[Gasification] tests to design a new cheap gasifier fan

Alex English english at kingston.net
Sat Oct 2 18:58:19 CDT 2010

Hi Jim,
We did something similar to make a high temp blower. We grooved the hub 
and backing plate to set the vanes in. Then countersunk holes in the 
back of the grove to weld through and then grind smooth.

What is your temperature target? What will the needle bearing tolerate?

Thanks for sharing it.


On 10/2/2010 5:58 PM, jim mason wrote:
> we've been doing some work lately to design a new fan/blower that will
> produce the needed vac and heat tolerance for gasifier operation.  as
> we all know, there is not an inexpensive source for such a thing from
> other industries and applications.  thus we had to build one for the
> early gek kits.
> the original gek fan proved to not be strong enough once we finally
> characterized the vac numbers that produce the flow/heat rates that
> correspond to full tar conversion.  the ejector/venturi solution we're
> using currently produces plenty of vac and is very flexible, but
> requires compressed air.  this is not good for many off grid
> situations.  thus we still need a good fan/blower source.  and one
> that works on 12vdc, not an ac source.
> here's the info an pictures of our recent tests to produce this.  we
> are working towards a much simplified solution that also gets rid of
> the welding to make it.  this is based on the common car/truck fasco
> type fan motor.
> http://gekgasifier.com/forums/showthread.php?t=455
> jim
> --
> ------------------------------------------------------------------------------
> Jim Mason
> Website: http://www.whatiamupto.com
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