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Tim Juhl
Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan
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 Posted: Thu Jan 31, 2008 4:46 pm Post subject: Cabin access step - 601XL |
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Just curious what others are doing about the tube that joins the two cabin access steps. Did you just slip it together and forget it or did you either weld the joint or put a bolt through it once you fitted the steps to the fuselage?
Seems to me that you'd get a little more strength out of a welded or bolted slip joint.
Tim
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CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Almost done! It'll fly in spring! |
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jeffrey_davidson(at)earth
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| Posted: Thu Jan 31, 2008 5:43 pm Post subject: Cabin access step - 601XL |
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Just curious what others are doing about the tube that joins the two cabin
access steps. Did you just slip it together and forget it or did you either
weld the joint or put a bolt through it once you fitted the steps to the
fuselage?
Tim,
Since this design differed from the design in my HD plans, I asked
Nick about it. He said they just slip together. That's all. The previous
design included two pieces of extruded L on the bottom of the fuselage in
the middle. The bare ends of the steps were riveted to the extruded pieces.
The "new" design is much simpler. I have used the steps a lot without even
considering how the meet in the middle for a while now.
Jeff Davidson
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dredmoody(at)cox.net
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| Posted: Thu Jan 31, 2008 6:28 pm Post subject: Cabin access step - 601XL |
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I think you'll find that when the tubes are slipped together and the step flanges are rivetted to the sides and longerons, further reinforcement is not needed. I just slipped them together.... no welding..... no bolts.
Dred
[quote] ---
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chris Sinfield
Joined: 28 Nov 2006
Posts: 270
Location: Sydney Australia
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| Posted: Thu Jan 31, 2008 9:49 pm Post subject: Re: Cabin access step - 601XL |
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Well I drilled and bolted the middle section AFTER I drilled and clicoed the sides. I then welded the center and covered the drilled hoes with weld. IT is strong and NO flexing. The other Zodiacs I have stood on all flexed a bit..
]Your choice you may not need it but boy it stiffened it up.
Chris
XL
Jab3300
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Tim Juhl
Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan
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| Posted: Fri Feb 01, 2008 7:54 am Post subject: Re: Cabin access step - 601XL |
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Thanks all... My question arose because when I had the unit clecoed in place I noticed that if I pulled down on one of the steps there was movement in the slip joint...
While I had it in place I drilled thru the tubes where they meet with a #40 and put a cleco in it so if I decide to drill I've got the proper position all locked in.
Thanks!
Tim
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CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Almost done! It'll fly in spring! |
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Tim Juhl
Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan
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larry(at)macsmachine.com
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| Posted: Fri Feb 01, 2008 9:17 am Post subject: Cabin access step - 601XL |
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Tim,
The tube on the HDS is welded and riveted to angles at the center.
You need secure connections to counter the load on the step in 3 directions.
http://www.macsmachine.com/images/fuselage/full/steptubassy.gif
http://www.macsmachine.com/images/fuselage/full/stepassy.gif
Quite stout for the material it's attached to.
Larry McFarland 601HDS
Tim Juhl wrote:
| Quote: |
Just curious what others are doing about the tube that joins the two cabin access steps. Did you just slip it together and forget it or did you either weld the joint or put a bolt through it once you fitted the steps to the fuselage?
Seems to me that you'd get a little more strength out of a welded or bolted slip joint.
Tim
--------
______________
CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Working on fuselage
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=161699#161699
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bryanmmartin
Joined: 10 Jan 2006
Posts: 1018
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| Posted: Fri Feb 01, 2008 3:06 pm Post subject: Cabin access step - 601XL |
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I had mine welded in the center.
| Quote: |
Just curious what others are doing about the tube that joins the two
cabin access steps. Did you just slip it together and forget it or
did you either weld the joint or put a bolt through it once you
fitted the steps to the fuselage?
|
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.
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Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive. |
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rgeese
Joined: 16 Aug 2006
Posts: 19
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| Posted: Fri Feb 01, 2008 6:52 pm Post subject: Re: Cabin access step - 601XL |
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I didn't particularly like the little bit of slop either, so I just drilled the joint in a couple of places longitudally (sp?) and put a couple of A5 rivets in. I also put a piece of leftover fuel tank cork between the tube and the bottom skin to eliminate the slight chance that the rivets will loosen up someday and the tube starts thumping on the bottom skin. The two rivets really tightened up the connection.
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