Has any body got any info or links on how to set up twin motorbike engines in a seven.
Looking for info on the transfer box but cant find any links.
Paul.
cant find any link to z cars transfer box.
Z-cars did the tiger one
in the tiger, the engines were both orientated the same was as per a normal bec., with the prop of the front one just clearing the gearbox on the rear engine. Rather than a transfer box, you could use a jack shaft as per the rear engined ones, with the front engine connected via a sprocket adapter and a U/J and the rear one via a chain and the two front sprockets (one on the output shaft and one on the jack shaft). This would remove the issues of oiling and cooling.
Z cars also built a twin engined westfield which DID use a transfer box, in fact it was the first one they ever built, many years ago.
They had a box made which combined the outputs of the engines laid out as per joel's description
Remember looking at a price list of the tiger z100 years ago and the transfer box cost £2800 then, ouch
has anyone done a twin engined mid engine car, you could run the chain to from each one to the opposite sides of diff?
quote:
Originally posted by MK9R
has anyone done a twin engined mid engine car, you could run the chain to from each one to the opposite sides of diff?
) Probably a silly question but could you have one engine per wheel with the outputs controlled electronically a la traction control-ish?
Or would that be ridiculously difficult?
[Edited on 3/7/09 by tweek]
quote:
Probably a silly question but could you have one engine per wheel with the outputs controlled electronically a la traction control-ish?
Looking to put two bike engines in the front of the viento and drive a prop to the rear diff.
two year plan so now need to start collewcting and planning.
Paul
ive been thinking about this for years
Rescued attachment T1twin.jpg
What would be the best way to join them together? Chain/direct connection, or using some sort of LSD in reverse (i'm think the back end of a 4x4
sierra box, but in reverse)?
Unless the power outputs were matched, i'm not so sure it would work driving a rear wheel each?!?
dont anyone know how tiger do it,
i was actually watching the 5th gear episode with tiff in the z100 the other day. you could change gear on each engine seperately or at same time,with a split gear stick and 2 rev counters on digital display. quite smart until he blew an engine!
quote:
Originally posted by flibble
quote:
Probably a silly question but could you have one engine per wheel with the outputs controlled electronically a la traction control-ish?
Isn't that what Russbost(sp?) on here has in his Furore
tiff in the z100 here
I'd be surprised if the tiger engine combining box is anything more than two input shafts directly geared to a single output shaft, in a bath of
oil. You'd definately not want differential action (i.e. a diff in reverse) as if one engine produces a little more power it could easily
overspeed forcing the other engine to underspeed and bog down. In fact it'd be horribly unstable and you'd never get the engines running
together properly. All you want is them both directly driving a common output shaft as above so that they have to run at the same speed (assuming
you've got the engines in the same gear). Think BRM H16 - two flat 8s one on top of the other, crankshafts geared together onto a common
output.
To be honest, though, I reckon you'd be better off putting the money and time into a single turbo Busa engine or similar. Lighter, simpler,
probably cheaper and probably more reliable.
Liam
[Edited on 4/7/09 by Liam]
Decent pic HERE of a trasfer box, knew i'd seen one somewhere years ago! (under modificaions. Xfer box).
If you get it set up correctly, with one engine driving each wheel, you could do away with the conventional steering wheel and replace it with two
throttles which would perform the steering for you !!! 
Might go through tyres quickly, though!