User Manual

USER GUIDE

Throttle Gain Reduction: If you find yourself with oscillations at very high throttle levels while

experiencing stable flight at hover power, you may want to try this feature. It works by scaling all Inner PID

gains by a factor that is linearly mapped from 0% reduction starting at the “Throttle Gain Reduction Start

Point” to whatever percentage reduction is set in the “Throttle Gain Reduction” field as the average throttle

output reaches the “Max ESC/Motor Output”.

Note: With newer ESCs and Multishot 4kHz and above, this setting is often not needed.

Vibration is Key: If you follow the prescribed steps above and still cannot get good performance, one possible

culprit could be excess vibrations.

Always be sure that your motors and props are balanced. A good way to check if you have too much vibrations

is to mount a HD video recorder on your frame with minimal vibration isolation and check if your recordings

contain “jello".

The presence of “jello", or wobbling lines in your recording, usually indicates that your frame has an

imbalanced motor or insufficient vibration rejection. This can be caused by poor build quality in either your

frame, motors, or propellers. In addition, even a small crash can deform a motor shaft enough to introduce

significant vibrations.

It is critically important to be sure your motors and props are in as good condition as possible during your

initial tuning session. For example, if you have a small nick in an otherwise flyable prop, put it aside and replace

it with a new one during your tuning session. The same goes for a questionable motor. You need all of your

components as close to perfect as possible during tuning.

Be Conservative with Derivative Gain: It’s easy to push your derivative gains too high, particularly on higher

rate Multishot systems, where it’s hard to perceive overdriven gain conditions. If you find that during inverted

maneuvers your motors are spinning too much, and you’ve already reduced your Motor Idle Throttle, reducing

your Inner Loop Derivative values can help.