KAVAN SPF (Slow & Park Flyer) Gearboxes KAVAN's SPF (Slow & Park Flyer) gear boxes transfers power from the motor to prop more efficiently than with other gear boxes on the market. Designed for 280/300 motors, these gear boxes feature: Steel M5 prop shaft for a proper fit with popular APC electric propellers Horizontal mounting holes are 32mm (1.25 inches) apart. For added stability a third mounting hole is located triangularly at 30 mm (1.18 inches) which is slightly above the prop shaft Threaded prop adapter which can be horizontally adjusted to fit your airplane Available in two prop shaft lengths (standard and long), perfect for different cowl lengths. Lightweight. Only 18 grams (0.64 ounces) for the standard shaft length and 20 grams (0.71 ounces) for the long version.

Specifications Motor Size Gear Ratio Standard Shaft Long Shaft 280 3.00:1 KAV6550300 KAV6557300 280 3.43:1 KAV6550343 KAV6557343 280 3.63:1 KAV6550363 KAV6557363 280 4.14:1 KAV6550414 KAV6557414 280 4.46:1 KAV6550446 KAV6557446 300 5.27:1 KAV6550527 KAV6557527 300 5.80:1 KAV6550580 KAV6557580

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