N201MKTurbo Posted February 26 Report Posted February 26 1 hour ago, Yetti said: The other thing I did which added some time is instead of using butt splices to connect to the plane Other than power they are all DB-9 connections. The connection to the KLN89B did not work, but I recently switched TX and RX so when I get out of annual I will test that. And will probably just swap it out with a GPS 175, but I really would like to stay away from Garmin. I have thought about putting a Dynon 7 inch screen in and using it for a Engine and ADSB-in screen along with controlling Transponder and one NAV unit. Good luck getting it straightened out.
PeterRus Posted Thursday at 07:41 PM Report Posted Thursday at 07:41 PM (edited) In the HDG mode (follow the HSI heading indicator)... Does the KAP-150 assume that the airplane should track course (e.g. 90 proper E) or the a/p truly tracks heading and the course can be affected by the wind? Edited Friday at 02:16 PM by PeterRus
AndreiC Posted Thursday at 08:19 PM Report Posted Thursday at 08:19 PM 32 minutes ago, PeterRus said: In the NAV mode (follow the HSI heading indicator)... Does the KAP-150 assume that the airplane should track course (e.g. 90 proper E) or the a/p truly tracks heading and the course can be affected by the wind? I don't know about the KAP150, but my STEC30 is supposed to be similar. The only signal(s) the autopilot gets is a left/right signal, which could come from either a CDI or from a heading bug in the DG. (It also gets signals from either the AI or its internal gyro in order to know the bank angle, but those don't affect the track to follow.) It just strives to keep the needle on the CDI or the heading bug centered. So unless it gets information from a ground source (VOR) or a GPS, it has no idea about the actual track. If you tell it to follow the heading bug, it will will keep the bug centered, so the nose of the airplane will be pointing 90 E if that's what you ask it. How wind affects this, or what track on the ground you follow is not its business. 1
Flyler Posted Friday at 02:35 AM Report Posted Friday at 02:35 AM 6 hours ago, PeterRus said: In the NAV mode (follow the HSI heading indicator)... Does the KAP-150 assume that the airplane should track course (e.g. 90 proper E) or the a/p truly tracks heading and the course can be affected by the wind? What you are describing is HDG mode. Follows the bug on the DG. It is getting that information from the DG itself, so if it has precessed or it is simply set to the wrong heading... It has no clue and just follows the bug. When you put it in NAV mode, the HSI course needle drives the AP. So, just in the nature of how a course works, it will be correcting for the wind.
Jake@BevanAviation Posted Friday at 02:38 AM Report Posted Friday at 02:38 AM @JHillier if the KAP150 will not track the desired heading and has a lateral parallel in NAV or APR mode you can adjust the RN pot that is behind the front bezel. You need a long tiny flat blade screwdriver to reach the pot. Also, be very careful to not damage the pot. If it is the old green and white pots they can break at the solder connection or you can wear out the groove for the flat head on the pot. NOTE: only adjust this pot if both heading and lateral track are off. The pot is roll null adjustment that will affect all lateral control modes. If the autopilot just tracks poorly have the roll servo looked at for start-up voltage. 3
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