The world famous Rimfire

The world's smallest spark plug, available from Morrison & Marvin

 

Rotec Radial Engines

How about a 100 HP seven cylinder radial?

 

Model Engine Builder Magazine

Model Engine Builder Magazine - dedicated to Model IC Engine Builder Enthusiasts

 

Strictly IC Magazine

Strictly I.C. Magazine - Miniature I.C. Engine design and construction in the home shop

 

Ron's Model Engineering and Model IC Engines

Ron's Model Engineering and Model IC Engines