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Member postings for Peter Krogh

Here is a list of all the postings Peter Krogh has made in our forums. Click on a thread name to jump to the thread.

Thread: Steam engine with centrifugal pump Pictures
10/03/2017 05:30:31

Thank you Paul and Duncan! As soon as I read "...to cushion the piston." it was one of those 'duh slap the forehead' moments. That feature prevents knocking the heads off with a flying piston!

Another learning moment brought to me by this Model Engineer Board.

Pete

09/03/2017 23:21:49

OK, now you've gone and confused me even more.... the steam pump. Why are there two steam ports for each end of the engine??? I've never seen that before!

Thanks,

Pete

09/03/2017 20:30:20

Thanks for the cool info, Reg!! It all makes sense of course...

Pete

09/03/2017 18:20:54

I've seen a lot of cent. pumps but never one with an intake arranged like that one!!

Great illustration...

Pete

Thread: Guillotine Problems
06/03/2017 01:07:55

Ahhh, what dumb yanky sheet metal workers call a shear...

Thanks!

Pete

05/03/2017 23:42:41

What is that machine? What does it do?

Ignorant yank here....

Pete

Thread: Speedometer
02/03/2017 08:35:04
Posted by vintagengineer on 01/03/2017 22:26:30:

On a Smiths speedo at the bottom of the face should be a four digit number or the last four digits of the model number, this is the number of turns per mile.

Now that's some great information!! Thanks.

Pete

 

Edited By Peter Krogh on 02/03/2017 08:35:41

Thread: Bench grinder wheels
17/02/2017 22:24:15

I've always used just my hands to hold the wheel. I never found I had to tighten the nut more than that.

Pete

Thread: Model Engine Maker
19/01/2017 08:51:08

So much for the notice... Hopefully the move works first time, the admins have had quite a bit of trouble lately.

Pete

Thread: What Did You Do Today (2016)
29/12/2016 01:23:25

I just watched the video in the link, Bazyle. I must say that you have an excellent program going there.

Congratulations to all.

Pete

Thread: Name plates
27/12/2016 23:23:50

Here's one:

http://www.gasenginemagazine.com/gas-engines/diy-brass-nameplates

Pete

Thread: Where have the picture numbers gone?
01/12/2016 15:50:16

I'd sure like to see the post number right up there in the green stripe, plain and obvious!!

Pete

Thread: Condenser.
30/11/2016 13:38:04

In the marine applications I'm familiar with, the 'large' pump, the vacuum pump or wet air pump, pulls a vacuum in the condenser shell which 1) lowers the pressure which causes greater pressure across the LP cylinder, 2) by lowering the pressure causes the steam to cool and condense faster, and 3) pumps the condensate out to the hot well. The hot well is where the oil and crud is separated from the condensate which is then fed to the boiler by the 'small' pump. Oil in a boiler will ruin it very quickly as it burns on to the surfaces and seriously interferes with steaming.

I have an excellent document (30 pages of .pdf) on the subject. If you are interested I will email it to you. I don't know how to 'link' it here.....

Pete

Bazyle and I were typing at the same time... The document I mention is specifically about the Edwards air pump which was designed for the wet pump function and is the best for the purpose.

Edited By Peter Krogh on 30/11/2016 13:42:00

Thread: Savage Aggressive big files
16/11/2016 04:38:06

I wasn't going to mention the rust stain patterns.....along with the blood.

I'm not a farrier, just have done shoeing back when under Grandads watchful eye...

Pete

 

Edited By Peter Krogh on 16/11/2016 04:39:18

16/11/2016 00:07:08
Posted by Hacksaw on 15/11/2016 16:30:26:

they're rasp one side and coarse file the other , no safe edge .

Edited By Hacksaw on 15/11/2016 16:32:36

That is, I think, a ferriers tool for trimming hooves...

Pete

Thread: The Alternate Glossary
14/11/2016 20:15:40

And then there's the infantry favorite....

BOHICA

Bend Over, Here It Comes Again!

Pete

12/11/2016 00:47:00

POTS.....

Plain Old Telephone System

Yeah, it's real, at least over here!

Pete

11/11/2016 13:42:21
Posted by Bob Rodgerson on 11/11/2016 13:11:13:

I've never heard of PUNTS before, are you sure you have spelled it correctly?

Oh yes, I did! We won't talk about the other....

Pete

11/11/2016 13:08:31

And a rather strange one:

PUNTS....... People of Utterly No Tactical Significance.

Must be a military thing....

Pete

Thread: Milling machine Y axis
11/11/2016 08:46:13

I have never seen a mill, or lathe, where turning the handle clockwise moves the table towards the operator.

Pete

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