Rotary valve twin steam engine

[max corrigan]

This is my rendition of the rotary valve engine in plans, i would like to thank whoever posted them it is a great little engine and runs well
My version was made from scrap cast iron,stock material, and anything else that fitted the bill
Here are a couple of pictures, then i will try the vids
Regards Max

Ps looks like the two attachments are of the same picture sorry!

 

[Maryak]

Max,

That's one fine looking engine. :bow: :bow:

Best Regards
Bob

 

[HS93]

that looks great , what bore and stroke is it?

where did you get the plans for it

thanks

peter

 

[ironman]

Beautiful finish on the parts. I built 2 of these. Even my sloppy first one runs great.
Really like your intake and valve. Keep up the good work and pictures. Ironman

 

[SAM in LA]

The dark color with the polished brass looks really nice.

SAM

 

[Philjoe5]

Nice work Max. Great detail work. I like the black/brass combo. :bow:

Cheers,
Phil

 

[Blogwitch]

Can anyone help me in locating the plans for this engine please?

Bogs

 

[max corrigan]

A couple more pics
Peter HS93 the bore is 9/16" and stroke is 7/16
John (bogs) and Peter the plans are under "Elmers Steam Engine Plans" open page scroll down to Steam Engine Plans" (not Steam Engine Plans 2) scroll down on right hand side you will see Rotary Valve Engine
let me know if you get them
I'm gonner try the video in seperate post having trouble getting files in one post that's the problem not understanding computers
Regards Max.....

 

[HS93]

thank you for that I will have a look .

Peter

 

[max corrigan]

I hope this Vid comes out OK, i first ran the engine on air, but steam gives it another dimension, I think!
The vid seems to show the engine running anti clockwise which is not the case, and the faster the revs the slower the valve linkage appears to move! very strange!
This engine can run at quite high revs, so much so, the grub screws i made (with slotted heads) flew out! hence the odd looking screws you might notice
i think i mentioned my bad steaming layout, you will see one exhaust blasting on the oiler which keeps it nice and hot! not quite the right idea idea :-[
There were no leaks on the engine other than the ends of the valve rod, which were as in the plan, i put oil grooves on the pistons "alla Stuarti used 0 rings under the manifold, and tel's method for sealing cylinder head ie PTFE tape twined around head studs, no gaskets, as i said no leaks most of the steam is coming from the safety vale on the boiler and the exhausts
I did do a spasmodic build arrangement as i went along with pics, but now it would be retrospect ??? but can attempt to post if anyone is interested
Regards Max

 

[Blogwitch]

Many thanks for that Max.

Congratulations on a good runner.


John

 

[ironman]

Bogs, disregard my previous post, the likn is not right. Sorry bout that. It is as stated on John tom's site.
good running little 2 cylinder. Be nice to have a reverser on it. Maybe you can do that and post it. Have a great day. Ironman

 

[Aquarius21]

Hi, I have barely begun to do my first build and it is of this engine. A lovely job done on yours!
Question. Where could one find plans on making a boiler like yours? thanks Quincy

 

[rake60]

Very nicely done Max! Thm:

Rick

 

[arnoldb]

Well done Max :bow:

Your "ostrich" sure has a reason to smile with it's head held high ;D

Regards, Arnold

 

[max corrigan]

Thanks everyone for your kind comments! it certainly gives a good feeling to be among such an illustrious bunch as you all are, and all the things i've learned from this site are invaluable for novice machinist like me
Aquarias21 i can't supply plans for the boiler as it is a Stuart boiler i bought on ebay a couple of years ago for less than half the price it would have cost from Stuart's if you look at the follow up engine on photbucket, you will see it harnessed to a Stuart mill engine that was my first build,
And good luck with your build of this engine, if you need help don't be afraid to ask, especially the valve rod! don't ask me how i know i made three of them before i got it right
Arnold yes the ostrich does look happy, but he might replaced with this engine that will knock the smile off 'is kite
Regards Max

 

[BenPeake]

I enjoyed watching your engine running - lots of movement. Bravo! Are you going to take up the reversing lever challenge?

 

[max corrigan]

I enjoyed watching your engine running - lots of movement. Bravo! Are you going to take up the reversing lever challenge?

Ben i did think of a reverser valve but could'nt find any plans! was also thinking of a whistle for some strange reason ???
Thanks for your comment Regards Max.............

 

[Anatol]

Hi all
Max, you made a pretty engine.
I was looking at the original plans for this engine -then I saw this (old) thread.
Does anyone know which magazine (or book) it was published in? Does anyone know who designed it? Was it Verberg? Its very like the Stuart Sirius (isn't it?), but with a Corliss type valve.
Looking at the plans I was wondering about possible design changes.
1. could you put the flywheel between the cranks? I'm thinking of a flywheel in two halves, screw-clamped on the shaft.
2. why not make the valve crank longer and dispense with the complex linkage?
3. why not have separate inlet and outlet ports? This would give more surface area on the valve shaft for sealing, and insulate inlet steam from the cooling exhaust.

 

[adolfgalland]

Anatol, The plans for this engine were in the December 1961 Popular Science magazine. It starts on page 144 and was from a guy named Henry Frostick.

Gary