"Hi Lyn,

Yes, the company I work with tried an X8 for surveys but it was not very tolerant of strong winds.  The going into a strong headwind, the X8 would oscillate so much that it showed even on a gimballed camera.

The FX-79 that we fly now seems…"

"A small tube of Krytox is about £80 but I found some Rocol X33 silicone grease which is rated to -78C.  I'll try with the silicone first but if that it's not performant, I'll get some Kyytox.  Thanks. DavidJames said:
Tim,   The Krytox oils are…"

"Thanks David.  the BLS253 looks good.  I'll buy one and put it on the trial balloon flight to see how it performs.  What do you think about silicon grease instead of oil? DavidJames said:
Tim,   The BLS253 operates over a wider voltage range and…"

"It's on the todo list :-)

Going to follow these instructions: http://diydrones.com/profiles/blogs/tutorial-programming-your

Got a balloon launch in the next few weeks to test and I'll get back to you with the results.....
Hans H. said:
nice MK…"

"Thanks David.  There's a significant price jump in brushless but it's probably worth paying.  I've no experience of brushed servos (motors yes, but not servos) any comment on these please?…"

"Oh yes!  I forgot about that one.  Thanks Chris. The Reg seems to have been running that project for about 4 years with not much happening in the last year or so.  Unless I've missed something they've been held back by permissions from FAA et al.…"

"Thanks for your reply Hans.  I've got lots of experience with Pixhawk, fix wing and multicopters - I know my elevons from my rudders!  I fly them for a living.

There's not just ONE try, it's four more balloon launches to test different stages.…"

"I've managed to set up flight modes in QGroundControl but not APM Planner.  The flight modes are different in QGC and there does not seem to be a page to explain the differences.  I'd still like to use APM Planner because of the better documentation."