Horizontal engine

HI

Does any one know of a published design for a simple horizontal steam engine about half as big again as the "Potty" engine.

I'm finding 2mm screws and their taps etc., a bit too small at my advanced age.

Many thanks.

Richard 2.

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Are you thinking of a bar-stock construction or a casting kit engine.?

Nick

Just about any published design can be made larger just by multiplying all the measurements by a common number, metric drawings can be made 50 % or 100% larger. Same for imperial or you can take imperial designs and make them metric quite easily by allowing 1/32" = 1mm and so on. I have seen the Potty Horizontal made larger.

I do have a design for a 24mm bore horizontal but not published it yet no castings needed and being a bit more refined than the average bar stock engine does still have a couple of M2 fixings though most are M2.5 or M3

JasonB: Do you have any more pictures of that engine please, I am interested to see the 'gubbins' on the other side where the reciprocating takes place

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I am one of his 'stalkers' on youtube.

A few shots of the gubbins sorry about the poor colour need to take some better ones.

And the gubbins in motion which probably shows things better particularly if you blow it upto full screen

Looks like the Fan Boy beat me to it

Edited By JasonB on 29/08/2017 16:46:10

Many thanks everyone.

I like the look of the Thompstone workshop engine but it seems there are castings for the cylinder and valve spindle guides.

Other than that I think it would be an ideal job for me if not too large.

Workshop unusable for this week as I am replacing the "bits and pieces" shelving with decent shelving bays.

Richard 2.

The only casting I used was the flywheel but at 5" dia could be cut from solid, fabricated or buy in a casting. There is some silver soldering needed on the cylinder.

JasonB: Thank you for the extra photos and the video, very nice. I have plans for Stewart's Pottymill now and planning on making a start on that once we get moved and the new workshop sorted out

what do I have to put into a google search to find somewhere where I can buy the blue hose and the brass fittings that connect the steam to the engine in the video ?

Thanks

Bill

............. and by the way nice engine ..... looking forward to being able to do something similar one day in the distant future.

Push fit pneumatic hose and fittings will find it. That is 4mm hose in the video, 1/8" BSP fitting and than a home made adaptor to get from the BSP to M5 x 0.5

The other end of the hose goes back to a regulator, one of several screwed into a manifold that is fed from the compressor. Different hose sizes to suit the size of engine.

Edited By JasonB on 02/03/2019 08:31:18

Jason, did you ever publish drawings for that engine?

I do like the extra detail you put into your engines Jason, for example how the con rod tapers down at each end rather than just a piece of round bar and the curved webs on top of the guide bars, it makes all the difference and very pleasing to the eye.

Great stuff

Ron

Ian, not yet. Martin has the article for the Entablature engine shown in the video I posted earlier today, if that goes down OK then I'll do this one for the mag if not probably do it as a build on here and MEM.

Jason, is your design for the manifold shown anywhere?

It's nothing special. Just a piece of aluminium approx 20 x 25 x 150 drilled most of the way through from one end with a 1/4" BSP tapping drill and the first part of the hole tapped 1/4" BSP for connector to compressor (I've now got a quick realease coupling on it)

Then 5 holes drilled down from the top into the long hole which are tapped to suit the valves, I think the ones for 4 and 6mm OD pipe are M5 and the one for 8mm pipe 1/8" BSP.

That's all there is to it.

Edited By JasonB on 04/03/2019 12:56:18

Thank you Jason, much obliged.

Did the entablature build get published and are the horizontal plans available or published?

Entablature is with the Editor and has been since the end of last year, hopefully it may get an airing now that the ME Boiler series has ended.

Not done the working drawings for the horizontal yet as I was waiting to see how the Entablature was received.