Arnold's take on Elmer's #5 Geared Engine

[Stuart]

Fine piece of work ther Arnold

Just about made my eyeballs rotate to keep with the motion

Had a look in Mr Mounts book he has a type of engine that is of the same ilk

May be  strokes beard Santa would nip round to see Jayne at Polly and pick up a set of drawings or maybe a casting set to ad to my pile .

Bought Linda a gold watch last year so if must be my turn this time because I have been a good boy not touched a drop ( because I cannot due to docs meds )
Stuart

[arnoldb]

Thanks All 

If someone can tell me when and where the Namibian Model Engineering Exhibition is, I'll happily attend without winning a prize...  In fact, if I can find a handful of Namibian model engineers to join in, I'd happily try and organize the inaugural event!

So it's a sort of inverted version of the 'Sun and Planet' crank arrangement?

Roger, yes, sort of.  It was just another way for engineers to get past the patents that (if I'm not mistaken) James Watt held on the ordinary crank arrangement...

I wasn't happy with the way the engine ran yesterday - it had a loud knock at the end of each stroke, so as mentioned in my last post, I spent some time locating and trying to resolve it. 

The piston rod crank arm was banging against the gear - to resolve that, I made new spacers for the gear that's 0.5mm shorter than the originals.  That cleared up most of the problem, so I settled for that, cleaned the engine up a bit, and took some last photos and a video:















<a href="https://www.youtube.com/watch?v=-uboDzJwpt8" target="_blank">http://www.youtube.com/watch?v=-uboDzJwpt8</a>


Thanks very much everyone who followed along - this was a fun build, and enormously gratifying.  Now it's time to toss a couple of possibilities in the hat, and decide on the next build...

Kind regards, Arnold

[b.lindsey]

Simply beautiful Arnold!!  Thanks for the wonderful build log too. May have to add this one to the list for future builds.

Bill

[vcutajar]

That is quite an improvement.  Did you find a place where to display it?

Vince

[Nicolas]

Really enjoyed this build and as usual I picked up a few new tips and tricks

Now it's time to toss a couple of possibilities in the hat, and decide on the next build...

Looking forward to that

Nicolas

[Jo]

  Nice, runs a treat  .

Jo

[gjhelst]

Hello Arnold,

A very beautiful engine!
Thanks for your excellent build log (and many others before).
I've build quite a few of Elmer's' engines, but I never considered this one.
Until now, that is.

GertJan

[arnoldb]

Thank you all for the responses 

Did you find a place where to display it?

For now it's crowded together with the rest of my engines on the buffet in the living room...  I definitely need to make a plan to make a display cabinet.

Kind regards, Arnold

[vascon2196]

Nice!!!

[ChipMaker]

What a fantastic subject and thread on building this great little geared engine by Elmer Verburg!  I have the plans, but without your photos and video details on building this engine, I would have a problem being a successful builder.  I do not have the shop tools, knowledge and experience to do a "professional" job, but I am doing okay so far on this one.  My lathes are, Atlas 6", Unimat, Sherline, and Sherline mill.  This engine for me, will be about my 3rd steam engine, the other two, are very simple "wobbler" types.  For this engine though, I "bit the bullet" to speak, and bought both of the gears (ouch!) from Boston Gear as I would not have been able to make them or make them well enough.  I too, will modify the original design just a little bit to work with the materials that I already have on hand.  I decided to build this engine when I saw it on the Internet, with it's interesting gears!  Thanks again Arnold for your presentation on this neat engine!  Regards from Michigan, Karl T.

[fatboyfinn]

Internal gear is available from HPC Gears Chesterfield in the UK at about £26 and the pinion at about £13  in en32 I think.
48dp 20 degree.Drawings on their Web site.
Best Wishes
Andy