Hi Thomas,
after vibs on the head seemed to be under control (values below 15) I have done some further test flights today.
Observations I made:
1. bail out seems to work fine for about 3 minutes.
2. but the longer I fly the more unprecise bailout seems to work- so that I have strong drifts again after some minutes
3. it doesn't relevel itself again in normal flight (hc3sx itsel again)
4. even after landing the swash plate is sometimes (up to about 45 degree) strongly unleveled when using bail out after landing despite swash plate is completely leveled in normal flight mode (which reflects the drifts in flying while using bail out).
At home I did some vibs analizations again.
Initially I have really low vibs (total 11 and one peak of max 20).
Attachment:
vibs protos 20,12.2014.png [ 19.7 KiB | Viewed 784 times ]
After some minutes vibs are higher (total 25 and peaks below 45) - but in an acceptable range I think.
Attachment:
vibs peaks on bench 20,12,2014.png [ 24.48 KiB | Viewed 784 times ]
The only explanation could be that vibs are much higher during flights.
The problem is I can't test level of vibes with blades on the heli and flying.
Do you think vibs level on the bench are still too high?
In the meantime I've orderd almost all bearings for replacement (as vibs rise after some minutes and it could maybe be caused by higher temperature of the bearings) - but not yet received them. Honestly I don't think my problem will be solved with the new bearings - maybe slightly lower vibes but not drastically actually level seems not so bad.
Any other ideas I could try?
BR rainer