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sleeve pincher

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I thought you were the kind of person that didn't discourage what others wanted to do? No I know you're trying to help me by saving a few sleeves. Thats not what I am making. I will try to make this clear. THE SCREWS WON'T TOUCH THE SLEEVE!!! The screws will push on pieces of steel that are conformed to ths shape of the sleeve. Its like pads that spread out the force. To go around the sleeve. I think it would work and I think you would too if you understood what I was making. Maybe not but I think I could make something work.
 
i discourage no one. i was just trying to help you from making a mistake. sorry if you misunderstood

maybe you should try to build what your thinking and snap a photo so its easier to understand. word are easily mixed up when typing but a photo is a beautiful thing.

good luck on your project
 
Yeah I figured you weren't discouraging me. Yeah its hard to understand but I will go try and make 'er and post a few pics.
 
I see what you mean, but even with the metal bits conforming to the sleeve, you'll still have minute differences in pressure on each side. Still, it's worth a shot :)
 
Yeah probably. Even a new sleeve has high spots and such that are removed during breakin... So yeah you probably won't have any problems.
 
Well i started my first fase of production. I made the outside ring. Now I just need to find some relatively small diameter yet 4 inch long screws. Thats gonna be tough. Nope, The ring that I thought was steel was something different and the threads don't hold. I will make one out of flat iron probably tonight.
 
Flandersander, i can appreciate what you are doing, making the tool to do the job at hand. My Grandfather was a shop teacher , and had a HUGE workshop in his basement ( milling machine, lathe, drill presses, the works!) and when he needed a tool or part, he would often just make it himself. I should have paid a LOT more attention to him when he was alive. I see what you are doing and it looks as though it might work.
 
Well I think it might work, kinda. For me personally, kinda is not good enough for my engines. My uncle owns a machine shop, and he spends hundreds of thousands of dollars on each machine that he has, just to make sure that his tolerances are right. When you send the sleeve off to be pinched my a true professional, they are going to pinch it to exact tolerances, and then check and recheck it, probably to the thousandth of an inch. What people are telling you is, even with the screws not contacting the metal, although it might not be visible to the human eye, you are not going to be able to get it exactly round.
 
this discussion has got me a little interested as I have a few sleeves that have nothing wrong with them other than loss of pinch.

What about pinching it in the jaws of a metal lathe chuck. They apply equal pressure and I could also find out the optimum temp to heat the sleeve up to first so it compresses with minimal effort. Might speak to physics professor buddy about this.

15663.jpeg
 
yeah I'm sure it would have to work. I would also get a steel ring the same diameter of the outside of the sleeve and cut into 4 pieces (or more likely 3 using a 3-jaw chuck = self-centering) to help spread out the load.

I'm fairly sure that when they mass produce these sleeves that a machine/cnc lathe must pump them out and the pinch is a quick one step process afterwards? Just guessing though. Does anyone actually know how they make them? or is that the secret.:bandit:
 

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