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🏠Home🏠RC Main Discussion › Need help with radio interferance with my helicopter
02-14-2021 11:42 AM  83 days ago
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falcon888

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France.

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Need help with radio interferance with my helicopter
Hi peeps im renovating an old hirobo falcon 888 and have changed the old nitro engine with a gasser ngh g17 and im having lost of problems with the interference from the ignition system ive tried moving it as far from the reciever as possible and it doesnt help, would changing frequecies help.im still using the original reciever and servos. has anyone had this problem and how did you get over it?
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02-14-2021 04:30 PM  82 days ago
tommytt1

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Mercerville, NJ, USA

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What frequency band are you on, AM, FM, 2.4ghz?I made a mistake once, but I was wrong?
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02-14-2021 06:02 PM  82 days ago
falcon888

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France.

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Hi im on FM its all old kit from the 80's
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02-14-2021 06:08 PM  82 days ago
falcon888

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France.

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i have since posting checked the sparkplug cap and it wasnt on properly so i fixed it this has sorted most of the problem out but the tail rotor servo is doing its own thing a bit il change it for another and see what happens.
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02-14-2021 09:53 PM  82 days ago
tommytt1

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Mercerville, NJ, USA

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Glad you found it. Metal to metal vibration will cause it on fm for sure. If the gyro isn’t mounted tightly it’ll cause the tail servo issue. Gassers vibrate that’s for sure. I made a mistake once, but I was wrong?
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02-15-2021 03:29 AM  82 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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/
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So, your heli has a CDI with its own battery.

Your receiver also has a battery.

Try to run both systems independent as posible.
Check all cables on your helicopter, need to be as straight as possible, avoiding "pigtail".

Isolate the servo which have the interference. Install a ferrite ring in the servo's cable.

If your are using bec's, install ferrite ring to cable output to receiver or CDI.

Do always a range check prior to fly your gadget.

Tail servo... It is always the problem. Check the double side tape and try different types, softer or harder... Don't forget the ferrite rings.

Boom supports... Avoid that FM antenna may not be parallel to boom support and far away the CDI cables.

/
Saludos cordiales,
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