Lotus Exige V10

[Dutch Elise]

I looked at this topic and couldn't resist looking at it on youtube

http://www.youtube.com/watch?v=L45p84k9D3M

Don't know if its the same car but sound real good and goes like lightning

[kambites]

Dutch Elise said:

I looked at this topic and couldn't resist looking at it on youtube

http://www.youtube.com/watch?v=L45p84k9D3M

Don't know if its the same car but sound real good and goes like lightning

Surely that's got to be fake?

[Dutch Elise]

kambites said:

Surely that's got to be fake?

hope its not and it's going to be a cheap kit

[GTRene]

lol, its fake indeed but a funny one

this one is real though...not a V10 it has to do with 2 legs less, its the Venom GT>>

http://www.youtube.com/watch?v=turV3v9RYeU

0 to 200km/h in under 8 sec
0 to 300km/h in under 14 sec
0 to 370km/h in a amazing 19.96 sec

[Scuffers]

GTRene said:

lol, its fake indeed but a funny one

this one is real though...not a V10 it has to do with 2 legs less, its the Venom GT>>

http://www.youtube.com/watch?v=turV3v9RYeU

0 to 200km/h in under 8 sec
0 to 300km/h in under 14 sec
0 to 370km/h in a amazing 19.96 sec

considering the cost/alleged hp, that seems quite slow?

this is a SC Honda car doing:

0 - 100km/h in 2.6 seconds.
0 - 160km/h in 5.1 seconds.
0 - 200km/h in 8.5 seconds.

(times taken from the datalog based on front wheel speed)

http://www.youtube.com/watch?v=Qiv-txPxWSo

[Scuffers]

TheLastPost said:

Now lets have a figure for the Honda engined car to 370km/h (230mph).

show me the race cct where you can do 230Mph?

it's even worse than chasing 1/4 mile times, almost pointless willy waving.

[GTRene]

that sounds very fast if proven also otherwise Simon, although when you look at that digital gps? dial then it does it in about 11sec to 200km/h, still very fast of course but if what you say is correct in just 8.5 sec that would be very, very fast.
in that video you showed the car flies by the other fast cars and sounds like it can do that again and again.
is it also short geared? guess that/your car is specially made for racing, light and powerful I guess more then 330hp maybe even 360<>380 or so?

of course from 200 to 300 or even higher in a 'very' short time, brings in lots of more power.
not that you need or would go that fast on normal roads but thats not the point they made.

[Scuffers]

TheLastPost said:

I could show you £20K's worth of bike-engined hillclimb single seater that would piss all over both the Honda S/C car and the Hennessey, 0-60, but what would that prove?

be interesting though...

what kind of 64" times do they make these days (long time since I have been to a sprint)

looking at the data, he did the first 64" in 1.557 sec's

[Scuffers]

GTRene said:

that sounds very fast if proven also otherwise Simon, although when you look at that digital gps? dial then it does it in about 11sec to 200km/h, still very fast of course but if what you say is correct in just 8.5 sec that would be very, very fast.

Gps is behind (sample rate not high enough) hence we use front wheels speed (12/turn at 50hz)

[DaveK-S1]

Scuffers

Anything sub - 2 secs is quick in hillclimb start terms , the quickest single seaters are around 1.8 - 2.0 sec depends on driver technique really, quickest i've ever seen was Willem Toet's Pilbeam 4.0 judd at Gurston which has a downhill start at 1.69 secs.

Some of the 4 wheel drive cars Nic Manns mannic beattie for example are awesome to watch launch for the sheer lack drama involved and how fast they translate traction into acceleration

Dave

[Scuffers]

are they 'real' though?

hell of a difference between 0.7 and 2+ for the same car/day etc?

[Scuffers]

TheLastPost said:

We could ask the same question of your datalogging data, particularly when the accelerometer on the youtube clip never registers more than 0.9g, and then only briefly, some way after the car had left the line. I assume you were using hall effect sensors, which are hardly the most reliable devices when there's so much electromagnetic noise around?

video data is GPS, it's usually very averaged and somewhat behind reality (fine over a lap as you gain what you loose at the end of a lap, but st for this stuff, also, typically it's own accuracy is reporting ~3-10M error)

I am using the wheel speed sensors for actual data, fronts are 12 pulse/turn on 1.822M rolling circumference (~152mm/pulse), this is than compared against the diff speed sensor to graph out wheelspin etc.

so, yes, potentially, I could be up to 152mm delayed in seeing the car actually move (depending on where the wheel is stationary vs. the sender)

[DaveK-S1]

TLP

Those examples are not correct , they must have been an anomoly in the timing on the day.

