KAWASAKI H2R top speed - what do you think ?

well it will be interesting to see just how much the 2 bikes are. I cant see the track version being anything but super overpriced and not really worth comparing. now as for the street model we shall see. Of course i will wait for the new busa in 16 ... then i will decide. either way im getting something new in 17.
 
As I understood, it was 300 hp at the crank. At the wheel is a different story, and I would speculate around 250-260 hp. Gen 1 with stage 1 can easily achieve 250 at the wheel - which is a relatively inexpensive upgrade ($5-7k) for a used let's say '06 (valued at around $6k) for a total expense of $11-13k, and probably better aerodynamics, which is more important for top speed.


There isn't much loss from crank to wheel with just a chain between the two.

Your numbers suggest 17% loss, which is greater than my last car dynoed vs manufacturer claims.
 
210-220 is probably all the bike is too light to get to much before the wheels get air under them. Even a busa with the aerodynamics made for speed needs the weight it has to keep it down. and the wings on that thing are ugly
 
Kawasaki sure is demonstrating their abilities.

For a pure track machine, they would need pretty sophisticated electronics to handle 300hp and it would be the recreational Sunday rider having fun with the challenge of not being embarrassed by superior skills on a 1k or a 600. I believe it would be more a case of "Look at my nice toy".

On the street, how many riders can actually utilize the full available power of a 1k, or a Busa?

It will be interesting to see how the competition responds.

I believe the difference today compared to the 70's H2 is that we are pushing the envelope past what hp is really available for full utilization.
 
I think every reputable tuner/installer who does turbos/superchargers demonstrates their abilities as well. Compared to what they do, Kawasaki's H2R with 300 HP at the crank for a race only bike, not to mention the price - is not all that impressive.

However, what is impressive is having the balls to do it on a production bike.

Regardless of that, and as jellyrug said, most of this power is useless at the track compared to a more skilled rider on a today's plain 1k bike. To put it in perspective, on the straight, a H2R rider may gain 1-2 seconds. However, in turns, where a fine touch is required, H2R may be a handful - for the same turn of the throttle, the power change will be more abrupt for H2R. And speaking of corner exits... TC is God you have to pray to in every turn.
 
I think every reputable tuner/installer who does turbos/superchargers
demonstrates their abilities as well. Compared to what they do, Kawasaki's H2R with 300 HP
at the crank for a race only bike, not to mention the price - is not all that impressive.

However, what is impressive is having the balls to do it on a production bike.

I'm +100 on all that !
 
... most of this power is useless at the track compared to
a more skilled rider on a today's plain 1k bike.

To put it in perspective, on the straight, a H2R rider may gain 1-2 seconds.
However, in turns, where a fine touch is required, H2R may be a handful - for
the same turn of the throttle, the power change will be more abrupt for H2R.

And speaking of corner exits... TC is God you have to pray to in every turn.

It is impossible that Kawasaki intended this bike for land speed racing (LSR),
which is probably the only venue where this bike would be an out-performer.

Drag racing is certainly a possibility, since the road is straight,
and the "runoff" is ample for the speeds.

I may be one of the few folks on this forum that has
"world record" experience on a Yamaha TZ750.

When the TZ750 was first delivered, it boasted a
full 90 RWHP. In 1974, this amount of power was so high
that Yamaha USA required a written resume of a rider's
experience BEFORE they would consider selling him a bike.

In 1990, my TZ750 (still in 700cc trim became the first
(and still only) TZ Yamaha bike to break 200 MPH,
which it did three (3) times.

I never dyno'd the bike in 700cc trim, but when in
600cc trim, the bike showed 147.9 RWHP at the
Daytona brute horsepower shoot-out.

Peaky ?

50 HP @ 6,000 rpm
70 HP @ 8,000 RPM
147 HP @ 10,000 RPM

My experience with turbo bikes
(My first was a Harley in 1976)
is that the feeling is the same,
just magnified.

After running 242MPH at the Maxton Mile,
riding Rich Yancy's famous #8 BUD BUSA,
we examined the data.

With 400 RWHP, the front wheel was
not touching the ground for the last 1/8 mile.
 
As far as the gearing...I read that also.
Gears however are easily changed and
usually are when it comes to top end speed runs.

In the late 1970's and early 1980's all of the big
four ( HONDA, KAWASAKI , SUZUKI and YAMAHA)
all put out factory turbo bikes.

Yamaha = turbo seca, 650cc (air cooled)
Suzuki = turbo GN 650cc (air cooled)
Kawasaki = turbo 750cc (air cooled)
Honda - turbo cx 500 and cx 676 cc (H2O cooled but pushrod.)

All but the Kawasaki were shaft drive - presumably to
keep tuners from "changing the gearing."

The fastest I remember a Kawasaki production turbo
posting was about 185 MPH at a private test
at the Honda Proving Ground in California.

THIS bike should be different...........
 
she'll be as fast as the flying nun with those wings! :rofl:

thCA1WFYU6.jpg
 
she'll be as fast as the flying nun with those wings! :rofl:

Motorcycle "downforce" wings aren't new.

Seems to me that the FIM outlawed "wings" about 40-50 years ago.

Colin Seeley of some such luminary suggested - and raced a protype - of
a bike with a big "downforce" wing over the back seat.

When the rider slid forward for braking or acceleration,
the wing went into downforce mode. When the rider
slipped back, the wing went into "low drag" mode.

The FIM banned the wing mostly on safety grounds,
thinking the wing could do harm to other riders.
 
OK, I posted this on the GEN III thread
(this IS a Hayabusa web site, not an H2R web site)
but think about what you could do with a PROPER gen III
with the below spec's, at $19K, and the difference
between that and the price of the full-race H2R.....


I could see an attraction to a GEN III,
with a few simple mods done at the factory.

1) Widen the bore spacing by about 1/4 inch.

(That MIGHT widen the engine by 3/4 inch at the most,
and only at the cylinder for sure.)

2) Increase the bore by maybe 8mm.

3) Lengthen the stroke by another 5mm.

That would allow a factory displacement
of 1,742cc.

Since we know we can overbore today's Hayabusa by 4mm,
we could have the bike up to about 1,900cc with little expense.

A small stroke of an additional 4mm,
allows a displacement of over 2000cc.

If a STOCK 1300 will run 192 MPH (like mine did @ Maxton),
could a "prepared" 2000cc variant post 300HP and 270 MPH
WITHOUT a turbo, and plenty of running room ?

A decent GEN I, so many years ago, might show
165 RWHP on a good dyno, Increasing for a 10%
drivetrain loss, that would be maybe 185 crank HP.

If the volumetric efficiency stayed the same
(not a sure bet, but we've got 15 years more technology in hand)
that would be 250 HP
in street legal trim.

No Blower, no baloney.

in 2000cc form, same assumptions,
2000cc = 275 HP

Please lord, pick me !
 
Motorcycle "downforce" wings aren't new.

Seems to me that the FIM outlawed "wings" about 40-50 years ago.

Colin Seeley of some such luminary suggested - and raced a protype - of
a bike with a big "downforce" wing over the back seat.

When the rider slid forward for braking or acceleration,
the wing went into downforce mode. When the rider
slipped back, the wing went into "low drag" mode.

The FIM banned the wing mostly on safety grounds,
thinking the wing could do harm to other riders.

Cool, I did not know that.
I have seen wings on land speed racers, but never track bikes.





I still think the H2 should be nic named "The Flying Nun". :D
 
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