Author Topic: 2 1/2 pound engine - Warnnig, lots of pictures!  (Read 12865 times)

Offline CallMeAl

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2 1/2 pound engine - Warnnig, lots of pictures!
« on: August 11, 2009, 12:17:44 AM »
Hello everyone,

I started this engine over a year ago and am now just finally getting around to getting it going. I would like to blame many things for my rate of progress, but it just comes down to procrastination!  Their always seems to be something else to work on or fix.

I posted some of these pictures on another forum, but to refresh your memory I'm re-posting them here since as I said it's been over a year ago I started this thing.  The whole idea was to use a 2 1/2 pound weight from a barbell that I found at a scrap yard and design an engine around it.

I started with a wooden pattern for the base:

 

I cast that in aluminum:

 

Made a few of the parts - crank axle, counter weight, cylinder, piston, and rod:

 

Here is where I got stuck and put it aside till a couple of week ends ago.  I got tired of looking at it lying dormant at the back of my bench so finally took a couple of days figure out the valve and valve train and got it working!!









It's funny how you put things off..  This has turned out to be a very fun project and it is satisfying to see it running after all this time.  It turned out better that I planned - even though I made it up as I went along. ::)

Here it is running:

I skin cats my own way!

Offline spuddevans

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #1 on: August 11, 2009, 01:17:22 AM »
Well thats great, well done on getting a runner  :clap: :clap: :clap: :clap:

It ticks over very nicely at a slow speed, and I like the sound of it too.


Tim
Measure with a micrometer, mark with chalk, cut with an axe  -  MI0TME

Offline Stilldrillin

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #2 on: August 11, 2009, 02:23:45 AM »
That`s great Al! It runs very well.  :clap: :clap:

Very well shown too......  :thumbup:

David D
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Still modifying bits of metal... Occasionally, making an improvement!

Offline John Hill

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #3 on: August 11, 2009, 03:22:57 AM »
Great result  Al! :bow:
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Offline raynerd

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #4 on: August 11, 2009, 03:49:58 AM »
Excellent - love the case ally frame.

Chris

Offline Darren

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #5 on: August 11, 2009, 04:08:05 AM »
Wonderful, quite different from the little screamers....well done on getting it going....nice sound too... :clap:
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Offline Gerhard Olivier

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #6 on: August 11, 2009, 04:35:53 AM »
Nice one love the casting
Gerhard
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Offline NorthOf40

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #7 on: August 11, 2009, 06:16:09 AM »
Sweet :thumbup:
Jim
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Offline CrewCab

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #8 on: August 11, 2009, 06:59:24 AM »
Lovely Job Al  :thumbup:

CC

Offline NickG

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #9 on: August 11, 2009, 07:33:58 AM »
Nice 1, can't see the video here but will do later! Great stuff.
Location: County Durham (North East England)

Offline CallMeAl

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #10 on: August 11, 2009, 10:35:10 PM »
Thanks everyone! It looks like the UK and her former related countries all well represented in this group! :wave:

I appreciate all your comments.  I have enjoyed and marveled at he projects that the members of this group have displayed here.  It's nice to be able show something and get favorable comments.
I skin cats my own way!

Offline Bernd

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #11 on: August 12, 2009, 08:48:19 AM »
Nice engine Al. I think you'd get first prize for a "the slowest running engine".

Your own design?

I was amazed at how well balanced it is when at a higher speed. You didn't have it glued to the table did ya?  :lol:

Hope to see more projects from you here.

Bernd
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Offline sbwhart

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #12 on: August 12, 2009, 11:38:51 AM »
Great job Al:- Runs very sweet.
 
:clap: :clap: :clap: :clap: :clap:

Thanks for showing

Stew
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Offline Brass_Machine

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #13 on: August 12, 2009, 01:19:32 PM »
Nice! Nice job on the casting too!

 :clap: :clap: :clap:

Eric
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Offline NickG

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #14 on: August 12, 2009, 05:07:10 PM »
Love the motion, what drives the valve rod is it an eccentric and strap? The casting is brilliant.  :thumbup:

Nick
Location: County Durham (North East England)

Offline CallMeAl

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #15 on: August 15, 2009, 12:08:52 PM »
Thanks everyone for the nice comments.

Nice one love the casting
Gerhard

The main reason I put together my little foundry was to attempt to make engine castings.  This is the third one I've done and the most elaborate.

Nice engine Al. I think you'd get first prize for a "the slowest running engine".

Your own design?

I was amazed at how well balanced it is when at a higher speed. You didn't have it glued to the table did ya?  :lol:

Hope to see more projects from you here.

Bernd


Yes, I like bigger, slow running engines.  I like to see all the pieces moving around.  The little bitty blurry buzzers are very impressive with speed and skill it took to build them, but my dim eyesight and clumsy fingers keep me from attempting to build anything that small.  This is my own design.  I am trying to do things a little different and like to see if I can figure out how accomplish the design.  Not totally original by any means, just my take on others ideas.  It makes it more interesting that way! 

Love the motion, what drives the valve rod is it an eccentric and strap?
Nick

The valve rod is driven by an eccentric.  I wanted try a "teeter tooter" arrangement on the valve rod just for the fun of it.  I've seen it done on hit n miss engines and was intrigued enough to apply it to this "steam" model engine.  I don't think I've seen done like this before, but I haven't seen them all!  Figuring out the stroke on the eccentric was the most difficult part due to the unequal length of the arms from the pivot point of the valve rod.
I skin cats my own way!

Offline NickG

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Re: 2 1/2 pound engine - Warnnig, lots of pictures!
« Reply #16 on: August 15, 2009, 12:17:26 PM »
I haven't seen it done like that either. As you say on ic engines and flame gulpers but usually with cam instead of eccentric. Very unique. Great stuff.  :thumbup:
Location: County Durham (North East England)