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If you are going to use a 2 post you definitely want to get advice from th=
e=20
manufacturer regarding slab thickness. My guess is you'll be told a =20
minimum of 6" reinforced concrete where the posts attach. In my case I =
asked=20
around local repair shops for the name of the company that did repair work=
=20
on their shop lifts. One guy's name (a man in business for himself) came=
up=20
a few times. I hired him and worked with him to install. Best $250 I eve=
r=20
spent. He said he had installed more than 100 in his career with zero =20
failures so I felt pretty safe. Mark L
=20
=20
In a message dated 1/29/2016 5:40:02 P.M. Eastern Standard Time, =20
tigers@autox.team.net writes:
The point of concern for the two post lift is typically the concrete. I=
=20
have no concerns about my 2 post for storage. Of course I have a very thi=
ck=20
concrete pad. If I had a four inch thick pad I would be concerned. Lifts=
are=20
awesome to work on cars. Although while I store cars on my two post lift=
=20
during the winter. Working underneath it gives me the heeby jeebies if I'm=
=20
using any real torque or big tools. Working on the suspension does not sca=
re =20
me.
Funny story. Back in the 70's a friend of ours had a two post lift he use=
d=20
in his mechanic shop. He too used a 4x4 to help hold the lift up in an=20
"emergency" in addition to the safety locks. He went to help a customer=
and=20
one of his techs went to lower the lift with an original 289 cobra on it.=
He=20
slightly raised the lift to remove the safety catch, the 4x4 tipped to be=
=20
underneath the car and when he lowered the lift the car tilted and then=
slid=20
off the lift landing between the posts on its side. Ouch!!
Sent from my mobile device
On Jan 29, 2016, at 3:01 PM, Jay Laifman via Tigers=20
<_tigers@autox.team.net_ (mailto:tigers@autox.team.net) > wrote:
:-) I have spent many an hour under cars on jackstands. On hindsight,=
=20
in California, not a good idea. I now almost exclusively use ramps if I=
=20
can. If I can't, I ALWAYS have something bigger than me under there too.=
I=20
have this large, long block of wood that some contractors left once. It'=
s=20
added protection. I put all wheels under too - including all the jack=20
stands and floor jacks under there. =20
Funny you mention sore arms. There are many times when I've been under=
a=20
car working away on my back when my arms just burn from holding them up=
for=20
too long.
I bought my lift solely for car storage purposes. Being able to work=20
under cars is just an added benefit. For me, in suburbia with a tight HO=
A, I=20
have my existing garage space, with no option to build out a wider, longe=
r=20
garage. So if I wanted more cars in the garage, they had to go up.
On Fri, Jan 29, 2016 at 1:46 PM, Tom Witt via Tigers =20
<_tigers@autox.team.net_ (mailto:tigers@autox.team.net) > wrote:
=20
=20
There would be a difference between a car falling off a lift (or the lift=
=20
vertically collapsing)..., and the lift falling (tilting) over with the=
car=20
still firmly attached. It would seem the floor structure for a two post=
=20
lift needs to be seismically substantial as compared to a four post lift.=
I=20
don=E2=80=99t think the issue is the two post lift collapsing (vertically=
) as much=20
as it is simply falling (tilting front-back) with the failure at the floo=
r=20
attachment. Tripods have at least three legs for a reason.
=20
As a lifetime suburbanite I struggle to comprehend the need for a lift.=
=20
Are there really that many places that are width/depth challenged and yet=
=20
have substantial height to elevate the car =E2=80=93 especially for stack=
ed parking?=20
If you are replacing exhaust systems, brakes, transmissions on a daily=20
basis sure they make sense. Maybe it is just my perpetually bad back, but=
=20
having to stand, look up and work with arms up seems like torture compare=
d to=20
putting a car on jackstands and lying on the floor to work. A sheet of fo=
am=20
core makes a nice, cushioning insulator. =20
=20
=20
=20
From: _CoolVT--- via Tigers_ (mailto:tigers@autox.team.net) =20
Sent: Friday, January 29, 2016 12:38 PM
To: _lwright@impactoffice.com_ (mailto:lwright@impactoffice.com) ;=20
_tigers@autox.team.net_ (mailto:tigers@autox.team.net) =20
Subject: Re: [Tigers] 2-post versus 4-post Lifts
=20
=20
Figure a Tiger at 2500 lbs. on a 9000lb rated lift. Should be pretty=20
secure. The guy who installed mine said they are actually tested at twice=
the=20
rated capacity. I think as long as the Tiger isn't shaken off the lift th=
en=20
it's a pretty good bet that the lift won't collapse.=20
Mark L
=20
=20
In a message dated 1/29/2016 3:13:28 P.M. Eastern Standard Time,=20
_tigers@autox.team.net_ (mailto:tigers@autox.team.net) writes:
I'm sure all the West-coasters have been through it all before and shrug=
=20
it off, but I was a couple of miles from home when I experienced our one=
=20
significant earthquake, eh, 5 years ago -- and the first thing I thought=
of=20
was the Tiger sitting on the lift in the garage. Came home, opened the do=
or,=20
all was well. 4-post lift. MAYBE someone can convince me that a 2-post is=
=20
as stable under such circumstances...
