My Goblin 700 and its batteries...
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My Goblin 700 and its batteries...
Hey guys,....I am by no means new to RC Heli's, built, owned and flown many 450's and 500's but never a 700 size electric heli and I have recently hit a wall. I am now the proud father of a Goblin 700 that is nearing completion and all that is left to purchase the batteries. This is where I need your eperience (and thanks in advance for any given).
I have searched the forums on this and many websites but found nothing specific to my question....How do I match the best batteries to my specific motor, esc and flying style? I know it sounds kinda like a nub question but this is my first 700 size heli and I cant quite wrap my head around the numbers. Here are my specs;
Scorpion Commander V 12-50V 130A ESC (OPTO)
Specifications
[TABLE="class: spec"]
[TR]
[TD][/TD]
[TD="class: right"][/TD]
[/TR]
[TR]
[TD]Max Continuous Current[/TD]
[TD="class: right"]130 Amps[/TD]
[/TR]
[TR]
[TD]Operating Voltage Range[/TD]
[TD="class: right"]12 to 50 Volts[/TD]
[/TR]
[TR]
[TD]Max BEC Output[/TD]
[TD="class: right"]No BEC[/TD]
[/TR]
[TR]
[TD]On Resistance[/TD]
[TD="class: right"]0.68 mOhms[/TD]
[/TR]
[TR]
[TD][/TD]
[TD="class: right"][/TD]
[/TR]
[/TABLE]
Scorpion HK-4035-560KV
[TABLE="class: spec"]
[TR]
[TD]Stator Diameter[/TD]
[TD="class: right"]40 mm (1.57 in)[/TD]
[/TR]
[TR]
[TD]Stator Thickness[/TD]
[TD="class: right"]35 mm (1.024 in)[/TD]
[/TR]
[TR]
[TD]No. of Stator Arms[/TD]
[TD="class: right"]12[/TD]
[/TR]
[TR]
[TD]Magnet Poles[/TD]
[TD="class: right"]10[/TD]
[/TR]
[TR]
[TD]Motor Wind[/TD]
[TD="class: right"]8 Turn Delta[/TD]
[/TR]
[TR]
[TD]Motor Wire[/TD]
[TD="class: right"]23 - Strand 0.29mm[/TD]
[/TR]
[TR]
[TD]Motor Kv[/TD]
[TD="class: right"]560KV RPM / Volt[/TD]
[/TR]
[TR]
[TD]No-Load Current (IO)[/TD]
[TD="class: right"]2.24 Amps @ 10v[/TD]
[/TR]
[TR]
[TD]Motor Resistance (RM)[/TD]
[TD="class: right"]0.014 Ohms[/TD]
[/TR]
[TR]
[TD]Max Continuous Current[/TD]
[TD="class: right"]100 Amps[/TD]
[/TR]
[TR]
[TD]Max Continuous Power[/TD]
[TD="class: right"]4200 Watts[/TD]
[/TR]
[TR]
[TD]Weight[/TD]
[TD="class: right"]460 Grams (16.22 oz)[/TD]
[/TR]
[TR]
[TD]Outside Diameter[/TD]
[TD="class: right"]49.98 mm (1.97 in)[/TD]
[/TR]
[TR]
[TD]Shaft Diameter[/TD]
[TD="class: right"]5.98 mm (0.235 in)[/TD]
[/TR]
[TR]
[TD]Body Length[/TD]
[TD="class: right"]61.8 mm (2.43 in)[/TD]
[/TR]
[TR]
[TD]Overall Shaft Length[/TD]
[TD="class: right"]100.0 mm (3.93 in)[/TD]
[/TR]
[TR]
[TD]Max Lipo Cell[/TD]
[TD="class: right"]12s[/TD]
[/TR]
[TR]
[TD]Peak Current[/TD]
[TD="class: right"]120A (5 seconds)[/TD]
[/TR]
[TR]
[TD]Peak Power[/TD]
[TD="class: right"]5200 Watts (5 seconds)[/TD]
[/TR]
[TR]
[TD]Motor Timing[/TD]
[TD="class: right"]5deg[/TD]
[/TR]
[TR]
[TD]Drive Frequency[/TD]
[TD="class: right"]8kHz
[/TD]
[/TR]
[/TABLE]
Now I know from reading the literature that I can use up to a 12 cell LiPo but how do I decide what's best in terms of mAh? 5000 would obviously last a bit longer, but would it run my electronics too hot? Does a single battery pack have any discernable advantages as opposed to dual 6 cell packs? My flying style is very light 3D. I usually only fly once or twice a week at the most. Any thoughts or <pointing me in the right direction> would be much appreciated.
