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01-10-2012, 05:46 AM
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Join Date: Oct 2010
Location: Germany
Posts: 36
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Tip up canopy jettison handle
I like the idea of being able to jettison the tip up canopy in case of an emergency but the standard T-handle location is both unsightly and impractical. I have noticed that most tip up builders have done away with the jettison handle on the panel and moved it to the sub panel where it is used mainly for canopy removal for maintenance.
Are there any bright ideas out there for relocating the jettison handle to a more convenient location whilst retaining the jettison function? Is there perhaps an aftermarket retrofit?
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01-10-2012, 05:53 AM
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Moderator/Tech Counselor
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Join Date: Jan 2005
Location: East Troy, WI
Posts: 1,983
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When I put mine in, I turned it 90 deg. so the handle was horizontal instead of vertical. That made it a little less obtrusive. Trying to relocate the handle might require a lot of linkage and could be less reliable.
Roberta
__________________
Roberta Hegy
Built/Flew an RV-7A
Air Troy Estates, East Troy, WI
Ford Expedition and TRICE "Q"
Built Glen L "ZIP" Classic Outboard Runabout and Super Spartan Hydroplane
Glen L Torpedo
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01-10-2012, 05:59 AM
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Join Date: Nov 2007
Location: Cary, N.C.
Posts: 1,216
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I kept the original pin retraction feature, but implemented it with a long vertical rod on the front side of the sub-panel. This new rod extends below the sub-panel and a lever arm is attached at this point that allows the original function to be retained. The new jettison handle is out of sight and accessible by the pilot underneath the instrument panel.
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Noel
RV-6A N6NF
tip-up
flying
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01-10-2012, 09:42 AM
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Join Date: Oct 2005
Location: Portland, OR
Posts: 180
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I am tossing the handle from Van's and will install one of these and paint it red or add yellow stripes (the handle is made from aluminum): http://www.aircraftspruce.com/catalog/appages/a1870.php
It allows you to put it almost where ever you want on the panel too.
__________________
James Jula - CFI/II/MEI - N713JL RV-7A First Flight 10/12/15 - "What is chiefly needed is skill rather than machinery." Wilbur Wright, 1902
Last edited by jmjula : 01-10-2012 at 09:47 AM.
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01-10-2012, 11:02 AM
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Join Date: Jan 2005
Location: northwest georgia
Posts: 315
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What do you intend to do with the gas struts?
I doubt the jettison feature would work unless you didn't install the struts.
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Cary Rhodes
Taylorsville, Georgia
N203CR
Van's RV-7
First Flight April 2004
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01-10-2012, 11:17 AM
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Join Date: Sep 2009
Location: Aloha, or
Posts: 282
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removable?
I would like to have a removable handle. Maybe a grab loop of some kind. Would be horrible ugly and annoying, but I think perfectly acceptable for the few times that I would fly with a parachute. A receptacle of some sort would take less panel space than a T-handle.
I can't tell from the description what the lock release button does. Does it keep the handle from moving or does it release the handle from the mechanism entirely?
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James Bagley Jr
RV6A flying
RV6 #2 tail done and wings done
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01-10-2012, 12:00 PM
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Join Date: Oct 2005
Location: Portland, OR
Posts: 180
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Quote:
Originally Posted by caryr
What do you intend to do with the gas struts?
I doubt the jettison feature would work unless you didn't install the struts.
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My plan for when I wear a parachute, is to disconnect the struts on the ground. I will likely add 'wing' nuts to the strut attachment points to make that easier to accomplish. No one has yet to eject from an RV in flight while wearing a parachute (that I know of), but people do often enough in other aerobatic aircraft. Know your exit procedures well, practice them on the ground regularly.
__________________
James Jula - CFI/II/MEI - N713JL RV-7A First Flight 10/12/15 - "What is chiefly needed is skill rather than machinery." Wilbur Wright, 1902
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01-10-2012, 12:03 PM
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Join Date: Oct 2005
Location: Portland, OR
Posts: 180
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Quote:
Originally Posted by jbagley
I would like to have a removable handle. Maybe a grab loop of some kind. Would be horrible ugly and annoying, but I think perfectly acceptable for the few times that I would fly with a parachute. A receptacle of some sort would take less panel space than a T-handle.
I can't tell from the description what the lock release button does. Does it keep the handle from moving or does it release the handle from the mechanism entirely?
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The lock button assures it won't open accidentally in flight, it just prevents the handle from moving. Van's handle uses a spring to assure that won't happen, but a spring isn't practical with the 1780 style handle. That handle will also work good for a parking brake.
__________________
James Jula - CFI/II/MEI - N713JL RV-7A First Flight 10/12/15 - "What is chiefly needed is skill rather than machinery." Wilbur Wright, 1902
Last edited by jmjula : 01-10-2012 at 12:06 PM.
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01-10-2012, 01:36 PM
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Join Date: Oct 2010
Location: Germany
Posts: 36
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Thanks for the quick response! Turning the handle 90 degrees is one of the options I have been considering but am not thrilled about. I'm not concerned about the gas struts as I don't believe they have a chance to withstand the aerodynamic forces unless you're in a flat spin. I was however hoping that some ingenious RV builder out there has come up with some snazzy aftermarket device.
Up to now the horizontal handle seems to be the best option but it still is somewhat in the way.
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01-10-2012, 01:42 PM
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Join Date: Oct 2010
Location: Germany
Posts: 36
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Noel do you have some photographs of the mechanism you built? It sounds interesting. Are you satisfied with the way it functions?
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