Originally Posted by KNOT-RIGHT

here is the difference in the first gp rotors.
the first is the 13 rotor the second is the 703 rotor. notice the center ring has bigger openings to aid in cooling and the vanes at the end have more holes for cooling. i left the six bolts in the first one you are seeing the back sides of them.

Originally Posted by trouble maker ll

What would happen if that blade came off at 26000 rpm.....in a helo it falls from the sky like a rock....iñ the skater you could float while help comes and drink a scotch