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HomeAircraftHelicopterFlybarless Rotor Head SystemsBrain iKon › brain 2 govner
03-05-2017 06:32 PM  16 months agoPost 1
digger

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swindon wiltshier England

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hi there,iv got a brain 2 set on my t-rex 700n dfc ,every thing checks out all is set ,but I cant get the gov to stay at an r p m,when you go to take off the revs come up then drop back then come up a bit more,and it keeps doing this the hole time ,it speeds up drops down,if I flick it into s1 the revs ingres but starts going up and down like before as iv said,im using the spectrum back plate sencer and its seeing the crank pin so it most be working.
has any one got any ideas because I'm stupt at this
thanks for reading this
Digger

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03-05-2017 07:13 PM  16 months agoPost 2
Mputu

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Killeen, TX

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I don't knw much about brin2 but most the of the gov works the same. if you are using spectrum sensor, just make sure you are getting enough power from the sensor. You might want split the the power and sensor wire and plugs, the sensor goes to gov port at the receiver and the power goes anywhere on the receiver that can draw more more or adequate power. Have you tested it without the Gov just throttle curse? if so, how was it running?

Fly hard, Land safe

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03-05-2017 07:25 PM  16 months agoPost 3
digger

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swindon wiltshier England

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brain 2 govner
it runs just fine on a old fastion v-curve,iv tried both ways split the wire ,signol wire to the gov port ,black and red to a spare power port,its still the same,i have two other brains but there not updated to the new software,and they work just fine like they always have ,but I cant get a response from msh helis ,anyway thanks for the input

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03-05-2017 08:01 PM  16 months agoPost 4
Mputu

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Killeen, TX

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When you said, you have two other brain and they work just fine. Can I said that you have swapped the other brain to this machine and it worked fine? If this is the case than the software upgrade maybe the issue here. I will contact the support from brain.

Fly hard, Land safe

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03-05-2017 08:07 PM  16 months agoPost 5
digger

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swindon wiltshier England

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brain 2 govner
no, not swopted them over yet ,but that is a good idea,also msh brain are blanking me for some reason as iv sent four e-mails and had no reply as yet
thanks again

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03-06-2017 01:30 AM  16 months agoPost 6
ticedoff8

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Morgan Hill, CA. USA

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MSH Brain FBL Unit
What email address are you using?

I use the Brain 2's gov on my Trex 700N and T600N - both are FBL.

I use 2 Align sensors that pickup the magnets mounted on the T700N's clutchbell. One sensor is connected to the Brain 2 and the other is connected to the TM1000 RPM sensor input for telemetry.

But, I use the Spektrum BPS on my Trex 600N without problems

Did you swap the red / black wires on the Spektrum BPS's servo connector?
Also, on the Gov page of the MSH Windows setup app - do you see the senor toggling and the RPM reading when you turn the motor with the starter?

Also, since you are using a Brain, in the Diagnostic screen, enable logging (20Hz) and select all the parameters for the gov and throttle:
RX throttle,
Throttle Servo,
Gov Engaged,
Head speed
Servo Voltage

Then fly it.
Afterwords, hookup to the PC and download the logs and see if the Gov ever engaged, the RPM looks like it is reading correctly, servo positions relative to the throttle in - etc.

I assume you have the "Gov enabled" checkbox checked on all the Brain 2 banks (right?) and you have the correct main gear ratio.

If the RPM line looks like it has spikes and periods where there is no reading, then the Spektrum BPS is flaky.
Look at the Gov Engaged to see if the Brain ever engaged the Gov in the first place. If the RPM looks good, the RX Throttle looks good but the Gov didn't engage, then it could be a tuning issue - if the carb is a little rich, then Brian gov may bog and never recover.

Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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03-06-2017 05:27 AM  16 months agoPost 7
digger

rrNovice

swindon wiltshier England

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brain 2 govner
sorry I put this in the wrong place ,all of what you have said is all done on my set up appart from the gov engaged box ,the sencer sees the crank pin with a tic,gov engaged no ,but it gives me a reading (speed of motor ) if I turn the engine over,all boxes are ticed correctly,so I don't no
thanks for the input ,sorry I put it in the wrong place
Digger

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03-06-2017 07:36 AM  16 months agoPost 8
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

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The RPM readout and log should be the head speed - not the motor RPM.
If the gov is not engaged, then the Brain will set the throttle servo to to the RX throttle (EG: if your throttle curve for RPM 1 is 40%, then the throttle out will be 40% and will not respond to changes to load).

Take a screen shot of the logs and post it here.

Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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