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This thread is privately moderated by feathermerchant, who may elect to delete unwanted replies.
May 26, 2010, 06:05 PM
Trader Rating: 56
Use the 4S Luke
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For Sale

New 47A 12.1V power supplies from Featherpower.


These are like the 42A power supplies I sell on my website:
http://www.feathermerchantrc.com/
and here:
https://www.rcgroups.com/forums/show....php?t=1051873
They are about the same size but they are 47A and the fan is louder.
I am selling them for $40 + $10 shipping = $50 in the Contenital US.
They'll go USPS Priority.

I accept PayPal to feathermerchantrc@sbcglobal.net
Last edited by feathermerchant; Sep 10, 2010 at 11:25 PM.
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May 26, 2010, 06:26 PM
Trader Rating: 128
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Sending you a PM on these. THANKS,HUNKUS
May 26, 2010, 08:06 PM
Trader Rating: 128
Closed Account
Payment sent. THANKS,HUNKUS
May 26, 2010, 10:21 PM
Trader Rating: 49
Registered User
pm sent
May 27, 2010, 09:34 PM
Trader Rating: 49
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pAYPAL ON THE WAY
Jun 03, 2010, 07:51 AM
Trader Rating: 2
Multifaceted Heli Nut
heli-headcase's Avatar
How are the supplies wired in relation to the casings and ground? In other-words, is the 12V side floating or tied to the case on the negative side of the 12V?

If floating, or able to make floating, this would lend itself to wiring two supplies in series for 24V output to power those higher watt chargers (such as Hyperion) that can take advantage of higher watt output through higher voltage input without having to take measures to stop 'ground loops'.

Thanks
Jun 03, 2010, 09:22 PM
Trader Rating: 31
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I'll take one


I am sending a paypal payment for one.
Thanks
Jun 04, 2010, 07:30 AM
Trader Rating: 59
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I'll take one


PayPal payment sent.
Jun 04, 2010, 08:12 AM
Trader Rating: 56
Use the 4S Luke
feathermerchant's Avatar
Quote:
Originally Posted by heli-headcase
How are the supplies wired in relation to the casings and ground? In other-words, is the 12V side floating or tied to the case on the negative side of the 12V?

If floating, or able to make floating, this would lend itself to wiring two supplies in series for 24V output to power those higher watt chargers (such as Hyperion) that can take advantage of higher watt output through higher voltage input without having to take measures to stop 'ground loops'.

Thanks
The grounded side of the power supply is tied to the case and the ground wire of the plug. See my blog where I connected 2 similar power supplies in series for 24V. There is also a thread in Batteries and Chargers about putting 2 power supplies in series for 24V.
Jun 07, 2010, 08:04 PM
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Any left?
Jun 07, 2010, 08:28 PM
Trader Rating: 56
Use the 4S Luke
feathermerchant's Avatar
Oh yes. How many do you want?
Jun 07, 2010, 09:34 PM
Trader Rating: 49
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I'll take one. Paypal sent for $45 for the 47amp one listed above.
Jun 09, 2010, 08:16 AM
Trader Rating: 2
Multifaceted Heli Nut
heli-headcase's Avatar
Quote:
Originally Posted by feathermerchant
The grounded side of the power supply is tied to the case and the ground wire of the plug. See my blog where I connected 2 similar power supplies in series for 24V. There is also a thread in Batteries and Chargers about putting 2 power supplies in series for 24V.
OK, thanks for the heads-up blog. I understand how you configured the supplies.
Jun 10, 2010, 02:56 PM
Trader Rating: 31
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up and running


Finished mine up last night and charged some packs. Very happy with it all thanks again Feathermerchant.
Jun 10, 2010, 04:03 PM
Trader Rating: 56
Use the 4S Luke
feathermerchant's Avatar
Hey you can post pictures here. We want to see it.
Jun 10, 2010, 07:12 PM
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my set up


I just copied someone else's idea. Went to Radio Shack and bought a small project box, two sets of female banana plugs, some wire, connectors, and solder. It took all of an hour to put it together. The box is stuck using double sided tape, with a round of filament tape to be sure. I wired it up on the box end, tinned the wires on the other end, flattened them, and then soldered them to tabs on the power supply.
Last edited by jpflyer; Jun 10, 2010 at 07:13 PM. Reason: typo
Jun 10, 2010, 07:58 PM
Trader Rating: 0
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I don't see the 47amp on your website and the 42amp says $55.00 shipped not $45.

