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250 Class Electric Helicopters 250 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


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Old 10-13-2019, 09:56 PM   #1 (permalink)
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Default Trex 250 motor rotation

What is the correct direction of the main motor rotation? I have been working on my T. Rex to 50 pro for the past 2 years. I am disabled so I don't always have time to work on it. Last time I flew it it would not get off the ground. I think I have the rotation backwards, and/or the main gear put on upside down. Should the main gear show the T. Rex logo from looking at it from underneath? Any and all help would be appreciated.

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Old 10-13-2019, 10:31 PM   #2 (permalink)
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Lettering on the main gear one way bearing assembly is up, towards the main rotor.
Main blades rotate clockwise as viewed from above, so the pinion gear on the motor must spin counterclockwise as viewed from above.


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Old 10-14-2019, 12:01 AM   #3 (permalink)
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And if it doesn't spin in the correct direction, simply swap two of the motor leads from the motor to the esc - that will reverse it.
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Old 10-14-2019, 01:05 AM   #4 (permalink)
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Main gear has lettering facing down as looking at ala copter from the bottom as in the picture. I'm a bit confused.

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Old 10-14-2019, 01:44 PM   #5 (permalink)
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Thank you very much for all your assistance. I really appreciate it!!

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