scorpion 133 rotor speeds

[royden]

Can any one tell me what the main rotor rpm range is on the scorpion 133. I have looked through my documents but a lot of information is missing. I need to know because I want to buy a dual rotor and engine tach and need to know the rotor rpm range.
Thanks a ton
Royden

[animal]

Can any one tell me what the main rotor rpm range is on the scorpion 133. I have looked through my documents but a lot of information is missing. I need to know because I want to buy a dual rotor and engine tach and need to know the rotor rpm range.
Thanks a ton
Royden
Most rotorways turn the blades between 500-525 r.p.m. at 4,200 on the engine.hope that helps ya.