I ran this motor on a slow fly 10/7 4 cell a week ago and burned it up in the air, seized and landed, was very hot. So you are right. When I talked to Flitetest the gal said I was a bit over on the prop, which I admitted. She also agreed to give me a free motor anyway, but I definitely will stick to 10x 4.7 or smaller and 3 cell. Flitetest is a great company, one of the best things that has happened to this sport in the past 10 years.

@RCVideoReviews

3 жыл бұрын

Thank you so much for this feedback. You know I really put it out there when I offer an assessment and while I wish Flite Test nothing but massive success, I am also feeling good that my advice is not off the mark. Thank you again for the feedback.

@Pilot_Unknown

3 жыл бұрын

@@RCVideoReviews I have flown my Flite Test Sea Duck with twin 2218 motor on a 4s 2200mah 30c "video on my channel" a few times with gem fan 10x4.5 props never noticed heat on landing but have only flown that in cold and cool weather and usualy on 1 or 2 3S 2200's. Great video on the motor now Im sketched about that 4s pack

@RCVideoReviews

3 жыл бұрын

@@Pilot_Unknown If you aren't pounding the motor you probably don't need to worry, but I wouldn't spend much time at high power levels on 4s with that prop.

U definitely scared the crap out of me. I literally sat with my jaw dropping and thinking I was going to be out a frigging motor! Thanx for doing testing for me.

@RCVideoReviews

4 жыл бұрын

Bazinga! Thanks for the loaner.

Another great video! Thank you for testing this motor. I finished my test stand today and your videos are helping greatly to understand how to pair these motors with props.

@RCVideoReviews

4 жыл бұрын

Awesome Bryan. Thanks for taking the time to write. I appreciate it. Good luck with your test stand. Experiment a lot!

Thx for the review. I do want to comment that I have 8 of theses motors on maybe 50 planes over 3 years. Flite Test style foam board planes aren’t expected to be long life, so I build fly, crash, salvage and build again. I fly combat as well with these. Still using the same motors without a single failure. Lots of crashes and even submerged. I fly 4s lipo with 9 x 4.6 usually. If I run a 3s I run a 10 “ prop. Never had a shaft or bell problem. I fly APC props because they can handle the abuse. Yes they get hot to the touch if you run hard. But never had internal damage. The reason I fly their motors must primarily to support them. And I guess I am too lazy to fix something not broke. Again, nice job and thanks!

I've been running a 11x5.5 for a while now. on my HK hummer . ix12 telemetry is telling me im hitting 35amps at peak . seeing this video im dropping to a 10x5

This series of Reviews and Testing, Best in class. Thanks for the Videos!

@RCVideoReviews

3 жыл бұрын

Thanks for that. Unfortunately, KZread doesn't seem to care for these types of videos so I stopped making them. Sad really because I always felt these were among the more useful bits of information I put out there.

@michaelfargnoli3501

3 жыл бұрын

@@RCVideoReviews That's very unfortunate. Your channel is the go-to for me in regards to data based and unbiased tutorials. Too the RC community, I would hope that would appear obvious. Keep up the great work Somehow...Someway!!

I recently built a FT Master Series Corsair and bought their C-Pack, which has the Radial 2218 in it. I'm glad I found your video, hence I tried the motor on the 9x7.5x3 prop on the bench (mounted to a piece of wood in the vice. With 4S it got hot after running less than 10 seconds at full speed and took 15 min to cool down! I chose the prop due to another build here on youtube where the person said they used it, their overall weight was around 1000g with a battery. My build came out a lot heavier than his due to some mistakes I made and the light glass fiber coating I did, resulting in 1360g with a 2200mah 4S battery. Looking at the values you showed in this video my motor would have fried immediatly... I just ordered a motor from another brand, with respect to your video on how to choose power systems, that can handle the 1360g with a 3S. I also bought a watt meter which will help me determine whether the prop will be ok on the new motor. Thank you very much for this video!

