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Old 02-02-2017, 08:44 PM   #1
Sparrow
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Help with ESC selection for 80 Rimfire


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Hello,

I need help with the selection for an ESC with BEC for a Great Planes Rimfire .80 50-55-500 Outrunner Brushless Motor. I have looked but not sure which to select. If someone can help, Thanks.

Max. Constant Current: 52A
Max. Surge Current: 65A
Max. Constant Watts: 1154W
Burst Watts: 2200
No Load Current: 1.8A
Input Voltage: 18.5-22.2V (5-6S LiPo)
RPM/V (kV Rating): 500
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Old 02-02-2017, 09:58 PM   #2
Daren71
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Re: Help with ESC selection for 80 Rimfire

HI Michel, I've had great luck with Castle Creations ESC's. Only 1 failure, no airplane damage, and replaced without question. They are in all my planes, I only fly electric.

You could use this one:

http://www.castlecreations.com/en/fi...sc-010-0112-00

Or this one:

http://www.castlecreations.com/en/fi...sc-010-0111-00

With the size of the motor, I'm assuming it's a larger airplane. The BEC in the ESC might not be big enough for your servos, if something should go wrong. I would use a bigger BEC.

I would consider using another smaller battery connected to one of these. I use a 750mah 3s battery, and I could fly easily 6 flights with 6 servos, and still have lots left. I like a bit of redundancy.

http://www.castlecreations.com/en/fixed-wing

Daren
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Old 02-03-2017, 07:28 AM   #3
Sparrow
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Re: Help with ESC selection for 80 Rimfire

Hello Daren,

Thank you very much for your help.

The plane is a ARF T-34 Mentor which weighed fully assembled 4 pounds 8 ounces. Figuring motor, battery and radio plus servos and extra battery to be closer to 8 pounds. Plane is 65" in Wingspan.

Michel
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Old 02-03-2017, 10:34 AM   #4
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Re: Help with ESC selection for 80 Rimfire

Agree totally with Daren on the choice of ESC . I too have only one "failure" but that was not due to a defective unit but due to a dunking while float flying. This was repaired at no charge even though they specifically specify no warrantee on dunkings.
I use mine with the internal BEC on an 82 inch TF Cessna 182 at 12 lbs ,running 7 digital Airtronics servos and no issues but then not all digital servos are the same as current draws can be different .
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Old 02-03-2017, 02:54 PM   #5
Max
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Re: Help with ESC selection for 80 Rimfire

I've got the CC's both standard and HV in all my large models and love them as well
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Old 02-03-2017, 03:27 PM   #6
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Re: Help with ESC selection for 80 Rimfire

And I forgot to mention, if you buy the optional cable and link, you can view your flights history, and program the BEC using a PC.

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Old 02-03-2017, 03:29 PM   #7
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Re: Help with ESC selection for 80 Rimfire

Quote:
Originally Posted by Sparrow View Post
Hello Daren,

Thank you very much for your help.

The plane is a ARF T-34 Mentor which weighed fully assembled 4 pounds 8 ounces. Figuring motor, battery and radio plus servos and extra battery to be closer to 8 pounds. Plane is 65" in Wingspan.
What is the make of T34 ?
Michel
Checked the specs on that motor and that is a lot of motor for a 4 lb 8 oz plane. What type of flying did you plan on doing ?

Bigger motor + bigger ESC + now more (5 to 6S )battery = more weight than needed. If doing scale or sport flying you can probably get away with much less
Unless you want a rocket ship.....lol
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Old 02-03-2017, 04:25 PM   #8
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Re: Help with ESC selection for 80 Rimfire

Hi Max, Daren and Len,

Yes motor was selected in error. I actually canceled the order but my LHS still ordered it. Good news is that I actually had to return the .80 Rimfire motor to my LHS today because the optional prop shaft is unavailable making this motor useless! Back to square one with motor selection...

Suggestions? I installed the Great Planes large electric motor mount. Besides that not quite sure what to buy!?

Michel
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Last edited by Sparrow; 02-03-2017 at 04:33 PM.
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Old 02-03-2017, 05:21 PM   #9
stegl
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Re: Help with ESC selection for 80 Rimfire

What is your prop ground clearance ? Prop shaft to the ground ..... also will you be flying off grass or hardtop ? Reason I am asking is , with too big a motor , you may not have enough ground clearance. Eflite power series are a good choice but my preference is Scorpion as they are one of the lightest with the mostess in power. Also important to know what type of flying you plan on doing as you don't really need to overpower by bunches.

My consideration would be to try and keep the motor KV up around 600 or higher and try and keep the battery voltage at 14 v or 4S.
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Old 02-03-2017, 07:00 PM   #10
Sparrow
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Re: Help with ESC selection for 80 Rimfire

Hello Len,

Prop shaft to ground = 10 inches.
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Last edited by Sparrow; 06-16-2017 at 05:59 PM.
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