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HomeRC & PowerAircraftHelicopterFlybarless Rotor Head SystemsV-Bar › Vbar rolled my 700e PROBLEM SOLVED
03-10-2012 02:50 AM  6 years agoPost 41
Santiago P

rrProfessor

South West, Ohio

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I am running the same setup on my BeastX:

two power wires going to the RX, and letting the two 3-wire jumpers carry the power to the FBL unit.
dozens of flights, no issues.

The 608hs with mini Vbar has ~12 flights, no issues so far, but I am yet to look at the log.

Why would it not work backwards? the two 3-wire jumpers have no diodes to prevent the power to go in both directions. RIGHT?

santiago

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03-10-2012 02:53 AM  6 years agoPost 42
GetToDaChopper

rrElite Veteran

Las Vegas , NV

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on reviewing the mini v-bar manual it seems to show that roll, nick and heck signals only all go to RX A on the mini v-bar so no power for the RX there, and the pitch signal gos to RX B on the mini v-bar so if RX B is not sending power back to the RX on a 3 wire jumper (power + signal) then a "Y" must be used to supply power to the RX......

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03-10-2012 02:57 AM  6 years agoPost 43
westwindpilot

rrVeteran

Glendale, AZ

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Its a Y harness with one additional plug. Two go to my Vbar for redundancy and one plugs straight into my rx.

I used to have only two both going to my Vbar.

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03-10-2012 02:58 AM  6 years agoPost 44
GetToDaChopper

rrElite Veteran

Las Vegas , NV

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that would def do it all right (great power for everything) two power jumper to the v-bar and one to the RX is the way to go for sure !.....

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03-10-2012 03:00 AM  6 years agoPost 45
westwindpilot

rrVeteran

Glendale, AZ

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I have seen what happens when you have a big enough battery but your leads cant carry the amps to do the job. It usually always ends in disaster. I do not want that to happen.

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03-10-2012 03:00 AM  6 years agoPost 46
AzHyper

rrKey Veteran

Peoria, Az.

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Good job Steve. I'm sure you've just helped more people than you know.

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03-10-2012 03:02 AM  6 years agoPost 47
westwindpilot

rrVeteran

Glendale, AZ

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Thanks Scott. I hope your flying is going well at Sun Valley.

Whens the phoenix fun fly again?

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03-10-2012 03:04 AM  6 years agoPost 48
GetToDaChopper

rrElite Veteran

Las Vegas , NV

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the standard conncection with a receiver and four patch wires is the prob here as there is only signal leads going to the v-bar from the RX but no power going from the v-bar to RX like a "s-bus" or "speck" setup would have, at least that's what the manual says "the standard conncection with a receiver and four patch wires" three of which are all on one 3 wire patch cable, roll, nick and heck going to RX A on the mini v-bar from the RX........

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03-10-2012 03:07 AM  6 years agoPost 49
westwindpilot

rrVeteran

Glendale, AZ

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The RR member named Band1086 is actually the guy who saved me. I saw some random pictures of his and noticed that he runs the black vbar and same rx. I asked him to send more and saw in one of the pics that he had another lead going into the rx. I figured out from him and by looking at it that it was power. Then it clicked in my head of why you need a seperate lead.

Steve

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03-10-2012 03:17 AM  6 years agoPost 50
Band1086

rrElite Veteran

Kennewick, Wa. USA

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If you have four regular 3 wire patch cables going between the Receiver and VB buses, two power cables into one or the other should work fine. But, I usually use one power cable into the receiver bus and one into the VB bus. On S-Bus, the receiver doesn't need a power cable though because it uses hardly any power and what it does need it can get through the single 3 wire patch cable. So, in that case both power wires can go into the VB bus...

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03-10-2012 03:19 AM  6 years agoPost 51
GetToDaChopper

rrElite Veteran

Las Vegas , NV

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i wonder if "RX B" has power on it (pos + neg + signal) if it does then you could just use a 3 wirs jumper cable from the mini v-bar to the RX for power as the RX does not draw a lot of amps (very little) and volts is what is important for the RX, i'm sure MrMel will know that for sure......

