Wheelhaus
Veteran
Location: Denver
| this is the same thing I posted on RCGroups:
Increased stability around center. The gyros make small corrections that the eye cannot detect. Since the flybar limitations are removed, the swash has roughly twice the effective throw, so the head can utilize more substantial cyclic deflections for faster flip/roll rates or massive collective ranges for incredible pop maneuvers.
More finite accuracy of tunability far beyond any mechanical head adjustments. You think your flybar'd heli flies like it's on rails? You have no idea.
Less drag so the blades perform more accurately and there's less lost in translation. The linkages that connect to the flybar mechanism can develop lots of slop and cause strange interactions and unintended movement simply from flex and movement. A V-Bar head uses direct swash-grip links, there's NO slop and NO delay (unless a delay or softness has been so programmed).
The V-Stabi in particular has something no other currently available system does, the dual pitot-tubed air pressure sensor. Normally, the advancing blade generates excessive lift, and gyroscopic procession means that blades effect is felt 90° later on a standard 2-blade head. So, this makes the heli very pitchy, even with a single gyro on the elevator axis. The air sensor mimics the effect of the flybar in FFF. In FFF the flybar disc is being blown "downward" due to the head's angle of attack into the oncoming wind. This prevents the pitchyness that would otherwise be present. The air sensor is fully adjustable and is proportional to the pressure difference front and aft. The higher pressure that is felt, the more the swashplate is tilted into that direction, making the blades tilt into the wind much the same way the flybar forces the blades to tilt into the wind to maintain stability.
At first I didn't want the air sensor and thought it was useless until I installed. Now 100% full-pitch high speed passes are really fun and the heli is still smooth and predictable.
My Swift is FAST in FFF and extremely smooth, it shows zero signs of pitchyness far better than even heavy paddles, yet it still flips and rolls super quickly and feels very nimble and accurate much like lightweight paddles feel without sacrificing hover stability or handling in windy conditions.
This is from Eco8gator on RCG, all points I also agree with:
Advantages:
| Quote |
| *Less Parts(potentially less slop)
*Less Drag
*Can achieve a higher cyclic rate(than you could with flybar) but have a more stable center
*Less Weight
*Longer flight times
*Could turn down your HS and still have the same authority you had with a flybar
|
..........
Dave
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for flying w/o the bar