@RCVideoReviews

3 жыл бұрын

You're welcome. I'm glad you found the video and that it helped you figure out how to tackle your scenario. That makes the work worth the effort. Good job on getting that watt meter too. That will become a valuable tool if you want to get your power setups done right.

Such a complex and fascinating subject .... Aren't we lucky to be able to share thought and ideas and experience !!! I was talking to a buddy about the subject and he felt a 3second bench test was enough to see the amp draw and that the central section of the motor gets little cooling from prop wash on the bench test, but more cooling in flight....I question how much more cooling in flight due to cavation......I feel John's method makes a lot of sense as there's multiple factor's to a "sustainable " outcome , a favorite is how friggin hot and cold the temperature can be..... thankyou John for an awesome eye opening video .....my brain really hurts 😉😎

@RCVideoReviews

Жыл бұрын

Glad you found the information useful. Thanks for the comment.

Thanks for all the reviews..love your videos

@RCVideoReviews

4 жыл бұрын

Thanks for watching!

I asked you to test the FliteTest radial if you got the chance. THANK YOU!!!!! Many times I don't know why but something makes me go huh.

@RCVideoReviews

4 жыл бұрын

You're welcome! Overall it seems like a decent motor. It is price competitive and the quality is on par with all the other decent quality motors I've used. It did produce 12% more thrust than the Cobra equivalent based on Cobra's numbers which are accurate to a fault--but it did it at the expense of current. My only two gripes about this motor: 1) Don't like the proprietary prop shaft. Would rather have a bolt on or 4mm/5mm pressed shaft so I can replace them. 2) Don't like missing AMP limit. That's just not cool in my eyes. Lots of people can figure this stuff out on their own but lots cannot.

Thanks for the video tests. I run FT motors on small foam board FT planes. I use 3s 2200 with the recommended 9v4.5 APC props and these motors are great. Period!

@RCVideoReviews

20 күн бұрын

I prefer Sunnysky v3s. Efficient, super powerful, and they hit their numbers every time. I don't use too many small motors these days, but if I did--I'd check Sunnysky, T-Motor, Dualsky, Badass, Cobra, Leopard all before that thing.

informative and very useful review, thank you. Subscribed.

@RCVideoReviews

3 жыл бұрын

Awesome, thank you! Thanks for subscribing. Enjoy the channel.

I agree, the lack of specs is annoying and has come up quite a bit on social media and I have seen Flite Test acknowledge it. As mentioned here in the comments Flite Test has a no questions asked warranty on these. I don't own any but on many on the social media channels that l follow people are using them as Flite Test suggest with no problems. I agree having a replaceable shaft would be better, but perhaps that's also covered under their warranty. Regardless when designed properly, a hollow shaft can be just as strong as a solid one, most of the strength is on the outer diameter. Having an accurate temperature reading IMO is a good tool in determining loading on a motor. Any quality motor should be able to handle 150-160 F. Some people will go higher and some motors can handle it. Obviously continuous use at higher higher end of specs can affect the long term reliability. Magnets loose strength, bearing lubrication deteriorates, windings overheat etc. Some planes I will be comfortable overproping, some not. How hard I'm on the throttle, airflow, ambient temp etc will be factors. I usually bring my IR thermometer out to the field with me and keep an eye on things. This is just my opinion and what I do and we must do what were comfortable with. Hope all is well and happy flying in these crazy days!

@RCVideoReviews

4 жыл бұрын

Hey Steve, As always, appreciate your comments and insights. I need to get a heat gun I think to compliment my testing toolkit. Thanks again for your comments.

While I understand your desire to have a current rating on the motor, I prefer to have the continuous power/wattage rating of the motor as this will be easier to monitor despite variations in supply/battery voltage 2,3,4S etc. It tells you the maximum heat dissipation of the motor under normal operations and lets you size the prop appropriately.

