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02-18-2013, 09:48 AM
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Join Date: Dec 2005
Location: Mahomet, Illinois
Posts: 2,195
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I didn't change a thing ...
I built one identical to the original poster's, including the pipe cap/carriage bolt arrangement, and it works great. When one of my flying buds saw the pipe cap/bolt arrangement, he did the same.... replacing an inferior approach he had used for the wing connection. He too is delighted with the pipe cap method. 
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Terry Ruprecht
RV-9A Tip-up; IO-320 D2A
S. James cowl/plenum
(Dues paid thru Nov '18)
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05-21-2014, 07:43 AM
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Join Date: Jan 2007
Location: USA
Posts: 256
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James King
RV-7
919
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05-21-2014, 09:10 AM
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Join Date: Mar 2014
Location: Laguna Hills, CA
Posts: 1,805
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Quote:
Originally Posted by beav
I built a set of jacks this week. The bases are 4" channel with 1"x1.5" rectangular tubing for the diagonals. The jack fits through a piece of 3" ID tubing at the top with a hole drilled and tapped for a bolt that takes up any play between the jack and the tubing. One of my first projects with the MIG welder and they turned out pretty nice.

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Very nice.  They look sturdy enough to change the wheels on an A380!
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Doug
RV-9A "slider"
Flew to Osh in 2017, 2018 & 2019! 
Tail number N427DK
Donation made for 2020
You haven't seen a tree until you've seen its shadow from the sky -- Amelia Earhart
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05-21-2014, 11:22 AM
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Join Date: Jul 2005
Posts: 1,347
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You guys are making it harder than it needs to be.
Grab a 12 point socket that is nicely bigger then the jack ram (so it doesn't bind up).
Put some HDPE tape on a big washer (to protect the wing paint).
Put a bolt through the socket and washer and into the tie-down hole and snug up.
Put the ram of the jack into the socket.
Jack it up!
Won't slip off. Ever. If it does, you seriously messed something up!
No mods to the jack ram necessary

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Mike W
Venice, FL
RV-6A. Mattituck TMX O-360, FP, GRT Sport EFIS, L3 Lynx NGT-9000
N164WM
N184WM reserved (RV-8)....finishing kit in progress. Titan IOX-370
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05-21-2014, 03:05 PM
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Join Date: Jan 2005
Location: Venice, Fl
Posts: 1,020
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I use something similar to what fl-mike suggests. However......
OK, So I need opinions on jacking like in the photos.
Quick and easy. Flat tire repair on a friend's RV-8. He taxied off runway with the flat. The line guys came out. Jacked the plane using the foam block. Said they use it all the time. Never a problem.
Seems like the ideal solution and allows for "creep" on a tail dragger. Seems like it would work great for general maintenance, bearings, tires, wheel pants, etc.
What can go wrong? Just asking because I don't know.
Rule out "foam block can crush or break" because it ain't happening. Very tuff stuff.

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Gary Palinkas - Gman.... VAF #161
Venice, Fl
RV-6 "Sassy" Flying 400 hrs since Oct 2011
Lycoming 0-360 A1A, FP Sensenich Prop
SARL #19 .... Van's Calendar March 2015
Although exempt several ways, =VAF= Dues paid to support this awesome site/family
Last edited by GLPalinkas : 05-21-2014 at 03:07 PM.
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09-13-2014, 08:05 PM
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Join Date: Jan 2005
Location: Hopkinsville, KY
Posts: 957
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Got mine done!
Harbor Freight's cylinder jacks are now red. I got my platform legs cut and welded, and I had the support legs top attach bracket plasma cut. I am very pleased with the final product. Getting the steel platform legs welded and the top bracket made, ended up costing a little more but it still came in at about $150. much cheaper than ordering one online. I only jack one side at a time so one is all I need.

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Bobby Hester - Builder/Pilot/A&P
Surfing the web from Hopkinsville, KY
N857BH RV7A XP-O360 - Garmin G3X ADS-B IN/OUT 2020 Compliant
Web site: http://www.newtech.com/bobbyhester/RVSite.htm
Dec. 2019 VAF donator - alot better than any magazine subscription
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01-04-2015, 09:05 AM
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Join Date: Sep 2007
Location: Hudson County, NJ
Posts: 1,092
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Bob, I like your design. Do you have any close-up shots of the top bracket?
Is anyone having any trouble with the length of the jack under a RV-7 wing. When I had my flat recently, I took a quick measurement of the space between the bottom of the wing at the tie-down point, and the ground and at best it was 24". But it looks like everyone else is having no trouble even though the jack is 23" or so itself???
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01-04-2015, 03:20 PM
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Join Date: Jan 2005
Location: Hopkinsville, KY
Posts: 957
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I'll try to get you a picture next time I'm at the hangar. It worked out great!
Just found this one, if that helps:

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Bobby Hester - Builder/Pilot/A&P
Surfing the web from Hopkinsville, KY
N857BH RV7A XP-O360 - Garmin G3X ADS-B IN/OUT 2020 Compliant
Web site: http://www.newtech.com/bobbyhester/RVSite.htm
Dec. 2019 VAF donator - alot better than any magazine subscription
Last edited by bhester : 01-04-2015 at 07:37 PM.
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01-04-2015, 03:56 PM
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Join Date: Sep 2007
Location: Hudson County, NJ
Posts: 1,092
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That's perfect. Thanks!
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01-04-2015, 04:03 PM
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Join Date: Mar 2005
Location: DVT Phoenix
Posts: 1,187
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Here are mine, built sometime ago . They were very expensive but they come with a mig welder. :-) I have since been learning to use it. Larry

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