warnked

I just got a new GTB2 and it won't power my motor; keeps throwing out the "motor rotor lockout" signal. Sometimes if I disconnect/reconnect the battery the motor will spin for about 2 seconds while giving throttle and then throws the error code again. Also, the gtb2 gets warm while sitting still and connected to the battery.

If I connect the same motor, tekin redline 10.5, to my Tekin esc it works perfect so it cant be the motor and the receiver isn't broken either, i checked that.
And yes i did initialize the esc with my transmitter and bound it many times.

Thank you!

MarkA

iTrader: (21)

On Novak's, that error is infamous. Generally related to a sensor issue so have you tried a new cable?

Grandturk

iTrader: (5)

If you're motor is getting hot sljust sitting there, it sounds like you've got your A B C wires crossed up there somewhere. Double check those.

tc5 man

Cant say i ever had that issue and i run the old GTB combo on my T4.1 and i run my sensored . The only issue i had was trying to get drag brake off and having to use min brake to get rid of it.

scorpion51503

iTrader: (7)

That's a Novak common issue have a box with literally 10 non working gtb2 if the esc is getting hot I would almost guarantee you will have to send to Novak before you turn it into a melted pile of plastic

warnked

thanks guys

68pontiac

iTrader: (10)

I'll be the guy to say I've never had a problem with any Novak speed controls and I've been using them exclusively for the last ~12 years.

I ran into this issue with the last GTB2 I bought. It was actually my motor that was causing the problem (a Trinity D3, for what that's worth). I found that when the timing cover for the motor was loosened, the problem went away. When the timing cover was tightened down, I would experience the same problem warnked is describing. I could "start" the motor by spinning the rotor manually and pulling on the trottle, but as soon as it stopped, it would not start again.

I disassembled the endbell (and contacted Trinity in the meantime) and after talking with Jim Deiter via email we determined that the three solder blobs that hold down the wiring inside the motor were built up just a little too high and were contacting with the screws that held the timing plate on. When they were loose, no contact. When they were tightened, they shorted out the stator. A little tape over the solder blobs fixed the problem.

Hope this helps somebody else!

warnked

Hey, thanks for this input!
I was really hoping i wouldnt have to ship the esc back and pay for a fix. I will definitely take your advice and check this out!
I've been triple checking all my wires and connections and settings and nothing is out of the ordinary.

fantomdude

You will have to send it off. I have had this happen to 2 havoc pro sc and a gtb2. I have had to send off everyone I have got and the gtb2 twice. Two of my havoc pros have ended up in fire balls. Novak has not been reliable at all for me.

warnked

well, i tried the tip, backed off the screws on the endbell and had some better results. So i took the end off and could see some tiny black sputters of what looked like contact arcs. I placed elec. tap across the tabs and where i saw the arcing burns and it seemed to work for a few minutes more but gave me the "rotor lockout" error code again....i was able to reach full throttle many times before failure though.

I connected the gtb2 to my other thunderpower motor and spare sensor cable and got nothing out of it.

I think I'll be sending it back to novak.