Author Topic: MS461 Build Thread  (Read 1688 times)

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Offline Mastermind

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Re: MS461 Build Thread
« Reply #10 on: July 03, 2014, 12:45:51 pm »
Moving on.....







Damn that old tattoo gets uglier every year.









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Offline Mastermind

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Re: MS461 Build Thread
« Reply #11 on: July 03, 2014, 12:46:26 pm »
Here's that baffle/stuffer/do-hicky thing Tim and I were discussing. It don't bother me, so I don't bother it. :D



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Offline Mastermind

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Re: MS461 Build Thread
« Reply #12 on: July 03, 2014, 12:46:54 pm »
Now we begin to port it.

Mastermind Work Saws
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Re: MS461 Build Thread
« Reply #13 on: July 03, 2014, 12:47:45 pm »
Now to set up for the squish mod.....

I get a lot of questions about how this is done, so I'll spend some time here.

In this pics is a few of the plates I've made to mount various cylinder on.



This is the one that the 461 jug uses. The hole and divot are there to allow the stud and shroud boss to have clearance.



This is all there is to mounting the jug to the plate......simple really.



Then the plate is mounted in an independently adjustable four jaw chuck, on the lathe. That allows me to center the bore with the spindle.

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Re: MS461 Build Thread
« Reply #14 on: July 03, 2014, 12:48:36 pm »
Another view of the jug mounted.



Here I'm setup with a long reach indicator to check runout.





I made a couple of videos with more detail on the centering process.........if I post them y'all won't make fun of the way I talk will you?
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Re: MS461 Build Thread
« Reply #15 on: July 03, 2014, 12:49:25 pm »
I make pencil marks on the bed to go back to when I move the carriage.  Anything to make it easier.....





Here's a shot of indicating the bottom of the jug....



And how that is adjusted.

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Re: MS461 Build Thread
« Reply #16 on: July 03, 2014, 12:50:39 pm »


Mastermind Work Saws
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Re: MS461 Build Thread
« Reply #17 on: July 03, 2014, 12:51:35 pm »
Here's the boring bar setup I use.



Getting some spin on. :D





And one with flash......



Done. .040 gone from the quench area.....

[/URL
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Re: MS461 Build Thread
« Reply #18 on: July 03, 2014, 12:53:08 pm »


Getting ready to check squish. I've got a few rolls of .030" soft solder that I picked up on ebay awhile back, that's why I twist this stuff up like this. That and it's real handy to be able to make it any size I need. I should point out here that if your solder is too large it will give you a false reading.....



This bolt holds that flange/stuffer hicky, and it is higher than the case where the jug bolts down. If you try to delete the base gasket on the 461, you must grind the head of these two bolts down about .020".



We now have .065" squish clearance. We'll want to take .040" off the base to end up at .025.

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Re: MS461 Build Thread
« Reply #19 on: July 03, 2014, 12:53:47 pm »
Here's some of the mandrels I've made to fit different cylinders....



Here you can see that I've changed the chuck to a three jaw, and am using a UHMW mandrel to mount the jug in the lathe.



Sorry about the blurry picture. :(

I use an aluminum plate, with a small hole drilled thru it, between the live center and the top of the jug to allow me to bump the cylinder around when centering it in the lathe.



Then I set up the dial indicator to read the mandrel as close the the base of the jug as possible.



Bump....



Bump....til the runout is gone.



Now we are ready to turn the base.
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