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> Cart Done TOPIC CHANGE - Is my shell twisted?, New pics within.
snflupigus
post Nov 11 2006, 04:23 PM
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QUOTE(SirAndy @ Nov 11 2006, 12:49 PM) *

QUOTE(snflupigus @ Nov 11 2006, 12:53 AM) *

NOTICE the passenger is off the wood by an inch or so...


yupp, looks tweaked ... did you install the body kit? if not, one of the most common reasons people install a FG body kit is that they have insurance money to spent after the car was hit in an accident ... ask me how i know ...
(IMG:style_emoticons/default/icon8.gif)


good news, nothing a celette can't fix. bad news, that won't be cheap ...
(IMG:style_emoticons/default/smash.gif) Andy


I bought the car as is, it doesnt look like it was hit anywhere else... but who knows. Its only off from flat by about 3/4. I will get out the level, maybe its the garage floor and the cart is flexing to follow.?

QUOTE(nebreitling @ Nov 11 2006, 01:36 PM) *

does look a little 'off'. how does it compare in measurements?

http://www.914world.com/specs/bodydims.php?...5e8c2a26a20e538

http://www.914world.com/specs/underdims.php...5e8c2a26a20e538


btw, i would have really built that cart out of rectangular steel tubing...


I cant weld and I think wood is cheaper than steel isnt it?

QUOTE(Marty Yeoman @ Nov 11 2006, 02:05 PM) *

QUOTE(snflupigus @ Nov 8 2006, 10:47 PM) *

Can somebody take my autocad file and do an computer structural analysis on it?
ACAD FILE


Material: Douglas Fir
Modulus of Elasticity: 1950ksi
Tensile strength (ultimate): 340psi
500lb loads at each top corner on 3.0in dia area (102psi)
Area moveable support at each bottom corner over caster mount plate area.

It looks like you're barely stressing the thing.


THANK YOU!!! That is what I suspected, now its confirmed. I apreciate you putting that into your system for me.
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Hammy
post Nov 11 2006, 05:05 PM
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How'd you get it up there?
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snflupigus
post Nov 11 2006, 05:20 PM
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10 inch 2x4s laid flat and screwed together in a square overlapping tower (2 in each level - five rows high) to put underneith my jackstands lifting them 7.5 inches higher under the rear control arms. The front rested 17inches high on 2 jackstands while i alternated left to right at the rear to get the stands high enough for the rear donuts to be 24 inches up.

Then i screwed another few 2x4s together to lift the under the front crossbar to get the front dounts high enough with my jack so that i could slide the cart underneith it.

I worked very slowly and carefully. It would have been smarter to remove the suspension while it was only on the jackstands and lower to the ground.

I'm not sure 4 guys could lift this car 7 extra inches. Not with fiberglass fenders which cant be used to lift from.

I'll invite all you az guys over when i start putting it back together (IMG:style_emoticons/default/smile.gif) --- unless you all want to help start sanding it down. (IMG:style_emoticons/default/smile.gif)
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snflupigus
post Nov 14 2006, 11:04 PM
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a little closer look at my "twist" --- probably not actually twisted.

Looks like once upon a time a PO jacked the car up in the wrong spot and bent in the floor and tilted the donut up and in with it. I now remember last year when i was stripping the floor that it was not flat... but previously I had assumed that the curve in the floor was stock. (IMG:style_emoticons/default/unsure.gif) (yup, sometimes I'm not the sharpest knife)

(IMG:http://www.snflupigus.com/pics/914floor.jpg)
(IMG:http://www.snflupigus.com/pics/914donut.jpg)

also, a few more pics of the car up.
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drive-ability
post Nov 14 2006, 11:17 PM
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Hey, that sounds like good news! (IMG:style_emoticons/default/beerchug.gif)
We do so much to our cars how can you expect to remember every detail.
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snflupigus
post Nov 14 2006, 11:23 PM
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anybody want to give their opinion on the best approach for straightening that back out and down?

big peice of wood and sledge? (IMG:style_emoticons/default/smile.gif)
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jd74914
post Nov 14 2006, 11:29 PM
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Yes. Thats exactly what I would do. I might even try without the wood and with a slightly smaller rubber coated hammer.
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TravisNeff
post Nov 14 2006, 11:39 PM
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Go to harbor frieght and pickup a dead blow hammer. it is a rubber hammer that has a bunch of lead shot in it. Use that on your floor and that should get you back where you need to be. You will probably have to shrink the metal where it stretched -but the hammer technique might get you close enough.
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rick 918-S
post Nov 14 2006, 11:58 PM
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Hey nice rack! -Celette
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use a 2"x 6" block on the floor. hit the block with the dead blow. You'll move more area and have a better chance at flattening the floor.
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Chris Pincetich
post Nov 15 2006, 12:45 AM
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WOW Marty that is cool! Now how would that design hold up to a NorCal 6.5 - 7.0 earthquake? (IMG:style_emoticons/default/biggrin.gif) Major progress! I am guilty of being an armchair critic, I think that cart is going to be fine. Did you *search* for the SirAndy thread where his car is put on the torture rack? Very cool pics. Good luck (IMG:style_emoticons/default/smash.gif)
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snflupigus
post Nov 15 2006, 01:10 AM
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QUOTE(ChrisNPDrider @ Nov 14 2006, 11:45 PM) *

WOW Marty that is cool! Now how would that design hold up to a NorCal 6.5 - 7.0 earthquake? (IMG:style_emoticons/default/biggrin.gif) Major progress! I am guilty of being an armchair critic, I think that cart is going to be fine. Did you *search* for the SirAndy thread where his car is put on the torture rack? Very cool pics. Good luck (IMG:style_emoticons/default/smash.gif)


yup, saw the majorly twisted teener... his license plate should say TWISTED!

The cart is fine, its the castors I shouldnt have tried to save $ on. Should have got the 4 or 5 inchers instead of the 3" ers. Ill probably throw 2 more 2x4s on the bottom and then get bigger castors. anything over 3" wont mount on a 2x4.

Thanks all you guys for your help and criticism;)
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fin
post Nov 16 2006, 06:16 PM
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A note to remember when building jigs like this or putting a new beam in the basement to replace a sagging floor.

Strength is increased with height. For solid objects, base times the height cubed. so for a 2x4 flat is 1.5^3 times 3.5 = 11.8125. On edge, 3.5^3 times 1.5 = 64.3125.

So on edge a 2x4 is 5.444 times stronger than it is lying flat. I know that someone will check my math. It's stronger, you know it is.

Gussets and adhesives will stiffen and add safety. Plywood on the faces where access is not needed will really make it strong.

Just don't add drawers, entertainment center, mp3 features or you will never get it off of the stand.......

Cheers,

Fin
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