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Homemade jack pad for pinch seams

jayemm

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Frustrated with scarcity of suitable jack points on newer cars, I made this jack pad from a piece of 4 x 2x 1/4 wall rectangular steel tubing from where I used to work. I had it cut to a 4" length and a 1/2" slot milled down the center to accept the pinch seam.
It has slowly evolved, kind of odd looking and is bound to get a few chuckles but it does work nicely and preserves the pinch seam. A few notes are as follows:


1) the pads that contact the underbody and the jack saddle are hard felt with adhesive backing. The bottom used to have coarse sandpaper glued to it to grip my jacks rubber saddle pad but since went to felt.

2) there is a rare earth magnet epoxied to the L bracket pop riveted adjacent to the slot. It holds the pad to the pinch seam while the jack is maneuvered underneath.

3) on my SUV it sits far under the rocker panel and I once forgot to remove it and drove around town for a day with the magnet still holding it on. Not wanting to lose it , or worse, having it come off at highway speed and bounce through somebody's windshield, I painted it bright yellow and added (harkening back to my old U.S. Navy aviation days) a red flag that hangs down to ground level. Pictures attached.
 

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PapasDaLife

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Great idea. Not at all going to bash the idea, but the very first thought I had when looking at it was I'd be afraid the top part, where the seam runs , one or both of those "wings" would collapse under weight.

I'm obviously no engineer , by my description, but just a concern from someone "looking in".

The ones I've seen online seemed to be a solid piece of metal with a slot or groove cut into them. But I have yet to see everything.


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jayemm

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Great idea. Not at all going to bash the idea, but the very first thought I had when looking at it was I'd be afraid the top part, where the seam runs , one or both of those "wings" would collapse under weight.

I'm obviously no engineer , by my description, but just a concern from someone "looking in".

The ones I've seen online seemed to be a solid piece of metal with a slot or groove cut into them. But I have yet to see everything.


Sent from my iPad using Tapatalk
Yes, I was curious to see if the "wings" would collapse but having used it a bunch over the last 10 years, they haven't collapsed at all. Now both of the vehicles it was used on weigh about 3600 lbs or so, nothing extremely heavy. One could, of course be made of heavier material or little plates welded on the sides to bridge the top and bottom or maybe holes drilled and tapped on the bottom face and threaded rod screwed in to support the top "wings".
 
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jayemm

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I don't get it I guess.....why aren't you lifting it right on the pinch weld?
The idea is to have the load on either side of the pinch weld so there is a broader area of contact as to not bend the thin edge. The area at the designated lift points (where the pinch seam is indented for a few inches along the seam) on the unibody are are "reinforced" for lifting.
 
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