Would you give up your Thou' for an 800cc MotoGP rep?

[Nutter34]

Can't see that happening, seeing as the 1000's are WSB based and they've got the rights for a few more years yet. Then there's the politics between GP and WSB about bike sizes. Rumours about 250's going 600 etc. But, 600's are already a WSB domain. Who knows? I can't see them running same capacity sizes and having two different series for it... Even if one is production based and the other prototype...

[imdying]

I can't see them running same capacity sizes and having two different series for it...

Wot? You mean like motogp was for 5 or 6 years?

[pritch]

I voted for the 800, but then I would, I'm biased.

There was speculation in BIKE that Honda may bring out a V4 1000 to replace the CBR. But then there were prolific rumours that Honda were bringing out a V5 and we still haven't seen that.

The reason given by Yamaha for not bringing out "big bang" engines in road bikes was that these produce considerably more vibration and there were reliablility concerns if such engines were installed in road bikes.

[skelstar]

Ever-so-slightly realted: what advantage is a V4 going to give over a V-twin? ...other than fuel flow characteristics in a smaller cylinder maybe?

[onearmedbandit]

The sound.

[Deviant Esq]

Ever-so-slightly realted: what advantage is a V4 going to give over a V-twin? ...other than fuel flow characteristics in a smaller cylinder maybe?

It's sorta like a halfway house between an inline four and a V twin. It's got the characteristics of the twin: more torque lower in the rev range, better cleaner power delivery to the road (because of the configuration of the cyliders and the firing order the rear wheel is less likely to break loose), and a great sound... and some of the advantages of an inline four: still makes a reasonably high specific output, and revs higher than a V twin, although lower than an IL4.

I reckon Honda should make a VFR800RR. That would be awesome, I'd be keen to give it a go.

[xwhatsit]

Ever-so-slightly realted: what advantage is a V4 going to give over a V-twin? ...other than fuel flow characteristics in a smaller cylinder maybe?

Again, talking out of my arse, but I'd imagine for the same reason that four-cylinder engines are `better' (depending on your requirements) than twin-cylinder engines for sportsbikes.

EDIT: That sounds trite. What I mean is that sure a V4 would have much of the same benefits a straight four has over a V-2 in a sportsbike.

[Toast]

Stuff the 800, I'd take a thou'!

There are so few corners which are well-sighted enough to use the 800's extra cornering ability that it's a waste of time, in my view.

If I buy a light, powerful road bike again, it's gonna be real fuckin powerful...to the point that even I can pull mingin' 3rd gear wheelies down the motorway and show boy racers up in front of the chicks they're trying to impress.

And I don't think that Suzuki would be that fussed about Honda releasing an 800. Their 750 stuffed the 900cc Blades in practically every dimension of performance for years. Mind you, Suzuki would have a little more work to designs it in the mould of their new 600.

[imdying]

Ever-so-slightly realted: what advantage is a V4 going to give over a V-twin? ...other than fuel flow characteristics in a smaller cylinder maybe?

More valve area (over a twin) and a slimmer motor (over a IL4)?

[vifferman]

Wotchootalking about - I already have an 800cc MotoGP replica: the RC46.

It's Eggs Zachary the same as the RC212V: it's a V4, (nearly) 800cc, it has two wheels, fuel injection, a rorty V4 sound, gear-driven cams, stuff like that.

It just has some extra things, like weight, a pillion seat, lights, a garage door opener, three (3!) horns, an Evo Star Shift Kit, O2 sensor eliminators, heated grips, battle scars, a Unifilter, a speedo corrector (and a speedo!), and stuff like that....

[avgas]

I dont see it happening. How many R7's you see around these days.
Even the RVF never really took off and they never made the full spec ones.
Dont forget the Norton rotarys.

[Korea]

Sure, I'll have one of those 800cc GP bikes...

Y'know, for trackdays and stuff...

[skelstar]

V4 vs V2 ...made the assumption that pairs of cylinders fire together. Maybe a correct one ....valve area makes sense though..

[cowpoos]

Hold up dude..most of?? Only Yamaha are using inline four, everyone else is V4 now.

nope...kawas are inline4's bro...kawa was in 990cc form a bigbang inline so may have sounded like a V4 to some??

[Marknz]

there is talk of the new '08 Fireblade being a V4, but no suggestion it will drop down to 800cc ala MotoGP