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Electric Stunt => Gettin all AMP'ed up! => Topic started by: Vincent Corwell on June 18, 2009, 06:09:22 AM

Title: Nobler with A123 setup ?
Post by: Vincent Corwell on June 18, 2009, 06:09:22 AM

What is an ideal setup for a Nobler

I want to use A123 battery in single pack

I can get Hyperion or Axi motors locally

then the ESC and timer are no problem

other motors or batteries are difficult to

get in Europe, ( without incurring heavy charges )


Fly stunt love our forum

Vincent H^^ H^^ H^^

Title: Re: Nobler with A123 setup ?
Post by: Alan Hahn on June 18, 2009, 08:14:15 AM

Vincent,
First off make a mockup of the A123 pack to see where you can put it in the plane.

I don't know much anything about the Hyperion motors, but if I was going with an AXI in a Nobler, I would start with the 2814 or 2820. I am not sure what kV you will need with a 5s A123 setup (I would guess somewhere in the 900-1000 rpm/Volt range.  However I think Igor Burger would probably have a better idea of where to start. He may know more about the Hyperion too.

I just recalled that on my original Nobler thread, there was a post from a German modeler on a electrified Nobler. That was a really sweet setup! Here is a link to it. The relevant reply is #34

http://stunthanger.com/smf/index.php?topic=6975.0

Title: Re: Nobler with A123 setup ?
Post by: John Witt on June 18, 2009, 05:33:45 PM

What are the dimensions of a single cell? I found some web site info, but if you're building up a pack from individual cells, the single cell size is a good thing to know.

John

Title: Re: Nobler with A123 setup ?
Post by: Igor Burger on June 18, 2009, 10:45:50 PM

Quote from: Alan Hahn on June 18, 2009, 08:14:15 AM

I am not sure what kV you will need with a 5s A123 setup (I would guess somewhere in the 900-1000 rpm/Volt range.  However I think Igor Burger would probably have a better idea of where to start. He may know more about the Hyperion too.
http://stunthanger.com/smf/index.php?topic=6975.0

I do not know Hyperion too, but since I know that combo 6s A123 works well with AXI 2826/12 for 5 minutes fligth time, I would say that 5S A123 will work well with AXI 2826/10. Both with APCE 12x6. it will have 20% less power, so you must use slower RPM and it means shorter lines. I fly 20m so if I calculate it witout knowing the model, then 20% power less means rpm 7% lower, so also line length must be 7% shorter to have the same lap time, so I would say lines approximately 18-19m.

One cell weights 70g so whole pack is at 350g plus motor 190g plus esc 50g ~= 600g = 22oz

cells dimmensions are directly in cell name: ARN 26650 ... means diameter is 26mm and length is 650mm :-)

Title: Re: Nobler with A123 setup ?
Post by: John Hammonds on June 19, 2009, 11:12:45 AM

Quote from: Igor Burger

cells dimmensions are directly in cell name: ARN 26650 ... means diameter is 26mm and length is 650mm :-)

Does that include the cardboard wrapper? (I haven't checked, but it would obviously make a difference when checking it will all fit).

TTFN
John.