Turnigy L2855-2100 EDF Outrunner (900w)

 crashtest101 11 points

Gday flybug Im running a 12 blade with this motor and get max of 44 amps on a full 5 cell 2700 35c battery the average is about 42 or 43 so a six cell setup is out as the max for this motor is 42amp. Hope this helps

 flybug111 25 points

thanks crashtest101 , I did test mine on 4s 1300 40c plush 60a fresh batt and pulled 37A and 533w mind you the exhaust is at 55mm.Just wasn't sure if it would take 5S and opening the exhaust to 60mm plus I'm sure will help too.Just thought the watts were a bit low. Got it mounted on the HK grey EPO jet kit ( F16). Sure sounds nice .Now waiting on my 2200 5S to arrive. thanks for the help.

 sidd232 650 points

try 5x5 or 6x4

 sidd232 650 points

you can but the efficiency of motor will be very low, this is intended for 6 cells, for 3 cells you need something above 3500kv for 70mm fan or 3000kv for 10 blade fan

 jhova1717 162 points

I get my bearings from boca bearings. Com but you have to measure your bearings to find the rite size

 ruppwf 54 points

I don't know what is the best but a good setup is 64 mm 10 blade with this motor.EDF were made from 64 mm edf plastic housing (HKEDF64),shaft (109-7B-4)and DPS Series 64mm EDF 10 Blade Replacement Impeller Measured values are with nano-tech 6S 1300 mAh 45C and 45A controller: 20,6 V �* 44,3 A �* 955 W �* 1050 g thrust Because the T-45 has only 55mm exhaust you may lose some of thrust. You can also use a 7 blade edf with same setup parts which should not have loss of thrust with 55mm exhaust.

 Tartago 485 points

For EDF you need around 200w per pound, so this motor will give enough power for your project

 jhova1717 162 points

Just get the same brand motor the one that says 600w next to it . This motor is overkill for you!

 jhova1717 162 points

Plus with the three blade you need high kv this is way to low 3300 and up for the 3 blade fan

 jhova1717 162 points

Medium but the ntm motors are great mine come very tough spin so I put bearing oil on them before I put them in a edf or a regular plane setup... Try it

 Michiels 1 points

Hello ! I.ve made the same choice ! Everything seems perfect ! Can not try the setting yet, because my a10 is in work in progress ! Have à* good day É*ric - France-

 Ben 31 points

How did you both go with this ? I have just started building my LX A10 but I am only using 40 amp esc on 6s with the changsun 10 blade fans.

 cbots99 4 points

I made that choice because I had the Esc's in hand and want them to run cool. I would atleast go with 50amp esc's this is what is what they come with ready to fly. 40 amp might get too hot for 42 amp max draw

 Ben 31 points

Im not too worried about teh amp draw , the esc's Im using will burst to 55amps , Im not planning on flying her flat out and Im hoping that twin 70's on a model weighing in at less than 2.5 kg's will fly well at half to 3/4 throttle. Unlike some that require wot to keep them in teh air.

 jhova1717 162 points

I never believe specs on a esc why chance it ! Go higher just to protect your investment! Never bank on the burst rate

 udaypraveen 36 points

Jack xD the motor above is over powered for the config you have mentioned. i prefer using the motor i mention PRODUCT ID: L2226-3000 which saves the weight of the aircraft and produce enough thrust

 Madrc 79 points

bit too small for escooter mate :)

 Tartago 485 points

Totally small! Go for one of the bigger Turnigy prop drive motors.

 makeloveinisrael 53 points

t-rex43
why not take two diferant esc's
im new in this stuf but i know that motors send current back one to the othere if they are connected. and back to the esc that can buren it out.and if the esc's have a bec in them you should cut the in one of them. i wouldent take nano i think the blue regular turnigy batteries are better. you can use 5s 5000 mah or 6s 5000mah . if the setup of two motors wont pass 70A one battery will be enouth

 KaosKane 1442 points

for the l2855 i can confirm 6 pole motor i do not have the other HTH

 Buzzlightyear71 9 points

Thanks Kaos, i did have it as a 6pole on the datalogger for tests,but wanted to be sure as i did get some great results even though the amps are high, and i think the other will be a 6pole also.

