250MX or EOX1611 Motor??? Other? - HeliFreak
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Old 04-29-2017, 02:02 PM   #1 (permalink)
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Default 250MX or EOX1611 Motor??? Other?

Okay, I'm about to pull the trigger on the Oxy2 and very excited about it, but I'm not sure what motor to get. I've tried to search, but haven't found the answer.

From what I THINK I know, the 250MX is more powerful, right? I know it's bigger an weighs more, which isn't ideal, but the tradeoff might be worth it? So can anyone give me an opinion on which one? The 1611 is more expensive, but in the end $15 isn't going to change much when you're spending $500 for a micro helicopter.

Maybe I should really just wait for the 1911, but I want to get this now so I can fly before the snow flies. The summer is too short around here.

Oh, and I'm probably going to use the Talon 25
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Old 04-29-2017, 02:23 PM   #2 (permalink)
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Default Check specs.

Align 250 mx
Specification :
●Input voltageC7.4-11.1V 2-3cell Li-Po
●Max continuous current:16/24A(5sec)
●Max output power:Approx. 170w/250W(5sec)
●KV value:3600KV
●Dimension:spindle 2.5xΦ25.5x22.4mm
●Weight:Approx. 33.5g

EOX 1611
Specifications:
Motor kV (rpm/V): 5500
Input Voltage: 3s LiPo/ 4s LiPo possible - ONLY with Governor Management
Peak Current: 30A
Peak Power: 390 watts
Stator Diameter: 16mm
Stator Length: 11mm
Number of Stator Arms: 9
Number of Magnet Poles: 6
Wire Diameter: 0.5mm
Weight: 23.6g
Outside Diameter: 20.5mm
Body Length: 18.5mm
Shaft Diameter: Inner 3mm, outer 2mm
Shaft Length: 29.8mm
Motor Timing: 5 degrees
Drive Frequency: 8 KHz

I went with 250 mx still plenty of power.

James Roberts
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Old 04-29-2017, 02:25 PM   #3 (permalink)
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1611 is more powerful AFAIK
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Old 04-29-2017, 02:35 PM   #4 (permalink)
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Quote:
Originally Posted by mba83 View Post
1611 is more powerful AFAIK
Hahaha you made me look up AFAIK.
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Old 04-29-2017, 02:40 PM   #5 (permalink)
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Quote:
Originally Posted by James Roberts View Post
Align 250 mx
Specification :
●Input voltageC7.4-11.1V 2-3cell Li-Po
●Max continuous current:16/24A(5sec)
●Max output power:Approx. 170w/250W(5sec)
●KV value:3600KV
●Dimension:spindle 2.5xΦ25.5x22.4mm
●Weight:Approx. 33.5g

EOX 1611
Specifications:
Motor kV (rpm/V): 5500
Input Voltage: 3s LiPo/ 4s LiPo possible - ONLY with Governor Management
Peak Current: 30A
Peak Power: 390 watts
Stator Diameter: 16mm
Stator Length: 11mm
Number of Stator Arms: 9
Number of Magnet Poles: 6
Wire Diameter: 0.5mm
Weight: 23.6g
Outside Diameter: 20.5mm
Body Length: 18.5mm
Shaft Diameter: Inner 3mm, outer 2mm
Shaft Length: 29.8mm
Motor Timing: 5 degrees
Drive Frequency: 8 KHz

I went with 250 mx still plenty of power.

James Roberts
So it's less power than the 1611? What pinion are you using and what headspeed are you running? I guess I don't want to get the 250 and regret it and buy another motor later. I've done that way too much in the past.

Oh, and I would like to leave room for the ability to possibly stretch in the future. Who knows?
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Old 04-29-2017, 02:58 PM   #6 (permalink)
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By the way, the figures for the EOX motor are for the max continuous power and current, not peak.

So it's a true 30A / 390W motor, capable of sustaining more than twice the power output of the 250MX motor.

I used an Align motor as I had one around, and the Oxy flies fine with it, but if you're buying a new motor the Lynx 1611 is by far the better choice.
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Old 04-29-2017, 03:06 PM   #7 (permalink)
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Originally Posted by myxiplx View Post
By the way, the figures for the EOX motor are for the max continuous power and current, not peak.

So it's a true 30A / 390W motor, capable of sustaining more than twice the power output of the 250MX motor.

I used an Align motor as I had one around, and the Oxy flies fine with it, but if you're buying a new motor the Lynx 1611 is by far the better choice.
Thanks, that's kind of what I wanted to hear, a definite answer. I don't want to waffle over $15, but I want the better motor overall.

The only thing that comes into question is that new motor that is being developed. (EOX1911?) Wonder if I should go cheap now figuring I'll replace it with the new motor when it comes out. Heck, I'm probably being ridiculous and acting like I fly like Tereq or something, the 1611 should be fine.
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Old 04-29-2017, 05:30 PM   #8 (permalink)
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New motor is for 4S I believe, which may allow for a smaller ESC and some weight savings, but honestly, the Oxy2's a monster anyway with the current motor. I doubt you'll complain if you buy the 1611 :-)
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Old 04-29-2017, 06:28 PM   #9 (permalink)
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Originally Posted by myxiplx View Post
New motor is for 4S I believe, which may allow for a smaller ESC and some weight savings, but honestly, the Oxy2's a monster anyway with the current motor. I doubt you'll complain if you buy the 1611 :-)
The only thing I could see regretting is if I stretch it and want to go 4s to keep the motor from heating up if overloaded. Not sure that would be the case, but I know my 180 cfx motor heats up a lot more stretched.
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Old 04-29-2017, 07:43 PM   #10 (permalink)
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I don't think there's been any release date announced for the new motor...

