600e pro dfc drift only in sl

[nanmadpad]

My t-rex 600e pro dfc has the sk-720be. Hover in non sl mode is solid. In sl mode I get a quick drift to the left. What can I look for?

[georgi UK]

=] V4 or not?

[nanmadpad]

3.43 georgi

[georgi UK]

=] do you intend to update? We could spend time trimming 3.43 only to find V4 needs a re~trim, perhaps?

3.43 would benefit from a 200% hiller decay trim flight in SL mode...

[nanmadpad]

Thank you for the reply Georgi. I am new to this. My last helis I built were twenty years ago. I am slowly learning all this recent software. I got the 600e going pretty good except for the drift in sl. I would rather wait to upgrade to V4 as I do not want to add some possible issues after upgrading. Do you suggest I set hiller decay to 200% and see what happens?

[georgi UK]

=] yes, the way it works is you set the hiller decay to 200% on a cyclic bank, assuming the swash has been levelled this is the next stage. on a calm day hover the heli and watch how it behaves when you release the cyclic stick.

if it always drifts in the same general direction, make mechanical adjustments at the linkages until it hovers hands free, in your case I would do this in SL mode, when you are happy reduce the hiller decay to where you had it, should be it!

try to get equal turns for the adjustments you are making, ie drifts to the right = one turn longer on the RH link and one turn shorter on the LH link, sort of thing!

[nanmadpad]

Thank you Georgi. I will try that.