Hypocycloidal Steam Engine

[RobWilson]

Hi after a few days deliberation and looking through plans i have decided to build an Epicyclic Steam Engine designed by Bill Reichart.
So far i have just about finishes solid modeling the engine an all seam well, as i go along i will be adding some touches of my own and have fiddled with a few things in the design already , cant help myself. I hope to make a start on the build in the next few days.
Rob

 

[cobra428]

Hey Rob,
Love to see that build! I bought those plans a few years back. It's on my build list........someday I'll get to build the stuff I got plans for!! Go for it!
Tony

 

[RobWilson]

Hey Rob,
Love to see that build! I bought those plans a few years back. It's on my build list........someday I'll get to build the stuff I got plans for!! Go for it!
Tony

Hi Tony i no what you mean, i think i have enough engine plans for two life times there are too many great engines to build,i still have my Rider Ericsson to finish
Rob

 

[Jones]

That looks like a great engine. There is a very similar engine which is displayed at my local club, but it's called a "hypercycloidal" engine. Has exactly the same crank mechanism... Hypercycloidal sounds better IMO.

Good luck with the build!

 

[mklotz]

Technically, hypocycloid is correct. It's the curve generated when one circle rotates on the interior of a larger circle.

http://mathworld.wolfram.com/Hypocycloid.html

An epicycloid results when the smaller circle rotates on the exterior of the larger circle.

http://mathworld.wolfram.com/Epicycloid.html

 

[RobWilson]

That looks like a great engine. There is a very similar engine which is displayed at my local club, but it's called a "hypercycloidal" engine. Has exactly the same crank mechanism... Hypercycloidal sounds better IMO.

Good luck with the build!

Hi Andrew i recon Hypercycloidal sounds better too and i will change the name,cheers for the info Marv;D
Rob

 

[cobra428]

Rob,
Very nice! Now, give up the secret....How did you do those outside radii in the corners ???
Rotary table?
Tony

 

[RobWilson]

Hi Tony , no secret, CNC ,getting rid off the radius corners so i had square corners took the time.

 

[PTsideshow]

Here is another version of that type engine, and Rich has some very good photo's and info.
http://www.stationarysteam.com/cycloid.htm
glen

 

[cobra428]

Rob,
You dog you :big: NO CNC ALLOWED th_rulze stickpoke
Tony

 

[zeeprogrammer]

NO CNC ALLOWED th_rulze

Please provide chapter, paragraph, and section number of the offended rule. ;D

For that matter...please direct me to the tome of rules so that I may educate myself. I certainly don't want to break any rule of this very august group. :big:

 

[cobra428]

Zee,
If we let Rob get away with CNC the next thing you know he will be engraving his initials in fancy script and all kinds of fancy "Victorian" stuff on the engine. Being a fellow hand machinist I thought you'd have my back and help me make up some rules Rof}
Tony

 

[Cedge]

Okay Rob.... you can use the CNC, but you gotta to keep your eyes closed...(grin). This is an engine design that is steadily rising on my build list. Looks like your project is going to be a "must watch" here.

Steve

 

[zeeprogrammer]

Zee,
If we let Rob get away with CNC the next thing you know he will be engraving his initials in fancy script and all kinds of fancy "Victorian" stuff on the engine. Being a fellow hand machinist I thought you'd have my back and help me make up some rules Rof}
Tony

Ah...yes yes...you're absolutely right. Apologies.

Rule x: When making 'period' pieces one should be limited to 'period' tools.

Rule x + 1: Only 'social' rules really matter.

Rule x + 2: Don't listen to 'Zee'.

Rule x + 3: Did I mention 'don't listen to 'Zee'?

Rule x + 4: Thread detours okay. Thread re-routes not okay.

Love this forum. :big:

While typing this I see that 'Cedge' advocates breaking 'x'. Shame shame shame.

 

[cobra428]

Zee
Now your talking Thm: More rules :big:
Tony

 

[mklotz]

Hypocycloidal, not hypercycloidal.

Sheesh, what am I going to do with you guys?

epi - outer, outside (think epidermis = outer skin)
hypo - inner, inside, under, beneath (think hypodermic = under the skin)
hyper - excessive (as in hyperactive or hypertension)

 

[Kermit]

Rob, I bet you are the man who could answer this.

I haven't been able to find any written reference that answers. The oldtime original alloy called Brass and the one called Bronze. Was it strictly adding tin to make Brass and Zinc if you wanted Bronze?

 

[PhillyVa]

Rob,

Your doing a great job...regardless of what Marv says....Sorry Marv interesting points made. Hoist one for yourself.

Regards

Philly

 

[RobWilson]

Cheers Philly

Rob, I bet you are the man who could answer this.

I haven't been able to find any written reference that answers. The oldtime original alloy called Brass and the one called Bronze. Was it strictly adding tin to make Brass and Zinc if you wanted Bronze?

Very close Kermit you just have it the other way round, copper + tin = bronze , copper + zinc = brass
Cheers Rob

 

[Kermit]

It's an old feeling I haven't had in such a long time.

feeling like a kid in school afraid to ask questions because I even get those wrong...

:bow: