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DarkHorse
Sat Apr 23, 2005 6:11 pm

CCPM cyclic and pitch interaction
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Has anyone got a good step by step instruction to reduce cyclic interaction with pitch? :?: 

I'm being a little fussy but I want my heli to sit in GE without bobbing (aka popping) up and down in altitude caused by very small +/- changes in blade pitch (overall swash plate hight) as a result of CCPM cyclic interaction.

As I understand it the problem is a mechanical phenomenon due to the way 3 servo horns move in relation to the swash plate. These small geometric differences tend to be more noticeably on micro heli's. The physical servo size makes it almost impossible to position the servos to eliminate such errors.

 :idea: Ideally I could choose (or work out) a setup scheme so that cyclic interaction only caused a small increase in blade pitch (a desirable mix anyway). Or do I just use a radio mix to compensate?

Hornet II CP setup references:
http://hometown.aol.com/mikeflyz/setup1.html
http://www.deeteeenterprises.com/NS.ms_hornet.throttle-pitch-setup.php
http://www.ericlarsonrc.com/Heli/Equipment/HornetII2005/HornetII2005.htm