British 0-4-0 Toy Locomotive: he said

[zeeprogrammer]

Thanks Larry.
Thanks Dean. You can bet I'm going to keep an eye peeled for machining goodies...where-ever I go.
Thanks Steve. I'll be sure to wave.

TroyO...Denver eh? Then you're well within reach. Moo, Cluck, Oink...I'll eat it. No Woof or Meow. It has to make a noise though...fish is not my favorite...well except for Shrimp. Love shrimp. We'll discuss brand of beer once you serve it. ;D

And yeah everybody...I know shrimp is not a fish. Sheesh. I meant seafood. Ha! I bet more than one of you started to reply before you read this last sentence. Eh Marv? :big:

 

[Deanofid]

Shrimp make noise. So do lobster & crab. I just can't hold my breath long enough to make
out what they're saying. Something about "butter".

 

[Foozer]

CA. Napa...San Fran...

If you hit SF, only thing worth doing that's not tourist trap related is walk across the Golden Gate Bridge. If ya like Artichokes bout 20 miles south of SF is Half Moon Bay, where I grew up. Nice 30 years ago, too darn busy now-a-days.

Have fun on yer trip, 'member CA has a 10 percent state income tax, nice place to visit but nada to live.

Robert

 

[Kermit]

I'm not able to recall the street, but downtown SanFran, many moons ago, I visited a place called Rooks and Becords. I went for to find me some nice music on vinyl, but they have lots of books there as well. If you get the chance to stop in, I'm betting you might find something worthwhile in the book section. Google can get you the street address.

Have fun Zee,
Kermit

P.S. There was a nice Pub a few doors down as well--in case you need further enticement.

 

[zeeprogrammer]

Thanks Dean...I knew I'd get another opportunity to say 'sheesh'. :big:
Thanks Robert. 10%! 'T' is interested in moving to CA. This might dampen that a bit.
Thanks Kermit. If we get downtown...I'll look for it.

Hopefully I can pop in the forum once in a while...that should help 'shop withdrawal'.

I'll soak a little comfy rag with WD-40 so I can hold it to my nose while I suck my thumb.

 

[zeeprogrammer]

Just a quick note..but wanted to thank Steve C for the suggestion on Monterey Bay Aquarium. Everyone enjoyed it. Even the 11 month old Sydney. And yes...I did wave to your grandkids. I could swear they waved back. ;D

Having a good time. The down side is my back went out just prior to the trip. Upside is I have a wonderful excuse for pain killer (wine) and no one is denying me...that.

The other downside is I haven't been able to keep up with the forum...I'm missing a lot and very sorry for that.

But the wine helps me forget. :big:

 

[walnotr]

Glad you enjoyed the aquarium. There are so many things to see. Too bad the BIG sunfish died before you got there. I swear it was almost the size of a bus! Only the little one now. It's only about as big as a Volkswagen. :big:

Thanks for giving the grandkids a wave. They probably were wondering who that strange programmer was.

Steve C.

 

[xo18thfa]

Very nice work Zee. You should be proud. It's an heirloom piece.

It's not a "toy", it's a live steam locomotive.

 

[Brian Rupnow]

Zee--I took time this morning to read through your entire thread. I am impressed!!! To paraphrase someone else, "You've come a long way, baby!!!!"---Great work.----Brian

 

[zeeprogrammer]

Thanks Bob.

Brian! That really means a lot to me. Thank you! Very much appreciated.

 

[zeeprogrammer]

So I got this brass valve stem while on vacation. (We were in St. Helena CA...family headed from the olive oil store...I headed for the auto parts store across the street.)

The other end of it is threaded. The package states 1/8" MNPT.

NPT = National Pipe Thread Taper
I'm thinking M is Male.


I'm thinking this is what my tap kit says is 1/8-27 or 'pipe'.

So I can then just make an adaptor and thread this thing on for the boiler pressure test.

He said.

[EDIT: Oh...drill tap size is 'Q'? 0.332"...I can't find Marv's equation.]

 

[mklotz]

You're supposed to have memorized that equation by now. You haven't been doing your homework.

Here's what you need. Copy it and put it in your notebook. It will be on the final.