Larry Wright
Seabrook, MD
_______________________________________________
_tigers@autox.team.net_ (mailto:tigers@autox.team.net)=20
Archive: http://www.team.net/archive
Unsubscribe: http://autox.team.net/mailman/options/tigers/coolvt@aol.com
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=3D
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--part1_56ac11.33f6d382.43dd5499_boundary
Content-Transfer-Encoding: quoted-printable
Content-Language: en
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3DUTF-8" http-equiv=3DContent-Type>
<META name=3DGENERATOR content=3D"MSHTML 11.00.9600.18163"></HEAD>
<BODY id=3Drole_body style=3D"FONT-SIZE: 12pt; FONT-FAMILY: Arial; COLOR:=
#000000"=20
bottomMargin=3D7 leftMargin=3D7 rightMargin=3D7 topMargin=3D7><FONT id=3Dr=
ole_document=20
color=3D#000000 size=3D3 face=3DArial>
<DIV>If you are going to use a 2 post you definitely want to get advice fr=
om the=20
manufacturer regarding slab thickness. My guess is you'll be told a=
=20
minimum of 6" reinforced concrete where the posts attach. In my case=
I=20
asked around local repair shops for the name of the company that did repai=
r work=20
on their shop lifts. One guy's name (a man in business for himself)=
came=20
up a few times. I hired him and worked with him to install. Best $25=
0 I=20
ever spent. He said he had installed more than 100 in his career wit=
h zero=20
failures so I felt pretty safe. Mark L</DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 1/29/2016 5:40:02 P.M. Eastern Standard Time,=20
tigers@autox.team.net writes:</DIV>
<BLOCKQUOTE=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"=
><FONT=20
style=3D"BACKGROUND-COLOR: transparent" color=3D#000000 size=3D2 face=3D=
Arial>
<DIV>The point of concern for the two post lift is typically the concret=
e.=20
I have no concerns about my 2 post for storage. Of course I have=
a very=20
thick concrete pad. If I had a four inch thick pad I would be concerned.=
Lifts=20
are awesome to work on cars. Although while I store cars on my two post=
lift=20
during the winter. Working underneath it gives me the heeby jeebies if=
I'm=20
using any real torque or big tools. Working on the suspension does not=
scare=20
me.</DIV>
<DIV id=3DAppleMailSignature><BR></DIV>
<DIV id=3DAppleMailSignature>Funny story. Back in the 70's a friend of=
ours had=20
a two post lift he used in his mechanic shop. He too used a 4x4 to help=
hold=20
the lift up in an "emergency" in addition to the safety locks. He went=
to help=20
a customer and one of his techs went to lower the lift with an original=
289=20
cobra on it. He slightly raised the lift to remove the safety catch, the=
4x4=20
tipped to be underneath the car and when he lowered the lift the car til=
ted=20
and then slid off the lift landing between the posts on its side.=20
Ouch!!<BR><BR>Sent from my mobile device</DIV>
<DIV><BR>On Jan 29, 2016, at 3:01 PM, Jay Laifman via Tigers <<A=20
title=3Dmailto:tigers@autox.team.net=20
href=3D"mailto:tigers@autox.team.net";>tigers@autox.team.net</A>>=20
wrote:<BR><BR></DIV>
<BLOCKQUOTE type=3D"cite">
<DIV>
<DIV dir=3Dltr>:-) I have spent many an hour under cars on=20
jackstands. On hindsight, in California, not a good idea. =
I now=20
almost exclusively use ramps if I can. If I can't, I ALWAYS have=
=20
something bigger than me under there too. I have this large, lon=
g=20
block of wood that some contractors left once. It's added=20
protection. I put all wheels under too - including all the jack=
stands=20
and floor jacks under there.=20
<DIV><BR></DIV>
<DIV>Funny you mention sore arms. There are many times when I've=
been=20
under a car working away on my back when my arms just burn from holdin=
g them=20
up for too long.<BR>
<DIV><BR></DIV>
<DIV>I bought my lift solely for car storage purposes. Being abl=
e to=20
work under cars is just an added benefit. For me, in suburbia wi=
th a=20
tight HOA, I have my existing garage space, with no option to build ou=
t a=20
wider, longer garage. So if I wanted more cars in the garage, th=
ey had=20
