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i20sailor
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Joined: 07 Dec 2010
Posts: 6
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 Posted: Tue Dec 07, 2010 8:17 am
Post subject: Walkera 4#6S vs. 4#6V vs. 4#6 Bell |
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I'm new to RC Heli flying. Have been playing around with a co-axial 3 channel. Not real challenging after a bit. Now I would like to upgrade to something more difficult, but not too difficult. Also would like something that can be flown indoors or outdoors in low wind condtions.
So, after a bunch of web research it seems like the Walkera 4#6 could be a good option. But which version?
4#6S, 4#6V or 4#6 bell?
Thanks. |
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tombo242
Extreme 3D
Joined: 04 Nov 2008
Posts: 3636
Location: Santo Estêvão, East Algarve, Portugal. 76, but still feels 18.
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Posted: Tue Dec 07, 2010 6:11 pm
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Choice has to be yours i20sailor, but mine would be the 3 axis gyro 4#6S.
Tom.
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admiral
Extreme 3D
Joined: 20 Mar 2009
Posts: 695
Location: Brisbane, Australia
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Posted: Tue Dec 07, 2010 7:34 pm
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Hi i20sailor,
I'm with Tombo on this one the 4#6S has a flybar and 3 way gyro system, has to be more stable for the beginner, kind of Belt & Braces
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i20sailor
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Joined: 07 Dec 2010
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Posted: Tue Dec 07, 2010 7:43 pm
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Thanks guys.
Some websites claim that the bell rotor set-up makes the heli more stable, but it was not clear how it would compare to the 3 axis gyro with a standard flybar.
What would happen if one were to combine the 3 axis gyro with the Bell rotor set-up? Overkill?
Claus |
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tombo242
Extreme 3D
Joined: 04 Nov 2008
Posts: 3636
Location: Santo Estêvão, East Algarve, Portugal. 76, but still feels 18.
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Posted: Wed Dec 08, 2010 7:35 am
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Hi i20sailor,
As the 3 axis gyro is replacing the Hiller mixing of the conventional Bell Hiller mixed head, to add a flybar would cause excessive damping. As you correctly say
The Bell head alone would require great skill to fly unaided as there is no stabilisation, the swash links operate directly on the blades. This makes for a very fast response, used on real helicopters, at model size too fast for most humans. It is used on model heads with more than 2 blades as then a Hiller flybar is not possible.
Tom.
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i20sailor
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Posted: Wed Dec 08, 2010 9:57 am
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Thanks Tom, great info.
OK, next question: 4#6S or V120D01? Seems like there is some that feel that the 120D01 is more stable to fly than the 4#6S, other seem to think not. Maybe I don't understand the theory correctly, but it ssems like the 3 axis gyro allows the removal of the flybars, so if you take a heli with flybars and add the 3 axis gyro, shouldn't this be the most stable and easy to fly platform? |
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tombo242
Extreme 3D
Joined: 04 Nov 2008
Posts: 3636
Location: Santo Estêvão, East Algarve, Portugal. 76, but still feels 18.
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Posted: Thu Dec 09, 2010 12:19 am
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Only if you replace the Bell-Hiller head with a Bell head. The links with the 3 axis gyro must go straight to the blades and not the flybar as in the Hiller system. Modification of the head itself is beyond any home DIY.
Tom.
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i20sailor
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Joined: 07 Dec 2010
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Posted: Thu Dec 09, 2010 12:31 am
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| tombo242 wrote: | Only if you replace the Bell-Hiller head with a Bell head. The links with the 3 axis gyro must go straight to the blades and not the flybar as in the Hiller system. Modification of the head itself is beyond any home DIY.
Tom. |
So, which heli would be better for someone looking to take the next step from co-axial? 4#6S or V120D01. From what I can tell, the main differance is the fly-bar vs. no fly-bar.
Thanks,
Claus |
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