Simpson and Shipton Short Stroke Engine

[Stewart HartParticipant @stewarthart90345]

Just completed drawing up the Simpson and Shipton Short Stroke Engine.

 

The prototype for this engine was first shown at the great exhibition of 1853 only two were ever made but details of the second are vertualy none existant.

 

It has a novel rotary cylinder the best way I can descibe it is that it looks like a captive eccentric.

 

The model will have a 30mm bore with a 100mm dia fly wheel i’ve more or less got all the material together and I hope to start cutting metal soon.

 

I’ll keep you posted on progress

 

Edited By Stewart Hart on 04/01/2012 09:12:05

[Stewart HartParticipant @stewarthart90345]

[Sub MandrelParticipant @submandrel]

This is the one with a piston that’s a cylinder lying on its side?

 

I think Tubal Cain may have built one and described it in EIM, but I stand to be corrected. The challenge is getting the ‘piston’ a good seal at both ends as well as the sides.

 

I look forward to hearing more about progress.

 

Neil

[JasonBModerator @jasonb]

Stub, You may be thinking of the one Anthony Mount did.

 

Stew when I saw this post yesterday I thought it would be to say it was finished as you posted that drawing elsewhere a week or two ago

 

J

Edited By JasonB on 05/01/2012 20:49:37

[Stewart HartParticipant @stewarthart90345]

This site does my head in

 

This is the fourth time I’ve tried replying to this thread.

 

Lets try again

 

Neil Antony Mount did a very nice model of this engine that you can buy a casting kit for from polly models.

 

As I’m a tight wad I’m going to use bar stock.

 

I’ve just bought some PTFE for the piston I’m hoping I can get the fit close enough to give a good seal failing that I’ll use steel with a groove arround the rim of the piston filled with o ring cord or graphite packing, I’ll just have to see how it goes.

 

I’m not that quick Jason the drawing you saw was just the front veiw, what with Christmas I’ve only just got the side veiw and everything dimensioned up ( I did post the side veiw but for some reason its not showing)

 

Today I got the cylinder squared up, and I’;; start to chew the rest of it out tomorrow not quite sure how but these things have an habbit to sort themselves out once you start.

 

Cheers

 

 

Stew

[Stewart HartParticipant @stewarthart90345]

Made some progress got the cylinder and covers done along with the steam chest and some of the links.

 

[Stewart HartParticipant @stewarthart90345]

A bit more progress

Steam Chest and Valve linkage

Piston, Cranks and Con Rods

Eccentric Strap

Stew

[Stewart HartParticipant @stewarthart90345]

Completed the eccentric and did a trail assembly

Stew

[NJHParticipant @njh]

Stew

You make it all look so easy!

Lovely stuff – please keep it coming.

Regards

Norman

[Stewart HartParticipant @stewarthart90345]

Hi Norman

Thanks for your interest and kind comment.

Stew

[David Clark 13Participant @davidclark13]

Hi Stewart, what happened to the photo? Not showing on an IPad.

[Richard MarksParticipant @richardmarks80868]

Nor on my computer.

[John HinkleyParticipant @johnhinkley26699]

If you look through Stew's albums, there are three pictures of the finished article, posted in May 2012. It would seem that the originally posted pictures have been removed for some reason.

John

[Author]

Posts