@DPittman Good point! There are hydraulic valves which mount on cylinders to provide fail to safe conditions should a hose etc. fail, I can't recall what they're called right now. The basics are that with no pressure in any line, the valve blocks flow to and from the cylinder. To move the cylinder either way a positive pressure is required to release the valve.
Yes, one reason (of many) that as much as I would like to build the vertical bifold, I was stumbling on a brake system. Simplest would be a belay system but a solenoid on a brake shoe would be a fun project and not too difficult I don't think.
I had not seen that one. It would look funny on my rotten little hangar, but good conversation starter....Here's an interesting door I hadn't seen before:
Video: Higher Power Door
Pretty cool! (And could be a shop project - just to stay metalworking relevant!)
D
Makes sense. Looking more closely at the photos I took, I see that some improvements could be made to the center beam too. Luckily, I have 14 foot steel I beams that yearn for a purpose. This might be one. I am still getting acquainted with the project.Please take my comments as not entirely analytical but indicative without hitting the (code) books. Here is one example of something to compare to without doing any math.
At our flying club they have some Tee hangers in a continuous building and when they had a structural engineer look at it for insurance purposes they wound up replacing the engineered (wooden) truss over the (sliding) doors with I think a 22 inch steel I-beam.
At first I thought it looked excessive but I was assured that when you drill down into the building codes (legally not binding on an airport but your insurer may insist anyway) the strength is needed for things like snow load and maximum deflection. The company that made your truss may be able to give you a load rating/application sheet that would give some useful data too.
In the end, you pays yer money & takes yer chances but your desire to learn a bit is a good way to stack the deck in your favor.
D
Sorry for taking so long to answer this @YotaBota O-360
.
I now understand this postAbout 180hp depending on tuning. That machine is gonna drill some fancy holes in the sky
"To go up,,,,pull back on the stick,,,,, To go down,,,,,,pull back more,,,WAHOOOOOO"
Aaahhh!
) I winched the lower part of the door to an upper ceiling rafter and that seemed to hold the wall in. The west wall plate was not as bad but I found one tie under it was very rotten and the one under that one was solid, but very misaligned. Probably doing a few little things when this structure was built might have gone a long way in a better structure today, but it is what it is. It has been an interesting project. I have yet to finalize my door design but going with bifolds. Not sure how many panels per side yet. 4 make a nice number, easily supported but 5' wide doors. 5 make nice 4x8 panels that play nice with a 4x8 sheet of plywood, but one end will not be supported by the track unless I come up with a quick release gadget. As mentioned above, smaller doors put less strain on the hinges. Or toying with 4 panels on one side and 6 on the other. My OCD struggles with that but it is practical. Fully supported doors that result in the same opening. Just the part is not centered in the middle. For this little plane, the doors do not need to be fully opened anyways but still, ...
lol....
