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HelicopterMiniature Aircraft Whiplash & Fury 55 › Can someone outline the procedure for converting a Fury to FBL?
01-15-2011 12:36 AM  7 years agoPost 21
fastflyer20

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N. Tonawanda, NY

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Justin, thanks, I never knew why. Now it makes sense and it is easy to to figure out for any heli.

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01-15-2011 08:40 PM  7 years agoPost 22
IYKIST

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London united kingdom

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Thanks for the info, it is always good to ask or you might never know, so what are the advantages of having a mixing arm on the main grip like on the vibe fbl head.

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01-15-2011 11:06 PM  7 years agoPost 23
Justin Stuart (RIP)

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Plano, Texas

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Putting mixing arms on the head to reduce the mechanical advantage works fine. I think the advantage is that you make the head more compact. You can do a similar conversion with the MinAir head. I think Kasama was the first to do that. But it is more complicated than to have the single rod from the swash to the blade grip.

I guess the main advantage of using such a setup is that it is more adjustable.

There are many ways to make a flybarless head, but what matters most is that you don't have too much mechanical advantage. Too much mechanical advantage makes the helicopter bob around a lot. It makes it no fun to fly.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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01-15-2011 11:06 PM  7 years agoPost 24
TomC

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Gold Coast, Queensland, Australia

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Seems to me that JR produce 2 FBL head designs;

This one has the mixers;

http://www.readyheli.com/JRP996405-...50_p_37122.html

This one is the more common direct head linkage;

http://www.readyheli.com/JRP996409-...0E_p_37123.html

Personally I don't see any advantages of the mixer lever fbl system. Seems to me that more links means more potential slop. Also, I have heard that these linkages can bind on large collective pitch endpoints.

Another point on these fbl conversions is that you generally need to bring in the servo arm lengths of your cyclic servos in order to improve their resolution. Most fbl system makers (eg. V-bar) will usually recommend servo arm lengths. Typically, you need to bring them in by at ~30%.

Cheers,
TomC

Nqx,Mcpx-BL,300x,450x,500x,550x
Ion-x, 10s ,SS
TT X50E 10s, HC3-Sx

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01-15-2011 11:10 PM  7 years agoPost 25
Justin Stuart (RIP)

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Plano, Texas

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Typically, you need to bring them in by at ~30%.
Definitely. On a .90 sized helicopter, 17mm seems to be ideal for a single servo arm (like on a MinAir Stratus) while 11mm works ideal for a push-pull setup (like on my Aurora).

Avant RC
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01-15-2011 11:19 PM  7 years agoPost 26
TomC

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Gold Coast, Queensland, Australia

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On my fbl MA Ion-x I found I finally had to bring the cyclic servo arm length down to ~13mm (from stock 19mm) to get the best fbl system performance. I'm pretty sure that MrMel also found he had to do the same with his FBL E-stratus.

Cheers,
TomC

Nqx,Mcpx-BL,300x,450x,500x,550x
Ion-x, 10s ,SS
TT X50E 10s, HC3-Sx

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01-27-2011 03:33 AM  7 years agoPost 27
puma1824

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Maryland, USA

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OK the easiest way...buy one made by MA for your MA 90 heli

More info:
https://rc.runryder.com/helicopter/t628812p1/

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02-08-2011 05:20 AM  7 years agoPost 28
slickporsche

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American/Philippines

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Justin Stuart
You have gone flybarless and it looks really clean, good job. DId you do any flight testing on other setups to arrive at this one, or how did you determine to do it this way?

Now that you are FBL, what have you gained. In your opinion please. Have you tried it without assistance? I have also been wondering how much servo torque is required to resist feedback from the blades.

My old GMP Legend flew great as a FBL, but maybe too responsive for a training situation. It was so long ago I can't even remember the setup I used. LOL

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02-14-2011 11:47 PM  7 years agoPost 29
HeliNerd

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Navarre, FL

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Is there any way someone could post pictures of the bell-mixer conversion??? I'd like to do it as cheap as possible for now. Going to run the BeastX on my stratus. Thanks!

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HelicopterMiniature Aircraft Whiplash & Fury 55 › Can someone outline the procedure for converting a Fury to FBL?
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