Home > VansAirForceForums

-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

Old 06-30-2021, 08:00 AM
49clipper 49clipper is offline
Join Date: Dec 2006
Location: Belleville
Posts: 315
Default RV-6

Why does my gmc 507 ap head after about 45 seconds in use, violently pitch up? It sends the pitch trim tab full nose up every time. All the Autotrim is turned off, esc is disabled, Ray Allen pitch servo. Yesterday while testing the roll system after about 4 minutes, the AP turned on the ALT hold and then it pitched up. I just don't get it.
Reply With Quote
Old 06-30-2021, 09:19 AM
Norman CYYJ Norman CYYJ is offline
Join Date: Feb 2005
Location: Victoria B.C.
Posts: 1,424

Sounds like a bad switch or wiring problem. Try your AP at different power settings it might show the fault at various vibration levels.
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -6. The time now is 07:56 PM.

The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.