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HomeRC & PowerAircraftHelicopterFlybarless Rotor Head SystemsOther › Max Voltage for VBAR, SK360?
04-01-2009 07:59 AM  9 years agoPost 1
DEFILER

rrApprentice

Houston - USA, Balad - IRAQ, Kuwait - KWI

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I am still trying to decide which system to use when I convert to FBL however would like to know what the max voltage of both Vbar and SK360 is. This will go into an N9 and 600N both running AR7100R on 2S Lipo and 8717 and BLS351

I only crash due to random planetary intervention

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04-01-2009 08:58 AM  9 years agoPost 2
skint eastwood

rrApprentice

uk

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Skookum is ok to 8.5 Volts

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04-02-2009 08:11 AM  9 years agoPost 3
MrMel

rrProfessor

Gotland

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Vbar max voltage is more then any servo can handle as of today.

i.e. no issue running AR7100's on direct lipo, there is a guide in the user wiki how to do it easy.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

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04-02-2009 08:38 AM  9 years agoPost 4
DEFILER

rrApprentice

Houston - USA, Balad - IRAQ, Kuwait - KWI

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Thanks!!!
Now for some noob education; I want to choose 1 brand and stick with it. I fly primarily nitro so I want to know how effective the built-in vbar tail gyro is and how resistant to nitro vibes it might be...

Originally, I was leaning more towards the SK360 but I am hearing so many good things about Vbar now that I am confused.

Could someone give me the pros and cons of each?

I only crash due to random planetary intervention

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04-02-2009 08:50 PM  9 years agoPost 5
MrMel

rrProfessor

Gotland

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Im biased since I only run Vbar now-a-days, got two nitro 90's with it, rest (4) is electrics.
Nitro vibes isnt an issue at all, I run same parameters on my Electrics as I do on my nitro (T700N/T700E)

With v4 of Vbar thats coming soon it pretty much takes it to the next level of flybarless.

A few pointers below,

- Trim flight mode, hover in trim mode and the heli is trimmed perfectly.

- Optimizer, which optimize the heli while you fly, to match YOUR flying style, if you switch blades to different type, no problem, 2 flights later the optimizer has adjusted the heli to fly perfect with them.

- New tail parameters, both simpler, and some items that was missing in v3 like stop gain on each direction.

- Possibility to use Aux to run different gain on tail instead of complete different setups if you fly alot if different headspeeds.

Setting up the vBar will always be a little more complex, about 33% or so, since it has one more axis
On the other hand, wobbly piros and such interactions between tail & cyclic which is inherit on a 2-axis flybarless solution is totally fixable on a Vbar since the Vbar knows how the whole heli is acting, not just the cylic.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

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04-03-2009 06:07 AM  9 years agoPost 6
DEFILER

rrApprentice

Houston - USA, Balad - IRAQ, Kuwait - KWI

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Thank you MrMel,
I seem to be swayed to the dark side (Vbar) more and more. How is the current draw on the Vbar since I heard it is a bit more than normal. If I fly with 2100Mah lipos and 8717s I guess I could expect 2 or 3 flights correct?

I only crash due to random planetary intervention

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04-03-2009 07:37 AM  9 years agoPost 7
MrMel

rrProfessor

Gotland

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It draws more, yes, but exactly how much, is hard to judge, I had very high currentdraw on my T700N (I had pretty bad mechanical setup, servo-horn-hole was too far out)

just switching one mm inwards made wonder for the currentdraw, it flew the same, but currentdraw went down alot.

I know v4 is even better, I havent measured it, but I can take with me a datalogger and measure it, perhaps today or the next few days.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

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04-03-2009 11:11 AM  9 years agoPost 8
MrMel

rrProfessor

Gotland

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Just back from the field where I did some datalogging, currentdraw on Vbar & JR8717 with the v4 software is back to almost like paddles.
(down 40%, peaks are gone, avg is much lower)

So I say its an non-issue now, still depends if you get mechanical setup ok or not though.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

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04-03-2009 03:24 PM  9 years agoPost 9
DEFILER

rrApprentice

Houston - USA, Balad - IRAQ, Kuwait - KWI

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It is great having all these people doing all the research for us lazy folks. Thanks for the logging info and extremely informative posts.

Chris

I only crash due to random planetary intervention

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