Dunc
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 posted on 5/3/02 at 11:17 AM |
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Locost GT (who needs 12,500rpm)
Since my aquisitions at the weekend the idea part of my head is in overdrive. I've been thinking of the ultimate road going seven. A motorway cruiser
that can change the weather just by starting up. I've still to work out if its possible but I WILL make it work, eventually.
My ideas revolve round the use of the V12 I now have and how the hell I can build a chassis around it and still make it look like a seven. Who needs
12500rpm when you have 250lb ft of torque at 1500rpm. I want to use all of the XJS running gear, along with A/C, P/S and electric seats for that snob
effect.
I'm not planning on racing it and Colin Chapman is probably turning in his grave at the thought of this but the whole car should still be less than
1000kg. V8 just doesn't have enough cylinders.
Has anyone else had similar ideas or am I just going loony tunes? I'll need to think of a name for this project and for the badge on the back,
sugestions would be welcome.
Dunc.
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chrisg
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| posted on 5/3/02 at 06:38 PM |
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There used to be a V12 Robin Hood, till one of the kit car mags crashed it, maybe you could find out how they did it, possibly on the RH site?
Cheers
Chris
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merlin
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| posted on 5/3/02 at 07:11 PM |
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they probably had a lead foot and wrapped it round a lamp post!! "that's how they did it.." 
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chrisg
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| posted on 5/3/02 at 07:26 PM |
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Good God,
You need to watch every word!
I mean, see how they made the car(obviously)
Cheers
Chris 
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theconrodkid
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| posted on 5/3/02 at 07:39 PM |
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     photo of a recent
west london meet,guess who is who?
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merlin
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| posted on 5/3/02 at 09:00 PM |
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you must be now you've passed the SVA, I am obviously cos Chris doesn't like my jokes and as for Bob he must be dribbling over those oh so
sexy headlamp brackets!!
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theconrodkid
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| posted on 5/3/02 at 10:26 PM |
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9/10 i have rather more hair than that one!
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merlin
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| posted on 6/3/02 at 06:51 AM |
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ok but you must admit Bob is a dead ringer!
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Liam
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| posted on 15/3/02 at 08:15 PM |
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Helloooooo...
Wow this place has certainly changed since my last visit (when there were about 10 members). This is so much better than that email list. Nice to
meet everyone.
Anyway - Dunc (nice brackets - taa muchly), I'm just trying to imagine fitting my V6 in...twice! Well as long as you dont want 4WD and inboard
shocks, like me, then I reckon you can do it with close to standard dimensions. Most of my car is tight as a bikini on Pavaroti - in fact my motto
ought to be "just enough space is enough space". Dont make it bigger if you don't really need to.
A V12 would be totally cool, and like you say, the thing will still weigh less than a tonne, i.e. less than any TVR (for example). Go for it.
Just make sure there is room for the twin turbo conversion later.
Call it something like the 'Genghis Kahn 5.3 Armageddon'
Happy building,
Liam
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stephen_gusterson
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| posted on 15/3/02 at 09:01 PM |
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quote:
Since my aquisitions at the weekend the idea part of my head is in overdrive. I've been thinking of the ultimate road going seven.
along with A/C, P/S and electric seats for that snob effect.
Dunc.
How about using monster truck wheels too- it prob wouldnt look out of place
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Dunc
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| posted on 15/3/02 at 09:45 PM |
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Twin turbo? what's wrong with totally over the top quad turbo? hehehehe.
Liam, I currently running around in a 2.9 v6 4x4 that I'm going to use as a car for my brother once the tax runs out at the end of May. It'll be a
shame to cut it up as it's minted but the idea of fitting 4x4 tyres from a Trooper appeals to him. How have you managed to work the inboard shocks
round the front driveshafts? I don't want to offset them because it might cause the bottom wishbone to twist.
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Metal Hippy™
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| posted on 16/3/02 at 01:20 AM |
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How about twin softer shocks either side of the driveshaft?
Just a random thought off the top of my head.
Maybe bike shocks?
President of the Non-conformist Locost Builders Club. E-mail for details...
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Liam
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| posted on 16/3/02 at 01:39 AM |
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Twins (turbos that is) will do me fine...seriously, on paper, a fairly simple 10psi system with two garret T2s (from a renault 5 turbo), and standard
compression ratio, will give me 270bhp. I want 300 but that will require 12+ psi and a reduction in compression ratio over standard.
Regards inboard shocks...with a front axle in the way, the shocks can't be in the middle of the wishbones whether they are inboard or outboard - they
have to be offset infront or behind the driveshafts. My main reason for putting them inboard is to give lots of wheel rate adjustment by having
different shock mounting positions on the rocking-arm top wishbones.
