The bottle jack, improved

[Jonathan Hanson]

I've written before about Bogert Manufacturing, specifically their Safe Jack system for the Hi-Lift jack (here). The company has just introduced a new Safe Jack system for the ubiquitous bottle jack, and it hugely increases the versatility of that tool. If you've ever balanced a bottle jack on a couple of 4x6s to get it to the height you needed, you'll understand my enthusiasm. The full review is here.

 

[dorton]

Very neat. Thanks for sharing.

 

[dstock]

Damn that's sweet!

 

[SmoothLC]

Interesting!

$199 w/ the bottle jack and $136 w/out.

Hummm...

 

[mdmead]

Cool... but I'm more excited about the Hi-Lift add-on I just discovered (above)!

 

[ryandavenport]

Cool... but I'm more excited about the Hi-Lift add-on I just discovered (above)!

That's what I'm thinking. I've gotta have one of those.


Sent from my iPhone using Tapatalk - now Free

 

[steelheadbum]

I have this kit but I paired mine with an 8 ton jack from US jacks, Works great and would recommend to all.
Buck
The Redneck Mexican
2002 E350 7.3 PSD 4x4 8inch lift pop top conversion....

 

[Jonathan Hanson]

I've been using the Hi-Lift Safe Jack for six months now, and I'm still impressed with it. It's not for every situation, but it's simple to unhook the cables and use it as a load-spreading base.

 

[bfdiesel]

Should note that the likely hood of bending a ram is higher.

 

[Jonathan Hanson]

Should note that the likely hood of bending a ram is higher.

I thought about that, but then tried to think of ever hearing about a bottle jack ram bent in the field, and couldn't recall an instance. But certainly if you stacked extensions considerable extra caution would be mandated.

 

[nat]

I'm going to guess the PSI necessary to do that is extremely high. It is easy enough to calculate using Euler's column buckling equations.

 

[mhiscox]

It is easy enough to calculate using Euler's column buckling equations.

Of course it is. Let's see, where did I misplace those column buckling equations?

I got this setup for the XV-JP. High quality kit, though I'm in no hurry to run into the problem that requires me to use it.

 

[loup407]

Just got my setup in the mail. I far prefer this to stacking a jack on top of 4x4 blocks.

 

[mhiscox]

Good news if you're thinking of one of these . . .

I got an e-mail today from Bogert Manufacturing offering a substantial 15% discount from Friday through Monday. Might make it time to buy.

 

[squeezer]

Of course it is. Let's see, where did I misplace those column buckling equations?

I got this setup for the XV-JP. High quality kit, though I'm in no hurry to run into the problem that requires me to use it.

P = n π2 E I / L2 (1)

where

P = allowable load (lb, N)

n = factor accounting for the end conditions

E = modulus of elastisity (lb/in2, kPa)

L = length of column (in, m)

I = moment of inertia (in4, mm4)
Factor Counting for End Conditions

column pivoted in both ends : n = 1
one end fixed, the other end rounded : n = 2
both ends fixed : n = 4
one end fixed, one end free : n = 0.25