Dake Steam Engine in 3D by Ernie Daniel

[JorgensenSteam]

Here is a set of drawings with 3D renderings for the Dake steam engine, created by the masterful Ernie Daniel, who is a frequent HMEM reader.

Ernie gave me permission to upload these files to the HMEM site.

Thanks Ernie, beautiful 3D work.

Edit: Please note that these drawings are untried and unproven, so do your homework and double check everything if you choose to use them. They are offered "as-is" with no guarantees whatsoever. Thanks.

 

[JorgensenSteam]

Page 3

 

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Page 4

 

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Page 5 & 6

 

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Page 7 & 8

 

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Page 9 & 10

 

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Page 11 & 12

 

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Page 13

 

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And a partial assembly of the Dake engine.

 

[JorgensenSteam]

A few more assembly pictures.

 

[pro-e-geek]

Wow, those are some beautiful drawings/images.
Outstanding job.

John

 

[JorgensenSteam]

I was so inspired by Ernie's work that I made the assemblies shown at the bottom of the posts.

Ernie has the best renderings I have seen, and he does it all with Alibre.

 

[fakeshade]

these all models are workin models right .. . . . . plz assist me with an ans i'll be greatfull. . . . ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ???

 

[barnesrickw]

Here is one on display at the Muskegon Heritage Museum on display from the grandson of inventor and manufacturer of the Dake Engine. The wooden parts are some casting molds I repaired.







Rick

 

[Flopearedmule]

Has anyone used these prints to make a model? This looks like a really cool and unique steam engine??
Is there anymore prints out there to build this Dake engine?

 

[Anatol]

For those who were initially mystified, like me (old hands probably know all about this eccentric engine) - this engine has square pistons without rods. The Dake engine was patented in 1888, and was based on an earlier, less successful version of the the same idea by Root (1863). Doug Self, as usual, has a great page on square piston engines: http://www.douglas-self.com/MUSEUM/POWER/squarepiston/square.htm

There have have been a lot of unlikely design ideas in the history of stream, and square pistons is right up there with them. Many of these were unsucessful, the Dake engine was, however, successful (equally unlikely).

What I find interesting is that the two nested square pistons operate in a way similar to (the idea of) nested scotch yokes - resolving rotational movement to linear movement mutually at 90 deg. Its fascinating how the basic topology of reciprocating pistons to rotary shaft is so ' turned inside out' in this engine.

video of a working engine (by Allan Dake) at
and a really nice description of a really nice model here

anyone know this maker?

 

[Flopearedmule]

anyone know this maker?

That's Stewart Hart. Potty Engineering.
Here is a link to him building this one.

https://www.model-engineer.co.uk/forums/postings.asp?th=74898

I've been searching online for an hour on this engine. It's pretty cool, and it looks really simple to build.

 

[Anatol]

That's Stewart Hart. Potty Engineering.
It's pretty cool, and it looks really simple.

Thanks
Hart is a pretty impressive machinist
simple? its certainly got minimal moving parts and the valve/port system is diabolically clever
As for making it - with good enough tolerances - I'll let the experts chime in, but I'm guessing there's a lot to making those square pistons (work).

 

[kadora]

I am amazed with this engine.

 

[SBWHART]

Ernie's drawings are very well detailed along the lines of an original:- for my model I very much simplified the design if any one would like a copy of my drawing just drop me a PM with your email address and I'll mail you them.

Stew