@RCVideoReviews

Жыл бұрын

Wattage is a product of current and voltage. Current is more important because the design specs of motors are based on current ratings. Wire diameter, resistance, Kv, voltage--all designed around current not wattage. Wattage is a convenient equalizer across multiple voltage/current applications. I've never sized a motor based on watts, always based on current.

My _guess_ is that they don't list the current because they already have a power pack bundle with "safe" ESC and prop choices. Thus, they assume newer builders will generally stick to the recommended options, and that more experienced builders will be shopping around more anyway. Glad I found this video, though: I was looking to put together a twin-motor build, and I don't want to risk cooking something off. I guess I'll just have to shop around for some lower KV motors in that range, maybe go for those leopards after all. Doesn't seem like a bad motor, just one that needs to keep a smaller prop than what my model would like

Thanks for the video. I was just wondering why I couldn't find Amp ratings on the Flitetest motors.

@RCVideoReviews

4 жыл бұрын

You're welcome. I can live with less info *IF* it's a package deal--plane, esc, prop. But when it is sold standalone, amp data is critical. Hope the video is helpful for you.

Send a link of this video to FliteTest. Real #'s are usually hard to find with "some" brands of motors. Good stuff. Keep truckin'. AirHammer out!

@RCVideoReviews

4 жыл бұрын

Thanks for checking-in.

Thank you for this. I have a couple of these motors and have wanted to use them in a wing but could not find much info on what is best suited prop. They sell it with the 10x4.5 but I want to run 4s. Glad I did not.

@RCVideoReviews

2 жыл бұрын

Agreed, it works well in the range of reason using the setups I show.

I bought one just to see how it worked and same thing no data on motor I called hobby store just to make sure it could do 4s they couldnt find data either but it showed on there site it could long story short hobby store replace both motor and ESC because I cooked both great review John take care ps tell Siri i said hi lol

@RCVideoReviews

4 жыл бұрын

I think a smaller prop with 4s would be fine, but 10x4.7sf on 4s is a no-go. It did put out some respectable thrust values though. Glad you got your motor replaced. Siri has been chiming at weird times lately. I get the feeling Apple is keeping an eye (ear) on me.

I've been flying one with an apc 10x4.5mr prop on 4s in a profile 3d plane. Never had a problem and I use full power lots. Also on my sons legacy we run a 11x4.5apc on 3s again no problems that plane is over a year old. I think your amps are a bit high because this is a static test they will unload in the air and the amps will come down a bit. Maybe 10x4.7 is just to much pitch and I stumbled upon the magic number of 10x4.5 for 4s.

Gonna throw mine on the Hobby King Crusader.

I'm late to the party, but I ran a 10/4.7 slow fly with a 4S battery on this motor (HK Hummer EPP airframe). I pushed it hard doing 3D flying and it got VERY hot. It was hot enough to burn my finger when I touched it. These results are spot on, the 10/4.7 prop should definitely not be used. You might get a few flights out of it, but it while fail due to excessive heat. I have swapped this motor over to a smaller airframe and running a 8/4.5 on 3S. I can run it all day long now and it only gets warm to the touch. Overall, it's not a terrible motor and gives decent power. However, you can buy a much more powerful motor that will perform well with a 10/4.7 for around the same price.

@RCVideoReviews

2 жыл бұрын

Spot on. I know some people stand by that prop size but I just refuse to run motors that hot.

Great video!!! Love the approach taken. I know bench tests are obviously made on a bench, but is it possible that actual amp draw (and of course wattage) will be reduced on an actual plane flying? Because the prop drag obviously gets lower with higher forward velocity (because propeller's angle of attack is reduced). Actually on a high pitch propeller at high RPM you may even stall the prop airfoils, which would reduce propeller drag while on a bench, but not on an aircraft.. Maybe that's the reason they advertise the 10x4.7 as a good prop selection? I mean, on full scale aircraft like a C152 you can get at most 2400RPM at max power under brakes, but while flying you can firewall the throttle and get 2550RPM out of the same engine! I'm fairly new to the hobby, but trying to understand the physics involved in this.

