Pete McCluskey.
Lifetime Supporter
So have I and I reckon it would be easy in a 40 given enough room.
I wouldn't want to get the 355 covered in nasty salt.
Roll On Performance
- Thread starter William Quantrel
- Start date
I wouldn't want to get the 355 covered in nasty salt.
Pete McCluskey.
Lifetime Supporter
Yes mate that was very sad. Top blokes all.
So instead 197mph with 450bhp. You'd have to be an accountant or a lawyer to worry about that sort of detail in a cheery, offhand, incidental comment designed (I think) to steer people away from top speed discussion and toward a comparison of roll on performance.
BTW, Cliff I'm just poking.oke:
Think 200 in a 40 is dangerous? How about this - Ghost Rider - Hayabusa Turbo Wheelie (The Final Ride) - YouTube
(Warning, it might take a bit of effort to get past the absurdly Hollywood wrapping.)
Yeah yeah might (I have no evidence either way) have bigger sprocket etc I know, but it's still nuts.
His roll-on performance looks like it might be quite impressive.
Congrats Michael on post 22, on topic!
An amazing feat on this forum these days.
Life is for living, the rest is for lawyers.
Tim.
No worries Mate. Being an accountant, and a lawyer, I've been the butt of many jokes so I've got a thick skin!
"What do accountants use for birth control?"
"What?"
"Their personalities!"
haha.......
But seriously, having spent a good amount of time and money involved in a project getting a road car (Lotus V8 Esprit) to 200mph, I have a keen first hand appreciation for the dramatic difference in required hp between say 160 or 170 and 200. It's really a world of difference. Lots of guys get their supercar up to 150 on a public road somewhere and think "hey, that was easy, 200 shouldn't be that tough" then run out of road (or balls) and never get to test the theory. Lots of arm chair 200mph test pilots, in other words.
Right around 175-185 you hit a wall with most cars....an absolute wall. And if your car is putting out sub 500hp then I think you'll find that there's just no getting around it. Most of the time you'll run out of road first, but even with all the road in the world, getting to 190+ is like hitting the hoop from half court...it's extremely difficult. No doubt some of the Mark II cars got to 220 on the Mulsanne before they put a kink in but that's with a tuned 427. Reports I've seen suggest those engines were putting out around 550-560hp. That's a lot more than 400.
HOO-RA!
Tim, we have a passionate bunch of guys here. Who needs Viagra? Just send them over to the forum and let nature do the rest. :thumbsup:
Cliff, I must be more factual if not pedantic. Now I STAND corrected... the Gulf cars had 450 hp. Never though 50 hp would double as a nuclear bomb.
Next time I post I will have my CPA Sweetie edit it so you don't have to keep saying 'Serenity now". :laugh:
Why did you choose the Lotus? Use what ya got?
Okay guys, let us settle this 200 mph bee's nest once and for all. I have inquired about renting Nardo for the day but am $5 short, anyone wanna pitch in? :laugh:
Would a 500 hp GT40 out accelerate a 700 hp modern and heavy Supercar from a 60 mph roll to 180? Love to see one run with the boys from M6board.com or with the Russians - Dragtimes Info.
Tim, we have a passionate bunch of guys here. Who needs Viagra? Just send them over to the forum and let nature do the rest. :thumbsup:
Cliff, I must be more factual if not pedantic. Now I STAND corrected... the Gulf cars had 450 hp. Never though 50 hp would double as a nuclear bomb.
Next time I post I will have my CPA Sweetie edit it so you don't have to keep saying 'Serenity now". :laugh:
Why did you choose the Lotus? Use what ya got?
Okay guys, let us settle this 200 mph bee's nest once and for all. I have inquired about renting Nardo for the day but am $5 short, anyone wanna pitch in? :laugh:
Would a 500 hp GT40 out accelerate a 700 hp modern and heavy Supercar from a 60 mph roll to 180? Love to see one run with the boys from M6board.com or with the Russians - Dragtimes Info.
The air becomes more and more the problem as speeds get higher so hp wins at the top end I reckon. Given weights as stated previously I'd say it would be close at the bottom end of that speed range.
Easy fix if the GT loses though - more power, that's the easy part. Turbo's have made power problems a thing of the past. Turbo's on my 364 would make more power than I can see myself needing.
Tim.
Easy fix if the GT loses though - more power, that's the easy part. Turbo's have made power problems a thing of the past. Turbo's on my 364 would make more power than I can see myself needing.