I'd like the 42amp for $45 shipped if still avaliable. Thanks.
Jun 10, 2010, 07:59 PM
Trader Rating: 61
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pda4you's Avatar
Got one of these from James - it is a beast! Small too boot.

Highly recommended!

Mike
Jun 10, 2010, 10:43 PM
Trader Rating: 49
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Quote:
Originally Posted by jpflyer
I just copied someone else's idea. Went to Radio Shack and bought a small project box, two sets of female banana plugs, some wire, connectors, and solder. It took all of an hour to put it together. The box is stuck using double sided tape, with a round of filament tape to be sure. I wired it up on the box end, tinned the wires on the other end, flattened them, and then soldered them to tabs on the power supply.
What gauge wire did you use?
Jun 11, 2010, 05:04 AM
Trader Rating: 56
Use the 4S Luke
feathermerchant's Avatar
I'd use 13ga minimum. You'd be surprised at the voltage drop.
Jun 11, 2010, 09:32 AM
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I think I have some 10-12 laying around I can use. I need to pick up some banana plugs.
Jun 11, 2010, 01:14 PM
Trader Rating: 31
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Wire


I used 12 gauge wire to hook mine up.
Jun 11, 2010, 03:31 PM
Trader Rating: 49
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I'm going to use 12G Deans Wet Noodle wire I have already and some EC5 gold bullet connectors. Then cut my CellPro 10 feed wires and make it interchangeable with the EC5's and the battery clips for the field battery.
Jun 11, 2010, 03:59 PM
Trader Rating: 56
Use the 4S Luke
feathermerchant's Avatar
Deans 12g is an excellent choice.
I prefer a polarized connector like Deans.
Jun 12, 2010, 10:50 PM
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I got mine today and got everything setup. So far so good and it takes up much less space than the old Pyramid 10amp box. I used Deans 12g Wet noodle wire and EC5 gold bullet connectors.

Thanks!
Jun 13, 2010, 07:05 AM
Trader Rating: 61
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pda4you's Avatar
BTW, Like your charger setup with the tile and smoke detector.
Jun 13, 2010, 07:24 AM
Trader Rating: 56
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feathermerchant's Avatar
The smoke detector is for the powe rsupply. LOL
Nice setup. Large guage wire is important now that we're charging more than 3S 2100 packs.
Jun 15, 2010, 08:36 PM
Trader Rating: 4
Flying is Freedom
Sky_Captain's Avatar
I'm joining the club.
Payment sent
Jun 15, 2010, 09:57 PM
Trader Rating: 56
Use the 4S Luke
feathermerchant's Avatar
Will go out in the morning.
Jun 19, 2010, 08:14 AM
Trader Rating: 9
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Payment send for one of your PS.
Jun 19, 2010, 02:11 PM
Trader Rating: 4
Flying is Freedom
Sky_Captain's Avatar
Record fast shipping!!! Thanks bro you are the best.
I picked up a project box and some banana connectors. Going to follow some of you guys. Looks good to me
Has anyone successfully put a power switch on this power supply yet? I really want to do it.
Jun 22, 2010, 12:49 PM
Trader Rating: 22
30 RC's and counting
Bmr4life's Avatar
Have any left? Can a single one of these support charging a 7.4v pack at 20 amps or 18.5 v pack at 10 amps?
Last edited by Bmr4life; Jun 22, 2010 at 12:58 PM.
Jun 22, 2010, 12:59 PM
Trader Rating: 22
30 RC's and counting
Bmr4life's Avatar
Quote:
Originally Posted by Sky_Captain
Record fast shipping!!! Thanks bro you are the best.
I picked up a project box and some banana connectors. Going to follow some of you guys. Looks good to me
Has anyone successfully put a power switch on this power supply yet? I really want to do it.
A dedicated power strip could get the job done easily.
Jun 22, 2010, 04:04 PM
Trader Rating: 56
Use the 4S Luke
feathermerchant's Avatar
Quote:
Originally Posted by Bmr4life
Have any left? Can a single one of these support charging a 7.4v pack at 20 amps or 18.5 v pack at 10 amps?
A 7.4V pack @20A will draw 8.4 X 20 / 10 = about 17A No problem.
An 18.5 pack @10A will draw 21 X 10 /10 - about 21A Noproblem.

