Discussion
Not entirely sure your right there Madrod,even I can stop in less than half the distance available at Brunters,and, I think,if I were able to hit 210mph 
.....I would on the brakes the moment my front wheel hit the timeing beam.....Although, if one had brake problems...that bank, at the end, would launch you sommmmme distance...
...Craig.. Big `catch net` needed, for next V-Max.
..
.....I would on the brakes the moment my front wheel hit the timeing beam.....Although, if one had brake problems...that bank, at the end, would launch you sommmmme distance......Craig.. Big `catch net` needed, for next V-Max...markbe said:
Not entirely sure your right there Madrod,even I can stop in less than half the distance available at Brunters,and, I think,if I were able to hit 210mph
Not interested in timing beams only on how fast the car will go, At TV2005 for instance we hit the Limiter at 210.4mph (on our own Data Log) at 1.4miles & then came off the throttle & recorded 206.1 at the timing gate. I assumed Vmax would record what it says the Max Speed not a speed at a set distance. My car has a problem stopping from 210mph at Brunters & i would have to brake before 1.5miles im sure,im limited by max wheel diameter possible on the front of a Cossie, can run much larger on the rear. Big difference in stopping from 210 than even 200 let alone lesser speeds. Perhaps Vmax is not for me as like tv2005 it wont record what my car is capable of. A PITY.
madrod said:
Not entirely sure your right there Madrod,even I can stop in less than half the distance available at Brunters,and, I think,if I were able to hit 210mph
Not interested in timing beams only on how fast the car will go, At TV2005 for instance we hit the Limiter at 210.4mph (on our own Data Log) at 1.4miles & then came off the throttle & recorded 206.1 at the timing gate. I assumed Vmax would record what it says the Max Speed not a speed at a set distance. My car has a problem stopping from 210mph at Brunters & i would have to brake before 1.5miles im sure,im limited by max wheel diameter possible on the front of a Cossie, can run much larger on the rear. Big difference in stopping from 210 than even 200 let alone lesser speeds. Perhaps Vmax is not for me as like tv2005 it wont record what my car is capable of. A PITY.
I understand your problem, however, a number of runs, would surely bring to max mph, allowing enough distance to stop,and also, still attaining the highest speed of the day through the traps.It would also, furnish you with useful data, re braking distances for the future.
Re speed attained via GPS or similar systems,Craig is the only person who can answer that.
Regards Mark.
Just plug in a GPS data-logging system, I usually take mine to VMax and am happy to lend out. It takes about 20 seconds to fit to a car and logs speed from GPS and accelerometers every 1/100th of a second. I usually take a laptop to analyse on the spot, but the data-files can be easily copied and the software is free. Here's my 201mph run from the last VMax
As you can see it was accelerating hard at 201mph (actually adding 1.4mph per second).
Guy
As you can see it was accelerating hard at 201mph (actually adding 1.4mph per second).
Guy
GuyR said:
Just plug in a GPS data-logging system, I usually take mine to VMax and am happy to lend out. It takes about 20 seconds to fit to a car and logs speed from GPS and accelerometers every 1/100th of a second. I usually take a laptop to analyse on the spot, but the data-files can be easily copied and the software is free. Here's my 201mph run from the last VMax
As you can see it was accelerating hard at 201mph (actually adding 1.4mph per second).
Guy
Thank God you have arrived Guy. Thats the data most events give you, the software certainly will extract all the data time/Speed /Distance, when Datron do events a small ariel is placed on you car & full data can be recieved. They can even supply a small dash sctreen that gives actual speed as you go. Timing beams are for standing start events not Topspeed.
I also have Vbox GPS but if you wish to claim a new Topspeed record your rivals only accept the official event gear, thats why the Cosworth record is 206.1 & not 210.4.
Rod
ps. To possibly win your event is very nice , but in my eyes its a wasted run as it proves nowt only that your is Faster than the event allows which seems a bit silly.
Cant gear longer as my wheels are already 4" bigger than standard & i use a jag Diff which is a set ratio.
Why not get Guy to supply the gear & make that the official timing gear, if its of the correct accuracy, which getting to know Guy i suspect it is.
