Gary Hadden Engines, Patterns,

Launch, Launch Engine and Boiler, Uniflow Engines

Contact information: jhadden1@earthlink.net

 

Engines and Patterns

    
     
 

 

Gary has made patterns for both a 3” and 2” bore.  The original castings were aluminum with pressed in cast iron cylinder liners.

Gary Hadden's Steam Engines

Gary Hadden has designed and made patterns for some very nice small vehicle or launch engines in the 10-25 hp range.  These are the typical Locomobile or Stanley type of a layout with a 90 degree crank and a double acting two cylinder engine.  This makes them both self starting and impossible to balance at over 1000 rpm. 

     

The heads use B&S poppet valves and Chevrolet hydraulic lifters.  This makes for a compact engine with low clearance volume.
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
 

Three dimensional cam for infinite cutoff control forwards and backwards.  The one disadvantage of this three-dimensional cam design is point contact with the cam follower.  This can be improved at any time with engineering development work.  The idea is basically very good.  There is a chain and sprocket drive from the crankshaft up to the cam so that the camshaft is close to the heads.
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
Gary Hadden's Steam Engines  

 
 

The genius of this design is that it is a poppet valved uniflow engine, thus being the most efficient engine in present production.  It has a sliding three dimensional cam to give it everything that a person would want in a steam engine.  We are not certain how the point contact of the cam followers on the three dimensional cam will play out. 

     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
     
Gary Hadden's Steam Engines  
 
Because this is a double acting uniflow the piston is quite long and dumbbell shaped.  Gary allows a larger clearance volume in the small vehicle engine than in the launch engine because of condensing in a boat.  Casting kits are now available, December 2013.
     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
   

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(Note: Click on a picture to see a larger view and then use your browser to enlarge it further.)
     
Gary Hadden's Steam Engines  
     
Gary Hadden's Steam Engines  
     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
     
   
     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines
     
    Gary Hadden's Steam Engines
 

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Launch, Launch Boiler and Engine
     
Gary Hadden's Launch Boiler   Gary Hadden's Launch Boiler
   

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Gary Hadden's Launch Boiler   Gary Hadden's Steam Launch
   

Gary Hadden with His Steam Powered Launch
     
Gary Hadden's Steam Engines   Gary Hadden's Steam Engines

Launch Engine
     
Gary Hadden's Steam Engines    
 

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Uniflow Engines
     
Hadden Uniflow Steam Engines   Hadden Uniflow Steam Engines
   
Gary Hadden, Holly, Michigan with his self-designed uniflow steam engines; 2” and 3” bore.  These are double acting uniflow with poppet valves and a very robust frame using six rods.
     
Hadden Uniflow Steam Engines   Views of the 2” and 3” engines, casting kits $1,200 and $1,800 respectively.  These are open framed for marine use.  An automotive use design is also available with more clearance volume provided because of the lack of a good condenser in the auto compared with the boat.
     
Hadden Uniflow Steam Engines   Hadden Uniflow Steam Engines
     
Hadden Uniflow Steam Engines   Hadden Uniflow Steam Engines
     
There is a three-dimensional sliding cam in here and Chevy hydraulic lifters are used to actuate the poppet valves.  This design with the poppet valves cross-wise and in the head provide for minimum clearance volume and steam passage flow, making this a very efficient engine.
     
Hadden Uniflow Engines   Parts of the casting kit which can be obtained in aluminum that uses a cast iron sleeve or in grey iron.  Here the pistons and connecting rod are in aluminum.
     
The engine uses the conventional Stanley style 90 degree crank for self starting.  Rotating balance becomes a problem with this design at higher speeds of above 1500 rpm.   Hadden Uniflow Engines
     
  Ken Helmick (left) and Tom Kimmel (right) providing scale for Hadden’s engines.  These are, in my opinion, the best design available presently with the combination of uniflow, sliding camshaft, and poppet valves.  There may be a weakness in point contact for the cam followers which may need to be addressed if heavy use is contemplated.  A flat in the cam profile would solve that problem where the cam would usually be set.  These are designed for about 200 psi and one could beef up the bearings and rotating parts and increase the power output. 
   

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