Building my mill...

Kbeitz · September 20, 2017, 09:38:50 PM

Quote from: Hilltop366 on September 20, 2017, 09:12:28 PM
The area of the 1" cylinder is .79 sq inches and the 2" is 3.14 about 4 times as much.

I guess if you think about it you can almost get 4 one inch circles in a two inch circle.

So I should need around 575 psi...?

I had it up to 300-400 psi today and it felt good just pushing the blade
down with my hand...

Tomorrow I will put my stretch gauge on and see how close we are.

thanks.

Kbeitz · September 21, 2017, 12:13:34 AM

I was laying in bed thinking .... I'm wrong...
This cly was sold as a 2" bore 4" stroke....
But...
It has a 7/8" through bore....
That means the piston cant have a 2" face.
Back to the drawing board...
I'm thinking the 7/8" bore would have at least a 1/4"
side wall making the inside shaft.1-3/8.
So now i'm back to below a 1" piston surface.

Right ?

mad murdock · September 21, 2017, 12:22:32 AM

A cylinder will have the surface area of the diameter of the bore when pushing out, if it were a double acting cyl, then the reduced area of the turn stroke would be the bore diameter less the día of area of the día of the ram connected to the piston. Of course if you have a cylinder that has a ram on both ends then the latter would be true in both directions.

Kbeitz · September 21, 2017, 12:31:47 AM

Quote from: mad murdock on September 21, 2017, 12:22:32 AM
A cylinder will have the surface area of the diameter of the bore when pushing out, if it were a double acting cyl, then the reduced area of the turn stroke would be the bore diameter less the día of area of the día of the ram connected to the piston. Of course if you have a cylinder that has a ram on both ends then the latter would be true in both directions.

But what I have is non of those.
I bought a hollow cylinder with a 7/8" hole all the way through.
I just seen another thing. It's listed as 3-3/8 diameter.
That would mean the side wall got to be 11/16 inch thick.
So now I'm thinking the center wall should be the same.
So that should take my piston size down to 3/4"

mad murdock · September 21, 2017, 09:10:36 AM

SOunds like your figuring is correct then.

Kbeitz · September 21, 2017, 03:10:14 PM

what I started with...

What I ended with...

I'll tweak it from here...

DDW_OR · September 22, 2017, 02:39:44 AM

to bad there is not someone in your area with a "similar" mill you could try the tensiometer on.

Kbeitz · October 20, 2017, 07:19:57 PM

I hit 300 hours on the mill this week...
I just got back from an engine show in Bangor Pa.
They had a flea market and I found a big blade welder for $5o.00.
I can wait to try it out. I even got a coil of blade with it.

SineWave · October 21, 2017, 08:06:35 AM

Nice score!

Weren't you scarfing and silver soldering your blades...or was that someone else?

Kbeitz · October 21, 2017, 09:11:20 AM

Quote from: SineWave on October 21, 2017, 08:06:35 AM
Nice score!

Weren't you scarfing and silver soldering your blades...or was that someone else?

Yes I was doing the silver soldering. I have 3 wood shop bandsaws and 4 metal shop bandsaws
so this blade welder will come in real handy. About 2 years ago I got a whole truck load of
new Starret blades from the junkyard of different sizes. Now I can cut the bigger ones down
to fit my saws. I have spent the morning watching how to but weld band saw blades on U-tube.
I can't wait to give it a try. I looked up the price of my unit new on google. It sold for $2800.00.
Yesterday was better than some of my junkyard days. I got a new routor for $20.00 a new Car-hart
coat for $15.00. A new mikita sander for $5.00 A vise like I never seen before for #20.00. A vert. Reo
engine for $20.00 Two Dewalt 12" 80 tooth blades for $10.00 and a lot of other little things like
sand paper, drill bits, peg board hooks. cut-off wheels. wood clamps. etc....

JRWoodchuck · October 21, 2017, 02:13:05 PM

Got to love days like that!

Peter Drouin · October 21, 2017, 10:29:54 PM

Was it all in one box? :D :D

Kbeitz · October 22, 2017, 06:38:21 AM

Quote from: Peter Drouin on October 21, 2017, 10:29:54 PM
Was it all in one box? :D :D

Nope... One big flea market...

SineWave · October 24, 2017, 06:15:38 AM

Man, I've got a bad case of junkyard and flea-market ENVY!

dirtmotor · October 25, 2017, 03:26:41 PM

Wow , just finished reading this thread , only took me a week .
I am lucky to get a couple of hours a month to play with my little Oliver mill , your amazing in what you can do and how much you get done . Thanks for doing it and posting it where we can read and see it .

Kbeitz · October 25, 2017, 05:33:32 PM

There is always something to do for people that want to do it...

Thanks dirtmotor.

Peter Drouin · October 25, 2017, 07:24:13 PM

Quote from: Kbeitz on October 25, 2017, 05:33:32 PM
There is always something to do for people that want to do it...

That will keep ya young and tired. :D :D :D :D

Kwill · December 18, 2017, 12:31:44 AM

Quote from: Kbeitz on May 10, 2015, 11:03:51 PM
Today I got my new winch on and got the motor sitting about where I want it.

Did you have a trouble with the cables trying to lift one side up before the other? I'm having trouble with mine

Kbeitz · December 18, 2017, 01:01:44 AM

I did not have that problem. Maybe because I made the outer tubes long.

Kwill · December 18, 2017, 01:09:46 AM

I'm going to try going over the top like yours. Mine now is mounted on the top and goes down and across.

Kbeitz · December 18, 2017, 01:14:30 AM

Kwill · December 18, 2017, 09:22:55 PM

Thanks for posting the pics

Kwill · December 19, 2017, 12:16:40 PM

Hey do you think this would work for my raise and lower of the saw head? It's 1 1/4 ×7. I picked it up a few years ago at a auction. Got 2 6ft sticks of it for 2.00.

Kbeitz · December 19, 2017, 04:29:51 PM

I think it would work great if you could get a Coupling nut for it.
You could always get a machine shop to make you two.
I see one on E-bay right now and it's fine threaded but
it does not give the thread count.

KirkD · December 19, 2017, 07:14:50 PM

Quote from: Kbeitz on December 19, 2017, 04:29:51 PM
I think it would work great if you could get a Coupling nut for it.
You could always get a machine shop to make you two.
I see one on E-bay right now and it's fine threaded but
it does not give the thread count.

What, you don't have a bucket or two full of them? :D