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T-REX 500 › Motor starts at midstick
03-09-2012 04:42 AM  6 years agoPost 1
RMO

rrNovice

Brownsville, Texas - USA

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I have a new T-Rex 500 with a Scorpion 1600 KV motor and a Turnigy 80 amp ESC. My problem is that the motor won't start turning until the throttle stick on the transmitter is at midpoint. After midpoint the motor does ok. I have an almost straight throttle curve set up (1st. point-0%, 2nd. point-33%, 3rd, point -51.5%, 4th.point midstick-70%, 5th. point-77.5%, 6th. point-86%, 7th point-100%). I would like for the motor to start turning when the stick is close to the bottom. At midpoint I should be hovering.
I am using a 6 cell 22.2 v. Turnigy battery to power the model.
Is my only solution changing the throttle curve on the transmiter to 70% at the bottom of the stick or is there something else that I can do? Could it be a defective ESC? I have the ESC programed for soft start, no brake and the timing is set to low.
I would greatly appreciate your Ideas or suggestions. Thanks

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03-09-2012 10:30 AM  6 years agoPost 2
wrongler

rrProfessor

Brewerton, New York

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[url=http://

Watch at YouTube

watch the entire video Jive/Jazz Programming, It will show how to set the throttle %. This may help.

Bill Whittaker

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03-09-2012 01:30 PM  6 years agoPost 3
dkshema

rrMaster

Cedar Rapids, IA

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It sounds as if you need to go through a proper setup of your ESC which should include calibrating the ESC to understand what your overall throttle travel looks like. Make sure you use a linear, 0 to 100 % curve when you do that.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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03-10-2012 05:38 PM  6 years agoPost 4
RMO

rrNovice

Brownsville, Texas - USA

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Thanks guys your posts were very helpful. I am new to electrics and had not set up my ESC properly. I set up the throttle limits and it's working great. Thanks again.

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