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A6Intruderman · 02-20-2012, 05:38 PM

Actually this is just a matter of curiosity for me. I've been wondering about the differences between a heli with a flybar and a flybarless setup. Is one inherently better than the other? What are the pros and cons for each? Sorry to sound like a total dummy!

newbheliusr · 02-20-2012, 05:52 PM

A flybarred heli uses a single axis gyro for tail only. They are less stable than the FBL counterparts. IMO harder to setup cause you have to deal with swash mix, sub trim and travel adjust just to level the swash and set your collective and cyclic ranges.

A FBL heli uses a 3 axis gyro. Tail, roll, and pitch gyros control the servos. On a fbl setup all the setup of the servos, swash level are all done in the FBL controller.

Am sure others can explain it better, but in general FBL is easier to setup and fly.

tomd27858 · 02-20-2012, 09:08 PM

Quote:

Originally Posted by newbheliusr

A flybarred heli uses a single axis gyro for tail only. They are less stable than the FBL counterparts. IMO harder to setup cause you have to deal with swash mix, sub trim and travel adjust just to level the swash and set your collective and cyclic ranges.

A FBL heli uses a 3 axis gyro. Tail, roll, and pitch gyros control the servos. On a fbl setup all the setup of the servos, swash level are all done in the FBL controller.

Am sure others can explain it better, but in general FBL is easier to setup and fly.

well said Newb

A6Intruderman · 02-20-2012, 09:23 PM

So on an FBL, using a "virtual flybar" that I have heard mentioned functions as the triple gyro? I'm sorry for asking so many dumb questions, but I just want to make sure I have everything straight in my mind.

Wolfpackin · 02-20-2012, 09:57 PM

A flybar is a mechanical stabilization system, a FBL system is an electronic stabilization system.

The FBL system corrects unintended movement, movement caused by outside influences, of the heli in the AIL and ELE direction as well as tail yaw.

So if wind blows the heli left/right or fwd/back the FBL system corrects that and essentially holds the position.

FBL is an active system that can make corrections by sensing movement and sending corrective signals to the servos.
A flybar is a passive system that just adds stability to the inherently unstable heli.

A FBL system is essentially a virtual/electronic flybar.
Or at least they attempt to do the same job, but the FBL system does it better than the physical flybar.

RUN4COVER · 02-20-2012, 10:11 PM

Secondary to the well stated points listed above is the FBL advantage given for better flights in the wind and also, to a lesser degree, less draw on batteries for a bit longer flight times.

R4C

A6Intruderman · 02-22-2012, 09:36 AM

Thanks for all the help on this. You've all explained things well

2001rotax800 · 02-24-2012, 09:00 PM

Would it be correct ot say FBL are easier to fly due to the electonic satbilization? Or just a different bird?

02-20-2012, 05:38 PM	#1 (permalink)
A6Intruderman Registered Users Join Date: Jan 2012	Another newbie question Actually this is just a matter of curiosity for me. I've been wondering about the differences between a heli with a flybar and a flybarless setup. Is one inherently better than the other? What are the pros and cons for each? Sorry to sound like a total dummy! __________________ Proper Prior Planning Prevents Poor Performance AMA 975652

02-20-2012, 09:23 PM	#4 (permalink)
A6Intruderman Registered Users Thread Starter Join Date: Jan 2012	So on an FBL, using a "virtual flybar" that I have heard mentioned functions as the triple gyro? I'm sorry for asking so many dumb questions, but I just want to make sure I have everything straight in my mind. __________________ Proper Prior Planning Prevents Poor Performance AMA 975652

02-20-2012, 09:57 PM	#5 (permalink)
Wolfpackin HF Support My HF Map location Join Date: Nov 2007	A flybar is a mechanical stabilization system, a FBL system is an electronic stabilization system. The FBL system corrects unintended movement, movement caused by outside influences, of the heli in the AIL and ELE direction as well as tail yaw. So if wind blows the heli left/right or fwd/back the FBL system corrects that and essentially holds the position. FBL is an active system that can make corrections by sensing movement and sending corrective signals to the servos. A flybar is a passive system that just adds stability to the inherently unstable heli. A FBL system is essentially a virtual/electronic flybar. Or at least they attempt to do the same job, but the FBL system does it better than the physical flybar. __________________ Jonathan Livingston Helicopter Blade 400: E-flite 420H/35X ESC, AR6100e, HS65HB x 3, G401B/DS290G. (Ret.) CopterX 450AE V2: 430XL/35X ESC, AR6100, HS65HB x 3, LTG2100T/HSG-5084MG. T-Rex 550E V1 Classic Flybar: 600MX/BL70G, AR6200, DS610 x 3, Quark/DS650, 16t/520mm blades.

02-22-2012, 09:36 AM	#7 (permalink)
A6Intruderman Registered Users Thread Starter Join Date: Jan 2012	Thanks for all the help on this. You've all explained things well __________________ Proper Prior Planning Prevents Poor Performance AMA 975652

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02-20-2012, 05:52 PM	#2 (permalink)
newbheliusr Registered Users Join Date: Apr 2011	A flybarred heli uses a single axis gyro for tail only. They are less stable than the FBL counterparts. IMO harder to setup cause you have to deal with swash mix, sub trim and travel adjust just to level the swash and set your collective and cyclic ranges. A FBL heli uses a 3 axis gyro. Tail, roll, and pitch gyros control the servos. On a fbl setup all the setup of the servos, swash level are all done in the FBL controller. Am sure others can explain it better, but in general FBL is easier to setup and fly.

02-20-2012, 10:11 PM	#6 (permalink)
RUN4COVER Registered Users My HF Map location Join Date: Jan 2008	Secondary to the well stated points listed above is the FBL advantage given for better flights in the wind and also, to a lesser degree, less draw on batteries for a bit longer flight times. R4C

02-24-2012, 09:00 PM	#8 (permalink)
2001rotax800 Registered Users Join Date: Dec 2011	Would it be correct ot say FBL are easier to fly due to the electonic satbilization? Or just a different bird?

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