Turnigy 450 H2218 Brushless outrunner 2100KV

 Gary 3001 points

This motor has a 3.17mm shaft.

 danikronos 660 points

this bike is designed for helikpter has very high speeds, despite its light weight is not suitable for sailplane,have lower engine speeds

 Kristian Hjorth 31 points

yes this motor works awesome with an airplane but you will have to get a new 4mm shaft for it. on a 6x4 on 3s I've got about 800g of thrust, But I'm going to test it with a 4s and post the results. 7x5 is better for 3s at 40A

 Clark 6 points

I have used this motor extensively in model warship combat, both for pump and drive motors. It works GREAT with a HK 30A car ESC with 2S LiPOs, although in the pump I use a HK 60A aircraft ESC (only has to turn one direction)because sometimes current draw on the pump goes up (i.e. if you are pumping more water, more current drawn). For a race boat, if you want to go totally overkill, 2S or 3S and a HK 45A car ESC. **Note - waterproof the car and aircraft ESCs with epoxy for marine use, I've used mine for 2 years with no glitches**

 Runping 70 points

No, It can't. And it is not suitable for jet pusher set-up. I tried and the motor came apart.(no lock nut for the shaft) I putted the motor back and installed it backward,a puller, in my jet and it works perfectly fine.

 ace6190 6 points

Thanks Runping

 gianhulk 162 points

To start with is fine, because it absorbs little and vàmolto well. I also use it on 70mm edf and that's fine.

 muchomor84 174 points

Pinion gear for what? If HK-450 with 3s setup you need about 20-21T. This is good motor for 5s or 6s setup for 450 class: 5s -> 12T 6s -> 11T

 ns012xps 27 points

I have HK450GT. What you mean by 5s or 6s? My apologies I'm new.

 Bezold 39 points

He is referring to how many LiPo cells your battery has. Each cell adds 3.7 volts to your battery's output. 2s=7.4v, 3s=11.1v and so on. Since this motor has a relatively low KV (rpm per volt) rating, you will need a large pinion gear to increase your rotor speed. For instance, I use a 3550kv motor with a 13t pinion and a 3s battery pack in my exi450. If I wanted to have about the same head speed that I have now with this motor (you dont lose power because this one will generate more torque at the same speed), I would need at least an 18 or 19 tooth pinion. Or I could increase the speed by using a higher voltage battery, a 5s pack would be about right I think. (these are all approximate numbers, I just figured roughly in my head for an example)

 Jan 6 points

Heli/Airplane/Gearratio. Please ask again. best wishes from Munich.

 2Doggs 186 points

It's really aimed at 4s use on a 450 heli, in which case you would use a 15t or 16t pinion, 17t for 3d. HK sell 3.17mm pinions all the way from 10t to 15t, then 17t and 20t. I might try a lower KV motor with a larger pinion to see if it runs quieter.

 fathead431 575 points

the order of the wires does not matter with brushless motors. plug all 3 in at random. if it spins the wrong way, switch 2 wires.

 Gary 7 points

Connect them any which-way, doesn't matter. If it runs backwards, swap any two wires. It's 3 phase.

 gultch-vic-aus 2 points

just plug in all connectors if it spins in reverse just swap any 2 connectors

 ns012xps 27 points

Question answered. How do to close discussion?

 Luong Pu 32 points

This motor is BLDC Three phase unlike the brush one that use direct current only pos & neg . These motor must used special speed control for brushless 3 phase , the 3 wires from motor jump to the 3 wire from brushless (3 phase) speed control if the rotation is not as U want normally for front drive turn is CCW for push drive turn CW , only change one pair any one , and the rotation will change be sure to put the right side of prop front and push drive wind must go back make the plane go ahead

 muchomor84 174 points

Are you crazy?? This is brushless motor. God...

 Jan 6 points

what do you use it for (which model)

 Runping 70 points

You can use it for 450size heli, or use it as a jet motor for model up to 900g.

 Luis 9 points

Sorry you can't close discussions ccz other noobs (like me) mighthave the same question

 HellyFlyer 1249 points

lower kv is will use less amps and will give you longer flight time

 MarkD 211 points

some guys are running 6s now.

 Hans-Georg 32 points

This motor is working well with half-symetric rotorblades like Spinblades and low rpm. With a not too small pinion gear, the sound is really quiet. A great advantage is, that you can run the low rpm setting with 70 - 80 percent throttle, this is the optimum for most speed controllers. This low headspeed is used for just cruising around or scale flying with good flying times.

 Realkorky 250 points

The point is, higher rpm motors efficiency reduces. So while you think you are saving flight time your losses (caused by low efficiency) increase. Is there really a scientific comparison of this motor with same brand but lower rpm ones?

 udidit 17 points

****

 Hans-Georg 32 points

Yes, udidit, you are pretty right. This motor is a good match with the hobbyking 4 and 5 blade rotor heads for 450 heli. Running a 13 teeth pinion with the 4 blade head with 1800 rpm can easily lift a flying weight up to 1000 gramm. Sometimes it is better to use a 14 or 15 teeth pinion for some more headspeed.

 spitfire2010 640 points

i tried this on another motor in the series and it took some work to acheive. You will need to press it out. can be done with a vice and a piece of tube but might be best to choose another motor.

 bellephonye 15 points

i tried this on another motor in the series and it took some work to acheive. You will need to press it out. can be done with a vice and a piece of tube but might be best to choose another motor.

 Crampy 184 points

I've had a look and by the looks of it you're not able to reverse the shaft. Well not easily anyway.

 ipin17_aero 37 points

you cannot reverse it because there is a lock pin on top of the motor shaft

 jockstrap 122 points

Be VERY CAREFUL - KV rating has NOTHING to do with input voltage.. this motor is a 4S max motor and melt your setup if you try using it on 6S

 tonybooger 193 points

What pinion would you recommend for use in a 450 on a 3cell set up?

 udidit 17 points

I'd say probably 15-18 tooth pinion to speed up head if running 2 blade head.

 Larry L 125 points

I had a similar setup on a TMF F-16 very fast !

 Thatslife78 52 points

5X5.5, 2100 KV, 10 volts (3 cells 30C).......176 KPH, say 130 to 150 KPH max in real situation, but care to amps (more than 40). And care to total weight : motor plus ESC plus (1300ma 35C 3S lipo or 2400 20C 3S lipos for example, to suit power of motor correctly)

 GOVNR 12 points

It looks like you will have to use an 18 tooth pinion to get a decent headspeed on a 450 with 3s bats. Does this seem right?

 NumnutChriS 472 points

I broke my funjet´s motor and replaced with this - with a 7x6 balanced APC it pulls 46A, 530W static on 3S. The funjet is not so fast anymore, but the setup works well.

 Egg Man 26 points

How to you disassemble this motor?