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  #1  
Old 01-21-2016, 05:31 PM
Piper J3's Avatar
Piper J3 Piper J3 is offline
 
Join Date: Nov 2014
Location: Hinckley, Ohio
Posts: 1,527
Default Canopy Latch Question...

I have seen a picture of a RV-12 canopy latch handle where the strike plate ends up between the loops of the handle. On my 12 (SN 120058) the handle has a tab on one end and this is what engages with the strike plate. I’m wondering if there was a design change somewhere along the way. Sorry for lengthy (poor) description. I wish VAF allowed easy file attachments so I could just show a pic. Thanks in advance...

I believe the photo below is the new design with striker plate between loops of the handle.

https://drive.google.com/open?id=0B9...VQ5VzBCUGFVR2M
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Jim Stricker
Hinckley, Ohio (1OA2)
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
RV-12 E-LSA #120058 AWC July 2012 N633CM
RV-12 Bought Flying Oct 2015 with 48TT - Hobbs now 512

LSRM-A Certificate 2016
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H

Last edited by Piper J3 : 01-22-2016 at 05:43 AM.
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  #2  
Old 01-22-2016, 05:43 AM
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Piper J3 Piper J3 is offline
 
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Default

Added photo to original post above...
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Jim Stricker
Hinckley, Ohio (1OA2)
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
RV-12 E-LSA #120058 AWC July 2012 N633CM
RV-12 Bought Flying Oct 2015 with 48TT - Hobbs now 512

LSRM-A Certificate 2016
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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  #3  
Old 01-22-2016, 06:12 AM
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magiccarpet magiccarpet is offline
 
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Location: Switzerland, Europe
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Default

sent request for permission to access the image
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  #4  
Old 01-22-2016, 06:40 AM
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Piper J3 Piper J3 is offline
 
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Default

Sorry guys. Google Drive isn't letting me change sharing permissions. Bad computer day...
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Jim Stricker
Hinckley, Ohio (1OA2)
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
RV-12 E-LSA #120058 AWC July 2012 N633CM
RV-12 Bought Flying Oct 2015 with 48TT - Hobbs now 512

LSRM-A Certificate 2016
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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  #5  
Old 01-22-2016, 07:14 AM
PilotBrent PilotBrent is offline
 
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Default Suggestion

Quote:
Originally Posted by Piper J3 View Post
Sorry guys. Google Drive isn't letting me change sharing permissions. Bad computer day...
Suggest you use TinyPic.com and post the image on VAF directly
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  #6  
Old 01-22-2016, 11:15 AM
Ex Bonanza Bucko Ex Bonanza Bucko is offline
 
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Location: San Diego, California
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Default

I have an SLSA RV12 bought from Van's. I didn't notice how the handle was used in the latch.....tab or inside the handle loop...I only knew it was closed and the green light was on. Then the light went out in flight...canopy didn't come open. I messed around with it on the ground and now I see that the latch will only be secure when the closure is inside the loop....at least on my bird.

It takes a little muscle to get it closed however.

EBB
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  #7  
Old 01-22-2016, 12:09 PM
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Piper J3 Piper J3 is offline
 
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Default

Quote:
Originally Posted by PilotBrent View Post
Suggest you use TinyPic.com and post the image on VAF directly
Here from TinyPic...

Thanks I learned something new today with TinyPic. Anyway, as you can see in the pic... the strike plate is within the handle loop. On my plane the extension tab only engages the strike plate. The extension tab is at the end of the handle loop. I will use drawings mentioned by Mitch757 for Default Canopy Latch - Check Vans Notification 14-05-22. I'll try to sort this out as soon as weather permits. Thanks for all the help. VAF is great...
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Jim Stricker
Hinckley, Ohio (1OA2)
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
RV-12 E-LSA #120058 AWC July 2012 N633CM
RV-12 Bought Flying Oct 2015 with 48TT - Hobbs now 512

LSRM-A Certificate 2016
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H

Last edited by Piper J3 : 01-22-2016 at 12:15 PM.
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  #8  
Old 01-22-2016, 01:10 PM
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engineerofsorts engineerofsorts is offline
 
Join Date: Mar 2009
Location: Austin, Texas
Posts: 304
Default What is the issue?

From the looks of it, this is how its supposed to work. With the strike plate inside the hoop, closing the canopy up does pull the canopy and the roll bar together nice and snug. If it were on the outside of the hoop, it would be pushing them apart. I can't tell for sure, but it appears you used the standard LP-3/4 rivets to attach the UHMW strike plate (on the hook)--I believe it should be countersunk such that the hoop, when running over that UHMW plate, doesn't have to go over and LP-4-type rivet heads.

Thinking a bit more about it--the two rivets shown are just fine as LP rivets--I believe there is a third rivet which is countersunk hidden where the loop makes contact with it.
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Last edited by engineerofsorts : 01-22-2016 at 01:13 PM.
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  #9  
Old 01-22-2016, 01:44 PM
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Piper J3 Piper J3 is offline
 
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Default

Just to clarify...The pic above is not my plane. Mine has the striker plate on the outside of the handle loop. I don't have a picture of my latch. Something's not right with my setup. It works fine and it appears safe but apparently something is amiss. I'll report back when weather permits and also provide photo.
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Jim Stricker
Hinckley, Ohio (1OA2)
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
RV-12 E-LSA #120058 AWC July 2012 N633CM
RV-12 Bought Flying Oct 2015 with 48TT - Hobbs now 512

LSRM-A Certificate 2016
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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  #10  
Old 01-22-2016, 02:10 PM
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DonFromTX DonFromTX is offline
 
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Location: La Feria Texas
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Default

From what I have read, it would appear that someone building yours drilled the hole in the canopy in the wrong place!
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