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zsmith3rd(at)earthlink.ne
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 Posted: Thu Mar 29, 2007 11:16 am Post subject: Panel thickness |
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do not archive
Obviously most agree that .025 is too flimsy.
If you use .063 material for the panel and a couple of vertical stiffeners behnd the panel between instruments it'll be okay.
I used half-by-half aluminum angle (1/8" thickness) riveted with A5s from the front. Looks okay.
There were a couple of places where the angle is cut out a bit to clear instruments. The verticals are mounted about 1/3 distance from each side, instrument size and layout dictating actual brace location. The instrument holes were punched with appropriately-sized Greenlee punches. Put the big half of the punch on the back side for this, otherwise you'll have tool marks on the front that even crackle paint may not hide.
Bent the bottom flange 2" in a brake, cut the top edge rounded per plans, then had a professional welder TIG a 2-inch-wide strip of .063 across the top. The wider flange & top shouldn't interfere with other items but does add some resistance to wayward knees at the bottom.
With the holes cut and vertical braces in place there was no flexing. Once mounted in the airframe it is solid and instruments don't sag from their own weight.
If I had it to do again I might build a "frame" only and mount it, then make the flat panel with stiffeners to attach to the frame with Cam Locks or a hinge or chewing gum or something. Attachment points would eat up some panel space.
Regards to all,
Zed/701/912/BR549/etc
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Gig Giacona
Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA
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| Posted: Thu Mar 29, 2007 12:06 pm Post subject: Re: Panel thickness |
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Obviously most agree that .025 is too flimsy.
If you use .063 material for the panel and a couple of vertical stiffeners behnd the panel between instruments it'll be okay.
I used half-by-half aluminum angle (1/8" thickness) riveted with A5s from the front. Looks okay.
There were a couple of places where the angle is cut out a bit to clear instruments. The verticals are mounted about 1/3 distance from each side, instrument size and layout dictating actual brace location. The instrument holes were punched with appropriately-sized Greenlee punches. Put the big half of the punch on the back side for this, otherwise you'll have tool marks on the front that even crackle paint may not hide.
Bent the bottom flange 2" in a brake, cut the top edge rounded per plans, then had a professional welder TIG a 2-inch-wide strip of .063 across the top. The wider flange & top shouldn't interfere with other items but does add some resistance to wayward knees at the bottom.
With the holes cut and vertical braces in place there was no flexing. Once mounted in the airframe it is solid and instruments don't sag from their own weight.
If I had it to do again I might build a "frame" only and mount it, then make the flat panel with stiffeners to attach to the frame with Cam Locks or a hinge or chewing gum or something. Attachment points would eat up some panel space.
Regards to all,
Zed/701/912/BR549/etc
Why in God's name would you not want that archived? You don't have to answer it is now.
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_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR |
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pmaxpmax(at)HOTMAIL.COM
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| Posted: Thu Mar 29, 2007 12:29 pm Post subject: Panel thickness |
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I'm using the stock, standard, kit-supplied instrument panel. All my instruments are just hanging out the back. My Transponder and COM Radio are about 6 inches long, so they are braced in the back. Other than that, I haven't had any problems.
I've been flying for about 120 hours now. It sure is easy to over think things when you're building. Just cut holes in the stock panel, get finished early and go flying.
Phil Maxson
601XL/Corvair
Northwest New Jersey
> Subject: Re: Panel thickness
| Quote: | From: wr.giacona(at)suddenlink.net
Date: Thu, 29 Mar 2007 13:06:50 -0700
To: zenith-list(at)matronics.com
--> Zenith-List message posted by: "Gig Giacona" <wr.giacona(at)suddenlink.net>
Obviously most agree that .025 is too flimsy.
If you use .063 material for the panel and a couple of vertical stiffeners behnd the panel between instruments it'll be okay.
I used half-by-half aluminum angle (1/8" thickness) riveted with A5s from the front. Looks okay.
There were a couple of places where the angle is cut out a bit to clear instruments. The verticals are mounted about 1/3 distance from each side, instrument size and layout dictating actual brace location. The instrument holes were punched with appropriately-sized Greenlee punches. Put the big half of the punch on the back side for this, otherwise you'll have tool marks on the front that even crackle paint may not hide.
Bent the bottom flange 2" in a brake, cut the top edge rounded per plans, then had a professional welder TIG a 2-inch-wide strip of .063 across the top. The wider flange & top shouldn't interfere with other items but does add some resistance to wayward knees at the bottom.
