Ernest, yes that is very possible, also a cast impeller would be possible [I actually designed one for my current dust collector but didn't end up casting it [bought instead due to time constraints]

I could also get it dynamically balanced to ~3500rpm if need be.

Jarrett Johnson
www.innovention-tech.com

----- Original Message -----

From: Ernest Christley <echristley@att.net>

Date: Thursday, May 19, 2011 6:50 am

Subject: [FlyRotary] Re: Blower experiment:  FAIL

> 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.
>