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Old 04-11-2007 | 10:07 AM
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StrykerIncognito
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From: Mobile, AL
Default RE: Looking for AXE CP set-up tips


Some of the information might be more general n00bie information, heck I'm still a n00b as it is.. but anyway...

If you ever need to adjust the zero pitch (neutral for the sake of relation to engagement of thrust for lift) of the blades, before flight or after repair:

Disconnect one of the main rotor motor power leads, and disconect the Tail Rotor's Ultra Deans connector, power up your radio, and then plug in the battery to the Axe. With the throttle already down, flip the 'Idle up' switch up and down, the pitch will change, and then attempt to zero. At Zero pitch the main rotor blades (and the flybar paddles for that matter) should be on a parallel plane/level to the ground. (You'll notice that the main blades can rotate counter and clock-wise, but they do that in tandem). After you idle up and down, rotate the blades so one of them is level with the ground/table, and look from the tip of that blade down through it at the other blade. If either of the blades need pitch adjustment, it should be reasonably obvious. Adjust the blade grip linkages in and out by twisting them 180 degrees at a time until both blades seem reasonably level.

Check the tracking of the blades at this point; if you haven't already marked your blades, now would be a good time.

Controversial Mod:

Besides leveling the swashplate, I had read previously that another first time flyer had brought his servo linkages in about two holes closer to the center. This reduces overall arm throw and essentially makes the copter less sensitive to twitchy input and overzealous response from the Tx. The problem lies in the knowledge that you are removing the 90 degree specification of the server arm to linkage setup.

I have done this to my Axe CP with no known harm to either the servos, or the bird itself. It flies fine. For a beginner it seems like a fine thing to do. You'll need to widen out the holes in the servo arm to accept the linkages farther in, and may have to adjust the lengths of the linkages to brig the swash back to level (which then declares the pitch of the main blades). From my review it adds about a milimeter of linkage length. If you do this mod you WILL need to go through the aforementioned pitch adjustment, but believe me, the first time you crash your Heli good, you'll likely need to know the above process anyway after repair.

Good luck!