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riveteddragon(at)gmail.co
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 Posted: Fri May 30, 2014 7:13 pm Post subject: Delaying avionics choices |
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So I, as everyone else, have been convinced to delay avionics selection until the last minute, but this brings up a question-- I have to install autopilot servos (and possibly trim) before closing up the wings (I presume)-- is there some common servo interface and I can put whatever in, or do I have to select a brand, or what? Or do the servos install on the control rods in the fuselage, where one can easily retain access to them?
Steven DeFord
RivetedDragon(at)gmail.com
(925) 596-0426 (cell)
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flying-nut(at)cfl.rr.com
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| Posted: Fri May 30, 2014 7:35 pm Post subject: Delaying avionics choices |
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I decided to get my avionics early so I could plan on the wiring I would
need. I could have decided on an avionics package got the manuals and
done the wiring. Hobson's choice. Roll servo is far easier to install
in the wing before the last big panel is riveted in place. Pitch servo
is easy to get to at any time. If you decide on the vendor for your
avionics then you might buy the servos, install them, and purchase the
panel parts when you get to that point. Problem is .... you may decide
to change vendors and your servos end up on ebay. Installing the roll
servo can be accomplished after the wing is completed but will be a
PITA. The avionics I chose have seen upgrades but the units I purchased
far exceed the requirements for my mission anyway.
Linn
On 5/30/2014 11:13 PM, Steven DeFord wrote:
| Quote: |
So I, as everyone else, have been convinced to delay avionics selection until the last minute, but this brings up a question-- I have to install autopilot servos (and possibly trim) before closing up the wings (I presume)-- is there some common servo interface and I can put whatever in, or do I have to select a brand, or what? Or do the servos install on the control rods in the fuselage, where one can easily retain access to them?
Steven DeFord
RivetedDragon(at)gmail.com
(925) 596-0426 (cell)
-----
No virus found in this message.
Checked by AVG - www.avg.com
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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
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| Posted: Fri May 30, 2014 7:48 pm Post subject: Delaying avionics choices |
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Well, installing my Dynon roll servo in the completed wing was no big
deal. It goes right where there is an access plate and it is just a
matter of changing a few pieces of hardware, maybe drilling one hole IIRC.
Running the cable to the servo is easier before wing is closed up.
OTOH, there really isn't much reason to close the wing until you are
getting ready to mount the wings. Mine have been sitting in racks,
finished for more than a year.
On 5/30/2014 8:34 PM, Linn Walters wrote:
| Quote: |
I decided to get my avionics early so I could plan on the wiring I
would need. I could have decided on an avionics package got the
manuals and done the wiring. Hobson's choice. Roll servo is far
easier to install in the wing before the last big panel is riveted in
place. Pitch servo is easy to get to at any time. If you decide on
the vendor for your avionics then you might buy the servos, install
them, and purchase the panel parts when you get to that point.
Problem is .... you may decide to change vendors and your servos end
up on ebay. Installing the roll servo can be accomplished after the
wing is completed but will be a PITA. The avionics I chose have seen
upgrades but the units I purchased far exceed the requirements for my
mission anyway.
Linn
On 5/30/2014 11:13 PM, Steven DeFord wrote:
>
>
> So I, as everyone else, have been convinced to delay avionics
> selection until the last minute, but this brings up a question-- I
> have to install autopilot servos (and possibly trim) before closing
> up the wings (I presume)-- is there some common servo interface and I
> can put whatever in, or do I have to select a brand, or what? Or do
> the servos install on the control rods in the fuselage, where one can
> easily retain access to them?
>
> Steven DeFord
> RivetedDragon(at)gmail.com
> (925) 596-0426 (cell)
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
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Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
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Bob Turner
Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA
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| Posted: Fri May 30, 2014 9:44 pm Post subject: Re: Delaying avionics choices |
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Agree with Kelly, I put in Trio servos after the wing was closed, no big deal. I did run a bunch of wires prior to closing up the wings.
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Bob Turner
RV-10 QB |
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Mauledriver(at)nc.rr.com
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| Posted: Sat May 31, 2014 2:41 am Post subject: Delaying avionics choices |
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If you find yourself already leaning towards a brand, it may make sense
to make that brand commitment and put their servos in at the most
convenient point. The servos may well bridge the brand's next upgrades
or at least be fully compatible.
