My smallist engine

[DavesWimshurst]

Been playing with my camera and thought others might like to see an engine under steam. It's the thimble engine design by J Senft. I deviated from the original design by spinning my own thimble out of copper and changed the piston material from stainless steel to brass. I couldn't make a number 78 drill (0.016 inch) go through ss late at night!



Dave

 

[Maryak]

Dave,

Neat Sweet and petite. :bow: :bow: :bow:

Best Regards
Bob

 

[stevehuckss396]

That was awesome!!!

What was the bore and stroke on the little gem? Flywheel diameter?

 

[DavesWimshurst]

Steve,
It's 1/16 inch bore and stroke. The flywheel is 0.25 inch dia. by 0.10 inch thick. I probably should have simulated spokes but my eyes hurt by then. I wound up fashioning drills out of sewing needles. The shafts were bits of needles and small music wire as needed. I made two but one didn't run as well so I usually pass that one around to onlookers while running the good one.
Dave

 

[stevehuckss396]

Steve,
It's 1/16 inch bore and stroke. The flywheel is 0.25 inch dia.

I also built a 1/16 X 1/16 with a 1/4 inch flywheel. I know what you went thru. Very nice job!

 

[wmf138]

Very nice piece

sounds like its going some nice revs any idea how fast

Wayne

 

[zeeprogrammer]

Good grief! I thought it was fly or something and your finger was going to flick it off!

Very nice.

 

[90LX_Notch]

Love it! Aren't the small ones a joy to build. Truth is, I'll bet you got a lot of satisfaction when it ran for the first time. :bow: :bow: :bow: :bow:

 

[rake60]

Nice Work! :bow: :bow: :bow:

Rick

 

[PhillyVa]

Must say your eyes are better that mine.
th_wav Great Job th_wav

Regards

Philly

 

[two dogs]

Wow!
That's impressive!
Elmers Tiny was enough for my eyesight.

Mark

 

[SignalFailure]

Dave, that's ridiculously small!! Well done :bow:

Your next challenge is to build a valve-operated engine of similar size :big: :big: