jack stands
Easy that is what I use, so what is your peoblem?
Again, how do you know what jack stands the original poster uses? He hasn't actually said, we have no idea what kind of stands they are or what their rating is supposed to be. The picture is one
I posted as an example, not necessarily what the OP has. So, you're just assuming he uses the same stands as you do, which is what I was trying to point out to begin with. He didn't say what stands he has, so, none of us can really know what will work for him. Especially not to the exact dimensions you posted.
In my youth I had the ones like you pictured.Lost the pin on one of them....Stuck a screw driver in it and used them for years before I could afford the good ones. Never had a problem...was I lucky? ...Probably.
Yeah, I've used stands like the one's I posted as well, with crappy bolts inserted for pins before I knew better. I've also seen those stands collapse. So, yeah, I
know I was lucky, and that's why I'd never use a stand like that again. Or recommend anyone else does either, regardless of the pin strength.
Once again, this is assuming a 3/8" bolt will fit. I've seen stands like the one I posted that used 1/4" pins, not 3/8". But we have no idea what will fit the stands the OP has or what their load rating is (or is supposed to be). You're right though, many sizes of grade 8 bolts will have a shear strength that will be more than enough to support a corner of a car in double shear, if that's the only concern.
But slip with a jack and drop same car 1” and the calculations go out the window. The safety margin needs to be there.
Exactly!
The car is a 65 Barracuda that weights around 3000lb. The most any stand will need to carry is 700 to 900lbs. You might be over thinking the situation
I just gave the only recommendation that any one can give based on the information you gave. At minimum you need a pin that has enough shear strength to support the load, plus a significant margin of safety if you're smart. You
should be trying to match the rating on the jack stands, so if they're 3 ton stands that means you need a pin with a shear of 6,000 lbs if you want the rating to stay the same. I never said a bolt wouldn't work, but you should know the ballpark shear strength of whatever it is you put in there, because your life might depend on it.
Do whatever you want, you're the one that will be under it. All I'm saying is that you should think a little about the consequences before you just slap some random pin in there. And if you're really using those 3 legged sheetmetal stands, well, good luck.
