EF Edge Motor Question

[JeeUm]

I've got the 45" Extreme Flight Edge and a store credit at Towerhobbies that will cover a motor for it. Can someone figure out what Axi is equivalent to the Torque 2818/900 from EF?

http://www.extremeflightrc.com/html/torque.html

http://www2.towerhobbies.com/cgi-bin/wti0093p?&C=GHG

Thanks.

[ConRadical]

http://www2.towerhobbies.com/cgi-bin...?&I=LXPPW4&P=0
2217/20

That's the closest dude.

[JeeUm]

It's only good for models up to 22.9oz. The edge is much heavier then that. I've got a 2814/12 and that might not be enough either.

[ConRadical]

I don't really see a good Axi sub, but that's closest

[ConRadical]

maybe a 4120/14, but i think you have to be 4S to use that.

[JeeUm]

I'm starting to think maybe this one.

http://www2.towerhobbies.com/cgi-bin...?&I=LXPPX3&P=0

The Torque motor is a 900kv motor, this one says rpm/v is 1200. I think thats the same thing.


See, this is while I will never be an electric only guy. Trying to figure this stuff out is just too hard. Why can't these different companies try to standardize their stuff. At least the Axi/torque has similar numbers. I blieve the "28" on both motors is the can size.

Tried looking at other motors on tower, and none of it makes any sense.

[ConRadical]

a little over kill, but i could work, might have to change the prop a little. Also, make sure you use at least a 45amp ESC on that one.

[JeeUm]

I've got a 40a CC esc, so what ever it is it will have to work with that.

[ConRadical]

	Quote: Originally Posted by JeeUm
	The Torque motor is a 900kv motor, this one says rpm/v is 1200. I think thats the same thing.

Doesn't KV stand for RPM rpm per volt?

900 doesn't equal 1200

but nothing a different size prop can't fix.

[SleepyC]

	Quote:
	See, this is while I will never be an electric only guy. Trying to figure this stuff out is just too hard. Why can't these different companies try to standardize their stuff.

I agree.

Just tell me recommended weight and wingspan for a motor and I'll be cool.
Even just: This motor is good for: 3.5 > lbs scale flight 2.5 > lbs sport flight 2> lbs 3D flight

Thats all I'm asking.
SIMPLE... I don;t want to know how many watts or voltz or anything... I just want to plane to fly.
with a 100cc gasser you can cram ANY 100cc gasser into it.. and it will for the most part work... thats what I like!

[Jaybird]

I totally agree, confuses the hell out of me. Make them 10, 20, 30 size or something like that.

[ConRadical]

man, now i'm confused..

2814/12

28 - Can size, I'm going to assume
14 - I think that's the number of winding
12 - I think that's the gauge wire uses.

Can anyone confirm this?

[SleepyC]

	Quote:
	2814/12 28 - Can size, I'm going to assume 14 - I think that's the number of winding 12 - I think that's the gauge wire uses. Can anyone confirm this?

I can confirm that I DON'T CARE..

what size plane will all that numerical mess fly!

[TheTank]

Jeeum, shoot Chris a PM, he will probably be able to tell you a comparable AXI to substitute.

[ConRadical]

Here's a copy and paste...

Understanding AXI OUTRUNNERS
Each AXI motor has a 6 digit numbering system. For example: 2208/34. The first two numbers (22) represent the diameter of the stator (the fixed part in the middle of the motor) in millimeters. The second two numbers (08) represent the length of magnets (attached to the rotating case) in millimeters. The third set of two numbers (34) represents the number of wire winds, also called turns.

When comparing the motors within any series (2208, 2212, etc.) there are several characteristics that you will notice. Motors with higher winds spin slower for every volt of electricity applied, they have a lower Kv (RPM/V). They spin a larger propeller at slower speeds and at a lower current than low turn motors. Motors with lower winds spin faster for every volt of electricity applied, they have a higher Kv (RPM/V). They spin a smaller propeller at higher speeds and at a higher current than high turn motors.

To determine the motor for your model: analyze the character of your airplane, is it sleek and fast, or a slower plane with a lot of drag? For the high speed airplane a low turn motor that spins a small prop fast would be the right choice. For a Trainer or Biplane with a lot more drag, a high turn motor that can spin a much larger prop and produce a lot of thrust at low speed is what you want.