hacker Style Brushless Outrunner 20-22L

 Alex 747 1 points

Yes, you can use 2S battery with prop 12x4,7

 petcanu 53 points

www.link

 petcanu 53 points

giantshark site in england.you know what to add for england site? *****

 Hank 41 points

A good alternative www.link more expensive but a huge leap in quality makes up for the increase.

 sirbow2 12 points

what props?

 pardus 266 points

Below 160°*F or 71°*C (too hot to hold) is a comfortable maximum, over 200°*F (93°*C) will start to blacken the laquer on the wire around the stators and potentially demagnitize the magnets.

 sirbow2 12 points

replied to the wrong person *). dont use 11in props with these(heat issues). 10in work great.

 pardus 266 points

MrAeroKey asked for max temperature not props, I replied to his question not yours :)

 sirbow2 12 points

i was also replying to him on mine :D

 Dmitry 12 points

try to read a manual for this www.link you can find what do this sound mean. I think you just need to calibrate the throttle and to play with trimming of throttle down or up.

 Piermaria 22 points

1 Turn on the trasmitter; 2 Move the throttle stick at the max; 3 then connect the battery; 4 wait some seconds, ear beep-beep; 5 move the throttle stick to minimum; 6 now ear a number of beep = the number of cells you use then a long beeeep. Now it's all ok. Right? If no you must read www.link

 fb39ca4 19 points

It should be the stuff in the pic.

 MarceloMMY 93 points

The shaft is 3.17mm. i have one , i know. Good flies.

 r/c vish 57 points

3.175 to be precise..use a 3mm prop adapter with the hole bit bored or filed from inside. will fir perfect

 munsaf 291 points

Thats a bit much, 11x4.7 would be the biggest prop I would run. I am sure you could probably use the 12's but the amp draw would be high, run time would be diminished, and the whole esc motor system would be working at there max capabilities. I have a few quads running these motors, and I am running 10x4.7 with great success and way too much power.

 Milan 5 points

I recommend 10x6 3-blades propeller. Very stabble.

 sirbow2 12 points

my motors came with one extra shaft each. But, here is a replacement shaft for 20-_L motors: www.link

 Per 3 points

I bought mine here: www.link

 edwin46 104 points

I can't see the link. Try to write just the name of website without www

 Per 3 points

Argh! - Stupid system! Search ebay for "1/8" x 5/16" x 9/64" Teflon Sealed Bearing" and you'll find them. They are great, was easy to replace, and 3 out of 4 motors run perfectly smooth with them - unfortunately, the shaft of the 4th is worn out, so i need a new one...

 edwin46 104 points

Search on HK for product id: "A20-L" and you will find some spare parts for this motor. BTW thanks for the answer.

 Per 3 points

Thanks! Ordered a set *-)

 Ettore 6 points

is a copy of the original hacker A20-22 is great, I bought it

 romoloman 34 points

If with a single battery you want to power all the 4 motors at the same time, then the setup is not correct, as 15A*4=60A and your battery is rated for 60A, even if you are still in the admitted range you are at the maximum so you will likely shorten the life of your batteries...

 price 1 points

Thanks, I guess I am stuck with my order now, I would like to change it but it is impossible to contact anyone at Hobby King. I can always hook two of the packs in parallel for proper amps.

 CrashinDutchman 281 points

should be good enough...

 Stefan 36 points

What propeller should I use with this motor and Diablo 3D???? 11.4,7 or 10.4,7

 coldplus 5 points

I used these engines and ESC for my quads and they are excellent, a 1100mAh lipo is quite small but with 25C can provide the power, it will be empty real quick though....

 sirbow2 12 points

mine didnt like 11x4.7 much. i think a 10x4.7 should be good.

 CrashinDutchman 281 points

No, it doesn't. The prop can be fastened with accompanying nuts on the threaded axl.

 __edd! 226 points

Thanks Dutchman!

Tell me one thing, which prop saver could fit the 3.175 shaft of this motor? The only one they have now (the blue one) is out of stock...

 CrashinDutchman 281 points

It seems that most prop savers are in back order. I was going to suggest to get a 3mm and drill the hole a little larger, but they don't have any 3 mm savers. I don't think a 4mm will work, will it?

