AIR-X wind generator

 Anyone else had difficulties with obtaining technical support from the
manufacturers of Air-X wind generators  made by Southwest Wind Power?
Maybe it's just because I'm an Auzzie and live too far away from them to
bother!
Maybe a case of  'out of sight , out of mind'.

JERD

  Haven't had the need yet.

What's your problem??


Norm



JERD wrote in message ...

 

As the retired holder of a pilot's licence I have an interest in and some
knowledge of airfoils. I have observed that the front of the blades supplied
with the Air-X are quite bumpy/rippled on their surface in some places -
more on the extreme ends of the blades. I suspect this is the result of the
manufacturing die process. This is only a small amount but the blades are no
way from smooth!

This is not good for an airfoil!

I was wondering if a very light sanding of these rippled spots might be
acceptable. I am aware of implications regarding blade balance etc.

JERD

 
JERD wrote in message ...

supplied

Funny you should mention this, but my blades have the some surface
imperfections. Since I only use it once a year when camping in a remote
location, my warranty has expired and I never got around to contacting Air
X. I am considering getting out the wet and dry paper to smooth them out.

Another issue however, is the blades are slightly out of alignment and when
observed side on when rotating, the tip of one blade is about a cm (half
inch) ahead of the other. As  a result ( I think) I get a chuffing sound at
low speeds.

A mate who plays with model helicopters said I should pack out the blade to
equalize them but I don't know if this is advisable.

Otherwise I am reasonably happy with it as a complement to solar panels.

Regards

Norm

 

They put dimples on golf balls for a reason. Any chance this surface roughness
is for similar purposes?

Bob