Jump to content

Help with engine identification please


Recommended Posts

I’ve just come across this engine which was made by a family friend. He has asked me to try and find the identification of this model as he can’t remember and has lost the documents. I believe it was from a engineering in miniature magazine issue.

Any help would be appreciated.image.jpg.a5d8d06c4680ad340a3be6f6884ef9c0.jpgimage.jpg.92150763a787aa822907247e2101b116.jpg

Link to post
Share on other sites

It appears to be a 3 cylinder radial engine. The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders "radiate" outward from a central crankcase like the spokes of a wheel. It resembles a stylized star when viewed from the front. They're also known as 'Star Engines'. The radial configuration was commonly used for aircraft engines before gas turbine engines became predominant. They are always configured to have an odd number of cylinders, i.e. 3, 5, 7, 9 etc.

 

Follow the link - How do radial engines work ? – MechStuff

 

Davey

Edited by Davey
More information added.
  • Thanks 1
Link to post
Share on other sites

I think it’s an air-powered radial, operating like a compressor in reverse.

 

I can’t find a model 3 cylinder one on-line, but here is a 5 cylinder 


Trying to fathom how the OP’s one works, I think it must use the crankcase as the exhaust chamber, and probably has a slot milled part-way up the bore, so that the cylinder is exhausted a bit like a two-stroke, but I’m not totally sure. Also, I think there must be a ported rotary valve on the crankshaft to deal with inlet.

 

Edit: here’s one that uses flats machined on the crankshaft as rotary valves https://www.linkedin.com/pulse/three-cylinder-radial-steam-engine-brian-swan I don’t think the OP’s is quite the same in its workings, but it may be.

 

 

Edited by Nearholmer
  • Agree 1
  • Thanks 1
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

×
×
  • Create New...