 KaosKane 1442 points

I used the fan from my Meteor scres to mount motor are 3mm across x 4mm long

 KaosKane 1442 points

this motor is 2100kv the motor u had is 3500kv u need to go to a 5cell or 6cell lipo. I have this motor in a Dynam meteor and on 6 cell it is a bullet. but on 5 cell it is a nice sports plane speed fast but not to fast...i have only tried 4cell on test and would fly like a trainer. so short answer get a 5 or 6 cell bat and go Fly ur bullet

 gianluca 11 points

On 6s when i start he explosion the fire avvolgiment! I have not good look is difected

 majik01 2906 points

Kaos .. from the Alpha Jet 70 mm listing "Motor: 2750kv Brushless Outrunner." If indeed the stock is really 3500 KV, then this L2855 is way slower - which explains the lower output at 4S. But even with a higher cell count the vibration will cause the EDF unit to self destruct even after the fan blades are balanced.

 KaosKane 1442 points

The Stock METEOR 70mm motor is 3000kv so 4cell (14.8v) is 44400 revs the this 2100kv motor i use 6cel so 2100kv x 22.2v = 45520 so it is just as fast or faster with this motor and i can fly until i get a sore neck and land and have 3.5v per cell left *} The stock motor on 5cel was a hoot with 55000 revs fan speed then i put stock METEOR 70mm on 6 cell for 66600 revs at no time did the fan explode or self distruct the end came when the motor mount face plate melted from the extreme heat generated by the 6 cell batt the fan lost a blade but the motors magic smoke got out lol HTH

 Gavman 36 points

I am using this motor in my Skyfun Jet along with a 100amp Turnigy Deluxe ESC and 2200 4s batteries and a 7x5 prop - it is the best combo possible. Even better than using the 2836-3700 motor with 2200mAh 3s batteries and a 5x5 prop. All runs cool and speeds are around 180km/h. Also no probs with prop balancing like on the 2836-3700kv motor.

 KaosKane 1442 points

good answer pleas apply a credit Not to me i didnt do anything

 koren9 15 points

Hi there ,
I'm running this motor in my RClander F-16 using the 4 blades fan selling here , I'm only getting 550W and 25A draw ... is that make sense ? i'm running Medium timing , what the timing should be ?

 ATX10 30 points

You probably what to set the timing on high, To get better result.

 jhova1717 162 points

No it's the battery probably need higher c rating with this motor and higher mah read up top many people had this problem

 makeloveinisrael 53 points

its exactly the same motor from the inside accept the low kv that can let you get more power and the ventalation openings

 KaosKane 1442 points

The Lx motor i got in my saab viggen VT,EDF is closer to 3300KV and gets hot on 5cel and too hot on 6cell. in Meteor 70mm...This motor 6cell all day and no heat problems my fav motor right now

 delperena 11 points

Hello KaosK, Please tell me more about your Saab Viggen VT - it is my favorite. Is it available for purchase? Thanks, Del

 KaosKane 1442 points

it was 880 mm wingspam and 1015 mmm long ran on 4cell 3600kv motor (very nice) and it had Thrust Vectoring i got it from Bannana H. out of stock now..I am trying to convince get HK to get some Thrust Vector Jets but it doesnt seem to be registering .. u have to see them to believe true 3d flying from an EDF. get one if u can

 KaosKane 1442 points

Hk now sell vector thrust units seperatly i will order for my meteor *}

 makeloveinisrael 53 points

I think a 60 can be fine as long as it dosent warm up to much
in 5s 70mm fan this motor will take onley 35 amp

 Glacier Girl 87 points

Well here's your specs on the CS70 10 blade fan, with inlet ring. 4S 3300 25C Vm: 14.18 Ap: 35.32 Wp: 534.5 Thrust (kg): 1.3 5S 4400 65C Vm: 18.82 Ap: 54.70 Wp: 1067.10 Thrust (kg): 1.8 6S 4500 25C Vm: 21.86 Ap: 71.80 Wp: 1642.7 Thrust (Kg): 2.4 Note these are a reading off of a meter of highest attained of each item in the 3 specs.

 gianluca 11 points

Non va!!!!!!

