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sorkai · 04-09-2005, 06:52 PM

We are just testing a new plane with a 64ei Fuji Engine- Problem is servo enterference- throttle is moving up and down-- all the servos are digital except engine servo it's a hitech81 micro could that be the problem that it's not digital?- The reciever is a FutabaPCM81
Any help would be appriciated

rdespins · 04-09-2005, 07:20 PM

A friend had problems with a gasser like that, and it turned out being the ignition wires.

ron

Ramz-to-tha-Z · 04-09-2005, 10:27 PM

i've heard of this before with another guy that flies futaba and gassers. Come to find out, it was the rudder servo that was causing it (cheap 1/4 scale servo). As soon as he unplugged the rudder servo, it worked great. If i were you, i'd try replacing the servo.

Kevin McGrath · 04-10-2005, 08:04 AM

The type of servo is almost positively not the problem.

What type of plug is in the engine? Should be an "R" type.

How many inches are there between the radio components and the engine, including all wiring,servos and switches.

Are there any metal to metal conacts anywhere in the linkages?

Is the antenna of the TX fully extended during your tests?

Do not be tempted to fly the model until you eliminate the source of the interference.........

sorkai · 04-10-2005, 09:11 AM

Thanks for your replies- acording to your suggestions several things we have to rectify- believe me this brand new Wild Hare 540 ain't going flying before everything checks out

ronm · 04-10-2005, 09:22 AM

If you have the throttle servo mounted close to the engine, move it back to mid-fuselage and use a non-metalic pushrod.

Does it happen when the engine is not running, or only when running?

04-09-2005, 06:52 PM	#1
sorkai RCC Senior Contributor I am: Kai S Join Date: Apr 2004 Location: Corunna, Ontario Feedback: 7 / 100% Posts: 584 Total Props: 1	Advise on Fuji 64 Engine setup Remove this ad - become a site supporter! We are just testing a new plane with a 64ei Fuji Engine- Problem is servo enterference- throttle is moving up and down-- all the servos are digital except engine servo it's a hitech81 micro could that be the problem that it's not digital?- The reciever is a FutabaPCM81 Any help would be appriciated
	.

04-09-2005, 10:27 PM	#3
Ramz-to-tha-Z Guest Join Date: Jun 2003 Feedback: 0 / 0% Posts: 751 Total Props: 0	... i've heard of this before with another guy that flies futaba and gassers. Come to find out, it was the rudder servo that was causing it (cheap 1/4 scale servo). As soon as he unplugged the rudder servo, it worked great. If i were you, i'd try replacing the servo.
	.

04-10-2005, 08:04 AM	#4
Kevin McGrath RCC Pro Contributor I am: kevin w Join Date: Sep 2002 Location: Sault Ste marie,Ont. Canada Feedback: 0 / 0% Posts: 1,958 Total Props: 1	The type of servo is almost positively not the problem. What type of plug is in the engine? Should be an "R" type. How many inches are there between the radio components and the engine, including all wiring,servos and switches. Are there any metal to metal conacts anywhere in the linkages? Is the antenna of the TX fully extended during your tests? Do not be tempted to fly the model until you eliminate the source of the interference......... __________________ MAAC 6401LCD IMAA 27023 IMAC 3710 The Planet is doing what it has always done.......floods,volcanic eruptions storms, earthquakes.........but today there are more people in the way.
	.

04-10-2005, 09:11 AM	#5
sorkai RCC Senior Contributor I am: Kai S Join Date: Apr 2004 Location: Corunna, Ontario Feedback: 7 / 100% Posts: 584 Total Props: 1	Engine setup Thanks for your replies- acording to your suggestions several things we have to rectify- believe me this brand new Wild Hare 540 ain't going flying before everything checks out
	.

04-10-2005, 09:22 AM	#6
ronm RCC Supreme Contributor I am: Ronm Join Date: Dec 2002 Location: Mission, B.C. Radio of choice: Futaba # of RCs: 10 Feedback: 0 / 0% Posts: 5,625 Total Props: 0	If you have the throttle servo mounted close to the engine, move it back to mid-fuselage and use a non-metalic pushrod. Does it happen when the engine is not running, or only when running? __________________ Ron Mattiuz Flying Tigers RC Club "Flying an airplane is just like riding a bike...except it's harder to put cards in the spokes"
	.

04-09-2005, 07:20 PM	#2
rdespins RCC Contributor Join Date: Nov 2003 Location: Winnipeg, MB Feedback: 0 / 0% Posts: 279 Total Props: 0	A friend had problems with a gasser like that, and it turned out being the ignition wires. ron
	.

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