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Roboherb · 12-24-2010, 10:28 AM

Hi all

Do you really need a 60A esc for 3S? Looking at the specs of the various kits, but thinking about the bare airframe. Thinking about retiring one of my other 450's, treating myself to the new Mini P. Would like to use most of the radio gear from the Trex, servos gyro etc.

I know most will say 4s, and most will be looking at 3d. I'm interested in a 3S setup, and just a few lazy 8's, gentle flying. That's no disrespect for those who 3d by the way, just my level of flying

Interested in the thoughts from those who have the new min P. Would you expect similar flight times?

Cheers

Peter

JustPlaneChris · 12-24-2010, 11:20 AM

Peter, mine isn't flying yet so this is mostly based on past experience and speculation.
Most of the guys flying thus far seem to be using the 16T pinion and high headspeed for short (4 min) high-powered flights.

The Mini P will be a bit harder on the power system than other helis this size because of the gearing. Having only a 120T main gear, it is at a slight mechanical disadvantage compared to the Trex 150T main gear so the motor has to work a little harder.

I suspect if you fitted it with the 14T pinion, the Scorpion 2580kv motor (or similar) you could get 6 minute flights at a reasonable headspeed with a 3S 2200 pack. Equipped thusly, you probably don't need a 60A ESC. A Castle ICE Lite 50 would work great, and for gentle flying you could probably get by with a 35A or 40A ESC.

Hope that helps! I can say thus far in the build it's been a joy.

Roboherb · 12-24-2010, 03:44 PM

Cheers Chris

Might just part with my 450 pro as well, to a guy in the club, invest in one of these.

Pete

JustPlaneChris · 12-24-2010, 07:33 PM

It's been a very enjoyable build so far. The parts quality is top notch, and (like its big brother) it is just a damn clever design.

SidewaysLS4 · 12-25-2010, 08:44 AM

Yep, go with a big Scorpion motor...the gearing will mess with a motor that has a smaller stator then the Scorpion 2221 line. Current draw will actually be less running a Scorpion in this application compared to the common 'efficiency' type of motor.

Currently my Protos is set up with the Scorpion 2221 2010kv motor with 14T, 2250 headspeed, and 8.5 minutes on the timer. I'll either leave it as-is, or move up to the 16T pinion for 2500 headspeed depending on how the mini-Vbar likes it in wind (winter is really getting in the way here, only indoor flying for me now). Running a CC35 and CCBEC on mine.

rablett · 12-25-2010, 01:05 PM

Mine is FBL (Total-G), running a Scorpion -12 (2580kv) w/ the standard 16t pinion. I am running the CC ICE Lite 50 ESC in governor mode at 2700rpm. I am running TP 3S 2600mAh packs and it is drawing just 11 amps / 125 watts / 76% power now that it has a few flights on it. I don't fly 3D and currently have my timer set for 8 minutes which gives me plenty of reserve on the packs.

Roboherb · 12-25-2010, 01:46 PM

Cheers all, all advice noted

Next club night, sale on lol. See if I can move a bit, go for a mini Protos!

OICU812 · 12-30-2010, 05:43 AM

No need for 4S, even with the most aggressive style out there, 3S in 45+C fashion gets it done and then some. A year ago, sure there was an advantage going 4S, now days not so much really.

12-24-2010, 10:28 AM	#1 (permalink)
Roboherb Registered Users Join Date: Mar 2008	3s and ESC, daft questions? Hi all Do you really need a 60A esc for 3S? Looking at the specs of the various kits, but thinking about the bare airframe. Thinking about retiring one of my other 450's, treating myself to the new Mini P. Would like to use most of the radio gear from the Trex, servos gyro etc. I know most will say 4s, and most will be looking at 3d. I'm interested in a 3S setup, and just a few lazy 8's, gentle flying. That's no disrespect for those who 3d by the way, just my level of flying Interested in the thoughts from those who have the new min P. Would you expect similar flight times? Cheers Peter __________________ Eflite MCX, Gaui 550, Eco 8, Voyager E, Mars 480, Dragonus II, Mini Titan, Trex, 3dx450, 3dx400, Blackhawk 400, Zoom 400, Aplus 300, Pigeon 450, Picollo

