Technical, Techniques, Hints, and Tips > Radio Equipment

Futaba going crackers

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Tug:
Twas said "There isn't really much to go wrong with a crystal. "

But crystals are very delicate insides, ( a postage stamp with a wire welded to each side allowing the wafer to vibrate and the lower the frequency the bigger the wafer, But miniscule postage stamps.)

  rattling spares around in a tobacco tin is not recommended [but often seen]
Tug
(yes I am back, new phone and new address but!)

Barthez:
My old Futba attack set gave me problems for a while then a fellow club member put a signal strength meter on it. My set did not even move the needle on the meter. I don't know why it lost it but it did. Changed the crystals same result.
Are you able to check the signal strength ?

tigertiger:
I had a similar problem with my futaba. But with the sail winch.

However mine was nothing to do with the radio kit.

Symtoms
Servo appeared to be fully rotated in one direction and jammed. Boat only went around in circles.
 However after removing servo arm and servo the problem dissapeared. It reapeared again, and on dismanteling and reassembly it sovled itself agian.

Actual cause.
I had changed to a more powerful futaba sail servo, but being lazy used the same servo arm.
However the bit that fits over the splines on the servo was of a softer plastic than the one provided with the bigger servo.
What was happening was that under load the arm was slipping, until it reached the end of travel and then was jammed against the hull.
So every time I tried to rotate the servo it jitterd.

May not be the cause of your problem, but it is one to watch out for.

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