Ducati Monster Forum

How awesome is this!

(http://www.asphaltandrubber.com/wp-content/uploads/2011/02/Kickboxer-diesel-AWD-Ian-McElroy-3.jpg)

from http://www.asphaltandrubber.com/ (http://www.asphaltandrubber.com/)

What? A picture of an AWD concept bike that can't turn?  ???

I have a decent printer, and know how to frame pictures. I can make this dream a reality. Let's just talk about the price... ;D

 [evil]

looks great until you see the profile  [puke]

(http://www.asphaltandrubber.com/wp-content/gallery/kickboxer-diesel-awd-concept-by-ian-mcelroy/kickboxer-diesel-awd-ian-mcelroy-1.jpg)

Sort of looks like you can't tell if you are " coming or going ."

Dolph      :)

Man I have enough trouble getting myself to lube just one chain.. forget that!

Nope.

No burnouts with this one!!

No matter how bad you want it  [evil]

 [puke]

Still don't know how you would turn the front.

I'd like to ride it once just to see what it's all about!  Let me know when you get one, Randall, and I'll drop by K-town next time I'm in the area for a "test ride" over on Warwoman Road.   ;D

Oh....and it has center hub steering like the Bimota Tesi....notice the knuckles at 11 o'clock and 5 o'clock in the side view pic just behind the sprocket?  The sprocket remains in plane (with the hub) and a CV joint on the opposite side of the hub (visible in the front quarter view) allows the wheel to turn.

Cloner
ABQ, NM
Desert Desmo LLC

(http://www.asphaltandrubber.com/wp-content/gallery/kickboxer-diesel-awd-concept-by-ian-mcelroy/kickboxer-diesel-awd-ian-mcelroy-1.jpg)

^
holy crap that's a lot of gold chain on that bike!!! I doubt Mr T even had that much gold around his neck!!

BLASPHEMER!  nobody has more gold chain than mr T!!  NOBODY!! haha

i like to say "gadzooks" to those types of things.

i like it.

The chain doenst turn with the front wheel. It just spins a hub and that hub is allowed to pivot. But it donst look like you could turn the wheel that much unless u push the chain further out.

really cool design, but poweroutput would SUCK cause that HUGE chain would take up a good chunk of power.

[laugh]

Also, how do they compensate for the reduced distance traveled by the rear tire when turning in a circle: do they just always skid one wheel? Unless you have some sort of differential (yes I know that Diffs are usually from side-to-side, but work with me here) to deal with the speed differences. We all know that the rear tire travels in a smaller circle than the front. The difference might not be much, but it would accumulate gradually until the strain on the chain required some slippage somewhere.

The Doc

The plane takes off.  [cheeky]

Look like Batman's bike or maybe Robin's bike...

go sit in the corner, you.

If you're building an AWD bike, it should definitely not be chain/belt driven. Friction drive? But you would then have the turn issue again.

The dude can make some interesting SolidWorks images.

Chance of that bike ever turning a wheel, 0%.

Looks like it was taken out of the terminator salvation movie  [thumbsup]

Ohlins made a an R1 AWD, it was hydraulic/fan driven. kinda like a speedo cable.

it was prettty cool. Whats the point of an AWD bike anyway?

unless you put another sprocket higher on the front forks, say at the level of the bottom triple, so that the front chain is vertical (parallel to the forks) and can turn with the entire front end.  but then it would be an entirely different design that this one...

Let's pretend we can put the "it can't turn" thing aside for a moment.  Wouldn't a bike with power input to the front pretty much guarantee that constant front-end lowsides?  What a nightmare. 

Low sides happen because lost of traction, either from spinning the front up to fast, or from slowing it down to much.
i think the same concept falls into play as in the rear wheel, so dont hit the gas too hard?

But then a rear wheel slide is managable, the front isnt. So it works, but applicable in racing? probably not.


(http://www.youtube.com/watch?v=5TrvXwoGKKU)

AWD seems to make more since on the dirt, but even then it seems like way more trouble than it would be worth??
http://www.christini.com/ (http://www.christini.com/)

that + studded tires = ultimate ice racer?

But it does have a 4 cylinder 2+ liter boxer motor, so it should have plenty of power.

Naturally this is all theoretical, but its fun to dream. Of course my dream would have this bike equipped with a machine gun on one side, and a small rocket launcher on the other.....  [evil]

If you look closely at the front picture there is a CV joint. And i am assuming that there is steering linkage on the other side.  And I am sure that having AWD on a bike would be awesome as long as there is a computer system managing traction front and rear.  Like riding down hill would be easier.

But again great in concept but a motorcycle is a designed for being light. Going this route is counter intuitive. 

that wouldnt work. the bike would ride lop sided once you fired the rocket.

Best to have 2 machine guns and a mini rocket in place of a headlight.
or to have 2 rockets on each side that fire simultaneously for extra kaboom.

drag bike!

Low sides happen because the available traction at the front wheel is exceeded, either thru cornering force or braking (although Spidey was talking about cornering force). I'm not sure what you mean by "spinning the front up too fast"??

Anyway, I think what Spidey is getting at is the front wheel is only responsible for cornering (or braking) traction, not acceleration. Adding another responsibility (i.e. acceleration) for the available traction would reduce the amount of traction available for cornering...hence lowsides.

an interesting feature would be a gyroscopic differential that determines the lean angle to determine how much power if any if sent to the front wheel.

Im saying exactly what your saying, if your in a regular bike, if you lose traction by going off the edge or by too much brake (tire slowing down faster than available grip). If your on an AWD bike, you might be accelerating and theres not enough traction to accelerate also causing a low side, so as long as you manage the front as you manage the rear tire you should techincaly be fine. I think.