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Chatterbox / Easily Distracted ?
« Last post by Doc on Today at 12:45:31 AM »
Well got the garden tilled the back yard mowed snow blower taken off tractor. Then I got distracted haha



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Vehicles & Models / Re: Steam Tractor 3/4" (Rudy K)
« Last post by zeeprogrammer on Today at 12:14:07 AM »
I canít believe its been FIVE months since I had any updates to my steam tractor!  The forum gave me an "Old Thread" warning when I posted this!  I had no idea it was going to be SOO long!

While I havenít had a ton of shop time, what little I had has been spent making the new mill feel at home, re-organizing my shop, and just generally improving things in my little hide-away.

Excuses excuses.  ;D
Good excuses!
But excuses.  ;D

P.S. I'm not one to talk.

Glad you're back to this.  :ThumbsUp:
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Vehicles & Models / Re: Steam Tractor 3/4" (Rudy K)
« Last post by Dave Otto on Today at 12:00:05 AM »
Hi Kim

Good to see you back working on the steam tractor! I'm pretty sure that the water pump casting is bronze, I had it kicking around for so many years I can't remember where I got it from. Maybe someone will recognize the part number? It may have come form Tiny Power or D&M model engineering both long gone.

Nice to see someone putting it to use.

Dave
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Vehicles & Models / Re: Steam Tractor 3/4" (Rudy K)
« Last post by 10KPete on April 21, 2018, 11:57:34 PM »
Dude! You're on it! Good to see this moving again. That is a beautiful casting and it would appear that you are doing it justice...

Adding shanks to make drills longer is an old thing and I'm glad you've found the way!!

Your sketches look like my drawings.. :thinking:

Pete
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Your Own Design / Re: Series 24 High Speed vertical
« Last post by Kim on April 21, 2018, 11:40:22 PM »
That's really nice Jason!  Is this one of your own design?  Part of your "Series 24" engines?  In any case, I really like it and it seems to run quite well.
Kim
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Vehicles & Models / Re: Steam Tractor 3/4" (Rudy K)
« Last post by Kim on April 21, 2018, 11:34:28 PM »
I canít believe its been FIVE months since I had any updates to my steam tractor!  The forum gave me an "Old Thread" warning when I posted this!  I had no idea it was going to be SOO long!

While I havenít had a ton of shop time, what little I had has been spent making the new mill feel at home, re-organizing my shop, and just generally improving things in my little hide-away.

But, today, FIVE months later (less 3 days) Iím making another progress post to my main project. :)

In my last post (way back in November), I had just completed the copper boiler.  And now, I need to figure out a way to hydro test it.  And to do that, I need a pump.

Dave Otto, hearing of my need for a pump, very kindly sent me this beautiful little pump casting.  He was on the ball and sent it to me four and a half months ago.  NOW, Iím finally getting around to doing something with it.  Thank you, Dave!



The casting will lend itself very well to building the tender water pump found in Kozoís A3-Pennsy Switcher book.  I have to make a few changes to things, but Iím using Kozoís plans with only slight changes. Hereís a drawing I made of how Iím going to make it all fit with Daveís casting.


First, as with all castings, you have to figure out how to hold the thing.  As it turns out, I was able to just clamp it vertically in my vise.  I used a square to make sure it was perpendicular to the spindle.  I was a little worried about it, but it seemed quite secure like this.  Here Iíve just spotted the center of the plunger hole.


Next, I drilled it to 3/8Ē, 2Ē deep.


Dave, I assume this is a bronze casting?  It machines like butter!  I love it!  It makes beautiful copper/bronze colored chips and machines like a dream! Thanks again for the casting!

The 3/8" hole is the long horizontal hole you can see in the drawing.  However, you can also see that I need a short 5/32Ē hole way at the bottom of that hole. The problem is that I donít have a long enough drill bit to reach all the way down there past the base of the pump cating.  Even a jobber length bit isnít long enough.  I considered ordering an extended length bit, but instead, I just made an extension for the drill I do have (seen in the bottom part of the picture).


And here Iíve just completed doing a 1/2Ē deep, 5/32Ē hole at the bottom of the 3/8Ē pump ram.


Finally, before undoing this setup, I needed to bore a 1/2" lip to hold an O-ring for the plunger.  This is the first time Iíve gotten to use my R-8 boring head.  Works pretty slick! :)


And hereís the completed O-ring hole.


Thatís it for today.  Next, I need to start on the water inlet & outlet ports at the other end of the pump casting.  Oh, yeah, and I need to add a tab to the casting for attaching the pump handle.

Thanks for looking in at my long-ignored build thread!
Kim
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From Kits/Castings / Re: Textile Mill Diorama
« Last post by J.L. on April 21, 2018, 11:20:49 PM »
Larry, you are right. The whole idea of getting that hole in the pedistal blocks is so that the bearing inserts can be machined to fit exactly.

Thanks Tom, that's just what I need. I'll send you a PM.

John
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From Kits/Castings / Re: Textile Mill Diorama
« Last post by Larry Sw on April 21, 2018, 11:01:00 PM »
A 5/8" drill bit will drill a hole a bit larger than 5/8" but if you can make your bronze insert to fit it's OK.

Larry
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From Kits/Castings / Re: Textile Mill Diorama
« Last post by zeeprogrammer on April 21, 2018, 10:48:29 PM »
I just used one of those (or similar) for boring my cylinders. My tool post holder was an AXA 250-102...designed to take a boring bar (or turning cutter).
It has a groove running lengthwise on the bottom that the cutter shaft sits in.
The cutters don't have a flat on the shaft.
My cylinders are about 1 1/8" long and I was just able to do it by drilling the bore with a 3/8 drill bit first.
Longer cutters would need a larger bore to get into.

As for springing...sneak up on it and take a finish path.

If your bore is too small, then yes, you may be out of luck. But can you drill it a bit larger before boring?
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From Kits/Castings / Re: Textile Mill Diorama
« Last post by wagnmkr on April 21, 2018, 10:46:09 PM »
John, I have a lot of experience with those boring tools and I am happy to come over and help. I also have a 5/8 drill with a 1/2" shank.

Tom
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