I have plenty.
Jun 22, 2010, 08:32 PM
Trader Rating: 22
30 RC's and counting
Bmr4life's Avatar
Quote:
Originally Posted by feathermerchant
A 7.4V pack @20A will draw 8.4 X 20 / 10 = about 17A No problem.
An 18.5 pack @10A will draw 21 X 10 /10 - about 21A Noproblem.

I have plenty.
Money sent.
Jun 27, 2010, 03:58 PM
Trader Rating: 22
30 RC's and counting
Bmr4life's Avatar
Anyone figure a way to connect 4 gauge wire to the power supply?
Jun 27, 2010, 05:06 PM
Trader Rating: 56
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feathermerchant's Avatar
Why 4Ga wire?

You could strip it back about 1", split it into 2 then tin those, flatten them with pliers and push them into the terminals and solder them in. With wire that large and stiff you may need some sort of strain relief to keep from breaking the terminals.
Jun 27, 2010, 05:23 PM
Trader Rating: 22
30 RC's and counting
Bmr4life's Avatar
Quote:
Originally Posted by feathermerchant
Why 4Ga wire?

You could strip it back about 1", split it into 2 then tin those, flatten them with pliers and push them into the terminals and solder them in. With wire that large and stiff you may need some sort of strain relief to keep from breaking the terminals.
I want the option of not having the charger and PS in the same area and I read that big cable is needed depending on the run length.
Jun 27, 2010, 05:32 PM
Trader Rating: 56
Use the 4S Luke
feathermerchant's Avatar
Big cable is needed of you want to run a long distance. It would b a lot better, cheaper and easier to just use a 120V extension cord.
Jun 27, 2010, 05:57 PM
Trader Rating: 22
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Bmr4life's Avatar
Quote:
Originally Posted by feathermerchant
Big cable is needed of you want to run a long distance. It would b a lot better, cheaper and easier to just use a 120V extension cord.
You saying to use the cable for its wire between the charger and PS or to move the PS closer to the charger?
Jun 27, 2010, 07:02 PM
Trader Rating: 61
Registered User
pda4you's Avatar
Quote:
Originally Posted by Bmr4life
You saying to use the cable for its wire between the charger and PS or to move the PS closer to the charger?
DC current has great losses over distance. AC does not. That is why those huge transmission power lines are all AC. Just ask Mr. Edison. He tried to do the DC thing without much success.

So yes, PS close to charger with short leads. LONG AC wire to power the PS. Life is good.

Mike
Jul 22, 2010, 08:58 PM
Trader Rating: 56
Use the 4S Luke
feathermerchant's Avatar
Hey these 47A power supplies have been added to my website:
http://www.feathermerchantrc.com/
Jul 30, 2010, 07:04 PM
Trader Rating: 9
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BACKEMFNRG's Avatar
Nice, I may get one of those too.

I think I'll get a smoke detctor, that was a nice charge station setup.

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