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Midland Helicopters . HeliProz . ZoomsHobbies

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e-JR Voyager E > JR Voyager Electric quits in flight
 
 
Moonshine
Heliman
Location: Omaha

I have a JR Elec Voyager with Hacker C40 8L brushless motor and Hacker Master 40 3P Speed controller. I am running 10 cells 3300MAH. Heli flies great for about 4 or 5 minutes and then comes to a complete halt and falls to the ground. So far the repairs have been minimum but I am now afraid to fly it. This has happened the last three times I flew it. I suspect the speed controller is the problem but I get the double bleep when I connect up which indicates that the brake is OFF.
Do I need a different speed controller or is this one getting too hot? I have it mounted very loose and I would not know how to get more air around it. Any suggestions?
10-11-2003 Over year old.
 
 
estevens
Senior Heliman
Location: Phoenix, Arizona

Are you using the Heli version of the speed controller or an airplane version? If it's an airplane version it probably has a voltage cutoff level. I've use the heli version of the 40-3P without any problems, FWIW 2 beeps means the speed control is in governor mode (it it's the heli version)

Eric in Phoenix
10-11-2003 Over year old.
 
 
Moonshine
Heliman
Location: Omaha

When I ordered my Brushless Motor from Hacker, I also told them I wanted the proper Speed Controller. They sent me the 40 3P and I just assume its the heli version. How do I know for sure?
10-11-2003 Over year old.
 
 
estevens
Senior Heliman
Location: Phoenix, Arizona

Heli should be printed on the speed control also stay clear of any BEC option. I ran mine on 12 cells with no problem.
Eric in Phoenix
10-11-2003 Over year old.
 
 
Moonshine
Heliman
Location: Omaha

JR Voyager Electric quits in flight

Well their is no HELI printed on the side of my 40 3P speed controller. Wonder if they sent me the wrong one. In the instructions, they explain how to eliminate the Brake and I did this. Think I'll call Hacker tomorrow and see whats up. Thanks so much for the information.
10-11-2003 Over year old.
 
 
rcadd1ct
Elite Veteran
Location: Richardson, Texas

Also make sure that it is not overheating and going into thermal shutdown.

Whey you are in part throttle you are at the least efficient point of the throttle curve. This effeciency is lost as heat.

You might try regearing to put the RPMs of the motor more toward the peak efficiency.

-RCA .......... Making Cuisinarts Fly!!!!!!!
10-11-2003 Over year old.
 
 
estevens
Senior Heliman
Location: Phoenix, Arizona

Sounds like you have definitely got the airplane version. You are probably reaching the voltage cutoff. Your problem does not sound like a thermal problem as the Hacker decreases power output rather than shutting completely off (unlike some other controllers) when it begins to thermal. If it was thermal, you would begin to loose power and the helicopter would settle in, rather than dropping out of the sky.
If you got it direct from Aeromodel, ask for Tim Lime. He will know what you need.

Eric in Phoenix
10-11-2003 Over year old.
 
 
NERaptor
Heliman
Location: Omaha, Nebraska

Are you sure you know what you are doing?
10-12-2003 Over year old.
 
 
rcadd1ct
Elite Veteran
Location: Richardson, Texas

He shure does.

He crashed his heli and is asking WTF?

Sounds like a pretty good plan to me.

-RCA .......... Making Cuisinarts Fly!!!!!!!
10-12-2003 Over year old.
 
 
NERaptor
Heliman
Location: Omaha, Nebraska

Moonshine, Take note of the BEC comments above...might want to try it with a Rx pack to eliminate the BEC.....
10-12-2003 Over year old.
 
 
Moonshine
Heliman
Location: Omaha

Ok, just give me an answer to these 2 questions:

Do I want the BEC off or on?
Do I want the governor set at Mode 1 or 2?

I am using a Hacker C40 8L with Hacker 40 3P speed controller.
Flying a JR Electric Voyager...
10-13-2003 Over year old.
 
 
estevens
Senior Heliman
Location: Phoenix, Arizona

Moonshine,
the reason I commented about the BEC is because the controller that has the BEC option will not handle as high a current load when running 12 cells. I think the biggest issue you have to address is if you have the Heli version of the speed control. If yours is an airplane version, it will have a preset voltage cutoff. On the Heli version you will run out of adequate flying power before the controller will actually shut off (lower voltage setting). I would recommend, however, if you exhange the controller to get the 40-3P without the BEC option.

Eric in Phoenix
10-13-2003 Over year old.
 
 
Moonshine
Heliman
Location: Omaha

JR Voyager Electric quits in flight

EStevens, thanks for you prompt reply. I have a call in to Aero Model who sold me the Hacker stuff and as soon as I get a reply (They were all out when I called) I will let you know how I came out.
10-13-2003 Over year old.
 
 
Ben74
Senior Heliman
Location: Long Beach, CA

your problem is definitely due to having the wrong version of ESC. the airplane version will cut the power to the motor when the battery voltage falls below a certain point, just like it's supposed to. the heli version of the ESC does not do this.
10-14-2003 Over year old.
 
 
Moonshine
Heliman
Location: Omaha

Thanks Ben74, I have contacted Aeromodel where I bought the ESC. I think you are right.
10-14-2003 Over year old.
 
 
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e-JR Voyager E > JR Voyager Electric quits in flight
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