Worth A Thousand Words - Kawasaki Ninja H2 Forum
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post #1 of 33 Old 08-20-2018, 07:16 AM Thread Starter
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Worth A Thousand Words

I'll just put this here.
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post #2 of 33 Old 08-20-2018, 08:07 AM
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Chain needs a lube ��
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post #3 of 33 Old 08-20-2018, 12:53 PM
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Originally Posted by BobC View Post
I'll just put this here.


Well done Bob


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post #4 of 33 Old 08-20-2018, 01:16 PM
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That says it all!! That really is cool.
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post #5 of 33 Old 08-20-2018, 04:54 PM
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oh you can put any image you want, but MCN knows thats a 260Kg pork and way slower than a Ducati V4
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post #6 of 33 Old 08-21-2018, 07:35 AM Thread Starter
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oh you can put any image you want, but MCN knows thats a 260Kg pork and way slower than a Ducati V4
Well then the aptly named MCN (More Crap than News) must be right.
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post #7 of 33 Old 08-21-2018, 01:07 PM
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Well then the aptly named MCN (More Crap than News) must be right.
of course they are!, The V4 is 75Kg full of fuel and goes 525kmh... latest news from MCN!
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post #8 of 33 Old 08-21-2018, 05:59 PM
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Awesome result Bob -well done !
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post #9 of 33 Old 08-21-2018, 07:31 PM
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Drag Coefficient!, people talk about the looks of the H2 but what's it's drag coefficient compared to other bikes. HP is one thing but to use it without wasting it is another. This is another reason the bike is fast, just look at others, still using shapes for years gone by. Don't question rider position but compare wind tunnel tests. KHI spent a lot of time getting the shape right but when reviews come out in mags one of the most important aspects oh the H2 just get a passing mention. So much for the so called experts having credibility, more like biased opinion.

I have always been interested in ballistics and I know how shapes can suck energy. If you have an H2R and want to do a 1/4 mile then take off the wing-lets as they use energy to put downward pressure on the front, where does this energy come from, the sky? The H2 looks different for a reason. And another thing, shorting up the bike by removing tail pieces may induce more drag and make your bike slower as the air flowing around the bike and rider has some laminar flow and without breaking that flow up properly allowing it to disperse over distance it will create a vacuum behind the rider. Bike might look good but have you made it slower?
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post #10 of 33 Old 08-22-2018, 06:10 AM Thread Starter
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I had a conversation with the Japanese H2 design and build team and one of the topics I raised was the aerodynamics of the bike.

My point was that while the H2 itself is undoubtedly a slippery shape they did the wind tunnel tests with just the bike and a design envelope of "up to 186mph". Even the track-biased H2R with it's wings generating front downforce for cornering, while not being speed restricted, wasn't designed for higher speeds. It all changes when you put a rider aboard who wants to go Land Speed Racing and if that rider is average sized there's nowhere to hide.

The front fairing is low and narrow, meaning your shoulders are out in the wind blast. The bike is also short and elbows and knees are vying for the same space, meaning you cannot tuck in as well as on some other bikes. I don't think that removing the plastic tail piece makes much difference at all, I've tried it with and without. It's not the same as the long-tail fairings you see being used on the Hayabusa for LSR.

Look at the attached image of me at +200mph. Look at the shoulders of my leathers, armoured and still pushed right in by the force of the wind. I can't get any lower as my chest and the chin of my helmet are on the tank and I can't get my arms in a bit more because my knees are there. This is the best tuck I can manage on an H2 being of "normal" size. (5' 10")

The biggest obstacle to the H2 going faster is aerodynamics. I'm not theorising, I speak from the experience of the last three seasons of LSR on one. I do agree about the H2R wings though, I beat one last weekend by a margin and he had a lot more power, a claimed 290bhp at the wheel.
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Last edited by BobC; 08-22-2018 at 09:28 AM.
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