I recieved a fan from Maryland Machine a couple of days ago for my Fury and let me tell you..... It is by far the easiest install that I have done on any model I have owned, Raptor 30, Voyager 50, Vigor CS, Tempest and now the Fury.
The holes are already drilled perfect for the governor magnets.
No collets are used. You heat the fan in the over for 15 minutes and utilizing the woodruf key with the motor you just slide it over the crank. Install the washer, tighten the nut 1/4 turn after it contacts the fan and you are done. No need to dial indicate, I checked it just to see but it was .001 on the first try. No need to get crazy torque on the nut so it wont back off since the woodruff key is the drive spline along with the friction when the fan cools off.
One word for it..... SWEETTTTTT!!!!!
He has an add on the home page at the bottom. He will soon be offering them for the trex 600 and some others.
In God we trust, everyone else we monitor.