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  #1  
Old 06-02-2008, 01:26 PM
smokyray's Avatar
smokyray smokyray is offline
 
Join Date: Jan 2005
Location: T38
Posts: 2,018
Default Canopy Breaker...

For those of you who wonder what you would do if you found yourself on your back, upside down in a cornfield trapped in your pride and joy? Here is what I carry in my Rocket...

Rob Ray
HR2

http://www.uscav.com/ProductInfo.asp...ucts-_-SF-_-V1
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  #2  
Old 11-14-2022, 06:37 PM
prkaye prkaye is offline
 
Join Date: Jun 2006
Location: Ottawa, Ontario, Canada
Posts: 2,252
Default

A very old thread, but i wanted to revive it because i'm looking for advice on a tool to carry in the RV to break the canopy in the event of an accident and being unable to open it. ACS has this tool: https://www.aircraftspruce.ca/catalo...lickkey=248952
But that appears to be just for clearing shards out of the way of a canopy that is already broken. The link on the message above no longer works. Any suggestions for a tool to carry for this purpose?
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RV9A (SB)
Flying since July 2010!
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  #3  
Old 11-14-2022, 07:28 PM
scsmith scsmith is online now
 
Join Date: Jan 2008
Location: Ashland, OR
Posts: 3,356
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Yes, I think it is great to revive this thread.

A particular concern is that being upside down, hanging from your harness, it would be hard to get any significant 'swing' to a hammer-type device. I doubt I could get enough striking force to break anything.

There are spring-loaded punch devices that are pretty good on tempered glass, but I don't think they would help much on acrylic.

I could imagine a CO2 cartridge powered thing kind of like an epi-pen that would shoot a small shot shell charge or maybe a single device that is maybe cruciform shaped which would introduce radial cracks that could then be broken out?
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Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet" Flying since Sept. 2009
Hobbs 725
also
1/4 share in 1959 C-182B (tow plane)
LS6-15/18W sailplane SOLD
bought my old LS6-A back!!
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  #4  
Old 11-14-2022, 08:07 PM
bbsdad bbsdad is offline
 
Join Date: Oct 2018
Location: tx
Posts: 150
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I purchased a small survival hatchet, for just such an incident. About 6 inch long and has an axe head on one end with hammer on the other. Multiple tools as well. Came with a nice Cary case. Got it from a company in Canada. Reasonable price. Tho I donít remember the name of the company. Should not be hard to find. Just look for survival equipment.

Hope this helps
RD
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  #5  
Old 11-14-2022, 08:14 PM
scsmith scsmith is online now
 
Join Date: Jan 2008
Location: Ashland, OR
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Quote:
Originally Posted by bbsdad View Post
I purchased a small survival hatchet, for just such an incident. About 6 inch long and has an axe head on one end with hammer on the other. Multiple tools as well. Came with a nice Cary case. Got it from a company in Canada. Reasonable price. Tho I donít remember the name of the company. Should not be hard to find. Just look for survival equipment.

Hope this helps
RD
I have a hard time imagining how I am going to swing a hatchet inside the cockpit of an RV-8, hanging upside down.
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Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet" Flying since Sept. 2009
Hobbs 725
also
1/4 share in 1959 C-182B (tow plane)
LS6-15/18W sailplane SOLD
bought my old LS6-A back!!
VAF donation Dec 2022
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  #6  
Old 11-14-2022, 09:15 PM
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fl-mike fl-mike is online now
 
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Just look at it sideways, that's what makes them crack during construction....
Or, aim for a bird!

Signed,
Mr. Helpful
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  #7  
Old 11-14-2022, 09:30 PM
JDeanda JDeanda is offline
 
Join Date: Apr 2013
Location: Ventura, CA
Posts: 387
Default We Tried Some Out

Sorry, the video we were going to make from our tests didnít happen but here are some findings: if youíre upside down, best to stay strapped in. The knurled, hand-held aluminum canopy breaker does not work well. The spring loaded center punch doesnít work well either. The automotive windshield hammer was poor. A hatchet was pretty good. We keep a survival hatchet under the co-pilotís seat.
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  #8  
Old 11-14-2022, 09:43 PM
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donaziza donaziza is offline
 
Join Date: Jun 2007
Location: Atlanta
Posts: 904
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I use a small Milwaukee Hackzall. Cut thru a solid steel ruler shaped metal bar, twice, with the same blade in about 90 seconds at HD where I bought it. Have it vecroed about where the rear seater's left ankle would be, (altho it doesn't get in his way) Oughta go thru the side of my 8 like a hot knife thru butter. Unless of course, I don't have a left hand anymore. Maybe I should velcro one on the right side too.
Regarding Post #5, at least in an 8, or a 4, I don't think one could get a good hit on the canopy due to not being able to throw your arm much. Maybe in a side by side, but not in a tandem. (Got the idea here on VAF years ago)
People have said " But yeah, what about running gasoline and sparks? I'd rather blow up, than burn to death slowly--- hopfully I'm out before that would happen.

Last edited by donaziza : 11-14-2022 at 10:01 PM.
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  #9  
Old 11-14-2022, 09:54 PM
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koupster koupster is offline
 
Join Date: Dec 2013
Location: SLC, UT (KBTF)
Posts: 389
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Make yourself a variant of this: https://www.worthpoint.com/worthoped...jet-2009847716
Steel quality isn't important here.
Put a slot in the backside of the blade to help breaking out pieces after you have a hole in it like "the snapper". htthttps://www.aircraftspruce.ca/cat...key=248952p://
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  #10  
Old 11-14-2022, 10:00 PM
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RV8JD RV8JD is offline
 
Join Date: Jan 2005
Posts: 743
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Some past references:
Demo of spring loaded glass breaker (doesn't work on Plexi) and Lifehammer (which does) https://youtu.be/fRvQxGl4kt4

https://vansairforce.net/community/s...d.php?t=178998

https://vansairforce.net/community/s...ad.php?t=58669

https://vansairforce.net/community/s...ad.php?t=60863

https://vansairforce.net/community/s...d.php?t=104197

https://vansairforce.net/community/s...ad.php?t=73558
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