Completed connecting rods and retainers.The retainers, made of full hard C-350 maraging steel are a .4530 OD (.4218 in relief area) & .3593 ID. Tensile strength is 350,000 p/si at 60 rockwell (Rc). Weights of the parts are; retainer-.8gms; 16 rollers-1.4 gms; steel rod-11.9 gms; wrist pin-5.0 gms; piston-15.6 gms. These roller rods & retainers have been throughly tested at 32,000+ rpm with no failures, using 6 to 8 % oil. Many test runs of 2+ minutes at wide open throttle were made. The assembly also showed very little wear during these dyno tests. The pictured retainers have one roller in each window. This was changed to two rollers in each window for increased wear resistance & load carrying ability. There are no friction or heat problems with the two rollers touching one another at high rpm. ALL "UNCAGED" HIGH SPEED ROLLER ASSEMBLIES WILL DEVELOPE A HIGH HELIX ANGLE TO THE AXIS OF ROTATION THAT IS DIRECTLY PROPORTIONAL TO THE ROTATIONAL SPEED! THIS HELIX ANGLE CAUSES FRICTION, HIGH HEAT & EVENTUAL FAILURE!
