One thing I remember him mentioning is that that always applies upward pressure to the Z rack since 80lb far exceeds the 30-40lb estimates of the weight of the head.
Finding a gas spring with the exact length, extension, and weight specs for our mills didn't seem so easy. Perhaps folks can post back with specific products they've had good luck with.
In one of the photo folders, someone extended the top mount for the gas spring above the head with some modified angle iron. That allowed use of a longer spring with enough extension to give you the full travel on the Z. That was cool. The mill is blue in those pics.
All that said, I like the webbing pulley setup. It's so clean and compact, and seems to work just fine for our little mills. I just might not have the room behind the mill to put the counterweight. So, maybe I'll try the angle iron idea.
--- In GrizHFMinimill@yahoogroups.com, "Rob Potter" <rob@...> wrote:
>
> So in that vein, has anyone ever replaced the gas spring in the LMS kit with
> one that's stronger? Which is to say, simply used their mounting hardware?
> I'm working on a counterweight system, and have purchased the longer rack
> from LMS, but I don't want to overlook other options that may have worked
> for someone else.
>
>
>
> Rob
>
>
>
> From: GrizHFMinimill@yahoogroups.com [mailto:GrizHFMinimill@yahoogroups.com]
> On Behalf Of bbass408
> Sent: Friday, January 20, 2012 1:07 PM
> To: GrizHFMinimill@yahoogroups.com
> Subject: [GrizHFMinimill] Re: Air spring and spring
>
>
>
>
>
> I bought the kit and just installed the new rack for now. I'm more inclined
> to wait and do a counterweight like in the other threads today yesterday.
>
> If you used both, you probably would not get too much head lift to cause
> inconvenience. But, most people buy that kit so they can get rid of the
> existing torsion spring which:
> * Limits downward travel.
> * Can hit big workpieces on its way down.
> * Has a locking ring on the right side of the column which makes it harder
> to install Z axis DRO.
>
> --- In GrizHFMinimill@yahoogroups.com
> <mailto:GrizHFMinimill%40yahoogroups.com> , "eedowens" <eedowens@> wrote:
> >
> > I just recieved the LMS spring conversion and wondering has anyone just
> left the tortion spring on along with the air spring and if not what
> problems would this create? thanks ED
> >
>
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