If you decide to go with the 1611, the Talon 25 will happily govern it on 11t from a little under 4000 to ~5100. (Those are 70% and 95% on the esc.) With a 12t you can get up around 5500 if you really like to bang.
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Old 05-02-2017, 03:15 AM   #11 (permalink)
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I went with the 250MX motor but I am still wondering whether the 180cfx motor would have been a better choice for me. I can't find the specs for that motor but the 250MX is probably a lot heavier and I am just starting to learn 3D.

I couldn't find the EOX in stock and I am on a tight budget, thats why I was looking mainly at the 250MX and the Blade motor. I am not sure why the blade motor is not mentioned as recommended motor, while the 250MX is? Anyways, I read that a lot of people are using the motors from their Blades.
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Old 05-02-2017, 05:24 AM   #12 (permalink)
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I would think that motor would be a bit on the weak side but nothing says you can't use it. I wouldn't recommend many things made by Blade to use on an Oxy in general.

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Old 05-02-2017, 08:18 AM   #13 (permalink)
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Originally Posted by Hobee View Post
I went with the 250MX motor but I am still wondering whether the 180cfx motor would have been a better choice for me. I can't find the specs for that motor but the 250MX is probably a lot heavier and I am just starting to learn 3D.

I couldn't find the EOX in stock and I am on a tight budget, thats why I was looking mainly at the 250MX and the Blade motor. I am not sure why the blade motor is not mentioned as recommended motor, while the 250MX is? Anyways, I read that a lot of people are using the motors from their Blades.
I would think the Blade motor would not handle 190mm blades very well, it does the stretched 180 okay, but it does get much warmer than with the 155mm blades.

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Old 05-02-2017, 10:25 PM   #14 (permalink)
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The 180 cfx motor merely work. My oxy 2 is 326 g with 850mah battery, and flight time 5:30 min around 4k rpm, I just hovering. Motor very very hot and can't even touch the holder screws. May be headspeed too low.
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Old 05-02-2017, 11:00 PM   #15 (permalink)
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326g is extremely light for the O2. It's easy to have one pushing 350g unless you make lightweight decisions on every component. 4000 RPM is also a quite low HS, although fine for someone looking to do relaxed circuits. I'm sure a little more is possible with good collective management.
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Old 12-12-2017, 02:30 AM   #16 (permalink)
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anyone else that uses the 250mx or used it/upgraded care to comment on the performance on the oxy 2?
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Old 12-12-2017, 02:58 AM   #17 (permalink)
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I built mine with a Leopard 3,900 kv motor which has a 1911 stator similar to Lynx's newer 1911 motor. I never tried the 1611 but seriously doubt it's capable of anything near the specified 390 watts. That's 16.5 watts per gram of motor, there's just no way. The Leopard motor is rated at 220 watts, 28 amps, and 3s only but I've run mine on 4s the entire time I've had it and it makes plenty of power.
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Old 12-12-2017, 06:40 AM   #18 (permalink)
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Quote:
Originally Posted by Danker16 View Post
anyone else that uses the 250mx or used it/upgraded care to comment on the performance on the oxy 2?
I think it depends on your flying style. Comments have been as you would expect from the specs: 1911 > 1611 > 250 MX, so the harder you smack, the more likely you are to prefer a little more power. At low HS on the stretch, there also seems to be some preference for the 1911 over the 1611.

I'm sure the guys who have flown them will have more specific experiences to share.
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Old 12-12-2017, 08:35 AM   #19 (permalink)
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Quote:
Originally Posted by 2slow2g View Post
I built mine with a Leopard 3,900 kv motor which has a 1911 stator similar to Lynx's newer 1911 motor. I never tried the 1611 but seriously doubt it's capable of anything near the specified 390 watts. That's 16.5 watts per gram of motor, there's just no way. The Leopard motor is rated at 220 watts, 28 amps, and 3s only but I've run mine on 4s the entire time I've had it and it makes plenty of power.
+1

the 1611 motor has plenty of power for 3d flight on the stretch oxy 2 with 210 plastic blades.

It could probably handle short burst of 30 amps but no way it can handle 30 amps continuous.

When I do sustained fast elevator tic tocs for 10 to 15 seconds and the motor has no problem keeping the heli from dropping. However I can hear the governed headspeed drop slightly. If the 1611 is capable of 30a continuous the headspeed would not be dropping slightly in fast sustained elevator tic tocs






.
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Old 12-12-2017, 08:43 AM   #20 (permalink)
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I run the talon 25a esc and it stays cold with the 1611 motor so there is no way the stretched oxy 2 is pulling above 25amps in 3d flight for longer than a second or two. It may however spike above 25a on hard moves.

I am running 4400 governed headspeed on 10 tooth pinion and that is enough for anything I can throw at this heli.

I also discovered if I do not allow the headspeed to ramp up to the full goverened haedaspeed before taking off there is a decent drop off in power during flight.
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