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HomeAircraftHelicopterHelicopter Main Discussion › Bench Testing a nitro heli without main blades on
04-13-2014 02:52 PM  4 years agoPost 1
rudyy

rrElite Veteran

E. Amherst, NY

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I need to troubleshoot the backplate rev sensor/governor. Will there be an issue if I take the main blades off and fire up the heli? The engine will be running at no load.

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04-13-2014 03:00 PM  4 years agoPost 2
Dr.Ben

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Richmond, VA, USA

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You'll need load from blades to be able to tell anything. There is a limit to the rpm control the governor can muster when there is no load on the head.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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04-13-2014 03:13 PM  4 years agoPost 3
Dan Minick

rrKey Veteran

Columbus, WI

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what are you trying to figure out? If its just weather the sensor works or not I know in the Vbar you can just look at the screen

Team Synergy, Team FBL Rotors-------if its not broke...it will be!

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04-13-2014 03:23 PM  4 years agoPost 4
rudyy

rrElite Veteran

E. Amherst, NY

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I have the AR7110R backplate rev limit sensor on the YS60SR. The AR7110R sensor green LED wil be on when my throttle stick passes 20% and so I know it is set up right. The red LED also blinks when I manully turn the crank shaft.

Everything is ok when running in normal mode. The problem is when I go from normal to idleup1/idleup2, the engine rpm drops dramatically instead of reaching the desire rpm.

Here is my throttle curve and governor setting in my JR X9503

Normal: 5-60-100 Governor @85%
IdleUp1/2: 100-100-100 Governor @90%

Should I recalibrate AR7110R one more time to teach it the lower and upper endpoints?

Rudy

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04-13-2014 03:30 PM  4 years agoPost 5
Dan Minick

rrKey Veteran

Columbus, WI

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here is the best i can think of. the AR is not controlled by the throttle curve rather the Gear channel. read this should follow the 9503 pretty closely

If using the JR X9303 2.4GHz, the following is recommended.
In System mode under device, activate the limiter program by
selecting GOV under the Gear channel. The RevLimit will then be
controlled and adjusted via the Limiter screen located in function
mode. A target rpm is available for each flight mode. 0% turns off the
limiter, while the larger the value the higher the target rpm.
Note: The Gyro Gain channel will plug into the Gear channel and
the gyro screen will be used to adjust the gyro gain. (See the X9303
manual for more detail on Gyro Gain settings.)

Team Synergy, Team FBL Rotors-------if its not broke...it will be!

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04-13-2014 06:46 PM  4 years agoPost 6
dkshema

rrMaster

Cedar Rapids, IA

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Gotta ask -- when you calibrated the TX throttle to the AR7110R did you have a linear 0 to 100% throttle curve dialed in?

And you seem to be aware that the limiter setting is accomplished though your X9503 GOVernor menu and you have the GOVernor function enabled.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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