VMAR Power Module Sets come with propeller mounting hardware that works with the propeller we recommend AND can be adapted to work with most other propellers.

 

a) We include the following: Three (3) 3 mm plain nuts, One (1) 3 mm security nut with fiber insert, Two (2) flat washers.

 

b) For propellers without a collet set and having a round hole in the back of the propeller hub that is bigger than the motor shaft or having a 3mm hexagonal recess in the back of the propeller hub: First thread one of the 3 mm plain nuts onto the shaft and position it about 3/4 in. (19 mm) from the open end of the shaft. Then install one flat washer followed by two of the 3 mm plain nuts (tighten snugly), then the prop, then a second flat washer and finally one of the 3 mm security nuts. Push the propeller towards the motor so that the two plain nuts are inserted into the recess in the back of the propeller hub and the back of the hub is against the adjacent flat washer. Tighten the 3 mm security nut so that the second flat washer is firmly in contact with the front of the propeller hub. In summary, the components are arranged as follows: Motor > 3 mm nut >  flat washer > two (2) 3 mm nuts > propeller >  flat washer > security nut.

  

c) For propellers with a collet set and having a larger recessed round hole in the back or front of the propeller hub that will accomodate a collet: Select a collet that has a center hole 3 mm (approx 1/8 in.) in diameter. Insert the collet into the hole in the propeller hub. From this point on treat the propeller and collet as one unit i.e. the "propeller". Next thread one of the 3 mm plain nuts onto the shaft and position it about 3/4 in. (19 mm) from the open end of the shaft. Then install one flat washer then the prop, then a second flat washer and finally one of the 3 mm security nuts. Push the propeller towards the motor so that the back of the propeller hub is against the adjacent flat washer. Tighten the 3 mm security nut so that the second flat washer is firmly in contact with the front of the propeller hub. In summary, the components are arranged as follows: Motor > 3 mm nut > flat washer > propeller > flat washer > security nut.

 

d) For propellers having a 3 mm (approx 1/8 in.) round hole that runs completely through the propeller hub with no other hole or recess in the back or front of the hub: Thread one of the 3 mm plain nuts onto the shaft and position it about 3/4 in. (19 mm) from the open end of the shaft. Then install one flat washer, then the prop, then a second flat washer and finally one of the 3mm security nuts. Push the propeller towards the motor so that the back of the hub is against the adjacent flat washer. Tighten the 3mm security nut so that the second flat washer is firmly in contact with the front of the propeller hub. In summary, the components are arranged as follows: Motor > 3mm nut > flat washer > propeller > flat washer > security nut.

 

e) For other propellers: We suggest obtaining a "squish" or "cinch" type propeller adapter suitable for 3mm shafts. You may wish to cut the motor shaft to a shorter length. Measure and test carefully before shortening the motor shaft with due consideration for any cowl and/or propeller clearance.