Propellers

24cm Propeller Assembly $4.50 each

This 24 cm diameter propeller is manufactured by Ikara for Freedom Flight Models. This is one of the most efficient non- flaring propellers yet and is very easy to get GREAT results. It is the same as included with the FS2023 kit. Weight is approximately 2.2 g. and has a 4 cm maximum chord width. This is an excellent propeller to use when trimming to smaller diameters to leave wider chord blades. This propeller is provided in the “Flight Endurance” kits that require trimming to 17 cm maximum diameter. Photo of 2 props to show side and front view but are priced individually. It does include the pre- installed .020” shaft, bearing bead and Nose Button. Use a Front Hook (shown under the PARTS tab) to mount to motor stick (not included).

Broad Blade Flaring Style $4.75 each

24 cm diameter with the same construction and materials as the standard Ikara propellers but a much wider chord located mostly ahead of the spar. This allows the thin plastic blades to slightly flex to a steeper pitch at the beginning of the flight to slow down the climb and conserve winds, but then flex back to the original flatter pitch for the remainder of the flight. This is a method of making somewhat of a variable pitched prop but still comply with S.O rules. These propellers are a bit heavier at 2.8 g and are commonly sanded, trimmed and re-pitched. Photo shows side and front views but are priced individually. It does include the pre-installed .020” shaft, bearing bead and Nose Button. Use a Front Hook (shown under the PARTS tab) to mount to motor stick (not included).

15cm Propeller $3.50 each

This 15 cm diameter propeller is manufactured by Ikara and can easily be trimmed with scissors to the 2020 “Wright Stuff” 8 cm regulations. This is a very light-weight efficient propeller where the whole propeller assembly weighs less than 1 gram. The photo is of 2 propellers to show side and front view but are priced individually. It does include the pre-installed .020” shaft, bearing bead and Nose Button. Use a Front Hook (shown under the PARTS tab) to mount to motor stick (not included).

Orange Molded Plastic (Science Buddies) $3.00 each

This molded plastic propeller is ideal for the “Efficient Propeller Design” experiment written up on the Science Buddies website. It is manufactured for outdoor rubber powered airplanes, is 9 ½” diameter (24 cm) and has a nice wide 1 5/16” chord, making it an excellent choice to trim down to narrower widths for experimentation. The original center hole is 3/64” diameter, but we custom drill it to a diameter that will friction fit onto the 2mm shaft motor recommended in the experiment. If ordering these propellers for rubber powered flying, please send an e-mail asking us not to resize the center hole. For best results with the experiment, trim an even amount from the leading and trailing edges to make narrower chords. The experiment recommends 4 propellers, but commonly 6 are ordered in case spares are needed.