Whirlwind GA-RW3B propeller adjustment tool

This is for adjusting the blade angles on Whirlwind GA-RW3B propellers.

The handle is much longer than the supplied tool, which allows for smoother adjustment.  I had a hard time getting a smooth move to the desired angle with the stock shorter tool. It includes a recess to glue a small level on so that each blade is measured with the tool vertical.  It also includes recesses for a magnet or washer to be glued in to hold a mag base digital protractor.

Use the same as the stock tool - measure a blade tip to ground when it looks level and use the measurement for all the blades (the instructions don't say to do this, but I want it as repeatable as possible). Then install the tool vertically (with the level) and measure the angle with the digital protractor.  The first setup is as per the manual, so you get one blade roughed in. Pick and mark your 'zero' blade, zero the protractor then make the other 2 match.  Subsequent changes and the 5 hr check are super easy - zero the protractor on a blade, adjust it as you need (based on 1 deg per 200 RPM) and +/-0.2 deg between blades (it's easy to do better than 0.2). Other than the original install the absolute angles don't matter - they just need to be the same (+/- 0.2) and give you the RPM you want. 

Since it's almost 350mm long, I used my Prusa Core One L and printed diagonally, laid on the back, with a brim. If it's too long for you, you can print in 2 parts or lop some off the handle in your slicer.  PETG 20% gyroid (actually I used 3d Fuel Pro PCTG in galaxy black) :-)

Links to parts:

Magnets  https://a.co/d/07rChtSX

Level  https://a.co/d/0dT5EYA5

Digital Protractor  https://a.co/d/00tz6TYb

Hope you use, enjoy it and keep 'em flying :-)

Please note the Attribution, no Commercial use license.