Recent content by Stickyman

Sorry mate, safe work load. Safe Work Load. What dimensions would be needed for us to find out what the structure could if "X" amount was dropped from 750mm in its current set up? Also, what did think about the shock absorber in post 36?

http://www.yatesgear.com/climbing/screamer/

What about something like this? http://safetysling.thomasnet.com/item/gripper-mesh-slings/g-35-heavy-duty/4005

Thanks for the reply NVN. The plate I am referring to is a "weight plate", sorry, gym talk. A weight plate/disc is 450mm in diameter. I realize that the stiffer you make the frame, the higher the stresses become, that's why I was happy with the level of "bouncing" it did. Not so much that...

On second view, the barbell falls just over 1 plate width. The free fall would have been just over 450mm.

Wow, awesome replies guys, sorry I have missed them until now. I ended up making that brace but added a section above to connect them and hang the slings. These are welded straight to the frame as I did not have any flat bar suitable and the steel stores are closed for xmas. I got...

1. The tall uprights are bolted to a smaller ( 600mm) upright via 4 M16 8.8's. I will check the welds for those though, and the welds that hold the tabs that the bolts go through. 2. I did have the bar set on top on beer kegs, but that ended up being more dangerous. I did show that video...

I'm 100% the dimensions in post 20 are correct. I think the fact that it's only loaded in one side causes the frame to twist, there fore adding to the distance between 20kg barbell and 410kg barbell at static measurement. Here is a very poor sketch, all materials are 100x100x3 RHS or 75x10...

Mate, that is a perfect idea! I will build it tomrrow. I was thinking something like this, out of 100x100. Suggestions?

With a 20kg barbell in the sling, it's 772mm off the floor. With the barbell loaded to 410kg, it's 685mm

Hi nvn. Yes, the pivot arm is only secured on the right side the bottle jack makes the top move up and down for height adjustments. These are called monolifts, and are used in powerlifting competitions. All the monolifts I've ever seen are built this way, which is why I half copied...

I do mate, I do indeed. That's why I posted. I'll redo the bolts as per your recommendation, and thicken t1 and t2, whilst moving the clearance to .5mm. I'm also going to shorten lever arm ( yellow line) from 880mm to 600mm. Thanks for your help mate, much appreciated.

Awesome. Thank you very much. If it's not a huge trouble, can you give me a brief run down on the calcs?

I can close them up easy enough. Will it make the structure that much weaker as is? This whole thing has been made with a 5" grinder, drill press and a mig. I don't have top gear.

I can use what ever bolts I need to, but currently 8.8. The plates are all 10mm thick, and there is 8mm clearance gaps either side... A little to loose I know :(