Brian--

Interesting on what ya find out about the differences in the two. However, I'am betting that the gears are the same between the two. It seems the one ya got is a digital servo, and the S75's are not. I bet that's the only diff. (Guessing) To keep manufacturing costs down for horizon, it looks like they might have left the gears the same, but differences in the electronics part. Let us know what ya find out...

Also here is a little better explanation of your servo placement:


Now this is a CRITICAL step.

1. Turn on transmitter.

2. Plug in the battery on the helicopter.

3. Wait for the gyro to initialize, and the servos to center.

4. Unplug the battery on the helicopter.

5. Turn off the transmitter.

The main reason for doing this is so that the servos are centered before making adjustments on the helicopter in the next section.

If at anytime you move a servo arm. REDO the above centering procedures. If you move onto the next section without doing this, the helicopter will not be set up correctly.


Good luck with your new adventures,


-- Jeff