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T-REX 250 › Bad speed control
01-15-2009 12:15 AM  9 years agoPost 1
Jeff polisena

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westpalmbeachflorida usa

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I put 3 flights on 250 one was for set up and other two hovering then speed control shut down and now it will power up get hot shut off.
Has this happened to anyone else ?

I stole it ,flew it and gave it back ;)

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01-15-2009 12:38 AM  9 years agoPost 2
TaleGunner

rrElite Veteran

Deer Park WA

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is the ESC shutting down or the receiver?

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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01-15-2009 01:57 PM  9 years agoPost 3
Chucky777

rrApprentice

Webster, Texas

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Yea
Yes on both Talegunner for me.

I did not even connect the motor yet. I was doing set up and I was installing the tail servo while every thing was set on. then the servos gliched the reciever started to flash. I though well I ran the battery down. so i went to get another battery and nothing. I also hoooked up the motor and still nothing. I went to look for a reg battery. to make sure I did not loose the bind. and reciver came on. but now I lost a servo.

So now I got a bad servo and speed controller. and still has not even left the ground. never even ran the motor yet.

I bought the combo kit that came with the servos I am installing the Hitec Hg-5000 gyro w/servo. Spektrum DX7 w/ar6100e reciever. I have 3 Align 850 mAh batteries. all 3 cells.

Charlie

Is it the weekend yet?

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01-16-2009 02:27 AM  9 years agoPost 4
Jeff polisena

rrElite Veteran

westpalmbeachflorida usa

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The speed control is controlling power to RX so both are shutting down.I sent back for repair.

I stole it ,flew it and gave it back ;)

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01-16-2009 03:06 AM  9 years agoPost 5
TaleGunner

rrElite Veteran

Deer Park WA

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disconnect the bec on the esc then use a standard receiver pack to power the receiver then power the esc

Let us know what happens

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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01-16-2009 07:39 AM  9 years agoPost 6
Chucky777

rrApprentice

Webster, Texas

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Test
OK, I did as Talegunner said. and only the BEC funtion is bad. I connected a fight pack and then the speed controler to its 11.2 pack and was able to run the motor.(note i did this test real fast to prevent any feed back damage to my reeiver). So I guess the servo that not working took out the BEC funtion of the speed controller.

Charlie

Is it the weekend yet?

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02-14-2009 07:49 AM  9 years agoPost 7
Chucky777

rrApprentice

Webster, Texas

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I think I know what happen
I was watching Finless Bob over at Helifrek do his 250 build. He noted on the servo install the the servo wires where touching the other side and could get cut and of course carbon conducts. I bet I shorted out the servo and killed the BEC.

Is it the weekend yet?

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05-29-2009 09:45 AM  9 years agoPost 8
Chucky777

rrApprentice

Webster, Texas

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Finaly worked on this
Finaly got around to working on this. I was so mad I just put it aside all this time. I pull out the Align DS410 and inspected the wires and yelp the insolation was cut on the bad servo. All 3 wires had exposed the wire and was touching the frame. The servo still does not work nor does the BEC funtion on the speed controler. I was having trouble getting a repalcement servo (every one is out of stock). So I replaced all 3 with Hitec HS-45. They seam to fit better and do not touch the other side. Did however had to change the ball links to short ones. As they were touching the servo case and getting a small bind. the only thing left now is to replace the speed controler.

Charlie

Is it the weekend yet?

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