Rushforth

piet schuurs · Post by **piet schuurs** » Sat Nov 28, 2009 3:39 pm

Ohh dear, yes now I understand it, sorry!
Sometimes its difficuld for me to get it all right
I did that on the white painted garage floor.
Stil feel it.
regards piet

mcandrew1894 · Post by **mcandrew1894** » Mon Nov 30, 2009 1:15 am

No worries Piet...
This was from this summer just before a cruise and in front of my house.....I'll try to find more

87gn@tahoe · Post by **87gn@tahoe** » Mon Nov 30, 2009 1:51 am

I LOVE that engine!

What I wouldn't give for something like that scaled up a few sizes.

The whole package is beautiful.

piet schuurs · Post by **piet schuurs** » Sun Dec 13, 2009 8:53 am

Yes, yes find more Dave.
She looks a little bit short on the pictures, ha ha
Maybe some of the condenser?
Iám very interested in that.
Piet

mcandrew1894 · Post by **mcandrew1894** » Sun Dec 13, 2009 12:19 pm

Here's some shots of the condenser

1 square foot / HP......OR

.000124 m2 / watt..............

The arrow looking thing at the front is just a fairwater. the copper is made from copper plumbing pipe, with a pin at the front that fits into a hole in the fairwater and lets the condensor expand and contract with temperature...sorry its not prettied up much...still experimenting

It works!

Dave

piet schuurs · Post by **piet schuurs** » Sun Dec 13, 2009 4:31 pm

Nice Dave, thank you.
I'll think the pipes are about 1 inch?
But the lenght of them?
I like the streamline before the condenser, good idea.

Piet

mcandrew1894 · Post by **mcandrew1894** » Sun Dec 13, 2009 5:11 pm

They are actually 3/4 ID tubing which makes the OD about 7/8".

Take the Outside diameter in feet (0.875/12) x 3.1415 x L = 2 (IHP) for my engine.

I have some condenser area ( 1 square foot) in the feedwater heater also, so I think I am putting out a bit over 2 IHP....

L = 8.73 feet approximately which is what it is....for your condenser, it will need to be longer or larger in diameter or both.

so

OD (feet) x 3.14159 x L (feet) = BHP ( I think you said yours was 3)

Using 7/8" OD tubing

(.875/12) x 3.14159 x L = 3

L = 3 /((.875/12) x 3.14159) = 13.096 feet (OK call it 13 and skip the extra 1/8":D)

Dave

PS Oh and Silver solder only!.....if you break you condenser, your in for a fun time keeping afloat....so don't go cheap here...

piet schuurs · Post by **piet schuurs** » Sun Dec 13, 2009 8:24 pm

Thank you Dave,
Its all clear to me now, you are a perfect teacher.
Yes, when I bought the engine in England the seller sad it was about 5 hp. But I think thats a little bit to high. 3 hp is closer I'll think.
I solder everything whit silver, everyting fits than and its fun to do.
Keeping her a float would be nice to start whit I think, thats difficuld enough.

Thanks for the instructions Dave,

Piet

mcandrew1894 · Post by **mcandrew1894** » Mon Dec 14, 2009 12:14 am

Your welcome Piet...any time.

If you can determine the cut-off of your HP cylinder,and the expected engine speed, I can determine how much steam you will be using. You can usually use 45 pounds /Hp/hour as a good starting point.

Dave

piet schuurs · Post by **piet schuurs** » Wed Dec 16, 2009 9:21 am

Hi Dave
Nice guy you are, now I lost the way again.
The cut-off of the HP? I know the HP. I know the the stroke and the diameter off the cilinder.
But what is the cut-off?
The boiler I have is can give 185-200 pounds steam an our, firering coal. I use parafine.
So I think something as 160-180 p/u by 150psi.
The engine is 1,5X3+3,5.

Piet

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