Rod
madrod said:
Thank God you have arrived Guy. Thats the data most events give you, the software certainly will extract all the data time/Speed /Distance, when Datron do events a small ariel is placed on you car & full data can be recieved. They can even supply a small dash sctreen that gives actual speed as you go. Timing beams are for standing start events not Topspeed.
I also have Vbox GPS but if you wish to claim a new Topspeed record your rivals only accept the official event gear, thats why the Cosworth record is 206.1 & not 210.4.
Rod
ps. To possibly win your event is very nice , but in my eyes its a wasted run as it proves nowt only that your is Faster than the event allows which seems a bit silly.
Cant gear longer as my wheels are already 4" bigger than standard & i use a jag Diff which is a set ratio.
Why not get Guy to supply the gear & make that the official timing gear, if its of the correct accuracy, which getting to know Guy i suspect it is.
Rod
Rod,
The GPS devices such as VBox and others should be considered legitimate indicators of speed, they are used for the tests at Nardo for Sport-Auto shootouts of high speed cars and are used by all car magazines and the Guinnness book of records. The problem with them is one of time, it takes time to set-up in each car and download the data. This is fine if it's a leisurely private session with only 5-10 cars, but at VMax there are usually 30 cars and we also run 2 cars side by side all the way down the runway through two timing beams. This is unique to VMax (as TV and TOTB etc all run one lane only for high speed). This gives a great chance to compare the cars at high speed (so we have videos of me and Adam in the Yellowbird side-by-side at 195mph for example).
Everyone on here knows that the speeds recorded at VMax are not the actual top speeds of the faster cars, since we lack the space to reach the true maximum, which is why all manufacturers test at Nardo or Ehra-Lession or other similar facilities, where there are longer straights and very high entry and exit speeds from and onto banking. This is just the best facility we have in the UK without breaking the law.
Having a beam means all the times are comparable and it also removes the 'balls/red mist' factor that would encourage late-braking. I always have no problem stopping even at 202mph and have considerable space left and I know that another second on the power would probablly result in a 204, another two seconds perhaps a 205 or 206, but fortunately the timing beam position takes away the need to 'risk it'. Thats why we've done 10 VMaxs now, each with 30+ cars and so far had no problems on the braking.
You will find we have plenty of room for braking and can easily work up to it on the day. If you don't want to hold top speed through the beam and backoff early then thats fine as well. The event is just for fun and to admire other great cars, there are no trophies, no prizes, no magazine coverage and no spectators - so everyone that goes just has a great relaxed time surrounded by a good selection of cars!
burriana said:
The event is just for fun and to admire other great cars, there are no trophies, no prizes, no magazine coverage and no spectators - so everyone that goes just has a great relaxed time surrounded by a good selection of cars!
Nicely put Guy
Totally agree if it aint fun dont do it.
Prob is im chasing records whilst having fun.I like the attitude of you guys its not as aggressively competative as normal & thats good. Will deffo enter your event if selected (please), but will pay to have official timing in the car on the day as well so problem solved.
markbe said:
Craig, am I allowed to `tail gate` a 200mph car along the runway, popping out just before the timing beams ? It will save me, an awfull lot of money,which I would have to spend otherwise on the engine.And,is possibly, the only way for me to hit the magic `GuyR speed`. 
You can tail me - if you can keep up......
GuyR said:
Craig, am I allowed to `tail gate` a 200mph car along the runway, popping out just before the timing beams ? It will save me, an awfull lot of money,which I would have to spend otherwise on the engine.And,is possibly, the only way for me to hit the magic `GuyR speed`.
You can tail me - if you can keep up......
Thank you Guy,please remember to remove both your wings,so as, not to disturb the airflow over my beautiful benz, we shall, of course wave courteously as we pass..
burriana said:
Elvington check noise limits, but at least they have a digital meter on the end of a 1/2 meter long 45 degree metal bracket so you know that it's consistent!
What, as opposed to some bird poking her meter up your chuff and asking what your engine revs to ? Very scientific as I recall !!
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