PIPE THREADING DATA

S=NOMINAL PIPE SIZE (in)
T=THREADS PER INCH
D=DIAMETER (in)
TD=TAP DRILL

S		T		D		TD
------------------------------------------------------------------------------
AMERICAN STANDARD TAPER PIPE
1/16		27		0.3125		D
1/8		27		0.405		R
1/4		18		0.540		7/16
3/8		18		0.675		37/64
1/2		14		0.840		23/32
3/4		14		1.050		59/64
1		11.5		1.315		1-5/32
1-1/4		11.5		1.660		1-1/2
1-1/2		11.5		1.900		1-47/64
2		11.5		2.375		1-7/32
2-1/2		8		2.875		2-5/8
3		8		3.500		3-1/4
3-1/2		8		4.000		3-3/4
4		8		4.500		4-1/4
4-1/2		8		5.000		4-3/4
5		8		5.563		5-9/32
6		8		6.625		6-11/32
7		8		7.625
8		8		8.625
9		8		9.625
10		8		10.750
12		8		12.750

AMERICAN STANDARD STRAIGHT PIPE
1/8		27		0.405		S
1/4		18		0.540		29/64
3/8		18		0.675		19/32
1/2		14		0.840		47/64
3/4		14		1.050		15/16
1		11.5		1.315		1-3/16
1-1/4		11.5		1.660		1-33/64
1-1/2		11.5		1.900		1-3/4
2		11.5		2.375		2-7/32
2-1/2		8		2.875		2-21/32
3		8		3.500		3-9/32
3-1/2		8		4.000		3-25/32
4		8		4.500		4-9/32
4-1/2		8		5.000		4-25/32
5		8		5.563		5-11/32
6		8		6.625		6-13/32

 

[zeeprogrammer]

You're supposed to have memorized that equation by now. You haven't been doing your homework.

slap slap slap :big:

Interesting chart...

Taper shows 'R'.
Straight shows 'S'.

The chart I looked at on the net shows 'Q'.

I'm thinking I want straight.
And I'm thinking you always give the right answer.
So it's 'S'.

Thanks Marv. You'd make a good bad nun. ;D

 

[zeeprogrammer]

Marv...

I found your equation...

TD = MD - .013*DOT/P

MD = .405 (from the net...I measure .4)
P = 27

If I want 75% DOT then I get 0.3689...call it .368 or a 'U'.
I'm a programmer...sometimes we truncate rather than round. ;D

To use 'S' the equation gives a DOT of 118%. For 'T', 97.6%.

I drilled 'S' and when I tap, it tightens to the point I can't get more than a few threads.

From the above it would seem I should have drilled with 'U'.
I'm considering re-drilling with 'U'.

Your thoughts, comments, rulers are most welcome.

 

[Deanofid]

Zee, my chart says if it's a straight thread, the nomenclature is "NPS". For that, use an "S" drill.
Also says for NPT use "R".

If you're tapping a tapered thread, it does get tight after a few turns. Won't be like a regular tap, that
gets easier as you tap through a piece.

I'm thinking I want straight.

I'm thinking you want to tap it for the thread on the valve stem you got, which sounds like a taper.

And I'm thinking you always give the right answer.

Oh... You were talking to Marv, then.

Dean

 

[zeeprogrammer]

Thanks Dean. (Another guy always with right answers - but a softer ruler. ;D )

Then I'll leave it as is.

 

[mklotz]

Thanks Marv. You'd make a good bad nun.

ROFL. Good one. It's nice to see that Dean, the mother superior, agrees with this novitiate.

The equation isn't really meant for pipe threads although I guess it could be used for straight pipe threads. It doesn't apply at all to tapered threads.

If memory serves the taper in tapered pipe threads is 1/16 in/in. With care you should be able to measure your part to determine if it's tapered. (I bet it is.)

This chart may help...

http://www.sizes.com/materls/pipeThrd.htm

 

[Deanofid]

Thanks Dean. (Another guy always with right answers...)

Oh gosh.. Have you ever read anything I've written?

Do I know you?

 

[zeeprogrammer]

Do I know you?

Sure! You're the guy in Gobler, Missouri.....aren't you?
Or are you that guy from ID that's been a pain in my side?

 

[zeeprogrammer]

With care you should be able to measure your part to determine if it's tapered. (I bet it is.)

No takers. I did. You're right.

Now if I can get rid of the guests...I might be able to do something around here...
like....clean cobwebs and make parts.