The Steamboating Forum

Will you just stop it already! You're making me feel inadequate

I really like the brazing fixture for the trough. Very nice!

Ken

Hello,

every engine needs an throttle valve, so i have asked my library. I found two different solutions, a piston valve (STUART Undertype) and a slide valve (Navy K engine). The advantage of a piston valve is that the actuating forces are independent of the effective vapor pressure. That's why I chose it.

The valve body i have built from three gun metal parts, they were silver soldered.


There are four ventilation holes in the piston to prevent it from sucking at "full throttle" position.


Best Dietrich

Hello,

I wanted to know what it looked like in the work position, so I put it in this position.


I like it. For those who think that a simple ball valve would have done it - yes, but a technical solution should also look nice

Next step will be to built the quadrant and the operating lever.

Best Dietrich

Hello,

a little success in building the throttle valve - the operating lever and some other parts are drawn.


Best wishes Dietrich

That will no doubt work like a wonder and has the added advantage of looking much nicer than the ball valve

Hello,

to be sure that the measurements are correct and the valve actuation works as desired, I cut out the parts with the cutting plotter and built the quadrant on a trial basis.

The result can be seen here. I am satisfied and will now have the parts laser cutted.



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Dietrich

Wow!

That looks so useful and elegant. I look forward to seeing it finished in polished bronze/brass or whatever.

Regards

Pete

Hi Peter,

... I look forward to seeing it finished in polished bronze/brass or whatever.

some actual pictures of stainless steel and some other materials.

The valve is mechanical ready and all parts move well.

The operating lever can be clamped in any position with the handwheel. The handle is stained and oiled beech wood, its shade is pear. The handle is screwed onto the operating lever, so it sits firmly. The pivot pins are made from the shaft with M5 x 0.5 mm thread and the head from 8 mm hexagonal brass, both are silver soldered.


Regards
Dietrich

Dietrich,

Einfach Klasse. Very nice work. I would like to build something similar for the tug at some point.

-Ron

Hi,

the throttle-valve is finished. I installed a cover plate in front of the quadrant so that it looks more pleasing.


I also installed a connecting rod between the valve and the cylinder, so that the valve is secured against twisting.


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Dietrich