What do you guys think about the Scorpion Brushless Motors  
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All Forums >> Electric Aircraft Universe >> Brushed/Brushless motors, speed controls, gear drives >> What do you guys think about the Scorpion Brushless Motors
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What do you guys think about the Scorpion Brushless Motors - 8/8/2007 2:54:50 AM   
snow800


 

Posts: 6
Joined: 6/26/2007
From: SE Michigan, MI, USA
Status: offline 		I picked up a Airfoilz Edge 540 Combo at the Toledo Show back in April,
The combo came with a Scorpion 2215-18 brushless outrunner with a Scorpion speed controller ( I have never heard of them before the show).
AIRFOILZ said they were a really good new company that made great products.... They were not lying!!!

I love the plane and the power package
I have about 75 fights on this thing and it just won't quit!!!!
Never had a problem one, just keeps on going and going

The motor came with a prop shaft and a motor mount included
at half the cost of the competition.

I am running a 35 amp speed controller with 11.1 volt 2200 ma 3 cell Lipos and get 20 minute flights out of it.


I just picked up a Hanger 9 twist 40 that I am going to go electric with.

I emailed Scorpion at www.innov8tivedesigns.com to see what they recommend for it.

Any of you guy's had a Scorpion.

What did you think?????

I want to know if YOU had one, not hearsay from what happened when your friend's, sister's, cousin bought one.
Thanks
Mike

< Message edited by snow800 -- 8/8/2007 3:43:53 PM >
       Post #: 1

RE: What do you guys think about the Scorpion Motors - 8/8/2007 5:03:41 AM   
INeedHelp


 

Posts: 502
Joined: 8/19/2004
From: Mesa, AZ, USA
Status: offline 		I like them a lot and they are a bit cheaper here: http://www.bmkdesigns.net/Scorpion-c-26.html

I have 3 of them in service now and plan on getting more as I need them.

(in reply to snow800)
       Post #: 2

RE: What do you guys think about the Scorpion Motors - 8/8/2007 3:43:15 PM   
snow800


 

Posts: 6
Joined: 6/26/2007
From: SE Michigan, MI, USA
Status: offline 		Thanks for your reply, anyone else have any comments ??

(in reply to INeedHelp)
       Post #: 3

RE: What do you guys think about the Scorpion Motors - 8/18/2007 11:13:43 PM   
RCDudeHobbies



Posts: 17
Joined: 8/2/2003
From: Milwaukie, OR, USA
Status: offline 		I like them so much I decided to carry them on my website. I currently have 4 planes with Scorpion motors and they perform flawlessly. I'm really impressed with their quality, price, and performance, but the best feature are the prop charts. They make it easy to find the perfect motor for any plane I'm building.


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RC Dude Hobbies

(in reply to snow800)
       Post #: 4

RE: What do you guys think about the Scorpion Motors - 8/20/2007 1:30:51 AM   
captinjohn


 

Posts: 5615
Joined: 1/25/2002
From: Hesperia, MI, USA
Status: online 		I have a Scorpion 2215-18 motor with a x mount and I want to use it on a eflight Cap 232 Edge that uses a stick mount. How should I do this??? Capt,n

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RE: What do you guys think about the Scorpion Motors - 8/20/2007 1:37:48 AM   
snow800


 

Posts: 6
Joined: 6/26/2007
From: SE Michigan, MI, USA
Status: offline


Easy, Click below

http://www.innov8tivedesigns.com/product_info.php?cPath=54_52&products_id=102

< Message edited by snow800 -- 8/20/2007 1:38:26 AM >

(in reply to RCDudeHobbies)
       Post #: 6

RE: What do you guys think about the Scorpion Motors - 8/20/2007 1:52:18 AM   
RCDudeHobbies



Posts: 17
Joined: 8/2/2003
From: Milwaukie, OR, USA
Status: offline 		CaptinJohn,

That's going to be some serious power on that airplane. If you haven't seen it run yet, I think you're going to be pretty impressed. Thats a very popular Scorpion motor model.

Snow is right... use the Scorpion 22mm stick mount. It's cheap, yet strong, and a perfect fit for a stickmount of course.



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RC Dude Hobbies

(in reply to captinjohn)
       Post #: 7

RE: What do you guys think about the Scorpion Motors - 8/20/2007 2:40:49 AM   
captinjohn


 

Posts: 5615
Joined: 1/25/2002
From: Hesperia, MI, USA
Status: online 		Hey thanks Guys for the fast reply!! I plan on flying the Cap on low throttle to conserve the battery pack. I hope to get 12 + min flights. I cannot wait to try it. Capt,n

_____________________________

I never met a engine I did not like!

