Thread: Mini-HowTo V200D01 flies like a co-axial!
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Old Feb 06, 2011, 07:23 PM
HeliGriff is offline
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Mini-HowTo
V200D01 flies like a co-axial!

I'm no expert! In fact, I'm relatively new to this sport. But, a lot of people have asked me how I got my V200D01 to fly like a coaxial. There may be better ways to do it, but here is what I tell people when they ask. (video demo below post #4)

Getting this bird “tamed” is a three-part process with several steps each. If you are experienced, you probably already know how to do most all of this. However, I’ve written the instructions assuming that people want to know everything. I don’t mean to imply that anyone doesn't already know the following.

Before we start, make sure you have done the following “standard” balance procedures.

PART ONE- BALANCE PROCEDURES: mandatory for all RC helicopters.

1. find each rotor blade’s CG (Center of Gravity) and balance each blade to the other.
2. balance the entire rotor head with blades the attached.
3. adjust blade-tracking*
3. balance the heli’s CG

If you need help with the above, visit www.rchelicopterfun.com for all the instructions. It is under “Flight School” on the menu, go to “Day One”. It’s free!

Note* The V200D01 has tiny 1.5mm e-clips on the feathering shaft that runs through the rotor-head. The blade-grips attach to the feathering shaft. If one of these e-clips is missing, you cannot adjust tracking or get the heli to fly stable.

PART TWO- LEVELING PROCEDURE: getting a V200D01 to fly like a co-axial..

Step One- Mechanical:
1. Get into a Hover.
2. Watch what it does.
3. Land.
4. Adjust appropriate linkage.
5. Repeat steps 1-5

Power-on and turn all Cyclic Trims to 50% then power-off. You won’t need Trim anymore! Most of us never use it. We will concenrate on the swashplate level during flight.

Here is an example of what we will be doing next. Procedure: Get into a 10ft hover and see which way the heli wants to drift on its own, Forward or Backwards. To correct, land the heli and adjust the Elevator Servo-to-swash linkage (the servo on the left that points backwards). Adjust the linkage-rod-ends, one turn at a time, until the drift is eliminated. If the heli went backwards on its own, lengthen the rod. If it went forward on its own, shorten it. Continue doing “test hovers” to check the results. When you get close, start making 1/2 turns, 1/4 turns, or 1/8 turns on the linkage-rod-ends until you've acheived the correction. Repeat these steps until your heli is dialed-in. Once your done, twist the ends in opposite directions to eliminate any “slop” in the linkages.

Now that you know how to adjust the linkages, as shown above, do the same process for the other servos linkages. Here is the order that I followed to set up mine.

1. Rudder: If you learned to fly 'tail-in' this will help you to not get disoriented. It's no fun when your heli starts pointing sideways while you are busy trying to keep it level. If the nose points relatively straight-ahead now, skip this step.
2. Forward/Backward: It's also not fun when your heli wants to fly away while you are busy keeping it level. Adjust the Elevator servo to swashplate linkage (in the center just behind the main mast).
3. Banking Right/Left: Now that your heli won't fly away from you and the nose stays pointed straight ahead, its time to adjust sideways drift. Adjust the Aileron servo to swashplate linkage (on the right side of the mast). Shorten if it drifts left, lengthen if it drifts right.

NOTE: My heli does not drift to the left when running it hands-free. That is my personal preference. However, it SHOULD drift left because of its large tail rotor and clockwise rotation of the main rotor. Since I have levelled the swash to eliminate left-drifting, I get a little bit of "Toilet Bowl Effect", but not enough to worry about it. In forward flight, it doesn't matter. The bottom Line is that it is a trade-off. I'd rather have a little TBE and no left-drift. If you prefer a little left-drift and no TBE, that's OKAY because it is aeronautically correct for the V200D01. See post #28


PART THREE- ELECTRONICS: taming the Heli

We use this procedure because the WK2403 TX is not a “computerized” transmitter/receiver. Computerized systems allow you to adjust the Extend (Servo Travel) adjustments through your radio transmitter. However, Gyro settings are still done on the receiver on most models.

1. Adjust Servo Extends
2. Adjust Gyro Sensitivity

The Servo Extend adjustments are what really calms the heli because they reduce the amount of travel that the servos can move. I never had Rudder problems, so mine is still set near the factory settings. However, the Ail/Elev travel needs to be reduced. The Servo-Extend dials (pots) are located on top of the receiver along the left side, assuming you are looking at it from the tail-end of the heli. Look for the one labelled AIL/ELEV. Turning the pot clockwise allows more travel (wild), counter-clockwise reduces travel (tame). Start at 50% and reduce the travel until the heli responds more gracefully.

The Gyro Sensitivity are the three pots along the top edge of the Receiver. When adjusting, make small 10% adjustments. Leave the Rudder gyro Sensitivity set at 50%. If the heli “wobbles” when flying sideways, turn the Aileron gyro sensitivity clockwise until it stops wobbling. If it gets worse, turn it counterclockwise. If the heli “Bobbles” (like a bucking horse) when flying forward or backward, adjust the Elev Gyro pot until it stops. Every heli is different! You cannot look at someone elses V200D01 and set yours to be the same as theirs.

Another tip.. The sticks on your transmitter are adjustable. Leave the left-stick short. Unscrew the top of the RIGHT stick about inch, then screw the bottom half up to it until it is snug. By lengthening the right-stick, the Cyclic control isn’t as sensitive.

One note of extreme importance (one year later): As you begin to have success hovering, flying foward, and simple circuits, begin increasing the agility of the helicopter. As your skills build, the heli will be able to respond to you smoothly, rather than you responding to it. It's important to increase agility as you go. Otherwise, you'll be stuck at a beginner level for a long time because the heli cannot grow with you. At first, you need the heli tamed way down. Later, you'll want it more and more agile.

After you get this heli dialed-in, you will be AMAZED at what it can do! I can take-off from the pad into a hover without touching the right-stick. I can do a full speed fly-by one-inch off the ground. It is so stable, I know exactly what it will do.

***THERE ARE MANY MORE TIPS/PHOTOS/VIDEO THROUGHOUT THIS BLOG*** If any of it is useful, feel free to comment!

I hope this helps!

-HeliGriff
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Last edited by HeliGriff; Nov 01, 2012 at 03:23 PM. Reason: added comment, corrections
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