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Posted for John Huft <aflyer@lazy8.net>:
Barry, absolutely call Jim Younkin at TruTrack. The autopilot is
programmable, and he can tell you how to fix it. Properly set up, the
TruTracks fly better in turbulence than any other autopilot.
The IO-550 has a bad reputation for hot starting. There is a system of
running the boost pump for a minute or something that I will let someone who
uses it describe. I have a 550 in my C-185 that I have owned for 5 years. Even
though it is not as tightly cowled as a Lancair, the system I use gets me a
quick start every time regardless of heat soak time...10 minutes to an hour.
Full rich, 1/2 to 5/8 throttle. Mags on. Start cranking, and after 2 or 3
revolutions, turn on the boost pump. Then engine will catch, so then let off
the boost pump, and manipulate the throttle. If it starts to die, open the
throttle. If rpm get too high, reduce throttle, until it settles down in about
5 seconds. A little practice will make it an easy, no stress deal. All you
need is 3 hands :o)
John
Barry Hancock wrote:
1) I have the Tru Trak A/P. This is perhaps the biggest love/hate relationship I have. In smooth air, it is a dream. In turbulence, even light chop, it is a nightmare as it correct for every minor deviation and does it's best to make me sea sick...what's worse it won't hold altitude. Does the AP possibly have an internal leak of some sort? The altitude needs constant resetting, as well....
2) Hot starts (IO-550). I really haven't had any major problems, yet. Today I stopped in Page, AZ on the way home. It must have been 92 degrees and I had about 40 minutes between shut down and start up. My cold start procedure gets me started within about 3 blades every time. When starting at Page today, I hit the primer for 5 seconds with the throttle cracked about 1/2". Because of the high DA, I had the mixture leaned about 3/4", as well. The engine fired after about 6-8 blades, but as soon as I let off the starter, it would die. This happened about 4 times until I finally kept the primer in and the throttle in another 1/4" (this produced about 1500 RPM on start).
Any thoughts or suggestions on these things?
Barry
122LL
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