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Old 05-16-2006 | 02:30 PM
  #3211  
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zooland1
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From: Savannah, GA
Default RE: E-FLIGHT BLADE CP


ORIGINAL: newbladepilot

Regarding the DD tail.

Well I've looked at and studied this for two days now and only one thing will make this work.

The "leading edge of the rotor must rotate up towards the main rotor" thing can't matter. If it does, this set-up will not work.

The pic of the DD tail on the Blade cp repair site clearly shows that with the prop oriented the way it is, it will have to spin leading egde down, away from the main rotor in order to properly move the tail to the left. (as viewed tail toward you)

If this is OK then you don't have to flip the motor mount or reverse the wiring, just put the rotor on the shaft and your done.
If this is not OK then you will need a prop that has the reversed pitch.

The stock rotor propels air from left to right with the tail toward you. It does this with it's leading edge moving up toward the main rotor.

The blades on the new rotor are opposite the stock so for it to propel air from left to right like the stock one, it has to spin in the opposite direction which would be leading edge down away from the main rotor.

So, either some people have found the correct pitch blade or the spin direction doesn't matter as long as it's propelling air from left to right (tail toward you)
I've been studying this thing for about an hour and have come to this conclusion. My setup is not supposed to work. As newblade just said, the rotor is supposed to turn up into the main, or when the rotor is facing forward the leading edge should be on top. Mine is "not". I went through every chopper in G3. Every one of them is correct. Looking from the rear of the chopper, if the rotor is on the right side it rotates CCW. Rotor on the left side CW. Mine rotates CCW on the left side (just as depicted at bladecprepair). This ain't supposed to work. But it does. Just to be kosher, I'm going to flip my motor to the other side and get the rotation in the proper direction. Why take chances that when I start 3D'n I crash simply because of rotor wash. The only thing I can think of is because I'm using such a small rotor, the wash isn't strong enough to have a negative effect.

I have tried to fly a model in the sim that someone created to mimic the blade. This model does have the rotation reversed (I didn't count this in my analysis since someone else created it). It's also extremely difficult to control. Could it be trying to tell me something? Maybe, just maybe, the rotor wash is the reason and the sim dynamics are reacting accordingly.