HEAVY METAL
When adding heavy metal to crankshafts, you always want a nice clean installation. I start with a slightly heavier slug than required and machine the center of the tungsten like a barbell to bring the crank into balance, instead of running it short in the hole or drilling the counterweight. This works great to facilitate a “No hole in the bobweight” balance job If requested. On some pieces, I’ll add some knurling to help hold retaining compound and provide more interference and greater press with the reduced area.

Ron Flood
Cedar Machine
North Branch, MN
MARCH, 2021