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03-10-2012 03:22 AM  6 years agoPost 52
GetToDaChopper

rrElite Veteran

Las Vegas , NV

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you must remember that we are talking about the "mini" v-bar here and not the "full size" v-bar which hooks up dif then the "mini" when using "the standard conncection with a receiver and four patch wires".......

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03-10-2012 03:31 AM  6 years agoPost 53
Santiago P

rrProfessor

South West, Ohio

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If you have four regular 3 wire patch cables going between the Receiver and VB buses, two power cables into one or the other should work fine.
Thank you my friend! Just needed confirmation.

My 608hs is not Sbus, so I can only have it wired as is, 2 power leads to RX and let jumpers B & C carry the power to the mini Vbar

s

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03-10-2012 03:34 AM  6 years agoPost 54
GetToDaChopper

rrElite Veteran

Las Vegas , NV

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the "full size" hooks up like this......

and the "mini" hooks up like this.......

see the dif there ?

there is no way to have four regular 3 wire patch cables going between a traditional receiver and the "mini" v-bar as three of four signal wires from the RX are all on one three wire cable going to the "mini" v-bar at the one port "RX A" and no power there for the RX !

so unless there is power at "RX B" and you use a three wire cable from "RX B" to the RX the RX will have no power !

someone who knows for sure about "RX B" on the "mini" v-bar please correct me if i'm wrong here......

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03-10-2012 03:52 AM  6 years agoPost 55
Santiago PrrProfessor - South West, Ohio - My Posts: All  Forum  Topic

On the mini you missed RX C goes to gyro gain which also carries power as well as RX-B

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03-10-2012 03:55 AM  6 years agoPost 56
GetToDaChopper

rrElite Veteran

Las Vegas , NV

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as long as you use a three wire cable at "RX C" or RX B" then you should be good to go without the need for a "Y" cable as the RX needs very little amps but it does need solid and high enough voltage when using it with a FBL controller with all the servos hook up to the FBL unit, the FBL unit will be needing all the amps there for the servos and such !

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03-10-2012 04:15 AM  6 years agoPost 57
Band1086

rrElite Veteran

Kennewick, Wa. USA

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Thank you my friend! Just needed confirmation.
Your welcome...

Yes, in the case of the mini VB and standard receiver, both power cables have to go into the receiver. But in the case of the mini and the S-Bus, where would the patch cable go from the SB port to the...which port on the mini?

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03-10-2012 04:46 AM  6 years agoPost 58
Band1086

rrElite Veteran

Kennewick, Wa. USA

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BTW, I don't have my coll hooked up to ch 6, that's where I have the throttle hooked up (VB gov). CH 3 is coll and this is on the separate receiver set up, and on the full size VB, so I'm thinking there was "channel assignments" on the "transmitter screen" on the second page. I know there is with SB, but I couldn't remember with separate receivers.

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03-10-2012 05:35 AM  6 years agoPost 59
GetToDaChopper

rrElite Veteran

Las Vegas , NV

My Posts: All  Forum  Topic

But in the case of the mini and the S-Bus, where would the patch cable go from the SB port to the...which port on the mini?
one "three wire jumper cable" from a futaba S-Bus RX to mini v-bar port "RX C" and ESC or thottle servo to mini v-bar "RX B", with this setup no "Y" power cable is needed But if using a ESC without a internal BEC you must then power the mini v-bar with "other" source such as a 2 cell lipo

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03-10-2012 05:52 AM  6 years agoPost 60
Band1086

rrElite Veteran

Kennewick, Wa. USA

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Got it, sounds very clean, but does the mini Pro version have the Gov feature on it? And if so, how does it hook up?

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HomeRC & PowerAircraftHelicopterFlybarless Rotor Head SystemsV-Bar › Vbar rolled my 700e PROBLEM SOLVED
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