I thought Id just throw in a few observations here.

I have operated Hydra successfully using the DX6i coupled with NCC-70s and a receiver battery.

At Guildford there was an issue which resulted in the relays fluttering so we didnt run it because we couldnt arm it safely.

This was originally attributed to the leads for the new Roboteq controller we have added. On further inspection, when bound with a DX6 there appears to be no problem.

This got me thinking on the differences between what we had before and what we have now and it seems to be the BEC.

James Baker pointed out to me a previous issue with the DX6 which was along the same lines and he did a product recall to upgrade the voltage regulators:

http://www.fightingrobots.co.uk/forum.htmhttp://www.fightingrobots.co.uk/forum.htm

The Spektrum manual says the voltage should be kept above 4.8V and it could well be that when the robot is operated the voltage regulation on the BEC drops down and causes the receiver to drop its bind.

This comment does not seem to appear in the manual for the DX6 (or at least I cannot find it.

The voltage range for the BR6000 is 4.8V - 6.0V.

I am not putting this forward as a definitive explanation of the problem, just an observation at this stage.

I thought I may do some testing on the feathers using a BEC from Technobots to see if theres any joy with it, but also thought Id throw it into the pot for comments.

Andy