12-24-2010, 11:20 AM	#2 (permalink)
JustPlaneChris Registered Users My HF Map location Join Date: Jul 2006 Location: Temple, TX	Peter, mine isn't flying yet so this is mostly based on past experience and speculation. Most of the guys flying thus far seem to be using the 16T pinion and high headspeed for short (4 min) high-powered flights. The Mini P will be a bit harder on the power system than other helis this size because of the gearing. Having only a 120T main gear, it is at a slight mechanical disadvantage compared to the Trex 150T main gear so the motor has to work a little harder. I suspect if you fitted it with the 14T pinion, the Scorpion 2580kv motor (or similar) you could get 6 minute flights at a reasonable headspeed with a 3S 2200 pack. Equipped thusly, you probably don't need a 60A ESC. A Castle ICE Lite 50 would work great, and for gentle flying you could probably get by with a 35A or 40A ESC. Hope that helps! I can say thus far in the build it's been a joy. __________________ Chris Boultinghouse

12-24-2010, 03:44 PM	#3 (permalink)
Roboherb Registered Users Thread Starter Join Date: Mar 2008	Cheers Chris Might just part with my 450 pro as well, to a guy in the club, invest in one of these. Pete __________________ Eflite MCX, Gaui 550, Eco 8, Voyager E, Mars 480, Dragonus II, Mini Titan, Trex, 3dx450, 3dx400, Blackhawk 400, Zoom 400, Aplus 300, Pigeon 450, Picollo

12-24-2010, 07:33 PM	#4 (permalink)
JustPlaneChris Registered Users My HF Map location Join Date: Jul 2006 Location: Temple, TX	It's been a very enjoyable build so far. The parts quality is top notch, and (like its big brother) it is just a damn clever design. __________________ Chris Boultinghouse

12-25-2010, 01:46 PM	#7 (permalink)
Roboherb Registered Users Thread Starter Join Date: Mar 2008	Cheers all, all advice noted Next club night, sale on lol. See if I can move a bit, go for a mini Protos! __________________ Eflite MCX, Gaui 550, Eco 8, Voyager E, Mars 480, Dragonus II, Mini Titan, Trex, 3dx450, 3dx400, Blackhawk 400, Zoom 400, Aplus 300, Pigeon 450, Picollo

12-25-2010, 08:44 AM	#5 (permalink)
SidewaysLS4 Registered Users Join Date: Apr 2009	Yep, go with a big Scorpion motor...the gearing will mess with a motor that has a smaller stator then the Scorpion 2221 line. Current draw will actually be less running a Scorpion in this application compared to the common 'efficiency' type of motor. Currently my Protos is set up with the Scorpion 2221 2010kv motor with 14T, 2250 headspeed, and 8.5 minutes on the timer. I'll either leave it as-is, or move up to the 16T pinion for 2500 headspeed depending on how the mini-Vbar likes it in wind (winter is really getting in the way here, only indoor flying for me now). Running a CC35 and CCBEC on mine.

12-25-2010, 01:05 PM	#6 (permalink)
rablett Registered Users Join Date: Jul 2006	Mine is FBL (Total-G), running a Scorpion -12 (2580kv) w/ the standard 16t pinion. I am running the CC ICE Lite 50 ESC in governor mode at 2700rpm. I am running TP 3S 2600mAh packs and it is drawing just 11 amps / 125 watts / 76% power now that it has a few flights on it. I don't fly 3D and currently have my timer set for 8 minutes which gives me plenty of reserve on the packs.

12-30-2010, 05:43 AM	#8 (permalink)
OICU812 Registered Users My HF Map location Join Date: Oct 2005 Location: Grande Prairie, Alberta	No need for 4S, even with the most aggressive style out there, 3S in 45+C fashion gets it done and then some. A year ago, sure there was an advantage going 4S, now days not so much really. __________________ ...Once upon a time there were Nitros, flybars & frequency pins...Shawn

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