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Alignment: converting plane to Contra

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Alignment: converting plane to Contra

Old 03-09-2024, 01:51 PM
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Default Alignment: converting plane to Contra

When converting a plane from standard (single) prop nose ring configuration to a Contra nose ring setup, the general advice is to align the Contra for zero deg right thrust and maintain the existing downthrust angle

Is there a jig or easy way to set the motor to zero thrust when installing the Contra/mount?

Ive seen conversions where the nose ring is cutoff to achieve zero degrees and others where a shim is built and attached to achieve zero degrees

Any advice would be appreciated (planning a new build in an airframe designed for single prop but would like to try new Contra)

Old 03-12-2024, 09:02 AM
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My advice would be that if you don't have the building skills to do the necessary surgery to the nose of your pattern plane to accommodate a CD, find an experienced builder in your area that has successfully performed the modification. I've done a total of 3 modifications in the last 8 years and found each one to be different and not very easy to do in order to "get it right".

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