Obviously, if you want to be really academic, of course my wishbones will have a twisting load with the offset coilovers, but being realistic, this is
practically negligable in terms of affecting the handling of the car. Look at the back of an F1 car - the pushrods can't be central because of the
rear driveshafts - so the rear wishbones in theory want to twist, like my fronts. Nothing you can do about it - not a big problem. If it's OK for
McLaren, it's OK for me. You can bog yourself down in theory or you can suck it and see - I think I can learn more from the latter .
Happy building,
Liam
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HAGGISBIKER
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| posted on 25/6/02 at 11:42 PM |
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HI DUNK, 100% FOR THE V12....JUST GOT A FREE XJS V12 (DRIVING) WITH SHOT BODY...SOUNDS WICKED..OK..OK..BUST BACK-BOX BUT YEP I NEED TO TRY MAKING A
KIT CAR FROM IT!
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Dick Axtell
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| posted on 26/6/02 at 11:00 AM |
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Hi HB,
V12 = loadsatorque, sure, but how will the chassis handle it? IRS from your donor, I assume, which should cope at the rear, and the diff being
anchored to the chassis will "disguise" much of the torque effects. But it will still be there - I speak from experience with a certain
manufacturer's prototype (where it was assumed that engine torque wouldn't be a problem, because there was a de Dion rear end).
Dick
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Simon
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| posted on 26/6/02 at 11:18 AM |
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Hi Folks,
I have, in the past, had two Rover V8 SD1's and a 3.9 Range Rover. On all the cars, if you blipped the throttle, the shell would rotate. It was only
slight, but still noticeable. BMW's m/cycle twins were the same. Also, I fly r/c aircraft and you will find that aircraft roll in one direction,
better than the other. All due to torque reaction. Only way to countact act is to have a contra-rotating shaft(same mass as crank) per, for e.g.,
BMW's K series bikes, or mount engine transversely.
ATB
Simon
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Fatboy Dave
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| posted on 26/6/02 at 05:21 PM |
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Well, on the subject of the Robin reliant, er, Hood, Iain Ayre went off roading in it when he realised you can't hurl a car with a 500lb engine in it
around corners. He ripped an oil pipe off the sump, and had to be towed in. The car was still on the road for quite a while afterwards.......
Don't fancy a V12 Locost though. I have a twin turbo Rover V8 that I built for the equivalent of a ferry ticket to Le Mans, that gives me 220bhp and
300lb ft on about 5-6psi of boost, which I would rarther have over more cylinders any day..... (the correct compliment, in my book, is eight )
JM2p
Dave
Stop the planet, I want to get off
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Metal Hippy™
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 posted on 26/6/02 at 06:21 PM |
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What's the standard bhp of the Rover V8 then?
We're now settled on using the BMW 3.5 big block six and that kicks out 218 as standard, 228 torque...
Rich.
President of the Non-conformist Locost Builders Club. E-mail for details...
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UncleFista
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| posted on 26/6/02 at 06:40 PM |
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Christ !
Theres bleeding loads of different versions, from the MOD version in my mates cab forward at 92bhp to fire breathing monsters in TVR's etc.
Basically, its all down to the depth of your wallet, same as most things
Tony Bond / UncleFista
Love is like a snowmobile, speeding across the frozen tundra.
Which suddenly flips, pinning you underneath.
At night the ice-weasels come...
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Fatboy Dave
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| posted on 26/6/02 at 07:22 PM |
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Nah Tony, the 101fc (forward control) had 135bhp, the Stage 1 Series 3 had 91, because LR fitted restricter plates between the carb and manifold.
Most 3.5 engines around these days are Range Rover spec (no SD1s left now), run on mostly Strombergs (crap), have 135bhp, low compression, and go on
forever.
Beware of the later 9.25:1 engine from the RR, it was awful, thank christ it only made an appearance for three years :-(
SD1 3.5s are 150bhp, 3.9s on EFi are 190bhp, and 4.6s are 230bhp.
If you want turbos, which I did, the RR engine with it's 8.13:1 compression will happily take 12psi (300bhp )
Still less than the B*W though...
Dave
Stop the planet, I want to get off
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Metal Hippy™
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| posted on 26/6/02 at 07:22 PM |
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Ok then, SD1 derivitive...?
President of the Non-conformist Locost Builders Club. E-mail for details...
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Metal Hippy™
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| posted on 26/6/02 at 07:24 PM |
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Clicked about the same time...
Sorted.
President of the Non-conformist Locost Builders Club. E-mail for details...
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Fatboy Dave
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| posted on 26/6/02 at 07:24 PM |
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quote:
Ok then, SD1 derivitive...?
Blimey, talk about timing, see above....
Dave
Stop the planet, I want to get off
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Metal Hippy™
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| posted on 26/6/02 at 07:26 PM |
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SNAP!!
President of the Non-conformist Locost Builders Club. E-mail for details...
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Fatboy Dave
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| posted on 26/6/02 at 07:31 PM |
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Nah, secretly spying through your monitor....
That and the fact I have nothing better to do after me tea than post here
Oh, and buy more V8s
Dave
Stop the planet, I want to get off
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