The servo stuff is sooooo good at this point, it's hard to imagine what
you might give up. But YMMV....
On 5/30/2014 11:13 PM, Steven DeFord wrote:
| Quote: |
So I, as everyone else, have been convinced to delay avionics selection until the last minute, but this brings up a question-- I have to install autopilot servos (and possibly trim) before closing up the wings (I presume)-- is there some common servo interface and I can put whatever in, or do I have to select a brand, or what? Or do the servos install on the control rods in the fuselage, where one can easily retain access to them?
Steven DeFord
RivetedDragon(at)gmail.com
(925) 596-0426 (cell)
|
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jesse(at)saintaviation.co
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| Posted: Sat May 31, 2014 4:33 am Post subject: Delaying avionics choices |
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Conduit in the wings is probably the best option. Servos and all wires can easily be added later. Don't corner yourself in too early. I know if a lot of cases where people change directions and end up selling their servos and buying different ones. That's hundreds of dollars down the tubes and they end up swapping servos out after things are closed up anyway. I have actually never once installed a servo before closing up a wing or attaching a tailcone. It's just not worth the risk of doing it early, IMHO.
Jesse Saint
I-TEC, Inc.
jesse(at)itecusa.org
www.itecusa.org
www.mavericklsa.com
C: 352-427-0285
O: 352-465-4545
F: 815-377-3694
Sent from my iPhone
| Quote: | On May 31, 2014, at 1:44 AM, "Bob Turner" <bobturner(at)alum.rpi.edu> wrote:
Agree with Kelly, I put in Trio servos after the wing was closed, no big deal. I did run a bunch of wires prior to closing up the wings.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=424092#424092
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jesse(at)saintaviation.co
Guest
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| Posted: Sat May 31, 2014 4:36 am Post subject: Delaying avionics choices |
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Aileron trim and autopilot servos can easily both be done with the wing closed up, and I have done them several times with the wings on and controls connected. Don't box yourself in. Just close up the wing (with wiring conduit installed) and move on.
Jesse Saint
I-TEC, Inc.
jesse(at)itecusa.org
www.itecusa.org
www.mavericklsa.com
C: 352-427-0285
O: 352-465-4545
F: 815-377-3694
Sent from my iPhone
| Quote: | On May 30, 2014, at 11:13 PM, Steven DeFord <riveteddragon(at)gmail.com> wrote:
So I, as everyone else, have been convinced to delay avionics selection until the last minute, but this brings up a question-- I have to install autopilot servos (and possibly trim) before closing up the wings (I presume)-- is there some common servo interface and I can put whatever in, or do I have to select a brand, or what? Or do the servos install on the control rods in the fuselage, where one can easily retain access to them?
Steven DeFord
RivetedDragon(at)gmail.com
(925) 596-0426 (cell)
|
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karolamy(at)roadrunner.co
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| Posted: Sat May 31, 2014 6:05 am Post subject: Delaying avionics choices |
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Regarding autopilot servos, I was going to go one way, waited, things changed over time and better options surfaced. I finished and riveted the wings all except the larger outboard lower wing skin, for later access. That being said, with the aforementioned skin available to remove, I did not remove it, nor did I need to to install the roll servo. So, if you feel compelled to close it up, go ahead. Like others said, just be sure some sort of conduit for the wire runs is in place. I figure about 12 hours of riveting for each wing skin still remains. Not a big deal in the life of the build for the ease of running final wiring to lights, AOA, pitot, or whatever you do. It doesn’t hurt to have the wings in the cradle with the underside facing outboard, so you can do your wiring, servos, pitot, landing lights, strobes, nav lights, AOA, etc with that skin off. Just cleco it in place to keep it out of the way and move on. Oh boy, you get to rivet some more later on! After all the fiberglass work, you’ll be ready to get back in the swing of things with that big bad gun! Again, either way can work, it's kinda your choice……...
Rich Hansen
RV-6A Sold
RV-10 final wiring, and just riveted fwd top fuse skin on AFTER doing absolutely everything possible on that panel and sub-panel! Boy am I glad!
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