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[malcolmfrary]

When winding on a ring, its best to keep the wound cable flat to the ferrite so that there are not twists, tape it down so that it stays that way, and leave a gap between the ends of the winding to stop the unwanted signal hopping from the one end to the other, bypassing the winding.
This is real "black art" territory.

[essex2visuvesi]

This is real "black art" territory.

We'll be reading the chicken entrails and Tea leaves next lol

[NFMike]

Excellent. Thanks all. I have had to extend the servo lead, so I'll definitely get some ferrite into the system.

Sadly I've had a clear out in the last couple of months and most of my dead electronics went to the recycling. But I'll have a trawl through my bits boxes before hitting ebay again.

[Netleyned]

Has Mr Action been consulted on this or is he away on his holidays.
He might be able to throw some light on the subject seeing its some of his equipment being used.

Ned

[dodgy geezer]

Excellent. Thanks all. I have had to extend the servo lead, so I'll definitely get some ferrite into the system.

Ferrite rings should be as close to the source of the interference as possible - so they should be on the motor power leads. You're not worried about long leads acting as aerials, you're worried about HF pulses actually inside the line, and trying to stop the connected electronics carrying them everywhere...

[RAAArtyGunner]

We'll be reading the chicken entrails and Tea leaves next lol

Remember to upend the tea cup, let it drain, turn it three tinmes clockwise, then 3 times anti clockwise, then turn the teacup right way up and read the leaves. 

[NFMike]

Has Mr Action been consulted on this or is he away on his holidays.

Yes - see toward the bottom of reply #7.

[NFMike]

Ferrite rings should be as close to the source of the interference as possible - so they should be on the motor power leads. You're not worried about long leads acting as aerials, you're worried about HF pulses actually inside the line, and trying to stop the connected electronics carrying them everywhere...

I'm going to put ferrites round the motor leads next to the motor and at least one as illustrated by essex man above next to the rudder servo. I might also put one at the other end too (to stop stuff going into the rx).

When I fix something it stays fixed!

[NFMike]

Remember to upend the tea cup, let it drain, turn it three tinmes clockwise, then 3 times anti clockwise, then turn the teacup right way up and read the leaves.

For us in the northern hemisphere it's "three times anti-clockwise, then three times clockwise".

[NFMike]

Slightly OT, but I've been doing a bit of shopping for ferrite and other stuff. I had a look on ebay and by chance some of the bits that fit my bill were in the Maplin-outlet there, and some were in Component Shop. So I had a check on each of their main websites as well. The actual bits were the same price on ebay and their main sites ... but ...
Standard delivery on the main site for Component Shop is £1.50, on ebay it was just 75p.
The delivery on ebay for Maplins was variable but came out at near £6. On the website it is just £2.99 for <£10 orders, free above that. As My order was already £8+ I was able to grab another small item for £1.99 and get the free delivery.

Just shows, you don't just need to shop around suppliers, you need to shop around within the suppliers.

[Stormbringer]

have you tried resetting and setting up the esc,s as the stepping could be that its not centred properly ?
also wireless modems etc could cause twitching

[NFMike]

have you tried resetting and setting up the esc,s as the stepping could be that its not centred properly ?
also wireless modems etc could cause twitching

This is all covered in the posts above.

[malcolmfrary]

Back to basics - that servo should not twitch.  Either its power supply voltage is not stable, causing the aiming voltage in its comparator to shift causing it to continuously hunt for its changing "new" position, or it has an internal fault giving that effect, or the signal feeding it is unstable.
Once that problem is solved, the others might vanish, if not, the possibilities causing them are narrowed.
In a past life, when looking at automatically generated fault reports, occasionally you ran across the case where everything seemed to be reported.  Closer checking usually revealed that one was missing - close checking of that seemingly good one would turn up a fault that left that working OK but put the hex on all of its mates.  Of course, sometimes there would be an unrelated fault that the false good item would be involved with, hence the need to eliminate anything that can be eliminated.