jjessen
Joined: 22 Apr 2006
Posts: 285
Location: OR
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 Posted: Sat Nov 11, 2006 9:00 am Post subject: Before closing up the top of the TailconeBefore closing up |
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Update:
Last night I put in two pieces of angle running across from one side to the other between the F-1007 and the F-1008 in the tailcone (see picture). It took a couple of hours to figure out where I wanted it, cut some angle that was extra, get it to the right shape, drill the holes and so on. It took another couple hours thinking about it, talking about it, etc. All for 2 angles that may, just may be used to hold a magnetometer or some such thing. I can't imagine what some of the more complex mods are costing folks in terms of build time!
However, do this before putting on the top skin of the tailcone, should you even remotely consider hanging an AHRS or some other electronic marvel back there. Worth doing. I'm also going to put in extra wires for the rudder trim, for the camera in the VS fairing, and for the two lights in the HS that I turn on when on long final to light up my tail art.
Finally, at someone's suggestion posted on this list, I downloaded the MS PowerToy to resize pictures. I use Irfanview to make the photo albums for my website, but for quick and easy, my goodness, get the resize powertoy. Well worth the couple minutes to download and install. Just right click any photo you're viewing and select the size and you're done. One of the better tools.
John Jessen
#40328 (Hey, Bruce, thanks for the jigs. Just noticed them last night)
[quote] From: John Jessen [mailto:jjessen(at)rcn.com]
Sent: Wednesday, November 08, 2006 9:48 AM
To: 'rv10-list(at)matronics.com'
Subject: RE: Before closing up the top of the TailconeBefore closing up the top of the Tailcone
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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