Top 3 Mistakes When Selecting a Brushless Motor
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- Опубліковано 23 лип 2024
- Determining the best suited brushless motor for an application is no easy task. There are a lot of numbers written as specifications by manufactures that contribute to the confusion. And no one goes in to detail on how to make sense of all these numbers.
Well the big ticket item here is that all these parameters must work together to achieve a happy power system. Get one of these parameters wrong and you may run in to trouble.
The first mistake when selecting a brushless motor is the selection of the motor Kv value. The motor Kv value is responsible for the total RPM per volt of electricity applied. Too much can result in failure.
The second mistake is trying to run too much voltage to the motor without considering the total amount of load. Voltage does not kill the motor but if you demand more RPM by increasing the voltage and you do not change the load, you can ultimately destroy your brushless motor.
The third mistake when selecting a brushless motor is related to the physical size of the motor. By not selecting a large enough motor for the task, you run the risk of burning out the motor. The size of the motor is responsible for dissipating the waste heat energy. Too small and your motor will not be able to deliver the demanded amount of power. Similar to above this also will result in the same destruction of the brushless motor.
Keep these in mind when selecting a brushless motor in order to optimize the reliability of the system as a whole.
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#BrushlessMotor #RCmotor #RCexplained - Наука та технологія
The videos you make are great. You're not exactly saying anything that's new, but your videos are concise, and the point is easily understood. Thank you!
Hey, thank you for taking time to comment! Appreciate it!
Hello
I have a omnibus xrotor f4 g2 fc and 4 individual platinum pro 30 amps esc no bec 12000hz. What's the right protocole to use them in betaflight make them work with the fc or there's others special sitings. Or just it won't work.
I have been learning about RC cars for about 2 years, and I thought I new a lot. I'm trying to make the switch over to a cheap brushless motor and you are making it so much easier.
Thank you Madhavan Muru!
Hey, awesome videos. I’m new here and maybe I just missed it, but I’m struggling to sort through motors and I don’t really understand the advantage/disadvantage of the motor diameter versus the motor length when concerning the performance. Is there a reason one dimension would be more important or will a longer smaller motor perform as well as a shorter bigger motor with similar specs?
Welcome aboard! Motor diameter vs length is best to be selected to physically fit your application. In terms of performance, there is not a major difference between a larger diameter vs a larger length. Overall a larger motor in terms of volume or mass will perform with more power output potential.
@@RCexplained Very good to know. I had suspected, but listening to your point on heat dissipation I was considering if the longer length motor with a similar number of turns would have more space between each turn internally. I imagine that difference would not be noticeable, but I never assume with electricity. Thank you for your input and keep up the awesome videos!
can you advise me what kind of motor that i need to look brushless sensored or brush for drifting a lot of product i dont want to make mistake any suggestion every one im new with rc i dont know anything help please
I have been able to drift using a brushed motor, brushless sensorless and brushless sensored motor. It really depends more on your setup then the type of motor. A better focus for success is having the correct traction, power and weight distribution.
So a 2s lipo on my buggy 3650 motor what KV 2300 or 3100? Or even 3900?
That is a significant difference. 2300 vs 3900kv. You'll want to know the potential speed you can hit with both kv options. You'll also want to compare against what others are running.
Wicked job explaining, very concise & informative. Really digging all the content on your channel btw, thus had to sub.
Thank You for the comment and sub.
Hey ,i have a question ,,will a battery that supplies 3.700 kv and motor that is spending only 1.400kv blow up or what else will happen?,, Please answer
What batteries would you recommend for a 1/5 scale running a max 5 esc and leopard 58113 1050kv motor?
2s 3s max why would you go for 4s or higher if the % to burn your esc is higher than
@@White1sox Why use such underpowered batteries in such a powerful system? That's like putting 87 octane gas in a nascar racecar. I was just curious what type of response I would get. I run 8000mah 14.8v 4s 100c x 2 (8s) in my dbxl-e 2.0.
@@White1sox bro it can take way more than that
Nice video!
Thanks DH!
Great vídeo but I have a quick question for you can a 3660 size can brushless motor 3300kv work on 6s or its to much what do you think? Its for my 1/18 scale car
no, too much. that is already overpowered on 2s for 1/18. not that it will burn but drive train won't hold basically.
