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  #1126 (permalink)  
Old 04-06-2019, 03:26 PM
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I don't understand how the lid is weakened. After the skin is on, if it's tacked all around, the lid should be as stiff as a piece of glass.

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  #1127 (permalink)  
Old 04-06-2019, 03:55 PM
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By comparison to the original design with upright flanges all around, you don't think theres a loss of stiffness? Before taking the skin off, it took all the strength and weight of two men to just barely twist the lid. I'm fairly certain that if not reinforced with twist in mind, I could stand behind the car and grab the open, revised lid by the corners and flex the crap out of it. Thats only really a thing if the part where the hinges are can twist. If it can't, I don't foresee a problem.
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  #1128 (permalink)  
Old 04-06-2019, 06:27 PM
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When joining two panels of sheet metal together, if it's not just a slip fit into a folded over seam, and welded as mentioned, it should be strong.


I see the original inner panel still has about an inch thickness.


If you want to test the theory, take two straps of metal and cross corner to corner and tack them in place. Small tacks. Tack them together where they cross each other and then lift the lid from one corner.
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  #1129 (permalink)  
Old 04-06-2019, 07:09 PM
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I can buy all that and yeah, maybe on the inch high part. But remember, now the panel's weight is supported by small rectangles which are on the raised flat area, and with three big holes in between.

Do you think also that putting a minimal solid link between hinges, in a hidden area near the pivot point, would be a wasteful addition?

You see, the two sections of the lid shell where the hinges currently mount are not exactly at the same angle. Can I change that easily with a little bending to synchronize them? Sure. Thats my point. As far as I know, it could end up with a lift strut on one side. I want to execute trunk gaps once, not marry into a lifetime of hey can you readjusts because the wind blew at the show.
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  #1130 (permalink)  
Old 04-06-2019, 07:23 PM
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That kinda had a huffy tone when reading. Wasn't meant that way, more of a cynical tone perhaps. I guess whats going on is the VERY next thing I gotta do is button that lid up. If everybody else thinks I am urinating against the prevailing airflow... that just makes my job easier. For now. But that thing is bad flimsy, I'm tellin' ya. I know I can take a tacked camaro decklid and tweak the bejeepers out of it and I don't want one single remaining bejeeper left in this to burn me later. because if it tweaks in the wind for example, bam, paint damage when closed. With me to blame and to fix for free. Just no sir

But my mind is open.
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  #1131 (permalink)  
Old 04-06-2019, 09:22 PM
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Add some sheet metal channels that weld to inner lid and to steel plates.
Try two quick strips as I mentioned. It'll take you ten minutes maybe.

One hinge will follow the other, not hold the deck lid down as the other side opens. Unless they're like hood hinges with a tight built in spring.



And your tone is always fine, no worries. I'm quite blunt myself. Leave out the frill talk and state what you think is plenty good to get right to the point.
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  #1132 (permalink)  
Old 04-06-2019, 09:32 PM
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  #1133 (permalink)  
Old 04-06-2019, 09:49 PM
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When I built the inner structure for the roaster, I was concerned about how flexible it was but just as soon as the skin was welded it became extremely rigid.

I think you will e fine as long as you don't let it get in a twist when welding it.

John

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  #1134 (permalink)  
Old 04-07-2019, 11:15 AM
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Pugsy, I wasn't wanting anything that complex and certainly nothing that doesn't go between plates, and sheetmetal would not be strong enough anyway. My point is just invalid. Thats OK.

Imagine a Ram 3500 pulling four tons with five passengers getting suprised by the line of street rods stacked halfway up the off ramp... screeeeeWHAM and it hits the A above the frame, still going 45 or so and sliding at an angle.

If hush and ignore is still the right choice when the distressed family shows a lawyer the pic of the trunk lid laying 20 yards away, so be it.
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  #1135 (permalink)  
Old 04-07-2019, 01:18 PM
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As a follow up because I posted a pic but never said the result... the '17 Altima with 16K miles I recently showed was a total loss. I had suggested that we not even tear it down so was pleased that my crash instinct was still valid in that case.

I sure hope the Model A would take that hit better than the Nissan did.
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  #1136 (permalink)  
Old 04-07-2019, 03:54 PM
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Pugsy, I gotta tell you that frill talk comment mashed a button. The frill is this thread being here for all of you.
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  #1137 (permalink)  
Old 04-07-2019, 04:06 PM
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Quote:
Originally Posted by John long View Post
When I built the inner structure for the roaster, I was concerned about how flexible it was but just as soon as the skin was welded it became extremely rigid.

I think you will e fine as long as you don't let it get in a twist when welding it.

John

Hi, John. I see that your shell has tall upright edges, my project does not. The skin will be folded over the edge of the shell and tacked. Do you feel that makes a difference in resistance to twisting?
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  #1138 (permalink)  
Old 04-08-2019, 12:29 PM
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crickets, woohoo





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  #1139 (permalink)  
Old 04-08-2019, 06:30 PM
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Quite a bit of touch up welding was needed on that, expectedly due to the gap. Here it is again-



These show those gaps and the slices made before flattening the contours-



You can also see my quick way of making squarish patches for round holes-



Lost some A time to looking at the grey Bronco, it fell off a twin post lift. Then at the estimate afterward. Thats three square Broncos in the house and I think the big green one is gone now. Better have your Wranglers on up there.



Gave it heck to finish but ran out of .030 wire on the home stretch. Snagged the .035 rig and zapped up what I had open which is what you just saw. Theres that flat spot near the hinge pad yet, and this other rumble handle area-

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  #1140 (permalink)  
Old 04-08-2019, 07:57 PM
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Quote:
Originally Posted by idrivejunk View Post
Hi, John. I see that your shell has tall upright edges, my project does not. The skin will be folded over the edge of the shell and tacked. Do you feel that makes a difference in resistance to twisting?

i don't think it will, all that much Matt. Yours is still going to form a "box" after it is welded. My skin is crimped over on a vertical plain instead if a horizontal plain like the A model. To complete the inner structure, I made U shaped pieces that joined to the inner skin. They rolled around and provided the flange for the outer skin to crimp over. It is possible that the '36 may be a little more rigid but I really expect yours to be very acceptable. Mine has no flex at all.

John



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