WingFan  My Fan of choise

This was a long struggle, and I'm still not convinced that I'm making the right choice. Even on the forums there are only a few people who really can tell me which one is the best for me. And still they can't tell me why. Given the size and the hp I'm going to use.

First I had a calculator that could be fooled and over-ref there RPM limits. But now they have a "free for all to download calculator" with RPM restrictions, just go to:   

WingFan Select calculator download, follow the requirements and get your personal calculator. It will take you some time to get it to do what you want, DON'T GIVE UP!

 

Hub design

The 5 - bladed Z - hubs consist of one hub half with integral cast centre boss (arrow) and another plain hub half, without boss.
The bore, the key way and also a fixing screw will be manufactured according to customer requirements. The complete hub consists therefore of two parts.
 

 

 

 

              
                     9 -bladed


Z - hub with cast-on boss

 

 

 

 

 

This is one of the ways to mount the fan on your shaft

 

 

 

 

 

 

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Direction of flow

induction
side

 

pressure
side

clockwise = R

 

anti-clockwise = L

 

 

 

 

Type of mounting ►

If the impeller is directly mounted onto the motor shaft the boss should be positioned towards the motor and pushed against the shaft shoulder.

If the motor is positioned on the impeller's induction side, this is called mounting type "A".

If the motor is on the pressure side, it is called type "B".

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The splitter

 The splitter must be installed in a way that is does not stick out at the bottom. It will otherwise break if you hit something. If it breaks it also can hit your lift-fan and rip the attached skirt. Two engined craft, like mine, with a square nose have a part of the lift duct in the front plow plane. This makes it very likely for the splitter to stick out and will be the first that hits any object in front of the craft. Other two engined craft (pointed) with the lift in the front can have the same problem.

ß HERE IS THE WRONG SETUP ß

In the middle, in the duct you clearly see the splitter being  at the lowest point of the craft, NOT GOOD !

(I'll be posting a pict of the correct setup later !!)

The splitter itself is a little curved, this is due to the fact that the blades have a wider chord and more twist towards the center. The next picture will tell you more than a thousand words!

The gap between the fan and splitter should be as small as possible (preferably less than ¼"). If you don't have that you'll loose lift and have bad performance in general. Slow or little lift, tail end dragging and not getting over hump are some of the symptoms. (Thats what I heard !!)