 CrashinDutchman 281 points

There are prop savers on a famous action site (which I won't name). They are the same as the blue ones from Hobbyking (probably the seller bought them from HK, HK is out of stock and he marks the price up). Search for '3.17mm Prop Saver w/ Adapter' on that famous auction site

 __edd! 226 points

I have the 20-28 which happens to have the same shaft and comes with a prop saver.
According to the reviews, some received it with a prop saver. This is strange* I'm a BK few and keep them for later use...

 kamashi 85 points

No it doesn't include prop saver, but you can try the 317MPRPSVR item.

 dea90 6 points

the motor have the prop saver...it come with 3 o-ring

 Greg 66 points

The motor comes with a "dual shaft" meaning it is fixed to come out of the rear of the motor, and a shaft mount allows you to attach a shaft to the other end of the motor, but no prop savers anymore.

 saulo 36 points

yes! The base engine is attached to wall mounting of fire, spine screwed to fix the propeller and prop saver for the more secure the propeller

 JAYHUC 39 points

yes. it will work quite well

 Greg 12 points

I think a 12 would be a bit much for this one. Need at least a 36mm diameter motor for a 12

 gas wolf 51 points

if you install a 12" propeller the risk is the burning of motor. The adsorbed current is too much.

 172amd 8 points

Not enough info to answer. 12" diameter and what pitch? How many cells you plan to use?

 prateek 66 points

will work

 Dave 63 points

Thats a bit much, 11x4.7 would be the biggest prop I would run. I am sure you could probably use the 12's but the amp draw would be high, run time would be diminished, and the whole esc motor system would be working at there max capabilities. I have a few quads running these motors, and I am running 10x4.7 with great success and way too much power.

 Ewan 8 points

I believe it'll exceed its maximum current rating at wide open throttle with a 12" prop. The APC 10x4.7 prop is a good choice for quadrotors using this motor. The motor dissipates ~160W at wide open throttle with a 10x4.7, which is right on its maximum power rating.

 Happyflyer 34 points

I'm using this on a Y6 copter, with 10-4.5 propellers.
It have no problems lifting off with this set up, i would not use a 12" on this motor, the flight time will be shorten a lot I belive.
This motor will be perfect in quadrocopter set up, it is quiet and well ballanced.

 GIORGOS 8 points

No it's to big, prop max is 11' but you must be to carefull, 10' is perfect.

 u4eake 70 points

Best is a 10" prop. On 12" it will draw a lot more amps, get hot and not provide much more thrust, just more heat.

 UndCon 17 points

I use this motor with 10*4.5" props and I have great performance on my Quadcopter see ****undcon**** for more...

 porfuse 14 points

I would say go for the Turingy 2213/22. They are very simliar to the KDA20-22L. The 2213/22 pretty much match it in ever aspect. Check out www.link for a detailed comparison.

 Andrea 20 points

For fun jet is better a 3200kv or plus and 4,7x4,7 prop!!! With 3s and 30a Esc! Is amazing

 Ravi 5 points

YOU CAN MOUNT BUT IT SHOULD FIT AND IN ADDITION THE ELECTRONICS MUST BACK IT UP ( I.E., BEC, battery , etc)

 nemo4all 35 points

Yes you can surely use a prop saver on this motor... The only thing you will have to do is reverse the motor shaft... Then the shaft will be extra from the other side instead of what it is now... Then you can put the prop saver on it...:)

 Ravi 5 points

yes it can be

 nemo4all 35 points

No plz do not power it with a 4s lipo...Else you will fry the motor... :(

 porfuse 14 points

the 20 20L has a 1053Kv rating.

 Sterling 74 points

Not sure about the shaft, but you just hook up the wires and check the rotation. If it's spinning the wrong way swap any 2 wires. That's it.

 a_pilot 85 points

Are you refering to the picture where you see the prop shafts on front and back? You wouldn't actually do that. I think the picture is just showing you that you can use either side of the motor.

 drdiscus 143 points

I have used one in an eflite ascent it has clearance to run. Yees has a spare shaft. The motor can turn a 9x6 folding with ease on 3 cell lipo. Need a 20 or better yet a 25 amp esc.

 Beaufighter 1808 points

Probably no one that have tried... See a couple in the reviews that are using 12x6 folding (one on 3S), and a couple using 2S, so if you go 2S and a 12x6 it will probably work out ok! Maybe the SF will be a bit too tough, it may need an E prop. Use a powermeter and test before flying is my advice:)

 drdiscus 143 points

the motor on 2 cell would best turn an 11x5.5. If you have a watts up you can tell better. My opinion is it will turn a 12x6 but it will heat up.

 webber 1614 points

My advice is to use this motor with 3S, if you are up to save weight, I can tell you that 10x47 and 15C lipos work fine. This motor is a screamer (in its class, when is used on 3S)

 Eseck90 211 points

You dont.

 chench 15 points

Has anyone successfully reversed the shaft on this motor? ie made it stick out the other end. I tried taking off the circlip and loosening the setscrew, it was still too tight . . .

 sirbow2 12 points

chench, take off the c-clip and pull on the black mount and on the bell. slides right off. search "Reversing a Hacker Style Brushless Motor 20-22L." should be first page link.