Cyclops Storm Throttle Question

Started by jweaver, August 01, 2014, 11:10:16 AM

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BigT

#15
Quote from: BlueFlyer on August 01, 2014, 09:15:41 PM
I don't mean to be harsh, but if your aircraft pitches up with throttle up and pitches down with throttle down... then there's something wrong with your setup. you need to check CG and thrust angle... on a well trimmed and setup model, adjusting throttle should only affect how fast you move forwards and shouldn't affect pitch up or pitch down... obviously though, zero throttle would eventually cause your aircraft to reach it's stall speed... the stall then causes it to pitch down, or tip stall (one wing drops and you enter a spin)

I agree 100% with brod... get it all trimmed out and set up well without any PA or RTH input first.

Going to stick a spanner in the works here. The correct way to trim any powered model or full size for that matter, is for straight and level flight at cruise speed what ever that is. After that height is increased by increasing or decreasing forward speed by throttle management. Pitch is controlled by elevator roll by ailerons and yaw by rudder. If After trimming with elevator you want to check for correct thrust lines you do it like this: for straight and level head into wind at cruise speed or just over and chop the throttle. If the plane pitches up you need to reduce down thrust if it pitches down you need to increase down thrust. For pushers it's the reverse. For side thrust do a series of vertical climbs without touching the rudder and observe which way the nose goes then increase or decrease side thrust accordingly.

See more trimming help here http://www.gbrcaa.org/acrobatfiles/Trim.pdf
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jweaver

Flew it tonight and it went well.. Got to say that the benefits of the PA mode is not quite as obvious as the NAZA in my quad.

I have a couple of problems.

1. When you let go of the ailerons, the plane oscillates a few times until it levels out. I assume this is "gain" but i reduced it and it wasn't much better. My batteries ran out so there was a limit to what i could do.. Will tweak them further next time.

2. I thought the gain limits would stop he plane banking/rolling too far.. But i gave it full stick and managed to invert the plane even though my roll limit is 25%. What do the limits do?

krikey

I think the gain limits are for the PA alone eg how much gain it can use not how much you can use, you can fly acrobatically using PA but I believe your battling with PAs desire to fly straight and level so it will be a sluggish task


Krikey
Krikey