I have searched the forums on this and many websites but found nothing specific to my question....How do I match the best batteries to my specific motor, esc and flying style? I know it sounds kinda like a nub question but this is my first 700 size heli and I cant quite wrap my head around the numbers. Here are my specs;
Scorpion Commander V 12-50V 130A ESC (OPTO)
Specifications
[TABLE="class: spec"]
[TR]
[TD][/TD]
[TD="class: right"][/TD]
[/TR]
[TR]
[TD]Max Continuous Current[/TD]
[TD="class: right"]130 Amps[/TD]
[/TR]
[TR]
[TD]Operating Voltage Range[/TD]
[TD="class: right"]12 to 50 Volts[/TD]
[/TR]
[TR]
[TD]Max BEC Output[/TD]
[TD="class: right"]No BEC[/TD]
[/TR]
[TR]
[TD]On Resistance[/TD]
[TD="class: right"]0.68 mOhms[/TD]
[/TR]
[TR]
[TD][/TD]
[TD="class: right"][/TD]
[/TR]
[/TABLE]
Scorpion HK-4035-560KV
[TABLE="class: spec"]
[TR]
[TD]Stator Diameter[/TD]
[TD="class: right"]40 mm (1.57 in)[/TD]
[/TR]
[TR]
[TD]Stator Thickness[/TD]
[TD="class: right"]35 mm (1.024 in)[/TD]
[/TR]
[TR]
[TD]No. of Stator Arms[/TD]
[TD="class: right"]12[/TD]
[/TR]
[TR]
[TD]Magnet Poles[/TD]
[TD="class: right"]10[/TD]
[/TR]
[TR]
[TD]Motor Wind[/TD]
[TD="class: right"]8 Turn Delta[/TD]
[/TR]
[TR]
[TD]Motor Wire[/TD]
[TD="class: right"]23 - Strand 0.29mm[/TD]
[/TR]
[TR]
[TD]Motor Kv[/TD]
[TD="class: right"]560KV RPM / Volt[/TD]
[/TR]
[TR]
[TD]No-Load Current (IO)[/TD]
[TD="class: right"]2.24 Amps @ 10v[/TD]
[/TR]
[TR]
[TD]Motor Resistance (RM)[/TD]
[TD="class: right"]0.014 Ohms[/TD]
[/TR]
[TR]
[TD]Max Continuous Current[/TD]
[TD="class: right"]100 Amps[/TD]
[/TR]
[TR]
[TD]Max Continuous Power[/TD]
[TD="class: right"]4200 Watts[/TD]
[/TR]
[TR]
[TD]Weight[/TD]
[TD="class: right"]460 Grams (16.22 oz)[/TD]
[/TR]
[TR]
[TD]Outside Diameter[/TD]
[TD="class: right"]49.98 mm (1.97 in)[/TD]
[/TR]
[TR]
[TD]Shaft Diameter[/TD]
[TD="class: right"]5.98 mm (0.235 in)[/TD]
[/TR]
[TR]
[TD]Body Length[/TD]
[TD="class: right"]61.8 mm (2.43 in)[/TD]
[/TR]
[TR]
[TD]Overall Shaft Length[/TD]
[TD="class: right"]100.0 mm (3.93 in)[/TD]
[/TR]
[TR]
[TD]Max Lipo Cell[/TD]
[TD="class: right"]12s[/TD]
[/TR]
[TR]
[TD]Peak Current[/TD]
[TD="class: right"]120A (5 seconds)[/TD]
[/TR]
[TR]
[TD]Peak Power[/TD]
[TD="class: right"]5200 Watts (5 seconds)[/TD]
[/TR]
[TR]
[TD]Motor Timing[/TD]
[TD="class: right"]5deg[/TD]
[/TR]
[TR]
[TD]Drive Frequency[/TD]
[TD="class: right"]8kHz
[/TD]
[/TR]
[/TABLE]
Now I know from reading the literature that I can use up to a 12 cell LiPo but how do I decide what's best in terms of mAh? 5000 would obviously last a bit longer, but would it run my electronics too hot? Does a single battery pack have any discernable advantages as opposed to dual 6 cell packs? My flying style is very light 3D. I usually only fly once or twice a week at the most. Any thoughts or <pointing me in the right direction> would be much appreciated.