Mirdain

Hi All,
I have a HPI MT w/ a nice Sirio .15 engine.
I recently upgraded the radio system w/ an Airtronics MX3S FM transmitter and two new metal gears servos.
I have several questions/issues :
1- when I approach the glow plug igniter from the engine cooling head or when I touch it, the servos go nuts...
2- the servos are always emitting some noise like they are turning (eventho I cannot feel them turning),
3- the steering servo sometimes takes control itself for a split second and steers the car to the left....
I would have never thought brand new equipment would bring such hassle...
Any idea/hints/tips would be very much appreciated...

ryan_t888

When the glow plug igniter makes any type of contact with metal it will create a frequency. The radio system you are using may pick up this frequency and respond with eratic movement. As long as there are no glitches while the igniter is off you are fine.

In most cases this is just servo stress. In other words the servo is working to keep a certain position and it does this by applying a certain amount of torque. Just make sure there is no binding in your linkages where it would create any problems.

Ryan

Mirdain

Thanks Ryan,

1-I will keep trying switching FM frequencies in hope I will get one that does not pick up the igniter !
2-The servos are still noisy even when I remove servo heads (no load on servo)...
Thanks.