 KaosKane 1442 points

thanks Glacier Girl www.link

 PeterVau 67 points

2.4kg on the CS10 70mm ??? Wow, that seems to be a lot ! But the 71A and 1642W seems about right for that - if comparing to lower blade count fans. The 1.8 kg on 5S for 54A and 1067W sounds too much - when compared to average quality 70mm's. I will have to give it a try and see!! Those numbers seem exceptionally good - lowish power for very high thrust.

 ruppwf 54 points

2,4 kg thrust on 6S is a dream to wish. What 70mm edf modell will take such a big and heavvy 745 g lipo ? And fly like a jet not a bullet? I compaired Sun Change EDF 70 mm 10 and 12 blades with this motor . controller : 80 A lipo : nano-tech 6S 2250 mAh 65-130 C (390 g) 10 blades edf - 20,8 V - 53,2 A - 1134 W - 2,0 kg thrust 12 blades edf - 19,8 V –** 56,6 A - 1148 W - 2,1 kg thrust - In flight with 10 blades edf and 6S the motor became very hot –** too hot for longer life, smells burnt. - With 5S lipo (nanotech 5S 2200 mAh 65-130C) and 10 blades edf in flight the motor became quite warm but not too hot. Measured values are: 10 blades edf - 18,6 V - 44,9 A - 857 W –** 1,7 kg thrust - 12 blades edf - 18,2 V –** 51,8 A - 954 W - 1,9 kg thrust ** With 4S lipo (nano-tech 4S 2250 mAh 65-130C) measured values are: 10 blades edf - 13,7 V - 28,2 A - 403 W –** 1,06 kg thrust ** 12 blades edf - 13,3 V –** 33,0 A - 459 W - 1,2 kg thrust **For 4S better take Turnigy L2855-2800kv. All measures were made with free exhaust.

 KaosKane 1442 points

Turnigy nano-tech A-SPEC 2200mah 6S 65~130C Lipo Pack (AUS Warehouse)
SKU: 9210000074 $59.98 WEIGHT : 492g | IN STOCK

This is lipo i use not a 745g but gives massive power for high speed HTH

 Charlesd 746 points

yeah for .5sec another word hex no.. Don't try it. We should be happy we can get this small motor within a 70mm unit. Stay on 6cell max..

 makeloveinisrael 53 points

i think it depends what fan you have and what battery you have
i dontthink this motor would buren out from enny reasons axept overheating
so you can try it on 7s and see if it gets hot
you can also drill holes in the botom of the fan so the motor could get more ventelation
and it depends if its winter or summer and in what country you live
its also not such an expensive motor
its not a mega motor that causts 150$
and these motor start smoking bfore they actualy buren out
the motor isentthe most efficiant motor and in 7s it will probebley take 1 to 1
but i promiss you this motor is hard to kill

 magnusEl 1238 points

Yes, no problems runing it on 4s. But you are going to get a lot less power.

 davecrash 110 points

Probably not enough power on 4S to to carry your plane.

 mksubaru 56 points

actually i was tinking about puting it in my skyfun...

 rocketscience 319 points

I was thinking skyfun too.. but with 2 3s batteries in series. Might be a touch heavy. Ive tried 4s with a 2700kv motor and 6x5.5. It was decently fast but it can go faster.

 mksubaru 56 points

i was flying mine with a DYS 2600kv and a 6x5 on a 1300mah 3s, it was also decent but i want it faster, plus the motor and 35amp were a little bit hot in the end, and i was only using 1/2 stick. i have a 1300mah 4s, and a 60amp esc ... so... i dont know...

 davecrash 110 points

The 6S low KV motor will use less amps so you can go with a lower MAH LiPo. It's a balancing act.

 Charlesd 746 points

I found a 1300mah 6cell battery.. Do a search on that.. You'll find the exact one I am going to use.

 Gavman 36 points

2200mAh battery with a 100 amp ESC and a 7x5 prop - that is a near perfect balance. Believe me I have tried 3 other motors and this is the best - fastest, most power, and longest flight times. Win, win, win!

 Straight Up 754 points

The weight carrying capacity is related to the power. 900W is pretty good, but not exceptional. The advantage of the relatively low Kv and associated high voltage is lower current = less losses to resistance.

 seedo 103 points

i will not buy this motor unless i want it in a big jet preferably twin EDF jet

 JarradS 569 points

It will fit a 70mm fan

 Ujjwaana 167 points

Wow!!! 2200KV *900Watts!!! This is an excellent option for large Pusher Jets!! This motor should have come long, long time back! Nice addition HK... good job, and even incredible price. Would wait for actual review number.

