Mailing List lml@lancaironline.net Message #36709
From: <JIMRHER@aol.com>
Sender: <marv@lancaironline.net>
Subject: Avionics Questions
Date: Thu, 13 Jul 2006 16:26:33 -0400
To: <lml>

Gents:  I greatly appreciate your feedback relative to my previous questions about building the “ideal” panel for my IVP.

 

Thank you!

Hi John,

If I'm loosely included in the Gents list? I can comment on some of your questions but it is qualified as IMHO, and "Ideal" limited.

Jim Hergert L4P 400 Hrs.

 

 

 

I would appreciate your feedback relative to the following:

 

1)  How does the Freeflight 1101/1201 compare to the Garmin 480?  Lancair is telling me that the 1101 is WAAS certified, but the freeflightsystems.com web site only says that the 1201 is WAAS certified.  It doesn’t mention the 1101.  What is up here?

I understand that the 480 uses the Freeflight GPS. That said I think it is the difference in certified vs not certified. With an Experimental you only need to comply with 146a which is the 5 times per second GPS update to allow approaches to LPV min. about equal to ILS min. But I refer you to Keith Thomassen, who would answer your question clearly; http://www.avionicswest.com/training/maintrainingpage.htm#IFR

2)  How does the TruTrack Sorcerer Autopilot compare with the STec 55X in capabilities?  Which/what autopilot would you recommend based on your experiences?

No comparison in my book. I have the TruTrak on my 4P and love it. It is my ultimate back up and required for Flight level altitude hold. Not that the 55X won't do that. But everyone I have talked to with an STec say that they turn it off in Turbulence, and I never do with the TruTrak. It has many features that the 55x doesn't have. However, the weak part was the front panel, where the 55X has a great one, but the Sorcerer has made a big step forward. The servos are way superior and the inflight adjusting, just to name a few. I have even told my certified friends to leave there old STec AP installed and install the TruTrak to really use and leave the old one for compliance.

 

3)   Which trim systems do you recommend for the IVP.  I have heard about “Ray Allen” and “Precise Flight.”  Which do you recommend and why?

I have the Precise Flight indicator and I like it a lot. Don't know anything about RA. The PF has a switch to turn off a runaway trim situation.

 

4)  Would you choose Garmin SL 30’s or 40’s and why?

The SL 30 has a full Nav with ILS, where the 40 is just a com. Both have the excellent 8 watt Digital Signal transmitter, which is much stronger than the competition and uses less input, therefore less heat. (I think)

 

5)  Why would someone spend the extra bucks to go with a Chelton Pro system rather than the Chelton Sport system?

No need after they get the Pinpoint GADAHRS. I have the Pro with the Crossbow 500GA AHRS.

Attached is my humbly satisfyingly "Ideal" panel.

 

 

Thanks in advance and best regards,

 

John Hafen

801 836-4356

 
Jim Hergert
L4P, N6XE
(An Sexy)
403 hrs.
Image
N6XE Panel sized.jpg
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