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06-06-2017, 01:42 AM
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Join Date: Jul 2010
Location: NSW Australia
Posts: 298
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Yep, that's about 0.0087".
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Pete
RV-9 "Cloud tinnie"
Registered VH-EAB
Flying Phase 2
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06-06-2017, 02:43 AM
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Join Date: Feb 2005
Location: LSGY
Posts: 3,200
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RV8 windscreen
Hi Lance, could you make a thicker windscreen for an RV8 that would be more resistant to bird strikes? Agree that a birdstrike that comes into the cockpit is a bad luck event, but it seems like a thicker windscreen would reduce the risk. Perhaps a flat one, not a bubble like the standard windscreen? Not protruding into the baggage space?
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06-06-2017, 12:33 PM
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Join Date: Aug 2010
Location: McAlpin, FL
Posts: 253
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Hey Mickey,
As mentioned in my prior post, I doubt that there's much to be gained by going to 1/4 vs 3/16 (especially after forming)... That being said, undoubtedly there's a thickness that will stop a bird, even a turkey vulture. How thick to do that? I have no idea, but it will be thick enough that it will create other issues, especially if you try to keep the original thickness from the roll bar back. There will be an issue at the intersection with mismatched height (all the way around) and unless it's a clear canopy, the tint will be noticeably darker. I'm sure there's other problems that will arise as you try to install it...
At some point due to thickness, the windshield will survive, but not on the airplane. Imagine a 25 lb turkey vulture hitting the windshield at 170 kts, and ripping out that handful of little fasteners...
As far as making a flat wrap, yes I could do it, but I doubt I would sell enough of them to justify the time spent on tooling up for it. I recall a member here did it himself and it came out fine, and I imagine I would find myself competing with enterprising individuals who would make their own.
Lastly, I could form a thicker canopy overall, but it's going to get heavy pretty fast as the thickness goes up.
All that being said, if folks want a thicker canopy, I'll do it (even if I hate weight!).
Lance
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Lance Logan
McAlpin, FL
Plane at FL10
Scratchbuilt Biplane
Preceptor N3 - Sold
Zenith Zodiac 601HD - Sold (good riddance)
Kitfox IV - Sold my share, but loved that plane
RV8A Sold! Loved the plane, but not the nosewheel!
RVX (RV6/4) Sold
Cherokee 180 pickup truck
RV8 Fastback
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06-06-2017, 01:32 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Quote:
Originally Posted by judoka5051
The RV6 I fly now has a clear one, and it's like flying a terrarium, hot, hot, hot.
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Just to clarify erroneous info that is repeatedly spread.....
If the RV-6 you speak of has a standard Van's canopy it is not clear (hold a white piece of paper up to edge and it is obvious).
The standard kit canopies have always been tinted but they are not a dark tint because they are manufactured to meet the light transmit-ability requirement set by the FAA for night flight.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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01-30-2019, 10:19 AM
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Join Date: May 2018
Location: Gallatin TN
Posts: 33
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finish kit
I'm getting ready to to order my finishing kit. Anyone have some updates to this thread?
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EyeDoc
14-499 221RV reserved
Paid
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01-30-2019, 05:06 PM
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Join Date: Apr 2008
Location: Lake Havasu City AZ
Posts: 2,393
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Windshield
Really no such thing as a birdproof windshield. Lear 23 had a thick lexan windshield but not certified to meet bird strike requirements. Large bird went thru the windshield and killed the pilot. Lunken Airport in Ohio many years ago, right after takeoff at relatively low speed.
Airline windshields meet a certification requirement for surviving bird strikes of a certain size, but not extremely large birds.
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01-31-2019, 07:11 AM
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Join Date: May 2011
Location: Atlanta, GA
Posts: 240
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Airliner front windshields are also two panes of thick glass separated by a heating element. The heat is to allow the glass to have some plastic properties in the event of a bird (or now, unfortunately...drone) strike. There is a significant speed limitation if the heat is inoperative and a very short time period allowed for replacement. That is how important the FAA considers it.
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RV4
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01-31-2019, 10:00 AM
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Join Date: May 2014
Location: KBVY Massachusetts
Posts: 1,100
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Quote:
Originally Posted by rv8ch
Hi Lance, could you make a thicker windscreen for an RV8 that would be more resistant to bird strikes? Agree that a birdstrike that comes into the cockpit is a bad luck event, but it seems like a thicker windscreen would reduce the risk. Perhaps a flat one, not a bubble like the standard windscreen? Not protruding into the baggage space?
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I don't have a wind screen in front of me so this may be the dumbest idea of all time but:
Can you remove a center section of a standard bubble windscreen and replace it with framing and a flat panel?
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Flying RV-8 N880BC
2019 Dues - happily paid.
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01-31-2019, 11:58 AM
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Join Date: Jun 2014
Location: Sherwood Park, Alberta
Posts: 77
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Anything is possible, that is why these are called Experimental aircraft.
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01-31-2019, 12:54 PM
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Join Date: May 2014
Location: KBVY Massachusetts
Posts: 1,100
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Quote:
Originally Posted by Gusmax
Anything is possible, that is why these are called Experimental aircraft.
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Well by "possible" I meant "Would it work and would it not be aggressively ugly" 
__________________
Flying RV-8 N880BC
2019 Dues - happily paid.
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