Tim.
Mike
Lifetime Supporter
Oh, an Esprit, that explains it!
How did you keep the gearbox in it?
Tim.
That does explain a lot. That or just how amazing a pulley and tuned Ford GT is. Not even in the same ball park I assure you as the Lotus.
To the authors original question... I'll give one perspective in a few weeks after I've actually done it. The rest is uninformed guessing to varying degrees of uninformedness
I should clarify. I won't be attempting 180mph anytime soon but 60-130 maybe depending on how the car feels. Anyone who ran their dads sedan up to 110mph and felt the front end get light and begin to wander all over the road knows when speed begins to feel uncomfortable. I'll have no problem backing out of it if the GT40 doesn't feel good at 80mph let alone 180mph. The GT felt solid as a rock at 180 and it got there easy I assure you.
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As mentioned in my other post
http://www.gt40s.com/forum/gt40-tech-chassis-brakes-tires-wheels/35038-gt40-highspeed-behaviour.html
i did a GPD verified 181 mph.
It was at around 2.30h AM. so may be night vision blurred the feel for speed. Other than that it was a pretty easy to do thing and required nothing else ( i still fitted in my seat quite well)
JUST PRESS THE PEDAL TO THE METAL.
Car behaved very nice. In terms of roll on performance it just accelerated until it hit the revlimiter at 7200 RPM. As my engine is further developing power after that (im just not using it, because it is pretty hard on the valve train and realy not needed on the street, i assume that the car will do 190 mph and more without any flaws.
I realy pulled nice up to that speed and i did not feel like hitting a wall. Of course acceleration got slower at top speed but as this 181 where achieved without supporting winds or downhill, there is defenitely more to come. So my ressume is that 500 HP put you over 180 mph defenitely.
Putting your gearing where the power is ( not the torque) of course helps. With the wrong gearing ratios ( in other words most if the times to long, if to short no discussion about top speed needed at all) it is difficult to fight the air.
TOM
http://www.gt40s.com/forum/gt40-tech-chassis-brakes-tires-wheels/35038-gt40-highspeed-behaviour.html
i did a GPD verified 181 mph.
It was at around 2.30h AM. so may be night vision blurred the feel for speed. Other than that it was a pretty easy to do thing and required nothing else ( i still fitted in my seat quite well)
JUST PRESS THE PEDAL TO THE METAL.
Car behaved very nice. In terms of roll on performance it just accelerated until it hit the revlimiter at 7200 RPM. As my engine is further developing power after that (im just not using it, because it is pretty hard on the valve train and realy not needed on the street, i assume that the car will do 190 mph and more without any flaws.
I realy pulled nice up to that speed and i did not feel like hitting a wall. Of course acceleration got slower at top speed but as this 181 where achieved without supporting winds or downhill, there is defenitely more to come. So my ressume is that 500 HP put you over 180 mph defenitely.
Putting your gearing where the power is ( not the torque) of course helps. With the wrong gearing ratios ( in other words most if the times to long, if to short no discussion about top speed needed at all) it is difficult to fight the air.
TOM
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I've said it before, and I'll say it again.
Bondurant hit 212 on the Mulsanne in a MkI with a 351W in 1965. I will bet that the 351W in that car put out 425-450HP.
The Gulf MkIBs supposedly could hit 210-211 with 425HP.
Ian
Hi William, no worries, understood.
Yup, it was a run-what-ya-got situation. Lotus V8tt seemed like a good platform for getting to 200mph, and eventually it was. With more boost and various other engine tweaks she put out over 500hp at WOT at around 7,250rpm. Gearing (replaced with a good ZF) was sorted to take advantage of peak hp/rpm. ZF blew up once, and eventually we had to take off all the mirrors, windshield wipers, tape seams, etc. 203 with a 4mph tail wind. We drew some inspiration from a project undertaken by some other folks to get a 4-banger Lotus to 200+ (didn't make it...). It was a fun project. I now have no desire to get much more above about 100!
George
CURRENTLY BANNED
Will
Being so full of experience and all, dont you think that question is a little retarded? I mean, I asked similar questions and got crucified by you to turn the page over and see you posting similar questions to mine... how lame.
Either way, I did like the question. At least you wont get trolled for asking it. So thanks for it.
Michael - I do suggest you stop abusing me directly/indirectly, is your family life that retarded that you have nothing else to do than to vent your frustrations out on me who had nothing to do with the OP question? Sad indeed.
