In a direct drive power setup, the propeller is connected directly to the motor output shaft. Most propellers require a prop adaptorGunther push on prop
Recommended usage:
6 volt sp400 motor (7-8 cells 500 - 600 mah)
7.2 sp400 motor (8-10 cells 500 - 600 mah)
Performance specs (link)
Master Airscew (MA)
Size: 5" x 4.5"
Approx. weight: oz.
Pros:
Inexpensive
Cons:
Requires a prop adaptor
Recommended usage:
6 volt sp400 motor (7-8 cells 500 - 600 mah)
7.2 sp400 motor (8-10 cells 500 - 600 mah)
Performance specs (link)
Gunther
Size: 7x6
Gear ratio
Gearboxes:
MPI aluminum gearbox with ball bearings
Gear ratio: (1.72:1and 2.0:1)
Approx. weight: oz.
Pros: Lightweight
2 pinion gears are included
Prop adaptor is included
Pinion gear and output shaft gear have set screws for easy installation
and removal
Cons:
Prop adaptor is not a standard size
Recommended aplications:
1.72:1 ratio:
6 volt sp400, 8 cells (500-600mah), Gunther 7x6 prop
Performance specs (link)
2.0:1 ratio:
6 volt sp400, 8 cells (500-600mah), Aeronaut 8x6 folding prop
Performance specs (link)
Modelair-Tech MG50
Gear ratio: (2.14:1)
Approx. weight: oz.
Pros:
Inexpensive
Output shaft is easily replaceable with a piece of 1/8" music wire.
Output shaft gear have set screws for easy installation and removal
Lightweight
Cons:
Pinion gear is press fit and requires a gear press for easy installation
and gear puller for easy removal
Using motor cleaners will ruin the plastic housing
Recommended aplications:
7.2 volt sp400, 8 cells (500-600mah), MA 9x6 prop
Performance specs (link)
7.2 volt sp400, 8 cells (500-600mah), MA 9x7 prop
Performance specs (link)
7.2 volt sp400, 8 cells (500-600mah), MA 9x8 prop
Performance specs (link)
7.2 volt sp400, 8 cells (500-600mah), Aeronaut 9x6.5 folding prop
Performance specs (link)
6 volt sp400, 8 cells (500-600mah), Gunther 7x6 prop
Performance specs (link)
6 volt sp400, 8 cells (500-600mah), Aeronaut 8x6 folding prop
Performance specs (link)