rgraham(at)ozemail.com.au
Guest
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 Posted: Tue Jul 17, 2007 1:44 am Post subject: Jack points |
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We jack up different types of aircraft several times a week for tyre
change, retraction tests, gear inspection, etc, and none of them will
balance without either holding the tail down, or holding it up, depending
on the aircraft.
Depending on which way the gear retracts, the balance can also shift fore
or aft during retraction- a single engine RG Cessna is downright scary when
the gear is moving!!
We have half a 44gal drum filled with concrete with a post embedded in it
for nose gear aircraft, but for a tyre change on a taildragger, we tie the
tail wheel to a ring set in the ground, and jack on side at a time at the
jack point - this includes a couple of RV's we maintain for non-builder owners.
The main thing to watch is the angle of the jack on the jack point - make
sure it won't slip off, and you sometimes have to raise the tail to keep a
good angle.
Ron Graham (F1 #105 Sydney, Oz)
| Quote: | Time: 11:51:06 AM PST US
From: mark936(at)webtv.net
Subject: Re: Harmon Rocket HR-2 jack points
how are you guys lifting or jacking your planes up for tire changes?
I got ready to use a wing jack on the tie down point and John Harmon
shot that down, said aft of CG and 3/16th bolts.
Lots of RV TW guys are using wing jacks and jacking plane off ground
albeit lighter by two hundred pounds.
I didn't want to stress it by lifting it by the engine mount .
Just curious about different methods.
thx
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