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HomeScale✈️AircraftScale HeliScale Helicopter Main Discussion › Redundant power distribution...help
06-02-2015 04:31 AM  4 years ago
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Margaritaman

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San Dimas, CA. USA

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Redundant power distribution...help
Ok so now I'm diving into the world of high end electric scale AND turbine. In the past I've used a simple Scorpion BUG and a Spektrum 9020 with three sats and it served me well so far with the simple scale stuff but now with a lot of money hanging in the air...

I also flew with a buddy's Jeti and loved it so I'm going to take the plunge and upgrade radios and since we're doing that the I'd like to add a couple quality power distribution systems in the high end helis.

I think I know where I want to go with it but I'd really like some thoughts and opinions.

So...please

Thanks
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06-02-2015 08:19 AM  4 years ago
mookie

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UK

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I had the same thoughts as you with the power system, so i opted for a PowerBox Evolution and a power expander SRS, the Power expander allows me to run 2 receivers and the Evolution regulates the power from 2 power box Lipo's, I use a CGY750.

There are some people who would say simpler the better, but i like the system that i have installed.

https://rc.runryder.com/t757702p4/

Have a look at my thread, scroll down for a few pics.
valve boy!
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06-02-2015 11:21 AM  4 years ago
Phoenix NOTAR

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Tallahassee, Florida USA

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If you are going with a Jeti system, take a look at their Central Box 200. It is what I use in my turbine Lama.
You can use two batteries (they do not need to be the same type or voltage), two Jeti receivers which is actually 4 receivers, and protection against a stalled or shorted servo(s) affecting the rest of the system.

Sandy
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06-02-2015 02:15 PM  4 years ago
Margaritaman

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San Dimas, CA. USA

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Thank you for both the replies.

I am looking at the 200. Would you elaborate on the Rx part please. I see one is sold with two Rx's and then there is an option for three, and you mentioned four. Also, they appear to use proprietary battery plugs, can I just use an adapter so as not to have to re solder and have Jeti specific plugs?

Thanks again!
Build, fly, sell, repeat
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06-02-2015 02:46 PM  4 years ago
Phoenix NOTAR

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Tallahassee, Florida USA

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The Central Box 200 (and 100) use "MPX" plugs for battery input. These are multiplex brand/style plugs and are VERY good. Same type as used with Jakadofsky Turbine power leads. I did as you suggested, and made an adapter to my two A123 batteries. I did not want to be yanking on the CB200 each time I charged the batteries.

All Jeti Duplex receivers have two receiver systems in them, so each receiver is actually 2 separate receivers. With the CB200 you can use two Duplex receivers, so you actually have four receivers being used to receive the radio signals. They can be configured as "redundant" or "required" as you wish to do. (some large jet users have one receiver going to some servos, and the second one going to other servos). Mine is set up as redundant, so I can lose one and still fly completely normal/safe with the other.

If you get a 3rd R3 receiver you can use that as a wireless switch to turn the model on/off from the transmitter without a mechanical (or magnetic) switch. These do draw a slight bit of power even when "off", so you should still disconnect it from the power source if the model is sitting for a long period of time. But it does have a "cool" factor to impress your buddies when you power it up from the transmitter.

To get the full benefit of the CB200 it must use EX bus from the transmitter, so the only downside I see is that you cannot use "udi" single wire connection to a flybarless control unit, it needs to be connected to the FBL unit with wires for each servo. That is how my Turbine heli is set-up, and it works great.

Do not overlook the servo isolation feature, I could be very useful if you have a servo issue, it will not damage the rest of the system due to a high power draw or short circuit.

Sandy
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06-02-2015 04:01 PM  4 years ago
ssmith512

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Indianapolis, IN USA

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I decided on a PowerBox Baselog. 2ea 2S lipos to the BaseLog and then two 7.4V regulated power leads from the BaseLog to Y-cables on the CGY750.

BUT, since you are switching to Jeti, that Jeti CB200 sure looks like it would be the perfect setup. I wish Futaba had something similar!
Steve
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06-02-2015 06:02 PM  4 years ago
Margaritaman

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Thanks a million! "I get it."
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06-02-2015 06:24 PM  4 years ago
Margaritaman

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San Dimas, CA. USA

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...
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06-03-2015 07:56 AM  4 years ago
Andy01

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Brisbane, Australia

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You could look at the JR Power Safe Rxs. I have both RD922 and RD1222, and they have dual power inputs with an internal fail-over.

I rune with two 2s A123 batteries.

http://www.desertaircraft.com.au/sh...l-receiver.html

Colin
Vario Long Ranger 700e
Seahawk 600
UH-1N 500
Baumann EC-145 800+ (coming soon )
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06-03-2015 12:12 PM  4 years ago
Phoenix NOTAR

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Tallahassee, Florida USA

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I am not sure that the "PowerSafe" receivers will play nice with the Jeti radio system that he said he was going to use.

Sandy
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06-03-2015 04:53 PM  4 years ago
Margaritaman

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San Dimas, CA. USA

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Between the info posted here and a 20 minute conversation with the guy at Espirit I actually feel reasonably knowledgeable.

My order should be here in a few days then the real work begins.
Build, fly, sell, repeat
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06-04-2015 01:00 AM  4 years ago
Mojave

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Palos Verdes, Ca. USA

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If it was Danny at Esprit that you talked to, he knows the Jeti system very well, as he is a Jeti dealer and pilot. He's also a bud of mine, I fly with him when I'm in Florida. He's a hell of a good pilot too
Barry
All helis and planes have an expiration date stamped on them...you only find it after you crash!!
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