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  #1  
Old 10-07-2019, 01:05 PM
pa38112 pa38112 is offline
 
Join Date: Mar 2008
Location: Clarksboro, NJ
Posts: 708
Default Yes, you can open and close a slider in flight

This weekend my son was experimenting with his 6A trying to figure out why people claim you can not open and close the slider in-flight. What he discovered is that you can. He slowed up to 70mph indicated and opened the canopy without any issue. He said it closed fine until he got to about 2", then it would not go. What he discovered was that the pins that hold the rear of the slider in were flexed out, and would not align with the blocks that hold them. I am not sure what technique he developed to correct that, but now he has flown several times opening and close his slider in-flight. I will find out what his maximum speed has been...
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  #2  
Old 10-07-2019, 01:18 PM
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RWoodard RWoodard is offline
 
Join Date: Jan 2005
Location: Brighton, Colorado
Posts: 344
Default

Soon to be posted...

“WTB: One(1) slider canopy for an RV-6A”

Just kidding. I have no dog in this fight. That’s just the first thing that came to my mind.

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  #3  
Old 10-07-2019, 02:13 PM
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Mycool Mycool is offline
 
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Default post

Post a video...
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  #4  
Old 10-09-2019, 05:54 AM
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turbo turbo is offline
 
Join Date: Jan 2007
Location: Stuart, FL /Hartford, CT/Virgin Gorda,BVI
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Default

have no idea why you would want to test this.
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  #5  
Old 10-09-2019, 08:17 AM
rmarshall234 rmarshall234 is offline
 
Join Date: Jun 2008
Location: San Diego, CA
Posts: 164
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Quote:
Originally Posted by turbo View Post
have no idea why you would want to test this.

I'm a parachute rigger and I've often had RV pilots (whom I've suggested wear a parachute for formation flight) say...."you can't get the canopy open in flight anyway". I never bought into that theory and now this guy has proven that you can.

I think it's great that the OP's son, and others like him, are willing to take a little risk to challenge the status quo. It makes for a better world.
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  #6  
Old 10-09-2019, 08:44 AM
SuperCubDriver SuperCubDriver is offline
 
Join Date: Feb 2011
Location: Germany
Posts: 402
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When I tested my RV-7 and RV-8 I opened the canopy in flight at around 80-100 KIAS a few inches before I did the higher risk maneuvers testing the planes. During actual flight testing I had cutouts on the canopy rails where the rollers would clear the rails when the canopy is slid back a bit and pushed upwards. The main reason was to make sure and be prepared to leave the plane when wearing a parachute - just in case.
Of course there is an increased risk doing this just for testing because the rear of the canopy is only held to the rail with the sliding block when opened. I made sure I had a solid grip on the canopy when doing this.
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  #7  
Old 10-09-2019, 08:44 AM
moosepileit moosepileit is offline
 
Join Date: Dec 2010
Location: Floyds Knobs, IN
Posts: 522
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Replace front roller bolts with Pip pins/
Quick Release Ball Lock Pins.
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  #8  
Old 10-09-2019, 10:25 AM
Ralph Inkster Ralph Inkster is offline
 
Join Date: Feb 2008
Location: Calgary, Alberta
Posts: 551
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One day I experienced severe turbulence which resulted in an oxygen bottle I though was securely stowed, break loose & partially go thru the canopy. The airflow took the broke out plexi pieces and dinted the vertical stab approx. 6" up from the base.
My point being, if the whole canopy were ever to be released in flight, where would it go? My unexpected experiment above suggests it would most likely take the whole vertical stab & rudder with it.
So- from my above experience, opening the canopy voluntarily in flight is not anything I would do...
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  #9  
Old 10-09-2019, 10:41 AM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
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Quote:
Originally Posted by Ralph Inkster View Post
One day I experienced severe turbulence which resulted in an oxygen bottle I though was securely stowed, break loose & partially go thru the canopy. The airflow took the broke out plexi pieces and dinted the vertical stab approx. 6" up from the base.
My point being, if the whole canopy were ever to be released in flight, where would it go? My unexpected experiment above suggests it would most likely take the whole vertical stab & rudder with it.
So- from my above experience, opening the canopy voluntarily in flight is not anything I would do...
I agree with you Ralph

The sliding canopy as designed, is meant to be functional and light weight.
With the way it can shake around during a ground run-up I would not be purposefully opening one in flight unless i was wearing a chute and was planning to use it.
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  #10  
Old 10-09-2019, 10:55 AM
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Mel Mel is offline
 
Join Date: Mar 2005
Location: Dallas area
Posts: 10,397
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Quote:
Originally Posted by rvbuilder2002 View Post
I agree with you Ralph
The sliding canopy as designed, is meant to be functional and light weight.
With the way it can shake around during a ground run-up I would not be purposefully opening one in flight unless i was wearing a chute and was planning to use it.
Or maybe just prior to "ditching".
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