Tail interaction

[kev bell]

Hi people,

need your help on this one, my trex nitro super pro has a strange tail interaction. Running a gp750 gyro mounted at the front and in fast forward flight it tracks true. The problem happens when you pull up into a loop it climbs straight, comes over the top ok then turns left!!!!??????
I get the same problem if you flip it inverted. Got rid of swash interactions with full climb outs right side up & inverted but cannot stop the tail turning?

Thought if was me but the 500 racks true, any ideas?????

[squeaky pete]

wonky thumb

[kev bell]

Thats what i thought, but tried the trex 500 & blade 400 with no problems. Could it be the gyro (gp 750)

[squeaky pete]

turn the gain up abit higher? what tail servo u using??

[kev bell]

Ds620 had it at 65 & increased it to 75, no change

[squeaky pete]

is that in the atv or gyro menu????

[kev bell]

Using a dx7, on the gyro sense menu, 35 for non head hold & 75 in heading hold. Gyros at the front do you think moving it to the back would help. Its stange as it only happens when going inverted, loop, flip or rolls

[squeaky pete]

whach it up higher lol

[GravityKills]

it could be a vibration problem. I once had the same on a 450 with a Logictech 2100.
Only in inverted hover it was drifting badly.
I'd have a look at the main shaft bearings. I don't think it's a likely explanation, but check anyway...

[kev bell]

Cheers for that, will check them and try another set of gyro pads

[Tom Burgess]

What blades? Could be a phasing issue.

[kev bell]

Still using the set that came in the kit, align 600d carbon fiber