Being so full of experience and all, dont you think that question is a little retarded? I mean, I asked similar questions and got crucified by you to turn the page over and see you posting similar questions to mine... how lame.
Either way, I did like the question. At least you wont get trolled for asking it. So thanks for it.
Michael - I do suggest you stop abusing me directly/indirectly, is your family life that retarded that you have nothing else to do than to vent your frustrations out on me who had nothing to do with the OP question? Sad indeed.
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Are you talking to me? Let me set you straight. My name is not Will. Never has been and never will be. Got it?
Next, typically this can be used as a nickname but used only by friends. You are not my friend. Never will be. Got it?
You take a liberty by addressing me in this rude and disrespectful manner and a liberty or you have not earned. You have zero respect, etiquette, manners and maturity. You do not know right from wrong. You don't know the first about the first thing being the first thing.
Don't ever address me again - ever. Got it? This is a rhetorical question. Nod to yourself in silence, "I got it."
Agreed Tim. I don't care for people muddying up a thread that has proven to be valuable - at least to me.
I suppose the best way measure roll on performance with a vehicle like the GT40, with its slippery aerodynamics and high power to weight ratio, is to time the 60-150 or whatever speeds are selected.
Doing this on a track can be dangerous with traffic and on the street it is irresponsible. However, there could be a solution.
Autobahn.
I know Tom has ran his RCR (530 hp) out to 181 mph. I wonder if he is open to timing some roll ons? We can then compare it to a Ford GT, 911 Turbo, etc.. of which I am sure these times can be located on the net.
30-120
40-140
50-150
60-180
60-80 passing roll on. Probably 1.5 seconds with Tom's set up.
Not sure if Tom has a timing feature with in his GPS to record such roll ons.
I suppose the best way measure roll on performance with a vehicle like the GT40, with its slippery aerodynamics and high power to weight ratio, is to time the 60-150 or whatever speeds are selected.
Doing this on a track can be dangerous with traffic and on the street it is irresponsible. However, there could be a solution.
Autobahn.
I know Tom has ran his RCR (530 hp) out to 181 mph. I wonder if he is open to timing some roll ons? We can then compare it to a Ford GT, 911 Turbo, etc.. of which I am sure these times can be located on the net.
30-120
40-140
50-150
60-180
60-80 passing roll on. Probably 1.5 seconds with Tom's set up.
Not sure if Tom has a timing feature with in his GPS to record such roll ons.
George
CURRENTLY BANNED
Yeah Yeah Will
Look in the mirror first and take your own advice before pointing the finger at what you are guilty of. When do you think you earned the right or were at liberty to reply to my threads with abuse and ridicule because what I had asked was not what YOU think should have been asked? Right, typical hypocrite, throwing stones out of a glass house... yep I got it.
Btw - RULES
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If Will is not your name, I suggest you find a new forum given the above.
Look in the mirror first and take your own advice before pointing the finger at what you are guilty of. When do you think you earned the right or were at liberty to reply to my threads with abuse and ridicule because what I had asked was not what YOU think should have been asked? Right, typical hypocrite, throwing stones out of a glass house... yep I got it.
Btw - RULES
2. Use Your Real Name: If you have signed up with some sort of “handle” go to your User Control Panel (User CP link in the menu bar) and change your Public Name under “Edit Your Details” to your real name. GT40s.com does not support user handles. We wish to know who we’re talking to and who is accountable for their posts on the forum.<?XML:NAMESPACE PREFIX = O /><O
></O> And no, we're not bending the rules for you. If you don't like rule number two then stay away from GT40s.com. There are plenty of other forums to join.If Will is not your name, I suggest you find a new forum given the above.
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Could do this, but not sure when. my GPS has no timing provision, but i do have some old school stopwatches.
TOM
Pat
Supporter
You need A LOT of room to move a GT40 over 150. LeMans gear ratios would be quite a handful in neighborhood traffic. The other issue that hasn't been discussed is that the technology to get you to 150 plus is often not pared with the capability to slow it down. Braking from 150 plus is very different than braking from 120. I'd be cautious on getting on the autobahn or interstate and "letting her rip" instead, save it for a track day someplace. Unless you've had some seat time working your car down from the speeds we're talking about, you may find yourself wadded into a ball when you have more speed than clear road.
Ian Anderson
Lifetime Supporter
Tom
How about doing a vidoe of your GPS machine as you drive?
May not be 100% accurate but would give a good approximation and you can "stop watch" it on play back
Cheers
Ian
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