Can anyone help please??????

[bigbas]

PROBLEM WITH T REX 450 FIRST OFF NEW FLIGHT POWER LI POS BALANCE CHARGED ON BC6 WHEN ON GROUND WILL JUST REACH LIFT OFF AND THEN CUT OUTCASTLE SPEED CONTOLLER 35 AMP LEAVE JUST A MINUITE AT THIS SPEED AND WILL LIFT OFF AND FLY TILL BATTERY RUNS DRYAT CUT OFF SCORPIAN MOTOR FITTED ALL CONNECTIONS ARE OK ANY IDEAS PLS AS THIS IS DRIVING ME TO GO BACK TO MY NITRO THE PROBLEM IT WASTES A MINUITE OF BATTERY LIFE BEFORE U START FLYING IT IT SEEMS TO NEED TO DRAIN SOME POWER BEFORE IT STARTS TO BEHAVE IT SELF ANY IDEAS PLS WOULD HELP

[Disc]

One please don't SHOUT Caps lock on is shouting so knock it off

[Paulice]

First off please turn off Cap's lock, it makes your post hard to read and is called shouting on forums.

Can you say how you have set up the CC speed controller!
the chances are it's set up wrong, like for a 2s and not 3s.
Do you have the USB interface? if so you can print out the settings for us to see and better help you.

[scotty123]

I had a very similar problem....It turned out to be, that the esc detected a 4s lipo when it was first connected...It would spin up, then die off as the esc low voltage stepped in...If I unplugged and plugged straight back in it ran the pack down fine.... It was a different esc than yours. It had a facility on it to beep the number of cells detected when first plugged in....

Try charging your pack to 4.0v connect it and see what happenens....it was a pain to find, and the esc went back for a replacement and all was fine after that....

Hope this helps

[bigbas]

sorry about that did not realise i left cap lock on will go through settings again on speed controller sorry no interface to print details but a start to find a possible solution barry

[Baldie]

Had this on my 450 once, Turned out a charger i had was OVERCHARGING the lipo. Threw the charger away - Never had the problem again !
Can you check the lipo voltage before flight ?

[inferno]

Is it in governer mode? My esc has to be spooled up to full power before attempting take off...

[bigbas]

have checked lipo voltage as it should be will check gov mode now see if that sheds any light on problem never programmed one before as did not have new do u disconnet motor wires or just remove pinion sorry for stupid question but not into electric at mo always had nitro helis so eletric a new thing to me in helis

[Paulice]

Best is to back the motor away from the main gear so it can spin up and not turn the head.
then your safe to check settings on the controller!
Make sure the cel count is right and the throttle stick end points are right.