Introduction summary of how to Pick an RC Brushless Motor, ESC, LiPo 

Thanks a lot my friend. You shed a lot of light on this one area I needed to understand. I'm coming back to the airplane hobby after may years and things have changed. Thanks again.

Good advice, good video! I've been into RC for years, and your video's always teach me something! As an extra, I would like to add that most power systems up to and including 6s (22.2 nominal voltage) are reasonably priced. Once you go above 6s, prices generally jump up.

Thanks for the video now i know what need to refurbish my boat 👍🏿🚤

Hello, thanks for another helpful video! I have a couple of questions/video ideas: 1. How can we calculate the approximate power required to push a car of a certain weight at a certain speed. I personally am aiming to push a 4 pound car to 30mph. 2. Please explain the relationship between voltage, current draw, and power consumption over the course of an acceleration from 0 to top speed for a sensored motor? You've explained that higher voltage = greater rpm = greater top speed (given the load is reasonable). However, when a car accelerates, the voltage being fed to the motor isn't increased. Instead, voltage is constant and current is the variable. If I am correct about this, how does the current vary throughout an acceleration? Also, how does current draw vary with velocity when the car isn't accelerating but maintaining a constant speed. Ex: Lets say that a car has a top speed of 30mph for which it draws 10 amps. When this car travels at 15mph is it approximately consuming 10 amps? I understand that the current being fed through the poles is being switched at varying rates to acheive different speeds, but does it require less current to switch the poles at lower frequencies? (I am mainly interested in sensored motors) Thanks again!

Hi Ryan, I’ve found your videos really helpful. Propper technical explanations are very much appreciated. I’m reasonably up on industrial 3 phase induction motors but the battery powered scene is new to me. I realise this isn’t exactly RC but your channel and site has been the best source of info I’ve found: I’m looking to make an electric scooter more dangerous and I wondered if you wouldn’t mind checking some of my assumptions before I order parts. Stock motor is 280w 24vdc and turns at 2750 rpm. That gives you about 15mph…. eventually - it’s pretty gutless. I’d like to get that up to more like 25mph with improved acceleration and I need a fair bit of torque as the scooter with me on it will be at least 100kg. I want to try and run it off two 5Ah Milwaukee drill batteries for 36v as I already have these. I’m unsure of the max current these will sustain and don’t want to unduly stress them so they’ll carry on running my tools! If they just won’t work I’ll probably move to hover board packs or possibly a home built pack. That all suggested a 120KV motor with sensing for better starting torque would work for me and I can get this style for a sensible price in the UK: www.ebay.co.uk/itm/120KV-24-36V-Brushless-Sensored-Motor-45km-h-for-Electric-Balancing-Scooter/203011985854?epid=20038978874&hash=item2f447511be:g:qGoAAOSw8xde2Rqq I’m still not really sure what ESC to pair it all up with though. Motor spec suggests max draw would be ~128A at 36V but I’m unlikely to use that continuously. Would that suggest a 150A ESC? I don’t want to spend loads but I would like something programmable so I can derate the max power so the kids can play on it (or to preserve my batteries). Another nice to have would be the ability to connect directly to a thumb throttle but I’m unsure if this sort of thing is available - I’ve seen a trick with a servo tester to make it work and I’m happy to do that if it’s not but it would be more elegant if I can do it directly. Do you think a capacitor bank would be worth it in this application? Reliability and overcurrent/overheat protection would be a good thing so I don’t get stuck with a burnt out ESC miles from home! I have no idea what manufacturers to look at, which to avoid etc. Any thoughts on the whole system or suggestions for an ESC very much appreciated!

3s support ESC we cannot use 4S battery?

This video gives an excellent overview. Try including the Math too. It'll be perfect then

Can i run 35amp esc surpass hobby lsted so far 1 year on 2s on 4400kv on 3s in my 16 the schale wirh big tires 1 10 tires

Question If i'm using only one ESC with no external BEC and disable the red wire on my speed controller, will the receiver now receive the full voltage from the batteries or will the receiver just not power on?

Very informative video I must say. Highly appreciated! I have a question regarding the type of battery an esc can take. Could you use lithium coin batteries, each being around 3.6v in series to get an esc working and fly an rc plane for example? If so, (I haven't done must research on this) let's just say I have 5 3.6v Lithium coin cell batteries in parallel connected to an esc with a brushless motor, would that setup work? Sorry if I sound a little confusing.

Hello sir, I want you to help me if you want. I have a 600kv motor and I don't know which esc is best for it to achieve the greatest speed

i have some random motors with 2 wires so i guess they are brushed? what do i need to make a small rc car? like what motor, esc, battery? (edit: im thinking about turning a 1/24 model car into rc model car)

If I’m building a battery operated surfboard not to surf but to just drive me out the back , do I still need a ESC or can I just run an OFF ON button straight from my battery ?

25" Tunnel hull 90A Esc Run with 3s Lipo What motor can fit to this racing boat setup??

After watching several times and I'm beginning to grasp it! How do you define a "large" or "small" plane though? The one im building has a 1m wing and weighs around 600g, including receiver, servos, and a couple of AA batteries lol. Where would be a good starting point for choosing a battery pack?

3c, 2212 size, 1100kv motor, and 20A ESC. What battery should i use?

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? What are your recommendation of good ESC amps for my 40A motor

I bought a sss motor 4093/2140kv its specifications is Max amp: 155A Max volt: 26V Max power: 4200W Idle current: 2.6A Max rpm: 60K Poles: 4 poles Turns: 2.5D Diameter: 40mm Length: 92mm Shaft diameter: 5mm and I'm partnering it with the surpass hobby 150amp esc its specs are Name: 150A Brushless ESC Model: 150A Color: Black Continuous Current: 150A Burst Current: 720A Battery: 9-18 cell Ni-MH battery/3-6S Li-po battery BEC Output Voltage: 6.1V or 7.4V/3A Resistance: 0.0003ohm Suitable for: 1:8 RC car Item Size: 59 * 46 * 45mm Item Weight: 148g The battery I'm gonna be using is 6s 35C 2200mah What can you suggest to this build?

I want to bulid a rc boat but the max battery have 2200mah and i already buy brushless 2150 kv , and i dont know how much ampere for the esc 60 or 80 i still dont get it

Hey sir, im from uni student. My team and i are going to make our first RC boat. As a mechanical, i still confuse which motor should i use? How i determine the suitable KV for my rc boat? Fyi, its for race and the maximum esc allowed is 120A and 75cm long for the hull. Of course i still don't know how to choose the correct propeller. Could you help me?

6:20 what you mean with load for example for a jet boat?

This is so complicated. Sorry, I'm pretty stupid about electronics. I have a 1534Kv Motor requiring 2-3s Li-Po, in a scratch foam radio controlled trainer aircraft at 48" wingspan (I know, pretty small wingspan for a trainer but we'll see) I also have purchased a 30A RC Brushless Motor Electric Speed Controller ESC 3A UBEC (40A 10 second burst capable). So based on the motor and the ESC, what battery do i Need. I would like to start with a 3S, what do you recommend regarding exact battery specs? and lastly, what about a propeller? ...I've tried the eCALC programs and even subcribed to it but there's too much info to provide, so complicated im pulling out my hair, I would so very much appreciate any help you can provide. This is going to drive me to drink.

69th comment 😎

I didn’t understand shit 😂😂😂😂, more complicated than a woman

I know less now after watching this