With the holes cut and vertical braces in place there was no flexing. Once mounted in the airframe it is solid and instruments don't sag from their own weight.
If I had it to do again I might build a "frame" only and mount it, then make the flat panel with stiffeners to attach to the frame with Cam Locks or a hinge or chewing gum or something. Attachment points would eat up some panel space.
Regards to all,
Zed/701/912/BR549/etc
Why in God's name would you not want that archived? You don't have to answer it is now.
--------
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103733#103733
>==========
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It’s tax season, make sure to follow these few simple tips Check it out! [quote][b]
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OK2AV8(at)aol.com
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| Posted: Thu Mar 29, 2007 6:11 pm Post subject: Panel thickness |
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I'm with Phil. Stock, standard, kit supplied with all electric 6-pack. No problems so far. The factory demonstrator has the same with more than 1000 hours. Chris Heintz designs light. You (the manufacturer/owner/maintainer) can chose to add weight.
Tim Garrett
601XL/Jabiru 3300
St. Louis
flyingwithms.com
See what's free at AOL.com.
[quote][b]
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n4546v(at)mindspring.com
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| Posted: Thu Mar 29, 2007 7:17 pm Post subject: Panel thickness |
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Be cautious adding weight, I have never attended a "happy" weighing. Most homebuilts come in overweight. If you wind up adding more than estimated weight, you may choose to use the attached VSI.
Regards,
Randy L. Thwing, Las Vegas do not archive
EAA B-17 "Aluminum Overcast" arrived at VGT (North Las Vegas Air Terminal) today, our EAA Chapter 163 will be working with them all weekend, neat looking big bird!
Chris Heintz designs light. You (the manufacturer/owner/maintainer) can chose to add weight.
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tonyplane(at)bellsouth.ne
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| Posted: Fri Mar 30, 2007 5:06 am Post subject: Panel thickness |
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I also did it the way Mr. Maxon did it. No problems.
Tony Graziano
XL; N493TG; 222 hrs
--
Time: 01:29:08 PM PST US
From: Phil Maxson <pmaxpmax(at)HOTMAIL.COM>
Subject: RE: Re: Panel thickness
I'm using the stock, standard, kit-supplied instrument panel. All my instr
uments are just hanging out the back. My Transponder and COM Radio are abo
ut 6 inches long, so they are braced in the back. Other than that, I haven
't had any problems.
I've been flying for about 120 hours now. It sure is easy to over think th
ings when you're building. Just cut holes in the stock panel, get finished
early and go flying.Phil Maxson
601XL/Corvair
Northwest New Jersey
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ashontz
Joined: 27 Dec 2006
Posts: 723
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| Posted: Wed Apr 04, 2007 7:22 am Post subject: Re: Panel thickness |
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| Gig Giacona wrote: | Obviously most agree that .025 is too flimsy.
If you use .063 material for the panel and a couple of vertical stiffeners behnd the panel between instruments it'll be okay.
I used half-by-half aluminum angle (1/8" thickness) riveted with A5s from the front. Looks okay.
There were a couple of places where the angle is cut out a bit to clear instruments. The verticals are mounted about 1/3 distance from each side, instrument size and layout dictating actual brace location. The instrument holes were punched with appropriately-sized Greenlee punches. Put the big half of the punch on the back side for this, otherwise you'll have tool marks on the front that even crackle paint may not hide.
Bent the bottom flange 2" in a brake, cut the top edge rounded per plans, then had a professional welder TIG a 2-inch-wide strip of .063 across the top. The wider flange & top shouldn't interfere with other items but does add some resistance to wayward knees at the bottom.
With the holes cut and vertical braces in place there was no flexing. Once mounted in the airframe it is solid and instruments don't sag from their own weight.
If I had it to do again I might build a "frame" only and mount it, then make the flat panel with stiffeners to attach to the frame with Cam Locks or a hinge or chewing gum or something. Attachment points would eat up some panel space.
Regards to all,
Zed/701/912/BR549/etc
Why in God's name would you not want that archived? You don't have to answer it is now. |
I thought about that too. Seems like a good idea to be able to pull the entire panel out if need be, kind of like the old Navy and NASA rocket launch panels you'd see the Apollo launch personell holding onto those hand grips while fretting over Apollo 13. Those weren't 'oh shit' bars, they were there so that a technician could undo a few screws and pull the whole panel out for service. Seems like a nice feature to have in a small plane instead of hanging upside down trying to do wiring and whatnot.
do not archive
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