I know both drivers and as much as they would both like to do sub 1 sec 64ft times it simply isn't possible in the cars, despite sophisticated launch and traction systems fitted on both cars.

Whilst you have mentioned the 64ft times are of little importance, when the times as close as they have been separated by hundreths any time gained is useful.

Dave

[GhepardoGTS]

pthelazyjourno said:

kambites said:

Would the Boxster engine and gearbox fit in a standard wheel-base Elise? Is there enough clearance between the bulkhead and the axle-line?

Would be close. My uneducated bet is no. I don't think there would be much in it though - the engine in the Elise would be a lot further back (in an S1 at least, but there's a few inches for the exhaust manifold - so that's space that could be used by the engine.

http://www.seriouswheels.com/2000-2003/2003-Porsch...

Expensive lump though, and not that powerful for the money. Or known for its fantastic reliability. Plus the whole setup looks massive!

What you need is a nice K Series!!

Edited by pthelazyjourno on Thursday 29th November 12:17

Well this is purely a fantasy at the moment, but I've been thinking of it long before this, the Venom GT or the new V6 Exige. I'm not sure the Boxster engine will fit well within the width of the aluminum tub, but the axle line is irrelevent and I'd actually prefer a longer wheelbased car with that much performance.

The reason for the Boxster engine is many but the biggest ones being a flat, ultra low CofG configuration, and the sheer scale of the parts pool Porsche flat 6s have. You could source certain parts all the way up to a 911 GT3 RSR and some could be made to work. This is important if you want to keep the engine NA. The RUF CTR3 and 9FF also have some pretty elaborate tunes out of this configuration using a combination of Porsche racing parts and their own bespoke parts.

The Elise/Exige really are perfect midengine cars to tinker with because they are so simple. The Venom GT proves the extent of which is possible with unlimited funds. Combine that with a unique exterior body design which needs only 7 pieces of FRP or CF, you've got yourself a mini version of the Glickenhaus Ferrari P4/5 project. My absolute favorite design is the mega rare Alfa Romeo 33 Stradale Prototype with the dual headlamps. I'm no Jason Castroita and no way capable of modernizing it the way he did with the Ferrari P3, but I continue to imagine what it might look like.

I wish I could build a one-off supercar by myself for myself. Thats why I admire this V10 build so much...

Edited by GhepardoGTS on Friday 7th December 06:52

Edited by GhepardoGTS on Friday 7th December 07:01

[GhepardoGTS]

Sticking to the midengine car engine swap theme, here's a decent video of Ruf's CTR3. Fast forward to 3:20.

http://www.youtube.com/watch?v=-3SwllnSGB0

I thought the midengine configuration of the car meant that they start with a Boxster monocoque. Instead, they start with a 997 cabrio, chop the A pillars, fabricate unique bulkheads behind the occupants, then the engine mounts and everything are pretty much bespoke to the car. This can certainly be executed with an Elise.

Are you guys aware that the Elise/Exige lack any structural A pillar? I was surprised when I first knew about this but the A pillar is actually GRP. A very strong one nonetheless. The black plastic you see in the surface is all you get. No hidden structural A pillars underneath.

Edited by GhepardoGTS on Friday 7th December 07:12

Edited by GhepardoGTS on Friday 7th December 07:17

[k-ink]

It is not just about times. Installing a V10 adds a whole new dimension - supercar sound. That is worth it's weight in gold. Utterly awesome project!

[dom9]

I follow the original thread using Chrome Translate: http://rejsa.nu/forum/viewtopic.php?t=74693&po...

Looks like he has made some good progress over Christmas!

Hopefully not too long to go

[GTRene]

good update, looks interesting that rear subframe.

[k-ink]

Why don't car companies make things like this?! Far better than most supercars I'd wager.

[Scuffers]

Homologation
Product Liability
Etc etc...