 WEI HSIANG 2 points

good.motor.6s.ilike

 midrian 28 points

What would be a good 70mm edf to combine with this?

 erh7771 300 points

This looks JUST like an LX Outrunner, they are claiming around 3.4pds of thrust on 6s with < 40amps... HKs EDF70 and T-50 (when they have them in stock) would be great. I tested a 2100kv inrunner with T-50 fan and got 54oz thrust\40amps\6s. This thing will scoot around a number of jets on 6s 1800mah 40c with good flying time.

 koren9 15 points

How about this - High-Performance EDF Ducted Fan Unit 4 Blade ? will it be good for this motor ? I want to put it in a Airfield F-16 .

 erh7771 300 points

You're prolly talking about the Change Sun fan with the intake ring...it's load is less than the aforementioned fans. I don't know what the amp draw and oz of thrust would be on 6s but I know it'll be lower.

 *MoNSteR* 841 points

Actually, this **-> *******www hobbyking www.link the LX motor. It is similar, but not exactly.

 *MoNSteR* 841 points

Stupid HK blocking links even to their own site. Product code HK90139 , is the LX motor, not this one. It is similar.

 davecrash 110 points

Can't go wrong with a Wemo or HET

 Charlesd 746 points

You can do some modifications but the JET TIGER will be a excellent try-out jet to try this motor on. *you WILL need to enlarge the edf unit location to support a 70mm though.

 makeloveinisrael 53 points

HK90139 is the regular 2839 motor
even if it was in low kv stil it wouldent be agood motor because it heats up
this motor has exelant cooling as air passes directly thrue the motor

 Glacier Girl 87 points

This motor with the CS 70 mm, 10 blade fan on 6S4500 25 C pack. Here's the max meter specs for it. 21.86 volts 71.8 amps 1642.7 watts 5.25 POUNDS of thrust! Not to shabby for a fan and motor for $26.00 I'm dropping a pair of these in my Eflite Airliner on 4S. The pair combined pull 70 amps, just over 1000 watts, and 5.75 pounds of thrust. Motors aren't even getting warm at that.

 jetmaster 50 points

Glacier Girl,

I was also looking at the same setup for my A330 2 x 2 meters weighing4.5 Kgs. Do you think it would be a good choice using 4S battery/Fan?
What would be a good and reliable ESC to use accordingly?
Thanks.

 Glacier Girl 87 points

10 Pounds! Wow must be a big one. Go with the CS fan, and the Turnigy XK 2850-B motor, 2800 kv on 4S. 63 amps/approx 1000 watts/1.6 kg thrust, per motor. Put you at roughly 200 watts per pound. As for an esc, I'd go with an 80 amp to be on the safe side. Maybe something like the Turnigy Plush. I've had no problems at all with them.

 jetmaster 50 points

Glacier Girl,

According to manufacturer 1 Kg trust (40% of its weight) is all what is needed to fly this airplane with no issues, the setup they are offering is an HET combination of fan,motor and ESC which produce 1 Kg thrust per motor.
Consequently no need to go overkill as intention is to achieve scale flying only, this is why i thought that 1.2 kg thrust would be more than adequate for this application, therefore, appreciate your input according to your valuable experience in this respect.
Thanks, Regards

 Glacier Girl 87 points

Ok then if that's all you need, yep go with it. If you find it lacking, and your esc will handle it, (the Turnigy plush will), you can always up the cell count with no other changes to get you more. Honestly that's how mine is set up, for 4S, but then my liner weighs 4 pounds, but if I want more I can just up the cell count. 5S will pull around 55 amps, close to 1100 watts, and 1.8kgs thrust. Times two. 6S, 72 amps, 1650 watts, and 2.4kgs thrust per fan.

 ruppwf 54 points

Motor L 2855-2100kv in 70 mm EDF 5 blades** 6S 2250 mAh 65-130C ** measured values: 23,2V –* 27,2A –* 637W** 5S 2200 mAh 65-130C ** measured values: 20,1V –* 20,5A –* 417W** 10 blades** 6S 2250 mAh 65-130C ** measured values: 20,8 V - 53,2 A - 1134 W - 2,0 kg thrust** 5S 2200 mAh 65-130C** measured values: 18,6 V - 44,9 A - 857 W –* 1,7 kg thrust** 12 blades** 6S 2250 mAh 65-130C ** measured values: 19,8 V –* 56,6 A - 1148 W - 2,1 kg thrust** 5S 2200 mAh 65-130C ** measured values: 18,2 V –* 51,8 A - 954 W - 1,9 kg thrust**