@RCVideoReviews

3 жыл бұрын

Yes, bench testing is considered static whereas flight is considered dynamic because in flight the prop does unload for multiple reasons. There is no good answer to run 10x4.7 on this motor with 4s, it's simply too much. I would never do it and others have confirmed burned out motors using that combo. Stick with 3s for that prop on this motor.

I recently did some thrust testing on 4s with different prop setups. I tried 7x5E, 8x4E, and 10x4.5. Keep in mind that the numbers are probably not accurate since i had 4 motors running the plane into a kitchen scale mounted sideways on a wall, but i found 7x5E to get around 3.2kg total thrust at 100%, 8x4E around 4.7kg thrust at 100%. Both got pretty burn your hand kind of hot from staying at 100%. I was too scared to run 10x4.5 full power so i stopped at around 4.4kg at 75%. It was definitely in part because it was brief and didnt go 100%, but the motor didn't feel hot afterwards. The power system is upgraded from the previous which gave about 2.2kg at 100% and was underpowered and barely enough to slowly get off the ground. I'd guess that 3kg thrust is plenty to fly the plane comfortably. Would it be smarter to run 7x5E, 8x4E or run 10x4.5 on lower throttle? Which would be more efficient? Edit: i should mention they are running on 35A ESC. Seems dangerous considering you drew 36.28 on 9x5. I probably wouldn't go full, but im assuming this means 10x4.5 is a bad idea? What if I reduced the maximum throttle via transmitter so I wouldn't accidentally break the ESCs? Are longer props at lower speeds more efficient than smaller props at high speeds?

@RCVideoReviews

3 жыл бұрын

I've already done some ESC testing which shows running higher diamter/pitched props at lower throttle is bad for ESCs. It's better to use the right prop for the job. Thrust is only a partial measure. You also need to ensure your amp draw lines up with specs of the motor. Larger diameter props spinning slower are generally considered to be more efficient.

@farlandduck4463

3 жыл бұрын

@@RCVideoReviews Thanks for the advice, I should mention that the implied motor is the motor being reviewed by this video, Flite Test Radial 2218 1180kv.

Have there been any tests outside of the video where 8x4 or 8x5 props were tested with 4S? I've been wanting to use a 4S with this motor just for more oomph.

@markk.crawfordjr.3319

2 жыл бұрын

I run this on a MAS 8x4 on 4s. I use it in a Hobbyking Crusader 30e. I was around 22 - 26 amps (cant remember for sure) and had a little over 1kg of thrust

I have this motor and run 10x4.7 SF on 3S and it is Ok. I tried it on 4S and just as you point out, it gets way too hot even with short bursts off full throttle. I asked about this on the Flite Test forum to John Overstreet (the main designer of their master series planes) and he claimed they run 10x4.7 on 4S on all his planes. I just don't see how, they would definitely burn up in my opinion. Great review and I appreciate the data. It should be a given for anyone selling motors to give these specifications plus you would think it would save them a lot of money not having to replace motors due to over propping.

@RCVideoReviews

3 жыл бұрын

I imagine if you spend limited time flying 10x4.7 with 4s it would last for some time, but I think that setup is asking too much of the motor. I can rev my truck at 7k RPM and it will do it, but that doesn't make it good for the truck.

Wouldn't it run cooler in flight? If your running it in dead air it won't have enough airflow avoid overheating when spinning a 10x6 prop. But might it be able to do it in flight? (On 3s)

@RCVideoReviews

3 жыл бұрын

Dead air? The prop is pushing 60mph air over the motor. Being in the sky isn't really material IMHO.

