What the next Gen GoldWing should be.... - Page 9 - Steve Saunders Goldwing Forums

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post #81 of 165 (permalink) Old 05-07-2014, 08:13 AM
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Sifting through some older aerodynamic points:
''... streamlined bikes could be dangerous because they shift the center of aerodynamic pressure in ways that impact stability.''

I already knew that large fairings would be a hindrance to stability in cross winds. I never thought that aerodynamics could make the Center of Gravity liquid until I watched a video on bikes Death Wobble (D.W.) where high frontal pressure lightened the front wheel.
I now have a higher windshield on my 1500 and thought the height created more vortexes and those vortexes created the wobble, apparently a wrong diagnosis but still could to a degree.
Until that D.W. video I never gave thought to bikes weight redistribution to the wheels. Lucky me I haven't hit high speeds yet. Definitely something to be aware of when designing fairings for bikes.

Thinking on that and cross winds acting on the larger fairing surface area. Is there a way the teardrop fairing could cheat side winds?
Quick thoughts turns to micro directional meshed panels and/or fish gills. In a direct wind air smoothly slips past the gills while side winds allows the air for flow through. Said gills should not be adjustable for obvious stability reasons.
So what else can be done to cheat side winds? Automatic mechanical vents? Example, large street banners are using punctured flaps to relieve air pressure. Maybe the fairings vents front openings could alternate it's open/close and open on the side of the cross wind thus relieving some of that airs side push? OR maybe the whole fairing could rotate a little in the direction of the wind? TUCKER anyone? (headlight turns in direction of the turn)

All this has needs to be addressed in any fairings design.
I have a lot more but wish to focus on one point at a time.

All this reminds me of an old term, "SPEED HOLES". Still sounds funny.
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post #82 of 165 (permalink) Old 05-07-2014, 09:36 AM
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Also, with all the plastic, do air can get thru so make a large sail-who about some louvers
in side pcs. Could help with heat trapped inside?
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post #83 of 165 (permalink) Old 05-07-2014, 02:03 PM
Join Date: Dec 2013
Location: Buffalo, NY
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Good points about fairings and side winds. Slab-sided bikes like the Goldwing are at a disadvantage here, and one way out is to have gaps in the design like the old Venture Royale had. That might not work for a Goldwing where every bit of space is needed to pack in engine/electronics and storage.
Another way is to round the side of the bike more so it isn't like a barn door, which may also look nice. Some air scoops in the fairing would also help deflect side wind.
I will draw something up and run the numbers in our virtual wind tunnel. If it adds up to a positive result, I will post sketches here based on that.
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post #84 of 165 (permalink) Old 05-07-2014, 02:16 PM
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Thank you Conceptguy.

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post #85 of 165 (permalink) Old 05-07-2014, 08:30 PM
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Dylan and Concept Guy Thanks for not only giving us a chance to say, but to listen than
put your talent to work.
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post #86 of 165 (permalink) Old 05-08-2014, 06:17 PM
(Rick Sheeley GWRRA)
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Very interesting..... I never heard of this...
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post #87 of 165 (permalink) Old 05-11-2014, 05:33 AM
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The ball is in your court Ed. Looking forward to seeing what you come up with.

Dave Heffernan.
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post #88 of 165 (permalink) Old 05-11-2014, 03:14 PM
Join Date: Dec 2013
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Working on it Dave............
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post #89 of 165 (permalink) Old 05-13-2014, 03:17 PM
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The only design feature I really want is easy access to be able to work on the bike. The rear wheel of the 1800 being like a car was a wonderful idea by Mother Honda. Maybe this front wheel could also be secured with lug nuts.

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post #90 of 165 (permalink) Old 05-13-2014, 04:22 PM
Join Date: Mar 2011
Location: Zeeland, Mi
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this should be low slung and have more leg room. The windshield needs to have a
good vent and be made to be able to take all the abuse a long distant rider can give.
The bags are ok as is, but could be more aerodynamic. try to keep the weight at about
750 to 800.
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