Double Sized 7 Cylinder Radial Engine Kit

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This is an approximately 500 piece kit.  It is cut from 1/4" plywood instead of 1/8" plywood, this builds a approximately 33 inch in diameter 7 cylinder radial engine with moving pistons and valves.  Much bigger and more impressive than the "standard" sized one, but takes about eight times as long for me to make.

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Inspired by the famous engines that powered Lindbergh across the Atlantic and America to victory in WWII, this art-deco styled cutaway is over 32 inches in diameter - large enough to look in most museums and collections.  It is full of authentic working features - including a classic master and slave rod system.  The pistons and valves move accurately enough to be used as teaching aids in a University classroom.  When you spin the prop flange, you can clearly see how a three lobed cam plate operating in 1/6 speed retrograde can distribute valve motion to seven cylinders without missing a stroke.  Comes in a 14 inch by 12 inch by 14 inch box.  Check the assembly manual and videos below to determine if you feel that this kit is within your skill level.  We do not recomend this kit unless you have significant mechanical skill. 

Please note:  The double sized kit has the same instructions as the single sized kit.  Since everything is doubled in size, this should not cause a problem.  However, you should be aware of this before ordering. 

  • 7 Cylinders
  • 3.33 inch bore
  • 4 inch stroke
  • Twin plate 3 lobes cams
  • Trailing Link Valve Lifters
  • A little under 500 parts
  • About 5-25 hour construction time

Important Links:
This kit can only be ordered through the web site if your shipping address is in the lower 48 states in the USA.  If you need shipping outside of the lower 48, please contact us for a custom quote.