Katana of the Month - July 2007 - FASHER
 

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At the Track Some Katana's see track duty. Some owners have multiple bikes. This is the place to chat about track days.

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Old 07-04-2016, 12:46 PM   #1
buffalobill
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Default Wind buffeting at 100MPH & over?-750Kat

Ok, on the track I had the 750 Kat up at 130MPH, plenty of wind pushing my helmet up. Seems to be coming over the front of the tank, because I feel it pushing up under my chin. No amount tucking in seems to help.
Anybody ever make a spoiler or deflector to fix this?
Thanks
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Old 07-04-2016, 01:29 PM   #2
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Hmm, you'll have to fab some up and sell those.. I can see wher the fairing dips into the tank at the headlight would give a great tunnel effect. A nice aerodynamic bubble filler would work to redirect that. Now if it's coming from the headstock, that could be a minor challenge...
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Old 07-04-2016, 01:35 PM   #3
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Or, at those speeds, I chose to lie prone on the tank and peek above the windshield. Easy. At 158 mph on my ZZR1200 I just leaned forward, but I had no idea I was going near that fast...that bike was a scene changer.
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Old 07-04-2016, 02:12 PM   #4
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This seems to be particular to the pre 750 Katana. Zuma I'm sure your ZZR1200 would have all windage issues worked out for those speeds.
I have a 1982 GS1100G, a naked bike with only a small windshield and it does the same thing at about 80MPH and over. That I can understand.
Same problem, the windscreen forms a low pressure area behind it, so the wind comes up over the tank behind the windscreen, under the rider's chin and helmet.
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Old 07-04-2016, 08:51 PM   #5
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Not trying to seem like a penis, but maybe you just need more practice.
I remember fighting the wind while riding the interstate with no fairings. With all the fast moving traffic its easy to occasionally exceed 100mph. Eventually you should get to the point were it won't bother you.
EDIT: My Nolan helmet has a detachable chin spoiler. Some thing like that may provide some help too.
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Old 07-04-2016, 09:13 PM   #6
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Bill needs more practice, Wha??!! yup, keep ridin Bill.....
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Old 07-04-2016, 11:23 PM   #7
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Not trying to break balls, but 150mph is sort of like learning to ride again.
Like I was saying, try riding with out the fairings or some thing. Maybe that will help build tolerance.
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Old 07-04-2016, 11:28 PM   #8
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Ok.....here's the problem, the katana isn't an SS bike. It wasn't meant for what he's doing with it, so design is the problem.
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Old 07-05-2016, 12:30 AM   #9
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What kind of helmet Bill ?
Here are some helmet fixes:
http://billyscrashhelmets.com/wp-con...ash-helmet.jpg
http://www.southbayriders.com/forums...hments/199463/
http://www.proline-sports.co.uk/acatalog/PL82-lge.gif
https://encrypted-tbn2.gstatic.com/i...zBalpWq39DXJ4g
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Old 07-05-2016, 01:05 AM   #10
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