Jerky Motor Spool Up

Scottyb410 · 06-18-2012, 06:22 AM

Hi, I am new to the HeliJive.

I was running an electrics bench test with all of my gear out of the heli. When I spooled the motor up after programming (mode 4 and KSA), I noted that the spool up was not very linear and tended to "jerk" at certain intervals until it got to the desired motor speed. Almost like the motor lost power? I come from the Castle Creations world where the spool up was very smooth and linear.

Is this normal behavior while the motor is under no load?

Thanks
Scotty

NRPY · 06-18-2012, 01:53 PM

I think this is normal, especially when there is no load on the motor. When I do "motor only" vibe testing on Jive-equipped helis, the motor always spools up with very defined "ramps".

Scottyb410 · 06-20-2012, 03:35 PM

My spool up is not actually "ramped" more sloppy than anything else. It seems to be hunting for an RPM. Even when I turn the governor off it still hunts. I will shoot a video and post it tonight so you can see what I mean.

06-18-2012, 06:22 AM	#1
Scottyb410 Registered Users Join Date: Jun 2009 Location: Toronto, Ontario, Canada	Jerky Motor Spool Up Hi, I am new to the HeliJive. I was running an electrics bench test with all of my gear out of the heli. When I spooled the motor up after programming (mode 4 and KSA), I noted that the spool up was not very linear and tended to "jerk" at certain intervals until it got to the desired motor speed. Almost like the motor lost power? I come from the Castle Creations world where the spool up was very smooth and linear. Is this normal behavior while the motor is under no load? Thanks Scotty __________________ Goblin 700 HK 4525-520LE, SK720, Bl 9180, 9188, YGE160HV Goblin 630 Quantum 4135-530, SK720, Bl 9180, 9188, HeliJive 120HV Goblin 500 HK 4020-1350, SK720, Graupner HBS 660-770, YGE120LV, Trex 250, HK 2206-3900,SK720, DS95i YGE16A

06-20-2012, 03:35 PM	#3
Scottyb410 Registered Users Thread Starter Join Date: Jun 2009 Location: Toronto, Ontario, Canada	Spool up My spool up is not actually "ramped" more sloppy than anything else. It seems to be hunting for an RPM. Even when I turn the governor off it still hunts. I will shoot a video and post it tonight so you can see what I mean. __________________ Goblin 700 HK 4525-520LE, SK720, Bl 9180, 9188, YGE160HV Goblin 630 Quantum 4135-530, SK720, Bl 9180, 9188, HeliJive 120HV Goblin 500 HK 4020-1350, SK720, Graupner HBS 660-770, YGE120LV, Trex 250, HK 2206-3900,SK720, DS95i YGE16A

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06-18-2012, 01:53 PM	#2
NRPY Registered Users Join Date: Aug 2009 Location: California, USA	I think this is normal, especially when there is no load on the motor. When I do "motor only" vibe testing on Jive-equipped helis, the motor always spools up with very defined "ramps".