Two Wheel Drive Motorbikes!!!

hopoffbaby · Spanner Monkey Joined: 16 Mar 2002 Karma :

As i was casually browsing the internet i found something about yamaha releasing a two wheel drive bike in 2004!! Shocked

*See it here*

Noggin · Traffic Copper Joined: 27 Feb 2004 Karma :

I heard about this in mcn a couple of months ago now, it sounds good on that link of yours. Will do great in trials etc. I want to know how it will affect sports bikes and things, should find out soon though

Craig G (Noggin)
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Current bike: kawasaki zx12r 2002
Track bike: yamaha r6 1998
Old Bike: honda NSR 125 1998

McJamweasel · BCF Junkie Joined: 22 Mar 2002 Karma :

Noggin · Traffic Copper Joined: 27 Feb 2004 Karma :

wow, I didn't read that bit, 5 seconds, thats erm.. a lot! I wonder why they aren't using it in moto GP then...

hmm...

Craig G (Noggin)
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Current bike: kawasaki zx12r 2002
Track bike: yamaha r6 1998
Old Bike: honda NSR 125 1998

Noggin · Traffic Copper Joined: 27 Feb 2004 Karma :

wow, I didn't read that bit, 5 seconds, thats erm.. a lot! I wonder why they aren't using it in moto GP then...

hmm...

Craig G (Noggin)
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Current bike: kawasaki zx12r 2002
Track bike: yamaha r6 1998
Old Bike: honda NSR 125 1998

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Probably the extra weight, and the fact that with the front wheel in the air it will still only be one wheel drive.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

Sparks! · Sir Tart-a-lot Joined: 30 Aug 2003 Karma :

OK 2 wheel driving then, so if you do a stoppie..........................................

With perfect balance can you ride it for like, ever? Laughing

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Current Toys: 06 Yamaha WR250F | Nissan 350Z GT | Tech 4 Homes

nealski · Renault 5 Driver Joined: 26 Feb 2004 Karma :

Yammy put this (or another 2wd) bike into the Dakar and came 8th overall I think. From what i heard it is not going to be used in track racing in the near future, just off road.

Also I believe it is going to be used on mid-range bikes to inspire confidence like ABS.

Formula 1 is RWD, World rally cars are 4wd, I think bikes will follow this patten.

Neal
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Nealski
- Dealing with the SSDD

cagiva gezzer · World Chat Champion Joined: 17 Mar 2003 Karma :

On a road bike wouldn't you also get problems when leaning the bike over, as the front and rear wheels have different profiles and the wheels would effectively spin at different rates and confuse it.

Thats the main reason why traction control hasn't been fitted to bikes.

Does't matter so much on dirt bikes as its rare to get both wheels in traction at the same time.

IF it had been fitted to a KTM it would of come 1st, not 8th!
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"because one stroke isnt enough and four strokes waste two"

G1_ · World Chat Champion Joined: 27 May 2002 Karma :

Cars have the some problem with inside and outside wheels, thats why they have differentials. I expect these bikes will have a similar system.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Can see where he is coming from. Different makes of tyres of the same nominal size have profiles that vary so the rolling radius will change differently as the bike leans over.

As mentioned cars do have the same problem. Not only between the inner and outer wheels but also between front and rear wheels. When a car is cornering the front wheels travel faster than the rear wheels as they are going round a slightly wider radius circle.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

kev · I Hump Things Joined: 07 Oct 2002 Karma :

Years ago I saw a 2 wheel drive motorbike on tv.

It was a motorcross bike and had a really strange setup with a chain going down from the handlebars.

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

AFAIK, the system is only supposed to transfer 30% of the power from the rear wheel to the front, so its not like you'll get problems with cornering really. braking can produce about 55bhp worth of power (according to RiDE a little while ago) so 40 odd BHP probably won't be a problem.

I'd love to have a go! Smile

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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F; Cheap project: CBR900RR FireBlade
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.