Author Topic: Double acting Double cylinder Oscillator  (Read 30274 times)

Offline Brian Rupnow

  • Full Member
  • *****
  • Posts: 7575
  • Barrie, Ontario Canada
Double acting Double cylinder Oscillator
« on: May 24, 2018, 01:52:02 AM »
This is an engine which has always interested me. I think I first seen an engine like this posted by Tel from Australia. I was bored today, so I thought I would begin sussing out a design for one, built from bar stock. The one in this post has 1" bore cylinders with a 1.732" stroke. The flywheel is almost 4" in diameter (I am still trying to find a way to use those two steel rings I made up for the Kerzel. They didn't work out on the Kerzel, but they may do fine here.) Stay tuned, and as the design develops I will posted updated models.

Offline crueby

  • Full Member
  • *****
  • Posts: 18559
  • Rochester NY
Re: Double acting Double cylinder Oscillator
« Reply #1 on: May 24, 2018, 02:01:20 AM »
Excellent, I love it when you get bored!!


 :popcorn: :popcorn: :popcorn:

Offline Art K

  • Full Member
  • ****
  • Posts: 1761
  • Madison, Wisconsin USA
Re: Double acting Double cylinder Oscillator
« Reply #2 on: May 24, 2018, 03:02:27 AM »
Brian,
Chris is right its time for the :popcorn: as your builds are always entertaining.
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline Brian Rupnow

  • Full Member
  • *****
  • Posts: 7575
  • Barrie, Ontario Canada
Re: Double acting Double cylinder Oscillator
« Reply #3 on: May 24, 2018, 04:33:58 PM »
Another 4 hours and we go from concept to an animation of the finished engine. I decided that a 4" flywheel was small enough that it looked out of place, so I bumped it up to 6" diameter.
https://www.youtube.com/watch?v=FUln-ar9By4&feature=youtu.be
[/img]
« Last Edit: May 24, 2018, 04:58:12 PM by Brian Rupnow »

Offline Jasonb

  • Full Member
  • *****
  • Posts: 9467
  • Surrey, UK
Re: Double acting Double cylinder Oscillator
« Reply #4 on: May 24, 2018, 04:45:12 PM »
I think I first seen an engine like this posted by Tel from Australia.

That would be the "Green Twin" from Preston's as it became known. Tel made a start on his and Pat Jorgenson drew it all out in CAD and made some castings for it. I've still got it on my "future projects" list and if I do make it it will be fabricated but made to look like castings.


Offline Brian Rupnow

  • Full Member
  • *****
  • Posts: 7575
  • Barrie, Ontario Canada
Re: Double acting Double cylinder Oscillator
« Reply #5 on: May 24, 2018, 04:50:19 PM »
Thanks Jason--I spent about 4 hours cruising the internet looking for that one, but all I could find were pictures of  "Double Tangye" engines.

Online Jo

  • Administrator
  • Full Member
  • *****
  • Posts: 15295
  • Hampshire, england.
Re: Double acting Double cylinder Oscillator
« Reply #6 on: May 24, 2018, 05:10:23 PM »
but made to look like castings.

 :lolb:
Enjoyment is more important than achievement.

Offline Jasonb

  • Full Member
  • *****
  • Posts: 9467
  • Surrey, UK
Re: Double acting Double cylinder Oscillator
« Reply #7 on: May 24, 2018, 05:23:28 PM »
Thanks Jason--I spent about 4 hours cruising the internet looking for that one, but all I could find were pictures of  "Double Tangye" engines.

That's the problem with castings the same old thing crops up again and again, if you want something a bit more original and exclusive you just gota do it yourself.

That little single oscillator I did at Christmas is basically one half you your twin.

Online Jo

  • Administrator
  • Full Member
  • *****
  • Posts: 15295
  • Hampshire, england.
Re: Double acting Double cylinder Oscillator
« Reply #8 on: May 24, 2018, 06:09:02 PM »
Thanks Jason--I spent about 4 hours cruising the internet looking for that one, but all I could find were pictures of  "Double Tangye" engines.

That's the problem with castings the same old thing crops up again and again, if you want something a bit more original and exclusive you just gota do it yourself.

Like a Le Blond 60 engine  ::)

Jo
Enjoyment is more important than achievement.

Offline Alyn Foundry

  • Full Member
  • ****
  • Posts: 1653
  • North Wales, Great Britain.
Re: Double acting Double cylinder Oscillator
« Reply #9 on: May 24, 2018, 06:15:58 PM »
Le Blonde....

Who mentioned Le Blonde?      :Love:

Offline Brian Rupnow

  • Full Member
  • *****
  • Posts: 7575
  • Barrie, Ontario Canada
Re: Double acting Double cylinder Oscillator
« Reply #10 on: May 24, 2018, 06:23:34 PM »
I like blondes---

Offline Alyn Foundry

  • Full Member
  • ****
  • Posts: 1653
  • North Wales, Great Britain.
Re: Double acting Double cylinder Oscillator
« Reply #11 on: May 24, 2018, 06:34:20 PM »
I love mine!!

Offline Jasonb

  • Full Member
  • *****
  • Posts: 9467
  • Surrey, UK
Re: Double acting Double cylinder Oscillator
« Reply #12 on: May 24, 2018, 06:36:31 PM »

Like a Le Blond 60 engine  ::)

Jo

It's got the look of the Morton M5 about it or vice versa :)

Offline b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 13860
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: Double acting Double cylinder Oscillator
« Reply #13 on: May 24, 2018, 06:38:57 PM »
Another nice project Brian. I didn't figure it would be long before something caught your eye. Looking forward to it.

Bill

Offline Brian Rupnow

  • Full Member
  • *****
  • Posts: 7575
  • Barrie, Ontario Canada
Re: Double acting Double cylinder Oscillator
« Reply #14 on: May 24, 2018, 06:55:43 PM »
If I make the spacer transparent, you can see the 1/4" diameter pivot that is attached to the cylinder and passes thru a 1/4" hole in the angle. A stiff little compression spring and a 1/4" nylock nut ensures that the "face" of the cylinder body is held tightly against the face of the angle to avoid pressure loss, but still lets the cylinder pivot.

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal