S getting away quickly
Discussion
Nacnud said:
And there's a Tuscan, Cerbera and plenty of Griffs being given serious welly in this video
www.tvrcc-bristol.co.uk/downloads/video/Culdrose03w.WMV
That S gets off the line quick.
thought you lot would be interested (if you havent seen it before.
it only takes about 14 years to download too!
Driven right, a V8S is extremely hard to beat off the line. 64' times can go as low as 2.3 seconds on cold tyres, its extremely rare (I've never seen it yet) for the later and more powerful cars to match this. But the secret is in getting the launch just right, and knowing how to turn the trailing arm rear suspension to your advantage.
HarryW said:
If you control the initial axle tramp the old V8S gets away pretty much as quick as any other modern(ish) Tiv, not matter how big or powerful IMHE .
Harry
So what is trhe knack for getting off the line quickly?? My car will be being filmed and timed sometime soon and I wouldnt mind a few tips, mines a 92 V8S.
Cheers
Mike
V8Smith said:
If you control the initial axle tramp the old V8S gets away pretty much as quick as any other modern(ish) Tiv, not matter how big or powerful IMHE
Harry
So what is trhe knack for getting off the line quickly?? My car will be being filmed and timed sometime soon and I wouldnt mind a few tips, mines a 92 V8S.
Cheers
Mike
To be honest I find it intuative(sp?), I would not pretend to fully understan it. All I know is too much power too early and it will bounce/tramp
, side stepping the clutch is v bad and gets you no where IMHO. Feeding it in swiftly not too agressively for the first 1sec at around 2.5Krpm seems to work for me. Check the back posts, Peter H has posted his technique before now and is far more experienced than me as an ex sprint champion I would listen to his advice before mine 
. Not being too silly off the line, i.e. slight wheel spin, I can get the change up from 2nd to 3rd in about 5secs, which at 6krpm(ish
) is about 65mph 
, really need to use a AP22 peformance meter to learn exactly what I'm doing right and wrong though. Harry
Just done a quick search for PeterH's previous words of wisdom on this [url]here it is|www.pistonheads.com/gassing/topic.asp?t=55577&f=6&h=0&hw=wheel+spin[/url]
Harry
>> Edited by HarryW on Friday 6th February 11:30
Harry
>> Edited by HarryW on Friday 6th February 11:30
My description on the other thread covered launches in general. There are a couple of tricks which are specific to the S series though. The first one is to ride the clutch. That is, once you've got to the point where you want the clutch fully engaged, bring it up far enough to stop it slipping but no further. What this does is let the clutch act as a safety valve so when wheel tramp occurs the clutch slips and takes the snatch out of the transmission. You'll find if you're driving normally and get into wheel tramp, just feathering the clutch slightly will kill it stone dead. If you ride the clutch slightly off the line you stop the wheel tramp developing in the first place. I must emphasise though, this doesn't mean let the clutch slip (you will smoke the clutch very quickly if you keep doing this). Just keep a little weight on the clutch pedal while you're accelerating hard in conditions where tramp may occur, you'll soon get a feeling for how much weight you need.
The second tip is to wind up the transmission and rear suspension against the handbrake before you move off the line. This is the V8S secret weapon again the later twin wishbone cars. Where normally you'd bring in 75% of the acceleration immediately and then build in the rest as the weight settles onto the rear wheels, you get get the back of the car to squat and compress the springs just by pulling against the handbrake. Hold the handbrake on hard until the car starts to move and then release it. This dumps the weight transfer instantly onto the rear wheels so the traction is available instantly without waiting for the car to settle. With practice you can time this so you use the natural frequency of the rear suspension, so you start moving as the rear suspension becomes fully compressed. No need to sit there straining the clutch against the handbrake, which again will do the clutch no favours at all.
Must just point out here again that you're not allowed to use these techniques against me at a sprint!
The second tip is to wind up the transmission and rear suspension against the handbrake before you move off the line. This is the V8S secret weapon again the later twin wishbone cars. Where normally you'd bring in 75% of the acceleration immediately and then build in the rest as the weight settles onto the rear wheels, you get get the back of the car to squat and compress the springs just by pulling against the handbrake. Hold the handbrake on hard until the car starts to move and then release it. This dumps the weight transfer instantly onto the rear wheels so the traction is available instantly without waiting for the car to settle. With practice you can time this so you use the natural frequency of the rear suspension, so you start moving as the rear suspension becomes fully compressed. No need to sit there straining the clutch against the handbrake, which again will do the clutch no favours at all.
Must just point out here again that you're not allowed to use these techniques against me at a sprint!
Nacnud said:
And there's a Tuscan, Cerbera and plenty of Griffs being given serious welly in this video
<a href="http://www.tvrcc-bristol.co.uk/downloads/video/Culdrose03w.WMV">www.tvrcc-bristol.co.uk/downloads/video/Culdrose03w.WMV</a>
sadly:
TVRCC region website said:
9th Feb 2004 - I've had to remove the Bristol Region videos from this website as they have started getting so many hits that the TVRCC service provider is getting nervous. While it's nice to see so many people appreciating what the Bristol Region get up to, I'm not sure what I can do to work around this problem.
Suggestions on a postcard please....
M@H said:
And there's a Tuscan, Cerbera and plenty of Griffs being given serious welly in this video
<a href="http://www.tvrcc-bristol.co.uk/downloads/video/Culdrose03w.WMV"><a href="http://www.tvrcc-bristol.co.uk/downloads/video/Culdrose03w.WMV">www.tvrcc-bristol.co.uk/downloads/video/Culdrose03w.WMV</a></a>
sadly:
TVRCC region website said:
9th Feb 2004 - I've had to remove the Bristol Region videos from this website as they have started getting so many hits that the TVRCC service provider is getting nervous. While it's nice to see so many people appreciating what the Bristol Region get up to, I'm not sure what I can do to work around this problem.
Suggestions on a postcard please....
Its now been moved to Luca's sleepy-fish site here if you want to see it again, as have all of the ex Bristol chapter videos AFAIK.
Harry
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