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wb2ssj(at)earthlink.net Guest
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Posted: Wed Jul 09, 2008 4:20 pm Post subject: ATT. NICK |
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Nick, I am trying to come up with a combination tie down point / jack pad. The access to the wing is thru the bell crank hole which is 98" from the fuse. I would expect to have 400 lbs. on the jack pad and was wondering if the spar would support that weight in that area. How do you now support the plane for service of a tire or gear ? Your input would be greatly appreciated. Tex
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N1BZRich(at)aol.com Guest
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Posted: Wed Jul 09, 2008 5:57 pm Post subject: ATT. NICK |
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Hi Tex,
Let me jump in here and suggest that you will probably need to provide Nick one additional piece of info for him to be able to figure the actual forces you are talking about. That additional info is - how are you going to use the jack points? What I mean by that is will you only use one at a time to raise just one main wheel off the ground, or do you intend to pick up the complete airplane by using both wing jack points and a tail stand? If you are only gong to lift one main wheel and leave the other main wheel and the nose wheel on the ground than you don't have a 400 pound load near the area of the aileron bell chank.
So far I have seen no need for a jack point as there are two simple ways to pick up one wheel for maintenance. One way, just have someone get under one wing (on their hands and knees) out about mid span or more and push up under the spar. When they have the main gear up, place a padded crate (or saw horse -something to hold the wing up) so your buddy is not on his knees for too long a time. The other way, is to find a small scissor jack (like came with the older Corvettes) that will actually fit under the main gear leg bottom fitting and just jack up that wheel. I have also used a floor jack but sometimes I need to air the tire up a little to get the floor jack to fit under the lower gear leg fitting. I have used all of the above procedures on both Lightnings and Esquals with no problems.
But your idea of having a jack point in each wing will certainly come in handy when you are doing landing gear retract test.
Blue Skies,
Buz
Get the scoop on last night's hottest shows and the live music scene in your area - Check out TourTracker.com!
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pequeajim
Joined: 03 Sep 2006 Posts: 708 Location: New Holland, PA
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Posted: Wed Jul 09, 2008 6:39 pm Post subject: ATT. NICK |
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Another way is to use a cheap ATV jack. They go down flat and lift fairly high. You can always put a box with padding on top of it to increase the height. I found one used for $35.00.
Here’s a link to what they look like.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=2792
Jim!
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of N1BZRich(at)aol.com
Sent: Wednesday, July 09, 2008 9:55 PM
To: lightning-list(at)matronics.com
Subject: Re: ATT. NICK
Hi Tex,
Let me jump in here and suggest that you will probably need to provide Nick one additional piece of info for him to be able to figure the actual forces you are talking about. That additional info is - how are you going to use the jack points? What I mean by that is will you only use one at a time to raise just one main wheel off the ground, or do you intend to pick up the complete airplane by using both wing jack points and a tail stand? If you are only gong to lift one main wheel and leave the other main wheel and the nose wheel on the ground than you don't have a 400 pound load near the area of the aileron bell chank.
So far I have seen no need for a jack point as there are two simple ways to pick up one wheel for maintenance. One way, just have someone get under one wing (on their hands and knees) out about mid span or more and push up under the spar. When they have the main gear up, place a padded crate (or saw horse -something to hold the wing up) so your buddy is not on his knees for too long a time. The other way, is to find a small scissor jack (like came with the older Corvettes) that will actually fit under the main gear leg bottom fitting and just jack up that wheel. I have also used a floor jack but sometimes I need to air the tire up a little to get the floor jack to fit under the lower gear leg fitting. I have used all of the above procedures on both Lightnings and Esquals with no problems.
But your idea of having a jack point in each wing will certainly come in handy when you are doing landing gear retract test.
Blue Skies,
Buz
Get the scoop on last night's hottest shows and the live music scene in your area - Check out TourTracker.com!
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mark(at)flylightning.net Guest
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Posted: Thu Jul 10, 2008 4:18 am Post subject: ATT. NICK |
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Tex,
In the shop we use the "handy jack" that can be found here: http://aviationtechproducts.com/html/products_pics.html#RVJACK. It uses a cable that wraps around the axel on the inboard side of the wheel. This device along with a floor jack works very well for us.
If we've needed to service the gear leg or axel then we've used Buz's method.
Hope this helps.
Mark
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wb2ssj(at)earthlink.net Guest
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Posted: Fri Jul 18, 2008 11:21 am Post subject: att. Nick |
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Nick, the horn arrived just as I was carring the evevator out to the plane. Great timing.Thanks again for the fast service, see you all at osk. Tex
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