aribert neumann wrote:
I picked up a used $10 Nutone 300 cfm vent fan that I want to use over
my welding table. THe problem is that the fan motor runs - slowly (it
is rated at 1600 RPM).

How many RPM does it run? Some are rated at 1300 RPM.

The JA2M291N motor is cheaper at $105 but at 1300 RPM would
convert your unit to 200 CFM operation.

http://www.electricmotorwarehouse.co...ne/nutone2.htm

Might this be sufficient?

--Winston