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12-08-2008, 08:32 AM | #1 |
Newbie Join Date: Feb 2008 Location: Tacoma
Posts: 36
| What is the amp draw with stock running gear
My applogies if this has been asked before, but has some measured the amp draw of the stock ESC/motor/drive train? Based on the 45-60 minute run times it looks like the average is around 1 amp, but how high does it jump when the motor is stalled? I got my MRC last night as a birthday present from my kids. The first step is to replace the battery plugs so I can use a real battery charger. I should probably just buy some more Deans plugs, but I have JST connectors sittiing on my bench. |
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12-08-2008, 10:43 AM | #2 |
Newbie Join Date: Nov 2008 Location: Grande Prairie, Alberta
Posts: 17
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Ill Measure it @ work today, im gonna be there about 2 hours from now.
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12-08-2008, 10:50 AM | #3 |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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I measured about 3 amps, but somebody else should check too. It will depend on the battery and how far you can pin the throttle.
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12-08-2008, 12:56 PM | #4 |
Newbie Join Date: Feb 2008 Location: Tacoma
Posts: 36
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Thanks, Now I have an excuse to stop by the LHS on my way home tonight. |
12-08-2008, 11:35 PM | #5 |
Newbie Join Date: Nov 2008 Location: Grande Prairie, Alberta
Posts: 17
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7.9 A stalled / 0.080 A free spinning motor @ max voltage 9.2 [freshly peaked battery] 1.1 A stalled servo @ 6.0V receiver pulls 0.060 A ESC has a resistance of 0.02 ohms @ full throttle |
12-09-2008, 03:19 PM | #6 |
Newbie Join Date: Jul 2005 Location: Springville, UT
Posts: 44
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Here's an Eagle Tree graph I did when it was bone stock: |
12-09-2008, 03:20 PM | #7 |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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What was your sampling rate, and battery pack?
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12-09-2008, 03:26 PM | #8 |
Newbie Join Date: Jul 2005 Location: Springville, UT
Posts: 44
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I believe I was set at 10 samples/second and it was definitely with the stock battery. The only mod at the time was Dean's plugs. I was doing a baseline test back in September when I first got it to see if one of my 800mAh lipos would be sufficient. I can e-mail you the original .FDR file for this test and for a longer test as well if you'd like. Here's the graph of another test done the same day with the same setup, but over a longer duration: Last edited by kulangflow; 12-09-2008 at 03:31 PM. |
12-10-2008, 10:01 AM | #9 |
Newbie Join Date: Feb 2008 Location: Tacoma
Posts: 36
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I wouldn't have thought that setup could draw those numbers. Thank you for the details.
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