Jan 23, 2008 - A new engine was bought: Hirth 2704 53 horsepower with reduction drive and modified exhaust. I designed the mounting plate and had it ...
STROJNIK S-2A (N145CE) The Engine Swap by Bob Parker - Baker City, Oregon
This is how she started out: Kawasaki 340 powered .
Her First Engine - Replaced by the Kawasaki 340. 36" Direct Drive Prop - Also Made Dust, Wouldn't Launch
Old Engine: The builder would take an auto tow and once airborne with a little altitude, the S2 would manage to climb OK from there. Not and option I was too crazy about, sort of gets away from the freedom to launch anytime concept.
A new engine was bought: Hirth 2704 53 horsepower with reduction drive and modified exhaust. I designed the mounting plate and had it machined.
The exhaust was modified to fit under the engine inside the fuselage to reduce drag. Tough part was keeping length the same for tuning effect.
This approach would have been WAY easier, but the drag has got to be a drag... .
The Hirth 2704 installed. Talk about your shoehorn job... The bigger engine required changes to the cowling. It has . since been glassed and NACA cooling ducts installed.
Next project is to have a folding prop hub made. The The Barel folding prop on a Southwest Idaho Strojnik. I Ivoprop blades will fit right into this design by Max Barel, like this guys pop-out cooling vents. designer of the Graal Motorglider. .
