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2 engines
oadamo - 15/9/07 at 01:49 PM

how would be best to run two engines. would you put one on each back wheel. or would you run them on a chain diff.what do you think would be best.
adam

ChrisGamlin - 15/9/07 at 01:51 PM

There was a thread about twin engines a couple of weeks ago which covered this question........

Edited to add: here

[Edited on 15/9/07 by ChrisGamlin]

oadamo - 15/9/07 at 02:02 PM

iam just after a bit of info hows best to di it. as there is space between the engines i cant fit it onto one dif. i would have to run a shaft out of each side of the diff then space the two spockets then put the driveshafts on the ends. but this doesnt seem a cheap way of doing it.
adam

ChrisGamlin - 15/9/07 at 03:08 PM

quote:
Originally posted by oadamo
...but this doesnt seem a cheap way of doing it.
adam

And therein lies the rub, there is no cheap way of doing it, at least not reliably for general road / trackday use.

blakep82 - 15/9/07 at 03:17 PM

one engine on the front wheels, on engine on the back wheels.

I wouldn't put one on each back wheel, incase one engine is a bit more powerful than the other, could maybe end up pushing the car to one side?

http://www.cartorque.co.za/0118.htm


well, until it caught fire anyway...
http://www.bofunk.com/video/2489/twin_engine_bomb.html


[Edited on 15/9/07 by blakep82]

ChrisGamlin - 15/9/07 at 03:44 PM

quote:
Originally posted by blakep82
one engine on the front wheels, on engine on the back wheels.


If you do that its great for going in straight lines, but (comparatively speaking at least) it will be hopeless in the corners unless you spend 5 figure sums on trick ECUs to manage the power balance when you're cornering, as Z Cars proved with their Z100WR

[Edited on 15/9/07 by ChrisGamlin]

froggy - 15/9/07 at 04:43 PM

i seriously thought about pulling my tl out and putting a pairof tl motors in grasstrack style but opted for nitrous instead.gained the same bhp/tonne that i would have got with the extra engine but without the grief and all the extra weight

nick205 - 15/9/07 at 07:17 PM

NS Dev on this forum has been building a twin BEC grass track car I believe - might be able to give you some pointers

ChrisGamlin - 15/9/07 at 08:48 PM

quote:
Originally posted by nick205
NS Dev on this forum has been building a twin BEC grass track car I believe - might be able to give you some pointers


NS Dev has made some comments in the thread I linked to at the top, and he too suggests it will be bloomin expensive to make road reliable.