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to use smartfly or not - 12/5/2012 4:50 PM   
gobigorgohome


 

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From: near Halifax, NS, CANADA
Status: offline 		Ok guys i have never used a smartfly regulator before and have had 6 differrent 50cc aircraft. I now have a 33% hanger 9 sukhoi. Do i have to use one or can i keep doing the same setup i have always done in the 30% just using the rx, batteries and switches.

Pro's and con's either way would be helpful. How do you have them setup.

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RE: to use smartfly or not - 12/5/2012 4:54 PM   
Tony Hallo


 

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Status: online 		Are you talking about a regulator or the power distribution system?  Not one in the same.

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RE: to use smartfly or not - 12/5/2012 5:21 PM   
gobigorgohome


 

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Status: offline 		The regulator. I am just wondering if this is a must need thing or can you still just use the rx. I havent used regulators or distributers. I'm just wondering what i can or should be doing with my setup. The servos i will be using are out of one of my 50cc aircrat where i had used a 6v 2200 nimh on rx and 1400 nicad on the engine.

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RE: to use smartfly or not - 12/5/2012 5:34 PM   
phantomdriver


 

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Status: offline 		I've used relion batteries & smartfly system for reliebility in all my 30% and larger scale. Never had a issue with any of my planes.
There is alot of different setups as there is colors just my setups have always worked very well for me.....

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RE: to use smartfly or not - 12/6/2012 3:32 PM   
Zeeb



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Status: offline 		Okay you're quite possibly asking for trouble on a 33% size model vs. what's worked for you on a 50cc size gasser. Specifically the use of NiMH batteries can be problematic depending on size and IR ratings of the cells and just off hand I don't recall seeing any 2200mah NiMH cells I'd trust to a 33% size model.

As for what else you might need depends on your radio setup and whether or not it can handle the four wing servo matching? Some rx's have an electrical buss capable of handling the model, some don't, some electrical switches when setup correctly will do fine some won't.

As mentioned, there are lots of ways to do a 33% size power system but you WILL need more capability than your 50cc stuff is using.

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RE: to use smartfly or not - 12/6/2012 4:47 PM   
gobigorgohome


 

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Status: offline 		Ok - so i am listening and appreciating what is being said. So what do i need to do then. As i have said i have not used a setup like this before. Is there certain things ( which smartfly - what batteries i can use ) that will help me out. I fly with a futaba 9c 2.4 and am using a faast 617 receiver.

Thanks to those who have responded so far.

On the sukhoi it only has one servo per wing - there are two for the elevator and one for the rudder. The jr 8711's are what is being used.

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RE: to use smartfly or not - 12/6/2012 5:03 PM   
DadsToysBG



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Status: offline 		the best battery is A123's 6>6v no need for a regulator. the jr 78711's can draw high amps. when called for. With the Smartfly you get 6.6 to the servos bypassing the receiver. No voltage drop. the smartfly also uses a "dead mans switch" no current goes thru the switch. Use as few connectors as you can. I solder my servos to the extensions, only using one plug at the Smartfly. the smartfly delivers 5v to the receiver and 6.6v from the panel to the servos. Iuse 20ga. wire thru out the plane. Dennis

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RE: to use smartfly or not - 12/6/2012 6:20 PM   
gobigorgohome


 

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Status: offline 		So what smart fly product are you using then?

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RE: to use smartfly or not - 12/6/2012 6:52 PM   
DadsToysBG



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RE: to use smartfly or not - 12/6/2012 7:06 PM   
gobigorgohome


 

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Status: offline 		Is that the power expander?

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RE: to use smartfly or not - 12/6/2012 7:13 PM   
DadsToysBG



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Status: offline 		He calls it a power distribution unit. Dennis

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RE: to use smartfly or not - 12/6/2012 7:19 PM   
BarracudaHockey



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quote:

ORIGINAL: gobigorgohome

Ok - so i am listening and appreciating what is being said. So what do i need to do then. As i have said i have not used a setup like this before. Is there certain things ( which smartfly - what batteries i can use ) that will help me out. I fly with a futaba 9c 2.4 and am using a faast 617 receiver.

Thanks to those who have responded so far.

On the sukhoi it only has one servo per wing - there are two for the elevator and one for the rudder. The jr 8711's are what is being used.

Given this, I wouldn't worry about a power expander. I'd run dual A123 batteries, each through an individual switch, to different ports on the reciever.

Thats essentially a 50cc setup servo wise.

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RE: to use smartfly or not - 12/8/2012 4:41 AM   
snuts


 

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Status: offline 		I to have the same airframe. As Andy has suggested Parallel A123 packs as a minimum. Also similar to my 50cc airframes. see link.
http://www.hangtimes.com/parallel_packs.html
I picture the real question as being. When are you going to start using distribution systems, then regs. If that is the case, yes you are at that point, and these will work well. By your handle, your only going to get bigger, (ha-ha).
Hope this helps, it really comes down to you. But, yes at 33% you can justify upgrading your power distribution.
-Snuts-

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RE: to use smartfly or not - 12/8/2012 10:15 PM   
Flyer88


 

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Status: offline 		Is that the flying field in Camrose Alberta ??

Gotta come visit !

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RE: to use smartfly or not - 12/9/2012 6:30 PM   
snuts


 

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Status: offline 		No, Elk Point Alberta. Travel Alberta lables it in there information as the "Best Model Airplane Feild in Alberta" We attend both of there 3+ day events each summer.

Now back to our regularly schedulede thread!

-Snuts-
(P.M. on it's way)

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RE: to use smartfly or not - 12/10/2012 6:15 PM   
gobigorgohome


 

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From: near Halifax, NS, CANADA
Status: offline 		So maybe this is a dumb question but why into seperate slots on the rx. Why couldn't you go y harness into one slot and if one battery fails the other on is still there.

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RE: to use smartfly or not - 12/10/2012 6:45 PM   
BarracudaHockey



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Status: offline 		You can if you need to.

But if you have an open port it eliminates a Y harness.

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RE: to use smartfly or not - 12/10/2012 7:11 PM   
600Bob


 

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Status: offline 		Redundancy, with a Y you have two batteries hooked to one pair of pins on the RX.  I have two RX batteries, one goes to the Batt. channel the other goes to a Y on an aileron channel.
quote:

ORIGINAL: gobigorgohome

So maybe this is a dumb question but why into seperate slots on the rx. Why couldn't you go y harness into one slot and if one battery fails the other on is still there.



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RE: to use smartfly or not - 12/26/2012 12:52 AM   
snuts


 

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Status: offline 		Never choke ALL your current draw through a Y harness. This is your weak link, and definatly the point to fail. Not a redundant system. A redundant system will have power if the other side ever becomes open momentarily. If you run out of ports on your receiver then back-feed through a Y harness on any channel, such as the throtle, rudder etc.
Often used as a link for clarity. Crazy good amount of information here.
http://www.hangtimes.com/parallel_packs.html


-Snuts-

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RE: to use smartfly or not - 12/26/2012 2:09 AM   
telejojo


 

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From: HUNTSVILLE, AL, USA
Status: offline 		I use the Smartfly power expander on all my big planes,you can use 2 bats. and you won't have to use y's you get 2 ports per channel.

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