to go up.</DIV></DIV></DIV>
<DIV class=3Dgmail_extra><BR>
<DIV class=3Dgmail_quote>On Fri, Jan 29, 2016 at 1:46 PM, Tom Witt via=
Tigers=20
<SPAN dir=3Dltr><<A title=3Dmailto:tigers@autox.team.net=20
href=3D"mailto:tigers@autox.team.net"=20
target=3D_blank>tigers@autox.team.net</A>></SPAN> wrote:<BR>
<BLOCKQUOTE class=3Dgmail_quote=20
style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #c=
cc 1px solid">
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: Arial; COLOR: #000000"=
dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #00000=
0">
<DIV>There would be a difference between a car falling off a lift (o=
r the=20
lift vertically collapsing)..., and the lift falling (tilting) over=
with=20
the car still firmly attached. It would seem the floor structu=
re for=20
a two post lift needs to be seismically substantial as compared to=
a four=20
post lift. I don=E2=80=99t think the issue is the two post lif=
t collapsing=20
(vertically) as much as it is simply falling (tilting front-back) wi=
th the=20
failure at the floor attachment. Tripods have at least three=
legs=20
for a reason.</DIV>
<DIV> </DIV>
<DIV>As a lifetime suburbanite I struggle to comprehend the need for=
a=20
lift. Are there really that many places that are width/depth=
=20
challenged and yet have substantial height to elevate the car =E2=80=
=93 especially=20
for stacked parking? If you are replacing exhaust systems, brakes,=
=20
transmissions on a daily basis sure they make sense. Maybe it is jus=
t my=20
perpetually bad back, but having to stand, look up and work with arm=
s up=20
seems like torture compared to putting a car on jackstands and lying=
on=20
the floor to work. A sheet of foam core makes a nice, cushioning=20
insulator. </DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Cali=
bri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: in=
line'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV><B>From:</B> <A title=3Dmailto:tigers@autox.team.net=20
href=3D"mailto:tigers@autox.team.net"; target=3D_blank>CoolVT--- via=
Tigers</A>=20
</DIV>
<DIV><B>Sent:</B> Friday, January 29, 2016 12:38 PM</DIV>
<DIV><B>To:</B> <A title=3Dmailto:lwright@impactoffice.com=20
href=3D"mailto:lwright@impactoffice.com"=20
target=3D_blank>lwright@impactoffice.com</A> ; <A=20
title=3Dmailto:tigers@autox.team.net href=3D"mailto:tigers@autox.tea=
m.net"=20
target=3D_blank>tigers@autox.team.net</A> </DIV>
<DIV><B>Subject:</B> Re: [Tigers] 2-post versus 4-post=20
Lifts</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Cali=
bri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: in=
line'><FONT=20
color=3D#000000 size=3D3 face=3DArial>
<DIV>Figure a Tiger at 2500 lbs. on a 9000lb rated lift. Shoul=
d be=20
pretty secure. The guy who installed mine said they are actually tes=
ted at=20
twice the rated capacity. I think as long as the Tiger isn't shaken=
off=20
the lift then it's a pretty good bet that the lift won't collapse.=
</DIV>
<DIV>Mark L</DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 1/29/2016 3:13:28 P.M. Eastern Standard Time=
, <A=20
title=3Dmailto:tigers@autox.team.net href=3D"mailto:tigers@autox.tea=
m.net"=20
target=3D_blank>tigers@autox.team.net</A> writes:</DIV>
<BLOCKQUOTE=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px=
solid"><FONT=20
style=3D"BACKGROUND-COLOR: transparent" color=3D#000000 size=3D2=
=20
face=3DArial> I'm sure all the West-coasters hav=
e been=20
through it all before and shrug it off, but I was a couple of mile=
s from=20
home when I experienced our one significant earthquake, eh, 5 year=
s ago=20
-- and the first thing I thought of was the Tiger sitting on the=
lift in=20
the garage. Came home, opened the door, all was well. 4-post lift.=
MAYBE=20
someone can convince me that a 2-post is as stable under such=20
circumstances...<BR><BR>Larry Wright<BR>Seabrook,=20
MD<BR>_______________________________________________<BR><BR><A=20
title=3Dmailto:tigers@autox.team.net href=3D"mailto:tigers@autox.t=
eam.net"=20
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