(in reply to RCDudeHobbies)
       Post #: 8

RE: What do you guys think about the Scorpion Motors - 8/23/2007 2:09:22 PM   
kgfly


 

Posts: 52
Joined: 4/28/2006
From: MelbourneVictoria, AUSTRALIA
Status: offline
quote:

ORIGINAL: captinjohn

Hey thanks Guys for the fast reply!! I plan on flying the Cap on low throttle to conserve the battery pack. I hope to get 12 + min flights. I cannot wait to try it. Capt,n

I'll be interested to hear how that turns out for you. Running brushless motors at low throttle is very inefficient and will tend to cause the ESC and motor to run hot. You might find this FAQ from www.castlecreations.com interesting:

quote:

2. Can I control how much current passes through my speed controller by limiting full throttle travel on my transmitter with endpoint adjustments/trim? In other words can I use a 25 amp speed controller with a motor that will pull 45 amps but lower my top throttle endpoint on my transmitter so my watt meter only shows 25 amps at full throttle? Will this be OK?

NO!!! A speed controller controls power to the motor by turning full throttle current on and off really fast, 11 to 13 thousand times per second (Pulse Width Modulation or PWM). The percentage of each on/off pulse that is off compared to the part that is on determines how much power the motor sees. I.E. With a pulse that is 50% off and 50% on the motor will see 50% power*. Because each on pulse is 100% of full throttle current, a system set to pull 20 amps at full throttle through a Phoenix 10 will not last if you are throttled back to the point where you only see 10 amps on a wattmeter. The ESC in this case is still switching 20 amps, which it can’t do for long. Actually it is worse than the simple example above. Because an electric motor will always to try to pull as much power as is available to get to its rpm (volts times Kv), when you are running the motor below its Kv speed by switching power on an off, each on pulse will actually be way over the full throttle amp draw. That is why ESCs work harder at partial throttle than full throttle and why we underrate our ESCs. We underrate not so they can handle more current than their rating at full throttle, but so they can handle extended partial throttle operation with no problems.

* Actually, electric power is not linear as in this example, but you get the idea.


(in reply to captinjohn)
       Post #: 9

RE: What do you guys think about the Scorpion Motors - 8/24/2007 2:28:04 AM   
captinjohn


 

Posts: 5615
Joined: 1/25/2002
From: Hesperia, MI, USA
Status: online 		I have a 40 amp ESC and a 25 amp motor. Is that going to make flying slow a harmfull thing????? Capt,n

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RE: What do you guys think about the Scorpion Motors - 8/24/2007 2:39:45 AM   
snow800


 

Posts: 6
Joined: 6/26/2007
From: SE Michigan, MI, USA
Status: offline 		It will work great, I have a 35 amp Scorpion ESC with a Scorpion 2215-18 with 11.1 volt 2200 mah 15c 3cell batteries.
It works fine about 75 flights and it hasn't missed a lick.
The motor is just slightly warm to the touch, the esc has no heat in it at all after a full flightand I get 20 minute flights out of these batteries with the engine speed all over the place.
Mike

< Message edited by snow800 -- 8/24/2007 2:41:04 AM >

(in reply to captinjohn)
       Post #: 11

RE: What do you guys think about the Scorpion Motors - 8/24/2007 3:04:23 AM   
RCDudeHobbies



Posts: 17
Joined: 8/2/2003
From: Milwaukie, OR, USA
Status: offline
quote:

ORIGINAL: captinjohn

I have a 40 amp ESC and a 25 amp motor. Is that going to make flying slow a harmfull thing????? Capt,n


Actually this is exactly what you want. A higher rated ESC then the motor you're going to use with it. Overrating your ESC is a good idea to keep it running cool and stress-free. Your 40A ESC will perform just fine with any motor 35A and below.


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Randy Moody
RC Dude Hobbies

(in reply to captinjohn)
       Post #: 12

RE: What do you guys think about the Scorpion Motors - 8/26/2007 4:48:50 AM   
captinjohn


 

Posts: 5615
Joined: 1/25/2002
From: Hesperia, MI, USA
Status: online 		RCDude: That is what I wanted to hear!!! Thanks Capt,n

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I never met a engine I did not like!

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RE: What do you guys think about the Scorpion Brushles... - 8/26/2007 7:17:06 AM   
skywalker



Posts: 15
Joined: 10/30/2002
From: Poplar Bluff, MO, USA
Status: offline 		Would anyone care to explain how to connect the motor, esc,