Hi,
The hang angle is the same for both and single rotors. Suspend the dual rotor by the rotor shafts and set the thrust line angle to about -12 degrees.

For dual rotors it's real important to get both rotors running at the same speed on take-off. On the first flight it's best in a light breeze and point it straight into the wind and watch the rotors. But using the rudder you can bring the slower spinning rotor into the wind. Hand launch also works good as you can feel the rotors when they are pulling evenly. On a hand launch, be careful that it doesn't loop as the rotors will be proving a lot of lift. With hand launch tip the gyro up to get the rotors spinning until they start to really pull and then bring the fuselage level and give it light push.

Phil