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From: John Barrett <2thman1@gmail.com>
Subject: Re: [LML] Re: IVP Jacks
X-Original-Date: Mon, 28 Oct 2013 12:23:20 -0700
X-Original-To: Lancair Mailing List <lml@lancaironline.net>

Aircraft Spruce - no surprise.  The really good ones are Meyer, but sit down=
 before you price them.

John

Sent from my iPad


> On Oct 28, 2013, at 11:16 AM, Colyn Case <colyncase@earthlink.net> wrote:
>=20
> What's the best source of "good ones"?
>=20
> On Oct 28, 2013, at 12:36 PM, John Barrett wrote:
>=20
> Hi Greg,
>=20
> I made my jacks from Harbor Freight hydraulic cylinders with flat bottoms
> and welded up stands around them.  A lot of work and the cylinder hydrauli=
cs
> don't hold up all that well.   Also they are not as stable as the expensiv=
e
> commercial ones.  We were jacking up the plane outside for gear checks in
> Redmond a couple years ago and light winds were really scary.  I only use
> inside the hangar since then and have modified them to make them a little
> more stable.  They are workable and now I'm pretty comfortable with them,
> but investing in some good ones is not a bad alternative.  The aircraft  h=
as
> to go up so high and the jack points are close enough together that light
> lateral forces will cause things to sway and wobble - makes me pucker
> sometimes. =20
>=20
> The episode in the photo was on concrete apron that was not at all flat -
> that added to the instability and was not a good plan. =20
>=20
> John Barrett
> N31VP
>=20
>=20
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s:
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