james, the movers here at the uni use 3/8" steel rod for their rollers.
they moved a 2-ton safe (on flat ground, fortunately) on those.

bill
felton, ca

On Wed, Jan 28, 2015 at 5:23 AM, james duprie  wrote:

> In the a couple of years, I am going to have to figure out how to move a
> 1500 pound machine into a closed truck. There are no anchor points in the
> truck that can take the load, and it will be going up a ramp in order to
> get
> into the truck.
>
> Right now my concept is rollers (how I moved the machine last time - 2"
> thick dowels I turned out of firewood), some sort of choc/wedge anti
> back-roll, and a long lever bar. Walk it up the ramp in little steps using
> the lever bar between the ramp and the bottom of the skid - lift, chock,
> reset bar, continue.
>
> I've lifted large boulders uphill in a similar fashion, but they don't tend
> to roll back down the ramp....
>
> -JD
>
> -----Original Message-----
> From: OldTools [mailto:oldtools-
bounces@s...] On Behalf Of paul
> womack
> Sent: Wednesday, January 28, 2015 4:13 AM
> To: Christopher Swingley; OldTools List
> Subject: Re: [OldTools] Lifting heavy things
>
> Christopher Swingley wrote:
>
> >
> > Every time I go back there, I'm amazed that I was able to do all that,
> > by myself, with nothing but a couple winches, a pulley, some ropes and
> > a simple A-frame.  Physics is pretty cool.
>
> There was an excellent program on UK TV concerning the erection (not
> casting) of Abraham Darby's Iron Bridge.
>
> Short version - A frames and rope.
>
> Long version:
>
> http://www.hdowns.co.uk/iron
bridge4.htm
>
> (hell, it was back in 2001)
>
>   BugBear
>
>
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