Look at this!

OK guys check this out and my question is can this be done to a 550 maxim?
I'm talking about the bike.LOL

 

That's 2 650 motors.

 

No ideas?

 

You can build anything as long as your imagination and fabricating skill are up to the challange. Deep pockets would also be a benefit.

 

Do it right and you might get the girl too!

 

doubt it, the girl i mean

 

Oh.. I dunno.. Throw enough money at her!! "Deep pockets would also be a benefit."

Just noticed the ground clearance on that bike.. I take it that you're not intending to ride it on anything except a straight line on a golf green??

 

She's posing, it's posing ..an engineering feat but next to useless for me, both of 'em.. that is.

 

Well, if you ever have one or both of them spare, send them my way, I can make use of both with a few modifications! He he..

 

Your right it does sit a bit low.But can you imagine 2 550 motors back to back, it would scream! Money, a big deal, considering the wife would get most of it after finding out about chickie! I mean the bike.

 

Next question, how would you figure out the chain to gear ratio's from motor to motor?

 

id need a test drive first... she looks low mileage.

 

Get identical motors.. Then you should be able to chain the two sprockets together 1:1.. Then take a second sprocket off the rear motor onto the back axle. With two motors, you'll be able to increase the number of teeth on that, because you've doubled the amount of torque you have.. But be careful, youcould damage the bolts/drive shaft etc with the extra torque..

 

Thank's SWISSJON, when I get thru with my 700 (pics coming soon), I'm thinking of tackling this in maybe a Cafe style.

 

LoL.. If it were me, I'd just stick a hulking great 1.2 litre engine from a FJR or something like that, trying to get two 650 engines to run alongside each other in perfect harmony is going o give you some very sleepless nights.. Not only do you have to get the engne spinning together at the same speed, (nearly impossible, I can't even get mine settling on an idling speed) You've got to get the accelation cable working, the airbox and carbs, working and a whole bunch of other headaches like trying to cool the rear engine and then you've got to be sure that the frame has the strength to cope..

If you were going to do this, I'd be tempted to mount them side by side and run two chains down to the back, one on either side, then at least you don't have problems with cooling and there's room for all the essentials.. Only thing that's a real headache is to figure out a way to get the "other" drive shaft spinning in the opposite direction. You'd probably also need some kind of custom frame to accomodate this..

 

Aren't 550's chain drive? I think a sportster frame would have enough space for 2 motors.

 

Is one big motor too easy, or why bother to hassle with two?

 

I think his point is that it is difficult. One big engine and he might as well buy a big bike and be done with it.

 

Yes it would be a lot easier to go and buy an 1100,1200 or 1350, but this would be unique and cool. I mean why bother with my 25 year old XJ700 when I could go out and buy something new? It's unique,cool and different from the norm. Thank's for the info, maybe I'll tackle this sometime or lay it by the wayside with 50,000 other things I thought about doing.LOL

 

i saw tath mag but it never crossed my mind and i have a spare motor and titled frame hmmmm!!!! like i heard b4 you have me looking beetwen my bike and the other engine........

 

We got people who are having trouble getting one engine running well enough to let them ride the bike.

I'd like to know how two engines can be be synchronized and governed to allow them to power one bike.

 

We have two diesels that drive on shaft on our ship. There is a clutch in between each engine and the main gear that allows it to engage and disengage from power.

It is also a "fly-by-wire" control with a governor, which makes it easier, but if you think about it, don't we adjust the throttle linkage to sync all four carbs together anyway? Having 2 of our engines side by side with a coupling in between wouldn't be that much different than 4 pistons and 4 carburetors, would it? It would just be 8 pistons and 8 carburetors. It's easy to get the timing the same, in fact if you did it right you might even get some secondary balance out of the thing. Like a Boxer 8.

Better make sure those carbs are clean!!

 

Still talking about the bike, right?

 

To hell with clean carbs. If your going to go that far, make it fuel injected while your there.

 

So Roddyxj, you have an extra engine and a frame? You can do it! LOL
Hmmm, fuel injection would be easier and 8 cylinders would probably kill anything out there.

 

It's easier if you just use one crank, clutch and tranny- -

http://www.youtube.com/watch?v=OEe6c3KIUB4&NR=1

This guy makes some awesome stuff !!

Just DON'T be this guy- -

http://www.youtube.com/watch?v=1mLvstAw08o

 

so what you guys are saying is that there is a bike in that picture?

nope... not seeing it.

 

It's one of those optical illusions... you need to squint really hard till everything gets fuzzy or go cross-eyed or something I think.

 

Careful TMHack.. You can go blind doing that!

 

Not a bike, but perhaps you could talk to this tractor pulling guy who has no less than five engines mounted on his rig.

 

In the magazine the bike has 1 motor sitting behind the other. The first motor doesn't have a tranny, there is a chain running from the crank sprocket to the crank sprocket of the second motor. Then a chain to the tranny and a final chain to the rear wheel. I figure a V-twin frame would have enough room for 2 550 xj motors without having to stretch the frame. Maybe 2 xs motors would be less of a headache.

 

If you're concerned about a headache maybe that project isn't for you.