SPF GearBox
	SPF (Slow & ParkFlyer) GearBox more efficiently transfers the power of the motor to the prop. Most of KAVAN.s 280 powered aircraft include the SPF GearBox with APC prop.
Features: SPF.s steel M5 prop shaft fits APC SlowFlyer props perfectly; no additional adapters are needed. Horizontal mounting holes are 32 mm apart. For added stability a third mounting hole is triangularly located at 30 mm (slightly above the prop shaft). Available in two prop shaft lengths: Standard and .Long". Use the .Long" version when your airplane has a long motor cowl. Threaded prop adapter, therefore the prop can be horizontally adjusted to perfectly fit your airplane. Weight: Standard: 18 g, .Long": 20 g. Ratio Motor Standard No A* = 16 mm "Long" No. A* = 23 mm 3.00:1 280 6550.300 3.43:1 280 6550.343 6557.343 3.63:1 280 6550.363 6557.363 4.14:1 280 6550.414 6557.414 4.46:1 280 6550.446 6557.446 5.27:1 300 6550.527 6557.527 5.80:1 300 6550.580 6557.580 * A = Prop adapter to prop shaft tip (see drawing) Enter our Site for more information: www.kavanrc.com