HEX-4

4 CYLINDER 2-CYCLE

 

Pat. # 7,331,324

James

Engine

E-mail: info@jamesengine.com

The HEX-4 was designed after the HEX-2 with some modifications.

Some differences from the HEX-2:

 Crankshaft uses 1/2 TGP (Turned Ground Polished) rather than the 5/8 TGP for the HEX-2.

 Uses 1/2 reamer which is easier to find and less expensive than the 5/8 reamer.

 An alternative method to build the engine uses sleeve bearings rather than cutting grooves for the connecting rod clearance.

 Requires the ability to cut groves internally of the crankshaft using a boring bar. Tolerances for the groves are very large. This is not required if using the bearing sleeves.

 The 17/32-40 Tap is practically a must unless you can cut the threads using a 4-jaw chuck. It can be done but requires more time and setup.

 The HEX-4 uses an intake manifold.

 

HEX-4 How it works.

HEX-4 Exploded View.

 

 

 

 

 

 

 

 

HEX-4.

7,200 RPM with an 8x6 Prop.

Click here for a video.

Pat. # 7,331,324

James

Engine