2 TL1000R Engines In suferer buggy

[LEE1969GB]

I have purchased a suferer buggy from kevin at suferer motorsport (see picture this actual one) My idea was (and still might well be) to fit another 800 rotax and subaru diff like I have in my pilot with cutter brakes.
The main reason for the tl engines is I would like to make it road legal and there is no chance of getting the 2 stroke rotax engine through the emissions test which is part of the SVA test here in the uk.

I have a TL1000R race bike that no one wants to give me good money for so I was thinking of parting it out as it has lots of expensive bits on it but a standard engine. I also have a spare engine and most of the bits to get it running.
Why 2 engines??? Well I have 2 engines so I may as well use them and what I want to do is use one engine for each rear wheel and that will work as if it had a diff but still has power to both wheels all of the time. My idea is to have the 2 narrow v twin engines side by side with the one on the right (looking from the rear) with a chain drive stright to the right side drive shaft, the left side engine would need to drive to one of these fnr boxes used on bike engined cars(it fits in between the UJs on the prop shaft) across to the clutch side of the engine then chain drive to the left side drive shaft.
This way I get reverse but only on the left wheel and I would need to put the right side engine in neutral or spin it around on the spot like a tank . I would have 2 seperate gear levers but close together so I can change both at the same time or one at a time, If coming in to a left hand turn I can go down an extra gear on the left side engine to help it turn then go up an extra shift on the right on the way out of the turn, 2 rev counters will tell me if the gearboxes are in the same gear or 2 of those digital gear indecators.

[masterfabr]

I gotta admit that is original thinking for sure.Personally I don't think it will be practical but who knows.

[LEE1969GB]

Pictures of buggy and FNR and race TL1000R.

[masterfabr]

Personal opinion only. The only way to practically use 2 engines is to couple them mechanically before they enter a gearbox (into a common engine in effect )so far as the gearbox is concerned OR with 2 separate gearboxes that will ,I believe ,require sychronous shifting of both at the same time with a common linkage operating both.I've sketched up something like that to use 2 busas. Separate linkages for each that operate independently of the other are a recipe for disaster.IMO.

[LEE1969GB]

Originally Posted by masterfabr\";p=\&quot

Personal opinion only. The only way to practically use 2 engines is to couple them mechanically before they enter a gearbox (into a common engine in effect )so far as the gearbox is concerned OR with 2 separate gearboxes that will ,I believe ,require sychronous shifting of both at the same time with a common linkage operating both.I've sketched up something like that to use 2 busas. Separate linkages for each that operate independently of the other are a recipe for disaster.IMO.

Not sure about in the states but here in the UK there are quite a few kit cars and grass trackers with 2 bike engines complete with there original gearboxes, only after the gearbox output shaft are they linked to drive to a diff or spool etc then on to the wheels. I do not want to link them in any way, that way you can potentially have better control and no understeer.
If I have a quickshifter on on each engine (the type that cuts the spark) it does not matter if you do not change gear excactly at the same time.

[masterfabr]

The way it is done there will and does work.YOUR idea in theory is sound but ,again just my opinion, is flawed from a practicality standpoint.There is no way that I can see that will allow you to independently drive the wheels with 2 separated engines without creating a handling nightmare.Think of it this way-on a standard car with a differential if you use the turning brake you can easily control the vehicles direction of travel by the easily controlled application of the brakes. Right? OK now if you are trying to in effect do the same thing with 2 engines by running one in one gear and the other in another it will take extremely precise throttle control to maintain vehicle control.It ain't,IMO, gonna happen with a human controlling the throttle! Don't want to piss in your Wheaties but unless you know something I don't about how you will maintain control (and I'd really appreciate you explaining it to me if that's the case ) there's no way it will work other than in theory.

[LEE1969GB]

Dont get me wrong I am far from sure that it will handle like a dream first time out or second for that matter, this is a watered down version of something I have wanted to build for 20 odd years, 4 wheel steer 1 engine driving both wheels on the left and another engine driving both wheels on the right, each side front and rear wheel directly linked no diff between them and like on my 2 wheel drive tl project you have 2 cams on the steering column or someware on the rack that slackens off the throttle cable of the left side engine when turning left, the more you turn the wheel the more difference in revs between the 2 engines. This system would make one engine rev less not make 1 rev more, this would need a lot of work getting the profile of the cam or ramp right.
I know it is not a comparison that means this tl engined idea would work but a few years ago me and a friend knocked up a very rough buggy, no front suspension and 2 80cc scooter engines mounted at the rear with there wheels on the engines as they are on a scooter, this worked great compared to a buggy with no diff there was very little understeer because the rear tyres are not fighting each other when you turn in, then it started to get silly when we found a 125cc scooter engine and managed to squeeze it between the other 2 so we had 3 wheels and engines at the back.
I know its daft but I do like to do things like this for myself and learn from it and understand how things work and why

[masterfabr]

If you are an electronic wizard I'd say go for it but ,again just my opinion,I have serious doubts about a mechanical version ever working.Electronically on the other hand might actually have a real chance. Of course it will be a real bitch to control when a chain breaks or a gearbox breaks or a clutch slips *or a tire goes low or a chain breaks or or or or or ........

[minibugger]

It has been done before by someone in Michigan. There was an article in Sand Sports magazine. He used a couple 700 Artic cat snowmobile engines, one engine to drive each wheel. I believe he was an electrical engineer and I seem to remember that he had some very interesting controls including a steering wheel potentiometer that would adjust the throttle on either engine, depending which direction he was turning. I also believe it was street legal. Sorry that I am unable to find the article, but it was a couple a years ago I believe.

[masterfabr]

Coool!!! Find that article. Sounds interesting.