A WINTER’S CHALLENGE.

[Jon CameronParticipant @joncameron26580]

Having read this thread and not just the last few comments, I've got to say I'm somewhat surprised. They are plans out there of quite interesting engines if you look for them, I recently found one steam engine which was shaped like a 6 shooters bullet holder, (don't know the name of it, not into guns), with a flywheel sticking out, from the outside the flywheel moved when steam/air was applied, inside the bullet holder there was a conventional steam piston and crank working away hard.

I'm currently planning on building a small steam trike, a little occilator, boiler, Ali wheels and rubber tyres, with a frame from hard brass tube. Will it run? Don't know but worth the fun of trying in any case.

Both of these I'd consider modern designs, even if the principle of a simple occilator is used for power. The "design" is pretty new.

If there's enough interest I'll keep sketches of all my work and can then draw them up reasonable accurate for them to be solidworks'd have used solid works before so I know roughly what is needed from the drawings too to make a rendering. I can also post progress here again if it's of interest?

[Dave HalfordParticipant @davehalford22513]

Dave,

Popular engine designs all have one thing in common – they look good, if they are ugly why build them?

A new design needs some artistry put into the look of the thing or it wont have mass market (or any) appeal.

[opochkaParticipant @opochka]

Here is the idea of something "new"

Old piston technology but used in a different form.

Very few moving parts, but it works.

[MuzzerParticipant @muzzer]

Posted by Jon Cameron on 31/10/2017 20:11:56:

Hello Murray,

I believe you mean the wankle rotary engine.

No – I mean a simple compression ignition, piston engine. Literally TWO moving parts and possibly a total of 3 components in total – could you get any fewer? Probably capable of little more than running.

Murray

[Ian Skeldon 2Participant @ianskeldon2]

Posted by JasonB on 31/10/2017 20:02:34:

Posted by Ian Skeldon 2 on 31/10/2017 18:50:36:

@ Jason B,

Nice engines and the four strokes look beautiful, any vidoe of them running?

Video of most of them somewhere in this lot as well as some odd bits being machines, I like to use my tools rather than polish them

Lots of nice stuff there Jason, suprised to see your so productive with what looks like a normal model engineering size lathe, I had an image of a huge Harrison or similar. I couldn't find any video of the four stroke but not to worry, there was plenty of other interesting stuff, thanks for sharing.

Ian

[Old SchoolParticipant @oldschool]

These are two tether cars that I built their is about 50 years of development between the two the modern car will run at about double the speed of the old one.

[JasonBModerator @jasonb]

There was quite along article of the aircooled Hale Rotary that Dave links to the video of in Model Engine Builder mag issue 15 if anyone want to read further but I don't think they published working drawings but you could come up with something from the 3D renderings in the mag.

For Ian, all done in a shed with the average Warco and Sieg machines

And what's in the box

[JasonBModerator @jasonb]

Posted by Muzzer on 31/10/2017 20:00:39:

I reckon the simplest possible engine would be a 2 stroke CI with just two moving parts – the crankshaft and a combined (spherical) piston / conrod, plus fixed carburettor etc. Wouldn't be easy to start, very efficient or have much of an operating range but would be quite a novelty. No idea if anyone has ever made such an engine. If I ever tried my hand at model making, I think I'd have a go at that. But don't hold your breath…

Murray

Would the spherical piston be able to close off the ports enough as it would only have line contact with the ported cylinder? A barrel shaped one may fair a bit better.

Edited By JasonB on 01/11/2017 08:21:59

[MuzzerParticipant @muzzer]

Probably barely. But a cylindrical piston would add more parts, whether it had a con rod or slotted yoke end. This is just armchair engineering of course – perhaps a "hot air" engine!!

Murray

Edited By Muzzer on 01/11/2017 09:01:06

[JasonBModerator @jasonb]

Posted by opochka on 31/10/2017 20:48:58:

Here is the idea of something "new"

Old piston technology but used in a different form.

Very few moving parts, but it works.

Dave does not seem to be that new an idea, this is an article by Westbury, if you look at the Fairchild engine that is almost identical to the Hale and dates from the 1920s!!

[opochkaParticipant @opochka]

Posted by JasonB on 01/11/2017 11:39:14:

Posted by opochka on 31/10/2017 20:48:58:

Here is the idea of something "new"

Old piston technology but used in a different form.

Very few moving parts, but it works.

Dave does not seem to be that new an idea, this is an article by Westbury, if you look at the Fairchild engine that is almost identical to the Hale and dates from the 1920s!!

Well that's interesting. !

Seems that just about everything that we think is "New" advanced design ….. has been done before…somewhere.

.

[Neil WyattModerator @neilwyatt]

Compressed air/CO2 engines are pretty simple.

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