Originally posted by 02GF74
and why stop at 2? someone on LR forum was considering using a motor boat engine to drive a wheel on each corner!
just a wild idea i had today, could someone put two engines in a car, one driving the front wheels and one driving the back wheels?
i know jeep did something with two hemi V8's
my concern would be that the front or the rear wheels spinning at a different rate could buggar up the cornering ability of the car?
opinions?
cheers
Matt
that was what the original mini moke was - a twin engined 4wd
Search for info on the Tiger/Z cars twin engined car. 2 bike engines, with one driving front wheels and one driving rear. There's video footage
on YouTube of Tiff Needell driving it as well - very potent by all accounts, but very £££ to build.
Also done by Ian Birch @ Dubsport with a twin engined VW Golf - can't remember, but it might have been 2 x VR6 engines in that one.
In short yes you can do it, but it's not simple or cheap that's for certain
Been done for years with minis
http://www.youtube.com/watch?v=uZn65vX_kiw
One also put the last nail in the Cooper F1 team coffin when John Cooper was seriously injured by one back in 1963.
The trick is making sure the gearboxes are synced.
Finally found the 700bhp Corolla, the commentary is brilliant (in its genre)
http://www.youtube.com/watch?v=gxbcvhCEKIU
[Edited on 17/1/07 by iank]
quote:
Originally posted by novacaine
just a wild idea i had today, could someone put two engines in a car, one driving the front wheels and one driving the back wheels?
quote:
Originally posted by 02GF74
and why stop at 2? someone on LR forum was considering using a motor boat engine to drive a wheel on each corner!
that would certainly be ummm ....interesting lol
Seperate drive systems will not work in practical terms.
Great for wow factor at the pub and car meets (which is fun!! ) but no good to drive I'm afraid.
Why not just use two to drive one pair of wheels like we do in autograss:
quote:
Seperate drive systems will not work in practical terms
are yours not mechanically connected though Russ? I thought they were from what i have seen?
An acquaintance of mine had a Metro with two metro turbo engines/gearboxes etc. and it was certainly quite rapid.
The rear gear change was done with windscreen wiper motors controlled by microswitches mounted on the front gearlever remote.
Dev,
Nope, LH engine drives NSR wheel, RH engine drives OSR wheel. I've had 'em in different gears to each other, even driven home on one engine
3 or 4 times no prob. At SVA they made me fit a cutout to one engine then drive round the test centre with both engines driving & cut one of them
hence dragging it along in gear - they were dead disapointed when it still drove in a straight line!
On the road it works much like a LSD - I guess the only major prob would arise if you get one rear wheel in the air!
So far I've not been that brave (or is that stupid?)
[Edited on 17/1/07 by russbost]
......eek!
A bit worried about the high speed dynamics of that, not done it myself so i don't know, but I have seen what happens to an autograss car at the
startline when one driveshaft breaks (which would be similar to one of your engines dragging badly) and under the high torque load they nearly always
twist 90 deg to the track and get hit by another car!
that is because you will need to slide 2 wheels of the front that in dry condition takes much force.. sow with a bit of steering compensation it wont
twist.
But what in the wet???
Won“t try it, if you see how fast a leopard tank can turn ( i know it inverses also one wheel) its just the idea..
Tks
Re the Leopard tank - I've never tried making one of the rear wheels go backwards whilst the other rotates forwards - suspect it might result in
wheelspin rather than rotation!!! LOL