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Thanks Ed,
I had the same impression that Bob P. had that you were building a
bi-fold door. I was really looking hard for the cylinder on the near
side, and couldn't see it. After seeing the second photo and staring
at the first one a while, I think there is just a small section of it
showing and not quite where I expected it. It seems like the ram is
helping to support the door in a way that reduces the outward pull on
the top of the hanger.
I'm renting space in a homebuilt hanger. The homebuilt doors are
folding doors that don't quite open as easily as one would like. I may
see if I can talk him into building a new door similar to yours.
Bob W.
On Sun, 13 Aug 2006 14:13:11 -0400
"Ed Anderson" <eanderson@carolina.rr.com> wrote:
> Hi Bob,
>
> Thanks. No, the bar is actually the 12 foot long hydraulic ram extended to
> its full open position (6 feet retracted). I have a 3x2 metal tube acting
> as the frame tied into the front sheet metal. The front sheet metal acts as
> the web of a large "I" beam making it very stiff. To counter the tendency
> of the door to pull the top away from the hangar, I have 3 lengths of angle
> iron tied to the metal beam and then back 4 rows into the arch structure.
>
> However, I found that the very ends of the metal beam (where it attaches to
> the supporting posts) tends to torque a small amount when the door is fully
> open. So I will need to stiffen that area on each end of the beam - but, no
> major work required.
>
> The hydraulic pressure measures 450 psi when the door is fully extended.
> The system can put out 2500 psi and the rams (one on each end of the door)
> are capable of pushing with a combined force of 8,800 lbs with that
> pressure - so I do have a bit of margin {:>)
>
> Here is a photo from the other side where you can see the other cylinder as
> well as the hydraulic power pack on the floor under it.
>
> Ed
>
> ----- Original Message -----
> From: "Bob White" <rlwhite@comcast.net>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Sunday, August 13, 2006 1:46 PM
> Subject: [FlyRotary] Re: Emailing: DoorOpenLside.jpg
>
>
> > Hi Ed,
> >
> > Looks great.
> >
> > Is the bar on the far side a permanent part of the support? Did you
> > have to put any bracing behind the top front of the hanger to handle
> > the weight hanging out when the door is open?
> >
> > Bob W.
> >
> >
> >
> > On Sun, 13 Aug 2006 13:03:10 -0400
> > "Ed Anderson" <eanderson@carolina.rr.com> wrote:
> >
> >> Ok, folks.
> >>
> >> Here it is, the hangar door completely open. Minor sag at the junction
> >> of 2x4 on front-most edge and some torquing of metal beam at the ends
> >> where it meets the supporting post. Will stiffen with some plate and
> >> angle iron.
> >> Given no sheathing (yet) to stiffen the structure, I am very pleased with
> >> the results.
> >>
> >> If anyone wants more photos, send me an e mail
> >>
> >> Ed
> >>
> >>
> >> The message is ready to be sent with the following file or link
> >> attachments:
> >> DoorOpenLside.jpg
> >>
> >> Note: To protect against computer viruses, e-mail programs may prevent
> >> sending or receiving certain types of file attachments. Check your
> >> e-mail security settings to determine how attachments are handled.
> >
>
>
> --------------------------------------------------------------------------------
>
>
> > --
> > Homepage: http://www.flyrotary.com/
> > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
> >
>
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