IIRC from 'Scrappy Races', it's illegal to have a different engine for the front and rear wheels, but if they both go into some sort of common transmission, then it's OK. Allegedly.

I wonder why?

Wonder how this will effect hybrid drive cars.

there is a kit car called the somthing? "tiger"' date=' that held the 0 to 60 recold.

it had two engines, one in the front, one in the back. with two gear boxes and two gear sticks (side by side sequentiol)

one engine drove the front. and one drove the back.

so it must be legal some how.[/quote']

I wonder why?

Wonder how this will effect hybrid drive cars.

:ne_nau: I can only imagine that if the gear selection messed up and the the rear wheels / engine / gears were in a different gear to the fronts, there would be the possibility to swop ends in spectacular fashion? Is it the case with 'proper' 4x4 that the centre diff always sends more power to the front wheels than the back? If so, maybe that's the reason?

As for the 'Tiger', it can hold the record for 0-60, but it doesn't have to ever have been on a public road? Certainly, the twin engine jobbie on Scrappy Races was OK to use on both engines off the public highway, but they had a bit where they did an A-B time trial on public roads, and had to take the propshaft out for the front wheels IIRC (thus making it 2WD) to make it road legal...

:ne_nau: I can only imagine that if the gear selection messed up and the the rear wheels / engine / gears were in a different gear to the fronts, there would be the possibility to swop ends in spectacular fashion? Is it the case with 'proper' 4x4 that the centre diff always sends more power to the front wheels than the back? If so, maybe that's the reason?

Quite the "reverse" in the case of 4wd systems.

A "dumb" mechanical system with a free centre diff or a locked centre diff (spool), and available traction at all corners, sends equal torque to each axle when moving in a straight line.

A Torsen or Viscous Coupling (VC) system, such as fitted to the later Audi quattros and Ford Sierra V6 4x4s respectively can be biassed towards either axle. IIRC the Audi used 53% front to 47% rear, and the Sierra used 33% front 67% rear.

It's only complex electronnicy systems like a Haldex that work with 100% split and then engage 4wd when the single driven end loses traction.

Well I never!

Actually, you'd be right about the possibility of out of synch twinnies (different gear or wildly different throttle settings) being possibly able to do some odd things. I'd not swear to handling rather than acceleration/braking issues though.

I would image that handling wise it would not be as good just purely down to the weight of the car (if twin car engines were used!)

anyway! I am sticking to a single engine so that this actually handles.

I plan on doing track days, drag days and tramp drifting with it!

I'd not swear to actually bad handling (lots of under/oversteer), but poor turn-in and out, and "catchability", due to the very high polar moment of inertia at both ends sure.

there is a guy on the vauxhall forum who is making a twin engined corsa, so i will be interested in seeing how that turns out... the car is made, he is basically saving up for the two engines... two 2lt turbo engines with about 400 - 500 bhp EACH!!!! will be an animal!!!!!!!!

very good project love to have the know how to do it

looks like its gona be Fun.Have fun and keep us posted!!!