Hi

At home,RMG winch, when sheeted in hard, no load of sails. I am getting winch creep, 

appears to slide out on notch and then immediately tighten up…..

 

has anyone found this before? A solution?

thank you for any ideas,
Stephen

This sounds like 'dither'.

See the RMG manual on Input Deadband.

Input Deadband
Input deadband is the amount dithering in the Rx signal that a servo can tolerate without responding to by constantly jittering. This is adjustable from 0.8 to 10 microseconds. Deadband adjustment allows the optimisation of TX fine trim control. The default setting is 5 microseconds.  (this is for the E version, earlier ones have different values)

John

 

Edited January 16, 20251 yr by John Ball
added model E Ref

This may sound daft, but can you wind the winch line in the other direction i.e. arrange things so that the sheeted in position is at the other end of the winch travel?  Obviously you need to reverse the servo output on the transmitter as well.  

There are two reasons why this might work:

The first is that the feedback potentiometer might be getting worn as the servo keeps trying to stop in the sane place.

The second reason why this might make a difference is rather complex but it's likely that the source of the issues is variations in the voltage output from the feedback potentiometer in the servo, which is in turn cause by variations in the supply voltage to the pot, which is in turn caused by the operation of the servo motor.   Depending upon the exact design of the servo, it is possible that these fluctuations will be less when the feedback pot voltage is low i.e. they will be lower at one end of the travel.