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Jun 18, 2019, 07:57 AM
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Cougar429's Avatar
You could theoretically stop the cycle anywhere you want and the circuitry will eventually depower the motor.

Problems with that is the current on the motor will peak till that shut down occurs and the carrier needs to go far enough to actually lock the trunnion. If only partially through the cycle that will be near the pivot and have the least amount of mechanical advantage. Any loading on the gear could overpower the mechanics and cause damage.

All of this may be moot it that condition is in the up position since should not encounter anything other than flight loads.
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Jul 13, 2019, 08:53 AM
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samp68's Avatar
More Info regarding failure of the E-Flite retract motors.

A friend who is really into small motors, etc. dissected a failed E-Flite motor and determined that the windings are intact; the point of failure is the two tiny brushes which supply power to the motor. To prove what he found, he took the brushes from one of the Ebay motors I gave him and replaced the brushes in the orignal E-flite motor...and suddenly the "magic smoke" returned.

So it would appear the most common cause of E-Flite retract failure is the brushes. After all, it is a DC motor. The Brushes are the component most affected by use.

Sam


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