Re: [CAD_CAM_EDM_DRO] Re: Counterbalancing & Rong-Fu RF-45 Project

Hi Carey,

Sorry, I didn't realise that we were talking about a Bridgeport, Ron's
message seemed to suggest that we were talking about a mini mill.

Ian

--
Ian W. Wright
Sheffield UK

----- Original Message -----
From: Carey L. Culpepper <mr.c@...>
To: <CAD_CAM_EDM_DRO@egroups.com>
Sent: 13 July 2000 02:57
Subject: Re: [CAD_CAM_EDM_DRO] Re: Counterbalancing & Rong-Fu RF-45 Project


> Ian: A Bridgeport milling machine is not exactly a small machine. Just
> the table is probably a couple hundred pound,s or more, with nothing on
> it. The vise might be 50 pounds or more. That does not include the knee
> itself. Or 3 stepper motors at 25 pounds each. A lot of weight to push
> up. Gravity does a good job coming down.
> I do a few Jaguar racing cylinder heads on this machine. They are 28
> inches long and quite heavy. Add that to the mass and you can understand
> why string and buckets won't get the job done.
>
> Ian Wright wrote:
>
> > Hi,
> >
> > All this talk about air rams and gas springs seems a bit high tech and
> > OTT
> > for a small machine. My recommendation would be for a simple
> > pulley, a bit of string and a weight bucket. This system is easy to
> > fit,
> > linear in operation, easily adjusted and cheap!
> >
> > Ian
> >
> > --
> > Ian W. Wright
> > Sheffield UK
> >
> >
> > ----- Original Message -----
> > From: Ron Ginger <ginger@...>
> > To: <CAD_CAM_EDM_DRO@egroups.com>
> > Sent: 12 July 2000 15:22
> > Subject: Re: [CAD_CAM_EDM_DRO] Re: Counterbalancing & Rong-Fu RF-45
> > Project
> >
> >
> > > I think the original question on this thread was for a Sherline. An
> > air
> > > cylinder might be hard to fit there!. The Grizzley mini mill has a
> > gas
> > > spring inside the column with a bracket up and over the top to help
> > lift
> >
> >
> >
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