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Old 05-13-2013, 05:20 PM   #6 (permalink)
HF Scale Support
Posts: 2,962

Join Date: Jan 2010

Yes it is. I also learned a few things since that thread and that is why the very different settings posted here in May compared to January. The changes were not all at once but over a period of time and that helps with the transition. The owner of was really firm in his coaching of those making a transition to scale to never have a change-over from negative to positive pitch during spool-up as he has seen too many nice machines destroyed by that resonance that can happen rather fast. It is puzzling that a pod and boom helicopter is seldom hit by this vicious problem even though a vast majority of them have 3 to 4 degrees of negative pitch at the start of spool-up (all my pod and booms have negative pitch at start-up). There does not seem to be a direct reason, but you can be certain, it does happen. Take care.

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