@flyingfools47

3 жыл бұрын

@@RCVideoReviews not at the very base of the prop. The hub covers a significant portion of the front end of the motor, so not all of the motor is getting wind from the prop. That's why it warns against running the motor for more than 60 seconds while stationary. Plus the loading on the prop is reduced when at flight speed due to reduced angle of attack, so it won't pull as much current either. I agree that it should not run on a 10 inch prop on 4s, however I think it would still fare better in flight than on the ground.

I crashed this moter 2times in a pull configuration and the motor was undamaged (the hole in the motorshaft was undamaged as well). Both crashes destroyed the entire plane exept the esc, the reciver and thr motor. So the craches werent soft.

@RCVideoReviews

2 жыл бұрын

The point is the shaft is not serviceable. So if it does bend, that's the motor.

@sirfinnscott9287

2 жыл бұрын

@@RCVideoReviews true. What I am trying to say is that the motor is built strong enough, that a crash bad enough to bend the shaft would destroy other parts before. This means only that the hole is not a weakpoint in the construction of the motor. I have no experience in repearig electric motors, so I hope i didnt oversee something obvious.

that lack of amp info is annoying... but one key thing the FT motor has is a warranty that they will stand behind... crash it, they replace it... burn it up they'll replace it... email FT themselves for specifics cause sadly they don't seem to have much info out there on the warranty stuff :-/

@RCVideoReviews

4 жыл бұрын

It is good they stand behind their products. My concern obviously is keeping the plane in the air. You make one good point I've failed to quantify in testing--support. There is value in good support. I think most people are willing to pay a little extra for the assurance that if something goes wrong, the vendor will do their part to make it right. The good news on the motor is that we now have some data to work with and it can be tweaked from there. That is the reason I covered the strategy of using motor weight to help define the ballpark. It's a good place to start. Thanks for the comment.

Does anyone know how to install the props with this motor, im confused because im trying to sandwich the prop with spacers and the nut that comes with this motor. Please help.

@RCVideoReviews

4 жыл бұрын

I'm not sure I understand the problem. Can you not get the nut on? What kind of prop is it? I was able to change APC Electric props on this motor at will with no fitment issues.

@sabic_

4 жыл бұрын

@@RCVideoReviews nevermind i figured out it was a locknut and that i needed some pliers, but thanks for responding

@RCVideoReviews

4 жыл бұрын

Ahhh. Yeah I commented on that in the video. I’m not a fan of lock nuts on props. Glad you got it figured out.

any ideas on a 10x4.5? that is what they come with

@RCVideoReviews

4 жыл бұрын

I don't understand your question. I wasn't aware they came with a prop. Flite Test recommends a 10x4.7sf. This is directly from their page: store.flitetest.com/flite-test-radial-2218b-1180kv-brushless-motor-flt-3036/p846362 "HQ 10 x 4.7 (both 3S and 4S)" Are you asking about a 10x4.5sf prop? Is there such a thing? If so, it would probably be ok on 3s. The 10x4.7sf prop was ok on 3s but a little hot for my taste. 10x5 is the right prop for this motor IMHO.

Based on your comparisons with the cobra, it looks like the motor is closer to 1355KV.

@RCVideoReviews

4 жыл бұрын

It might be. I'm just in doubt on the accuracy of the Kv measurement on the stand. I may have to find a way to calibrate it. Most motors I test come in higher than spec on Kv.

I'm using this motor for a year now with 4 or 3 cell battery with 9/6 or 10/7 prop without having any issues. The only issue that i have is with FT esc which is 35amp getting warm very quickly. By replacing the esc to 45 amp solved the issue . I love this motor and i crashed it a lot since I'm a new pilot ... No damage to the motor photos.app.goo.gl/dxqty2c3RpN2VVDP7

@RCVideoReviews

3 жыл бұрын

Good to hear a long term flight report. I wouldn't fly it on 4s with a 10x7 on any plane I cared about though. 4s with 9x6 would probably be ok.