Brunters & top speed runs.
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From: Kent
Brunters & top speed runs.
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
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
Last edited by Ima Racing; 20-03-2010 at 05:23 PM.
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From: stoke-on-trent
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.
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.
Last edited by turbotoaster; 20-03-2010 at 05:34 PM.
#9
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.
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.
#13
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.
Woodbridge is slightly shorter but safer cos it does have a run off area.
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From: stoke-on-trent
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.
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.
#19
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
#20
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!
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!
#21
#23
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!
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!
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 .
#24
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.
So glad im out of this game, not seen the pictures but can imagine what it was like
#25
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From: stoke-on-trent
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
#28
Its about 440bhp so what would you expect ?
Steve
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#32
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From: Kent
...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.
#33
but i agree, its not going to be exactly the same a small loss
#34
No ignition or boost was taken out of my map after dyno
#35
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.
#36
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.
#37
Kind of on topic, 253mph standing mile
http://www.youtube.com/watch?v=Uk9vMQRIp1E
Even the yanks are using Wizards of Nos.
Mark
http://www.youtube.com/watch?v=Uk9vMQRIp1E
Even the yanks are using Wizards of Nos.
Mark
#38
Kind of on topic, 253mph standing mile
http://www.youtube.com/watch?v=Uk9vMQRIp1E
Even the yanks are using Wizards of Nos.
Mark
http://www.youtube.com/watch?v=Uk9vMQRIp1E
Even the yanks are using Wizards of Nos.
Mark