Most dust collectors spin at 3600 rpm when run by AC. About 1/2 what you
want them to spin at.
On
05/18/2011 10:53 PM, Terry Adams wrote:
Ernst,
I agree with Ed, good you gave it a try. You learned
some things while making the attempt.
Perhaps testing with an
electric motor might be good.
In our cabinet shop we had a dust collector
which would really wind up in RPMs. It was a cast impellor and housing
and it was tough enough to suck up dust and wood chips. Unfortunately
that was years ago so I can't give you any details about RPM, suction, size,
etc. But have a look at a dust collector at a tool supply house, maybe
you'll get some new ideas.
Excellent idea,
Terry!!
Really, I have the dimensional design worked out. There is
all sorts of things that "people who really know what they're doing" do to the
impeller fins in order to go from 80% efficiency to 85%. I'm already
starting with a sub-optimal configuration, and I've decided that
constructability outweighs getting the ultimate in efficiency at this
point. I've been looking around to see if there is a commercially
available impeller that I could re-purpose. I've search backpack leaf
blowers to no avail, but haven't even thought about dust
collectors.
Jarrett, if I sent you a CAD drawing, could your CNC cut me
an impeller?
I found the oil leak in my gearbox last night, and it wasn't
even close to where I thought it was. The oil is still clean so it is
really hard to tell where it is coming from. I stood it upright and poured
some dark two-stroke oil into it. Spun it a bit, and let it sit
overnight. Had a nice little blue streak pointing straight at the culprit
this morning.