 2 miles of useable space at brunters, more like 1.7 miles or so.