TL-Ultralight TL-96 servos.

[Chape]

Hello:
I'm considering upgrade my TL-96 with a D-100 plus servos to have AP capability. I think TL-96 is a quite knew plane, but for convenience I'll tell that it is simillar in specs and performance to a Zenhair 601 but in composite construction. Low wing, about 9,2 meters wingspan, 12 m2 wing area, 450 Kgr MTOW (600 in LSA cert.) and about 200 kmh cruise speed. Browsing your "Servo App Guide" I suspect that SV32 should be enought. At the end, even almost all RV's use SV32, so I think that for a lighter and slower plane those should suffice. What do you think?

I know that you have your beta-testers list full, but as a new type of plane installation, could I have your support if something should be changed to have success with the aplication swaping me the servos if necesary?

Regards,
Alejandro.

 

[dynonsupport]

It probably is an SV32 application, we agree, but there always is a chance that due to install location or other factors that an Sv42 could be needed.

If the install is in a new plane that nobody has worked with before, we are more than happy to swap servos with you if needed. So feel free to start with the SV32's, and if they don't work we'll trade you for 42's.

 

[Chape]

Steep has been done. My D-100/AP74/2 SV-32 have arrived. D-100 has been instaled and working and now I'm working in the servos instalation.

Even when I have read the docs, one question arrises: I see that the servo arms rotates freely more than one turn, so I suspect that central position of the arm is a "relative" aspect. That is: Is it necesary to unscreew the arm locking nut to remove the arm and recolocate it rigth angled with the push-rod when the axle of the servo is in a suposed "center position"? Or doesn't matter and the servo "learns" neutral position in calibration phase?

Reading the calibration process, I supose the later, but I'm not sure.

Regards,
Chape.

P.D. I promise photos of the final instalation....

 

[dynonsupport]

It is not necessary or recommended to remove the servo arms for installation. The servo calibration process takes care of the installed arm position.

 

[Chape]

I'd finished the installation of the D-100, AP-74 and servos. I attach some photos. I have fly about 3 or 4 hours and find that when the meteo conditions are not much steady, roll servo slips frequently. I see "NAV", "TRACK" or "GPS" (depends the mode) blink in yellow for a short lapse of time but very frequently. Both torques has been set to 100% (I can override the stick without problems) and sensitivity are set to default (10). Pitch behaviour is much less problematic (it only demands trim adjustment from time to time). By other hand, even when roll servos slips frequently, the AP could steers the plane in the right way, i.e. it could make their function.

I don't know if this is usual, if it could be bad for the servos or if it could be solved in any way. Perhaps changing the settings or changing the servos to a bigger one.

Attached follws 3 photos in a ZIP file (sorry, I don't know how to insert photos...)

Regards,
Chape.

 

[dynonsupport]

Slipping does not damage the servos. The only time slipping is a problem is if it is not flying the aircraft well. If the aircraft is flying OK, then there's really no reason to change anything.

If your torque is already at 100%, then the only option would be a bigger servo.