92 tail sensitivity and still drift

[tndo504]

I got a 600N with the belt drive running with a v-bar with a 9256 on the tail. So far I have adjusted from 85 to 92 tail sensitivity and I still get a slight tail drift to the left in a hover, flip, and tail slide. I had a 611 before with the gain set at 37 and it fly fine. Nothing is binding and I'm kinda worried that 92 is just a too high of a number. Should I adjust it more? or is this a sensor calibration issue?

[tcast305]

Weird, check and make sure that cyclic and collective compensation is working the correct way. Example, on the bench, go quickly on positive pitch and you should see the tail adding more pitch. Here is the vstabi wiki on it: http://vstabi.de/wiki/index.php?title=The_tail_doesn%27t_hold_and_turns_ while_collective_up/down

I'm running 85% on mine with zero issues.

[d_wheel]

This seems to be a common problem with Vstabi. I have seen to many messages of this type for it to be anything else. I too am having the same problem. No matter how I set it up, how many times I recalibrate, etc., it still has a slow turn. This is both right side up and inverted. On the pirouette optimization page, the pointer slowly turns and the tail servo slowly goes to one end when sitting on the bench. I believe Mikado needs to admit they have a problem and come up with a fix.

Otherwise I am very pleased with the VBar! The cyclic performance and eye appeal are outstanding. Also, I seem to be getting a bit more flight time on my battery pack which is always good. If we could just come up with a fix for this little vexing problem, it would be as near perfect a product as I have seen in a long time.

Later;

D.W.

[tndo504]

Thanks for the respones. I love the v-bar and its awesome. Just that slight drift bothers me. Could I fix this by adjusting the tail link mechanically? Since its drifting to the left?
My tail compensation on the software reads 15 cyclic and 25 collective

[OICU812]

Large part of drift is the pots in the DX7 they're abit on the cheap side, you can calibrate them manually against your servo page on your tx and get them bang on.

[tndo504]

hmm...interesting. Imma try it out later this week and see. Thanks!

[d_wheel]

Large part of drift is the pots in the DX7 they're abit on the cheap side, you can calibrate them manually against your servo page on your tx and get them bang on.

Not using a DX7 here. Also, the drift has nothing to do with the transmitter. I have opened up the dead band to 55 just to see what happens, and it still drifts. Also, it stops when the sensor is disconnected. This tells me it is in the Vbar unit and NOT the radio.

Later;

D.W.

[klutz1]

I had the same issue with my 500.Tail drifting, loose, etc. turns out that my pre comp was reversed. I found the best way to verify is to center the collective stick (0 -pitch) slowly add pos. pitch and watch which way the tail pitch slider moves. If it moves away from the tail boom it is reversed. To correct you need to reverse everything, sensor on the overview page, and everything in the rudder page including rc input then verify.