Buzzard Droppings February 2006

Safety

à Always balance the prop

à Always ream the prop hole so the prop will slide into the output shaft (don’t screw it onto the shaft)

à Provide clearance between the spinner cutouts and the prop. The spinner should never contact the prop edges.

à Use a spinner

à Mount the engine securely and with as little stress as possible

à Did we mention balance the prop?

à Mark the prop ends with white or bright paint color

à Secure loose clothing before working on or near an engine

à Verify that no loose materials exist on the ground around the engine (rags, tools, gravel, parts)

à ALWAYS adjust the engine or work on it (including removing the glow plug wire) from BEHIND the engine.

à Replace props that have nicks, etc.

à Use the correct prop for the engine.

à Make sure the prop mounting hardware is very tight.

à Use sandpaper or other abrasive material between the prop driver and prop washer to prevent prop slippage (if necessary)

à Check the engine mounting hardware often

à Frequently recheck the prop mounting nuts for tightness, especially for wood props

à Never use a wood prop on models to be flown from water.

à Use an engine test stand for debugging and breaking in engines

Super Tigre 3000 on the test stand—3 blade prop

Precision Eagle 370 twin (3.7 CI) turning a 22x10 prop