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What is it? - 11/24/2012 6:15 PM   
JollyPopper



Posts: 1959
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Last Login: 5/24/2013
From: Mountain Home, AR, USA
Status: offline 		I have been in nitro powered RC for quite awhile but now I want to dabble into electric power. I am looking at a Scorpion 2205-36 motor. What does that mean? What kind of power will that deliver in terms of how much airplane will it handle comfortably? What size battery do I need to power it? How big an ESC do I need to operate it? What size nitro engine would that equate to and how do I know that from the 2205-36 designation? Any help will be appreciated.


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RE: What is it? - 11/25/2012 12:10 AM   
gaRCfield



Posts: 6433
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Joined: 5/20/2008
Last Login: 5/23/2013
From: Mason, OH, USA
Status: offline 		First, you should read through this - I learned a lot from it:
http://www.rcuniverse.com/forum/m_7100376/tm.htm

Electric motors are usually named by their size - (diameter+length and rpm rating). So, the 2205-36 has a 22mm stator diameter, 5mm stator thickness, and 36 wire turns (which equates to 1670kV). Some brands will use the actual kV value for the last number (ie Scorpion 4035-250 which has a 40mm stator that is 35mm thick, and spins 250 rpm per volt).

The best thing you can do is find someone running that motor successfully and copy their setup. Then you can try changing props or batteries from there.

Electric power is a full system - all of the components matter when setting up the plane. So you need to consider prop size, batteries, etc. when making your decisions. It is difficult to say what kind of power or rpm you will get since changing one part of the system will impact everything.

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RE: What is it? - 11/25/2012 2:25 AM   
JollyPopper



Posts: 1959
Score: 158
Joined: 10/16/2002
Last Login: 5/24/2013
From: Mountain Home, AR, USA
Status: offline 		WOW!!!!!!!!!!!!!!!! There is a lot of information in that article. It will take some time for my old brain to get around all that info, but it certainly reads as if it were worth it. I think I'll print it and try to digest it a bit at a time. Thanks for the link.


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RE: What is it? - 11/25/2012 4:16 AM   
gaRCfield



Posts: 6433
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Joined: 5/20/2008
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From: Mason, OH, USA
Status: offline 		You're welcome. Once you get through it, let us know what questions you have - there will be at least a few

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RE: What is it? - 11/28/2012 4:47 AM   
jdetray



Posts: 1616
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Joined: 12/7/2004
Last Login: 5/20/2013
From: Napoleon, OH, USA
Status: offline 		Here are the specifications for the Scorpian S-2205-36 motor.

http://www.scorpionsystem.com/catalog/discontinued/motor/s22/S-2205-36T/

Some of the highlights:

Max Continuous Current: 10 Amps
Max Continuous Power: 110 Watts
Max Lipo Cell: 3s

- Jeff

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