@@knoopx check out my latest vídeo of my 6s build 1/18 scale wltoys
@@rcmodcars7759 let me know when your diffs/gears give up
@@knoopx okay btw im running plastic diff gears the only thing that is metal are the mod1 spur gear and pinion
I have ordered 4600kv motor 40A ESC and 3S 2200 40C lipo is that a good combo ? For a race boat but not jet boat and the max rpm is going to be almost 50000rpm
Hello that's far too many RPM for a fast electric boat. There's a video on the channel outlining picking components for a surface drive RC boat.
@@RCexplained then what is the best rpm motor ? Is 36000 rpm good or still to high ?
There's a really good video on the channel that goes in to these details. 36000 is still high but can work.
Thanks for the video ! Nice one.
Thanks for the Comment!
I use ecalc and a watt / amp meter for all setups always test on the bench first 👍
Right on. That's the way to do it!
Ok so newbie here i purchased a goolrc 4300kv brushless motor with a 60a esc also ordered another esc 60a from hobbywing a higher quality one just incase is this overkill for a primarily off road buggy 4wd 1 10 scale its my first time upgrading to a brushless system
It's hard to tell without details such as the specific RC you have, gearing you are using, battery pack you will run and size of the motor.
@@RCexplained the rc is vrx octane xl with a 3650 size motor 4 pole 12t as for the gearing no idea hope this information helps cant I just use any 2s or 3s 5000mah battery ill be using it for off-road bashing mostly thanks in advance
Your channel is going to go a long way, very good job you are doing.
Thank you for the comment Iqbal. Really appreciate it.
Am losing ma money, In 2 months 3 ESC been damaged. Could you plz explain more about amps? Ex: I have motor with 40A, 1-what would happen if I use ESC with 50A or 60A?
2-what would happen if I use ESC with 20A or 30A?
I have replied in your other comment.
Nicely done! You're really quite good at this. (BTW: Greetings from a fellow Canadian [edmonton])
Hey Ed, thank you so much! Great to hear from you.
Canada yeah!! Calgary here
@@corcor9001 Good to hear from you, man! Sorry about your hockey team (nudge-nudge).
@@marward yup you deserve that one
What would be a good brushless motor for smt10
What performance are you looking for out of your smt10? What speeds do you need?
RCexplained close to maybe 25 mph. Also a motor that doesn’t overheat quickly. I have a 3930k motor and it gets a little warm on full throttle within like 30 secs
@@TortugaBruv Have you considered a castle power system? Stock gears in this truck doesn't fair well with higher amounts of power output.
RCexplained I haven’t. So do I need to upgrade gears? I have the new release
To be optimal my engine must turn between 24,000 and 32,000 revolutions per minute?
Optimal RPM depends on the application. 24k-32k sounds good for most fast electric boats.
@@RCexplained ok , thank you ;-)
@@RCexplained and for monster truck ?
What would you recommend on a 3000kv motor brushless and brushless esc
It will depends on where you are going to install it on. This is what this video is all about
My rc boat setup 2948 4880kv motor.. Esc 90a..but my battery to hot temperature wht the problem sir..
What battery what propeller?
Are 4400kv and 9T any good to a rc car?
Hi Goldgamer, it really depends on the RC Car and its gearing as well as the voltage you intend to run.
God will make sure you get more subscribers ;-)
Thanks!
nice tech info in ur vids. tip- use props. its r/c more folk will tune in if ur preview showed some type of r/c stuff. use car or boat or just have the components to point to
Thank You Bermuda guy for you comment and tip. I'm trying to increase the amount of things I can show during a video, although I am finding it challenging.
The only way I know to figure out the "Demand" of a motor is to place it in the situation that it will be used in. Then check wether the motor is hot or not in the first pass.OR connect it to an amp meter run the boat, plane, car, whatever and see wether it falls into the motors parameters. The thing that throws a wrench into the whole thing is in and out of the water or jump with a car. For example: A water pump jet direct drive for an RC boat. Water jump the boat. The action puts the motor into free run then plunge it back into the water under max load. How in the world to you take account for this action. Amp draw should be on the extream end. Does it happen all the time...NO just when you don't expect it. For example: I have a 40mm jet drive I'm powering with a 4 pole 4074 1400 Kv brushless the boat itself is 36 inch long shallow draft "V" hull. Max. amps of motor 60Amps, max voltage 40V dc max power 2400w. New boat never run with power plant. 1400Kv x 14v.+- = 19,600 rpm. Voltage is OK I am in parameters, Amps draw Don't really know. What is the best way to say OK this is the motor for this criteria?