jjessen
Joined: 22 Apr 2006
Posts: 285
Location: OR
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 Posted: Wed Nov 08, 2006 9:48 am Post subject: Before closing up the top of the TailconeBefore closing up |
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Well, one thing for sure, it all depends on which glass unit you decide on. Rob's 3500 has the AHRS in the unit. The Chelton's have both remote, with some placing the magnetometer in the wing, the AHRS in various locations. Etc Etc. I'm not quite settled on the panel, and not quite settled on air conditioning, or a hat shelf, so will place a "shelf" aft of the F-1007, just in case, to hold whatever, or nothing. I almost agree to wait for the top skinning, but then you have a major component not done. Others have closed it up, made their decisions, crawled around in amazing contorted positions to install, and are doing nicely flying from coast to coast. So.... I'll compromise and move on. I've been on this tailcone for an eternity and would like to get off of it.
John Jessen
#40328
do not archive
[quote] From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Bill DeRouchey
Sent: Wednesday, November 08, 2006 8:46 AM
To: rv10-list(at)matronics.com
Subject: Re: Before closing up the top of the TailconeBefore closing up the top of the Tailcone
My recommendation is to not button down the top three tail skins until everything else is completed on the entire aircraft. You can start and even perform slow taxi tests with these skins off. If you are going to install a remote magnetometer or AHRS you can swing the compass and relocate the unit as needed. Keep all clecos away from the AHRS as they are iron based.
I have constructed a simple shelf aftmost between the main fuselage longeron and the elevator trim servo mechanism. My first AHRS in installed in that location was affected by the trim servo motor (not running). I scrapped this AHRS for other reasons and now tasked to locate the Cross-bow properly.
You can not locate the AHRS just behind the baggage bulkhead no matter how high it is installed above the floor. Variable magnetic fields from the baggage will affect your heading information in uncontrollable ways.
The Cross-bow has a good hard iron calibration routine so my next approach will be to locate it far aft and calibrate the magnetic interferrence from the trim servo motor out of the heading. With this approach there is only one source of interferrence.
My suggestion is to delay installation of the three top skins to the very end. I will report back after I am satisfied with my AHRS installation.
Bill DeRouchey
billderou(at)yahoo.com (billderou(at)yahoo.com)
N939SB, flying with a few pit stops
Chris <toaster73(at)earthlink.net> wrote:
[quote]--> RV10-List message posted by: "Chris"
I'd consider the ability to keep it water tight as well.
One other way of thinking about these considerations is just to not bother
planning ahead. Just finish the airframe and then install the various
pieces of gear. then you will be sure that it can be serviced later and you
will have figured out the best way to contort yourself to get at it for the
future maintenance.
-Chris Lucas
#40072 (cabin side skins)
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