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featherweight arena door jam?


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miles&Jules
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featherweight arena door jam?

So when the roof is on... the door was jammed so tight that we needed a hammer then a crowbar to open it. Should we just take an inch off the bottom and an inch off the top of the door. Then just cover the cracks with ali?

Do we need to beef up the hinges? Or will that not need to happen if the door has more room to move?

Better just do this especially if the arena is going to sydney.

Shocked
at the moment the bottom of the door has a 1cm
gap

[URL=http://s1091.photobucket.com/user/milesandjules/media/IMG_2245.jpg.html] [/URL]

and top door has a 5mm gap

[URL=http://s1091.photobucket.com/user/milesandjules/media/IMG_2246.jpg.html] [/URL]

and i found this massive hinge

[URL=http://s1091.photobucket.com/user/milesandjules/media/IMG_2244.jpg.html] [/URL]

probably overkill but i can gett em from the steel place here in ip..if we like them.
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Post Sat Jan 24, 2015 4:36 pm 
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Daniel
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that big hinge would allow the door to be lifted up?

Post Sat Jan 24, 2015 5:46 pm 
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Glen
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Absolutely cut an inch - if not more off the top and bottom then cover the gap with flat steel welded to the door frame Smile

You would weld one hinge the opposite way as well to constrain it ;p

Have a look at trailer rear door hinges. They are very huge and probably up to the task.
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Post Sat Jan 24, 2015 6:23 pm 
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miles&Jules
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Ok sounds good….yep that hinge can slide up and take the door off …would there be any benefit in that cause once the roof pushing down it would pinch the door frame regardless.
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Post Sat Jan 24, 2015 6:43 pm 
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marto
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Cut as much off as you think is suitable but we will need to seal it with some steel plate on the door so there is no gaps.
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Post Sat Jan 24, 2015 8:15 pm 
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Jaemus
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Good call on getting this sorted out. Jammed door always looks a bit unprofesh and to the more nervous spectator could seem outright dangerous in case of fire etc
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Post Sun Jan 25, 2015 3:26 pm 
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Daniel
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I know what went wrong with the door. The door frame had twisted, but not from the weight of the roof but rather from the bottom of the wall being kicked out in the centre of the wall and the roof beams pulling the top straight. The door frame took most of the stress due to it being allowed to flex more then the standard wall sections.
I'm will to bet that is why the door doesn't have problems when we set up with no roof and I reckon there would be less of an issue if we had the roof beams running parallel to the door rather than how we set it up with them perpendicular.
Let me set it up and test it next event before you cut.

Post Sun Jan 25, 2015 10:53 pm 
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miles&Jules
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That would be good…but we won't really know till we do a full roof setup with polly carb…which won't happen till nats …then its to late. Sad
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Post Mon Jan 26, 2015 2:14 am 
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seanet1310



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If Daniel is correct the polycarb should not be the major stresser as it is for the most part just sitting in place and screwed down. The stress comes from the very ridged trusses we run along the top of the arena combined with the bolted together (and it bowing out)

To get an idea if the theory is correct (sounds good to me) you could set up the roof Truss (no polycarb) our normal way and test the door. Then change it to running parallel to the door and test the door again. Before you move the truss get someone with steal caps or a robot and drive it into a few walls to bow them out as we see during events.

Would take a little bit of time (bring some silicone lube or similar so you don't spend ages fighting with the truss like we did at Nats) but should not take too long.

Downside is you need to set up the full arena size and my understanding is sometimes you go small for the backyard events.
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Post Mon Jan 26, 2015 8:55 am 
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marto
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I would still cut it down and beef up the hinges. It happens every time so more clearance is a good thing in my opinion.

Is there any negatives to the door having more clearance?

Steve
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Post Mon Jan 26, 2015 9:39 am 
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miles&Jules
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Another variable with setting up for a test...is the ground at Scott's may not be as straight as the gallery floor
Sad
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Post Mon Jan 26, 2015 10:04 am 
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Daniel
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quote:
Originally posted by marto:
I would still cut it down and beef up the hinges. It happens every time so more clearance is a good thing in my opinion.

Is there any negatives to the door having more clearance?

Steve


The problem is trying to fix a problem before you find out what is causing it.

I could test the problem without setting up the full arena

Post Mon Jan 26, 2015 5:17 pm 
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marto
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So we still have issues?
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Post Sat Jul 18, 2015 7:39 pm 
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miles&Jules
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it was pretty ggod at vivid….we should still bring a crow bar though.
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Post Sat Jul 18, 2015 11:59 pm 
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