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Old 19th March 2001 | 18:06
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Shaggy Sheep Driver
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Skippy - No, the engine can't acheive that RPM at a low power setting. With the lever forward, the prop will stay in fine pitch and the RPM will depend on the power setting until it reaches 2400, whereupon the prop will automatically go more course to absorb the extra power and maintain selected RPM.

Once in the air, with the lever set somewhere between full fine and full course, it will 'govern' engine RPM to the level selected by the prop lever. If the RPM starts to rise above the selected level, it cousens the blades, if it starts to fall below the selected level, it fines-off the blades.

Hope this helps.

In the Yak, RPM is shown as percent RPM, rather than actual RPM - like a jet. Thus, for aeros, we set 82 percent RPM and full power and haul it around the sky. The prop will maintain engine speed regardless of airspeed. Very useful!

SSD