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Author Topic: Motorbike - Would this design work?  (Read 1193 times)

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Mr Skrunts

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Motorbike - Would this design work?
« on: 02 December 2010, 23:03:23 »
[media]http://www.youtube.com/watch?v=cVfwMNtCpvE&feature=related[/media]
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aaronjb

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Re: Motorbike - Would this design work?
« Reply #1 on: 02 December 2010, 23:14:41 »
I guess the theory is it'll keep the driving wheel on the ground like an oversized wheelie-bar .. but wouldn't it end up accelerating a bit like a front wheel drive car? scrabble scrabble..

I don't know about that, but I do want one of these:

[media]http://www.youtube.com/watch?v=ivPheV77JcU[/media]
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mrjimbo

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Re: Motorbike - Would this design work?
« Reply #2 on: 02 December 2010, 23:26:44 »
Probably handle like a broken sofa  ;D
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Mr Skrunts

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Re: Motorbike - Would this design work?
« Reply #3 on: 02 December 2010, 23:27:35 »
or

[media]http://www.youtube.com/watch?v=lc4N5PLIVfU[/media]

[media]http://www.youtube.com/watch?v=UbUrIwA9jVE&NR=1&feature=fvwp[/media]
« Last Edit: 02 December 2010, 23:32:10 by skruntie »
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feeutfo

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Re: Motorbike - Would this design work?
« Reply #4 on: 02 December 2010, 23:29:40 »
Well, I ain't no designer, and I ain't no engineer, but I would think the main problem would be getting the wheels to steer correctly, if the two rear wheels are not steered the wheel at the back would stop the bike turning... So either the front and rear wheels steer like half a 4 wheels steer car, or the front two wheels steer like half a double axle steering lorry? If you see what I mean...?

While the added grip and stability would be good, I can't see it working. Plus the cad designer has left no room for suspension movement on the middle wheel as a detail.

And I'm guessing no thought has been given to front or rear wheels lifting under power or brakes, gyroscopic effect will be fairly huge.

Will it work? Depends what you mean by work, it probably could be made to stay upright, possibly even be usable, but will it make a moto gp race? Guessing not.

Very interesting though, I had some odd thoughts about hub steering designs on car type wheels to give a bigger contact patch, they would never work either but this is proper parallel thinking.   :y
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feeutfo

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Re: Motorbike - Would this design work?
« Reply #5 on: 02 December 2010, 23:39:52 »
Hold up, watched again, middle wheel powers, front and rears steer.  :y
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albitz

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Re: Motorbike - Would this design work?
« Reply #6 on: 02 December 2010, 23:52:05 »
All 4 have two things in common imo.
1. Interesting engineering concepts
2. Utterly incapable of going round a corner....... but then they are probably all American. ::)
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Mr Skrunts

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Re: Motorbike - Would this design work?
« Reply #7 on: 03 December 2010, 09:57:01 »
Quote
All 4 have two things in common imo.
1. Interesting engineering concepts
2. Utterly incapable of going round a corner....... but then they are probably all American. ::)

Correct   ;D ;D ;D :y
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Mr Skrunts

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Re: Motorbike - Would this design work?
« Reply #8 on: 03 December 2010, 09:58:31 »
Allthough saying that the viper bike has UK plates on it, so maybe not american design.
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aaronjb

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Re: Motorbike - Would this design work?
« Reply #9 on: 03 December 2010, 10:31:19 »
Quote
Allthough saying that the viper bike has UK plates on it, so maybe not american design.

And they were at Bruntingthorpe air strip .. last time I checked that was in the UK ;)

Oh and - yes, built by a Brit: http://thekneeslider.com/archives/2009/08/25/allen-millyard-builds-a-viper-v10-motorcycle/
« Last Edit: 03 December 2010, 10:32:44 by aaronjb »
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Chris_H

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Re: Motorbike - Would this design work?
« Reply #10 on: 03 December 2010, 10:58:02 »
I wouldn't want to ride the 3-inline-wheel bike.  The chances of all three wheels being in good contact with a real road at any time are slim.  The handling would change dramatically according to which ones had the weight on them and that's after you've conquered adjusting them correctly for a (leaned) turn.
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bluey

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Re: Motorbike - Would this design work?
« Reply #11 on: 03 December 2010, 12:20:29 »
Engineering a 3-wheeled bike to deal with undulations and bumps would be a bit of a challenge.  The middle one will have to be find some sort of compromise between being having quite long and linear compression travel while also holding it down firmly enough to prevent the drive making it tramp. 

I love the Tron bike but typical bleedin' Americans, they built it way too wide.  That Viper-powered thing leaves me pretty cold if I'm honest.  It may have a huge ability to drag the horizon in but give it a set of twisties and it wouldn't shake off a moped. 

And why, for heaven's sake, do MCN continue to make such rubbish videos?  Every time I watch one of their efforts I'm left wondering why I wasted another 3 minutes of my life.  They are utterly useless with a camcorder.  They're not much better with a keyboard admittedly!  ;D

Now, if you'll excuse me, I'm off to go and dribble over the new Ducati.   8-)
« Last Edit: 03 December 2010, 12:21:13 by bluey »
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mrjimbo

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Re: Motorbike - Would this design work?
« Reply #12 on: 03 December 2010, 12:38:50 »
These are the only bikes that should have 3 wheels, so much more fun   ;D

 http://www.youtube.com/watch?v=e0UoSBIunZw 
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Weds

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Re: Motorbike - Would this design work?
« Reply #13 on: 03 December 2010, 13:54:03 »
Quote
These are the only bikes that should have 3 wheels, so much more fun   ;D

 http://www.youtube.com/watch?v=e0UoSBIunZw 

Jesus !!! there quick through there...
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