I converted my Trex 500 to FBL a few months ago with a BeastX FBL unit and a Microheli head. It flew pretty well but I did notice that it wanted to slowly drift backwards when in a hover. I'd never changed to stock Align blades so I bought a set of Mavrikk G5 Pro FBL blades and upgraded the firmware to the latest version and then went through all of the setup again. I use a swash level tool, digital pitch gauge, micrometer, laser level etc during setup so I'm sure everything is as close to perfect as you can reasonably get. Now it fly's even better than before but still has a slight drift backwards from a hover. CG may not be perfect but it's real close, just out of curiosity I moved the battery as far forward as I could while still being able to get the canopy on and it didn't seem to change. I can't remember what it's called but I played around with whatever menu item lets you fine tune the swash at the field retrimming it with significant fwd elev and it made no difference. It's slight taking a few seconds for the tail to start to drop and drift backwards however it compounds as it goes and picks up speed as it continues to tilt back. In normal flight you would never notice it but my other FBL heli's don't do this and sit stationary for a long time until they finally begin to drift of in a random direction. The 500 always drifts backwards........any idea's?
The next problem popped up with my Trex 450 pro V2 3GX today. I've probably only flown this thing a dozen times but it's always been pretty solid. Recently I upgraded the firmware to the latest version and installed Radix FBL blades. I've flown it a few times since these changes and it flew very nicely. Today I brought it to the field and after 1-2 minutes the tail started to feel bouncy. I brought it back into a hover and did some stationary piro's and the tail would bounce when coming to a stop. I landed and lowered the gain and went into another hover. Now the tail was bouncing back and forth just hovering. I tried raising and lowering the gain significantly in both directions, regardless of what I tried for settings the bounce continued to get worse. I decided to pack it in before I crashed it. I hoped it was somehow temperature related since I took it out of a warm house and put it into a warm car then took it out to the 25 degree flying field where it flew fine for the first 1- 2 minutes and then got worse from there. It made sense that as the unit got cold fast that it began having issues. It's been back in the house for the last 5-6 hours and I tried hovering it in the garage, the problem is still there just as bad as when I left the field. Radio is a DX8 and gain is set at 40%......after flying it this summer and fall that was the best setting I found for it. Any idea's on what's going on?
The next problem popped up with my Trex 450 pro V2 3GX today. I've probably only flown this thing a dozen times but it's always been pretty solid. Recently I upgraded the firmware to the latest version and installed Radix FBL blades. I've flown it a few times since these changes and it flew very nicely. Today I brought it to the field and after 1-2 minutes the tail started to feel bouncy. I brought it back into a hover and did some stationary piro's and the tail would bounce when coming to a stop. I landed and lowered the gain and went into another hover. Now the tail was bouncing back and forth just hovering. I tried raising and lowering the gain significantly in both directions, regardless of what I tried for settings the bounce continued to get worse. I decided to pack it in before I crashed it. I hoped it was somehow temperature related since I took it out of a warm house and put it into a warm car then took it out to the 25 degree flying field where it flew fine for the first 1- 2 minutes and then got worse from there. It made sense that as the unit got cold fast that it began having issues. It's been back in the house for the last 5-6 hours and I tried hovering it in the garage, the problem is still there just as bad as when I left the field. Radio is a DX8 and gain is set at 40%......after flying it this summer and fall that was the best setting I found for it. Any idea's on what's going on?