Quadcopter Drone Flying Characteristics

All in all the JJRC Quadcopter Drone is a very robust, stable flyer. Changing the direction the Quadcopter is pointing towards (the yaw rate) is not spectacular in low rates but is quite acceptable in the top 100% mode. However when flying in this mode be aware any sharp movement on the right stick (mode 2 flying left hand throttle stick) the RC Quadcopter Drone will enter into acrobatic auto-flip mode and perform tight flips.

The LED lights will start a flashing sequence when the battery life is running low. Be warned you don’t get much time left to land the Quadcopter Drone so it is better to fly this model using a timer. Lipo batteries last longer if you don’t run them right down so using a timer has double benefits. Remember to let the motors cool down if you have spare batteries ready to go.

Quadcopter Drone Body Styling

The body shell of the JJRC 1000A resembles that of the much larger DJI Phantom and is a welcome change from all the Hubsan X4 look-a-likes. The propeller blade shapes are of a very similar shape to those used on the Walkera QR Ladybirds albeit slightly larger.

Quadcopter Drone Transmitter

A real plus with this model is you get a ‘Proper’ sized Remote Control RC Quadcopter Drone Transmitter. Nearly all under $30 Micro and Mini Quadcopter Drones have tiny transmitters that are OK for smaller hands but can cause stress for those with larger hands. It is therefore plain to see that this under $30 Drone is a great learning tool and will teach any beginner the basic Quadcopter flying skills. It will also prepare YOU well if and when YOU want to move up to bigger Quadcopter Drones.

JJRC Quadcopter Drone Review from Drone Flyers

We took the JJRC 1000A outside today and had a blast with it. We can’t get over how quiet it is unlike some of the other Quadcopter Drones in this class. The lightweight body shell and larger size propellers don’t seem to strain the motors and in 100% mode the flips are awesome. It was a pleasure to fly, fast and easy to control.

Over the next few weeks the Drone Flyers Team are going to put this RC Quadcopter Drone through some rigorous testing. Having flown the JJRC 1000A indoors over Christmas and studied all the Best Drone Reviews of this model we are certain that this is one of the finest under $30 Quadcopter Drones you can buy.

Quadcopter Drone Description

Item Name: JJRC 1000A Quadcopter Drone
Frequency: 2.4G
Channel: 4
Gyro: 6 axis
Battery: 3.7V 250mAh lipo
Flight time: 5-8 minutes
Quadcopter Drone Battery charging time: about 40 minutes
Control distance: about 80-100 meters
Size: 12 x 12 x 2.5cm
Color: White

Quadcopter Drone Features

Latest 6 axis gyro system
Mini size, super light weight
With LED light function
Compatible with transmitter of V202 V222 V262 V272 JXD 385 388 X30 X30V F180 L6036 L6038

Quadcopter Drone Package includes

1 x JJRC 1000A Quadcopter Drone
1 x LCD Quadcopter Drone transmitter
1 x 3.7V 250mah battery
1 x USB charging cable
4 x spare blades
1 x Quadcopter Drone manual

More quadcopter DIY article here :http://www.rcdronegood.com/

Even among drone enthusiasts, many can be surprised when they learn that drone racing has effectively become a sport. Not very long ago, the “Drone Racing League” was basically being tested by ESPN, shown on television during odd hours and such. However, once ESPN essentially renewed DRL for a second “season,” so to speak, it seemed the sport was established. Just last month, the DRL announced the 2018 world championships, which will be sponsored by Allianz and held in Saudi Arabia. That certainly signifies that they’re ramping things up a notch (and looking to get foreign markets more involved, no doubt).

Naturally, this means that the pilots who compete in the league have gotten more serious (and will continue to get more serious as the league grows). Accordingly, their drones are being built more and more competitively. As one article on the growth of DRL and its expansion into sports betting markets pointed out, the pilots’ drones are not like those that have traditionally been built for stability and steady video shooting. Rather, racing drones are built for speed and maneuverability. That makes them intriguing to fans and more casual drone users who want to hone their skills using these machines recreationally, rather than for casual use, shooting video, etc.

Most professional pilots, however, aren’t merely purchasing drones and flying them out of the box. Rather, they’re piecing together their drones with high-end parts from a variety of companies. The DRL site has a full list of pilots and gear, if you happen to have a favorite pilot (or drone) you’d like to emulate. But just for a sampling, here are a few of the preferred motors from top pilots.

Electrify RC 2206 2450kv

This is the preferred motor of 32Bitsofgil, who’s become one of the better up-and-coming pilots on the circuit (insofar as anyone can be a newcomer in such a new sport). There was a previous version of this motor without a “kv” rating, which refers to its constant velocity. This updated model, when paired with a quadcopter, can make for a very capable drone. This motor can be bought for only about $20.

And then there's the content, can click here to read more: http://www.rcdronegood.com

Whenever you are looking for racing drone frame, there are the main factor you should always consider when choosing drone frame.

Sizes
X or H type
Weight
Materials

Size: This most important factor to consider before deciding to choose the best racing drone frame is the size of the arm. The size of the arm will guide and help to determine which kind of the props can be used without any effect. The prop restriction varies from one min quad to another one. Therefore you should always need to check the quadcopter before agreeing to buy.

There are basic rules of thumb that may help you understand below they include:
The arms under 200m. This arms can only be able to support props that are no longer than 4''.
The arms that are 200mm to 21 in length are capable of supporting props that are no bigger than 5''.
The arms which are 225mm to about 250mm long can make a support of 6'' props.

Too long , Therefore more please read this article: http://www.rcdronegood.com/best-racing-drone-frame/

As we know, there are so many flight controller brands on the market like RJXHOBBY, Crazepony, DYS, Betaflight, Openpilot, Hobbypower, Kiss etc. But which is the proper one for your FPV?

Listed the popular FC as below, after reading them, which one will you choose? I need your suggestions. Thank you.

RMRC Seriously Dodo Flight Controller Rev 3b

• 8 input channels, 8 output channels
• 2-6s input voltage, 5v output
• 3 UARTS
• STM32 256k processor
• 5.4g

The RMRC Seriously Dodo flight controller has an excellent reputation of being one of the very best flight controllers on the market for drones and drone racing. Dont worry about an external BEC like you do with other flight controllers, because the Dodo can take the power right from your flight battery! Easily configure and set up your dodo with Cleanflight. Compatible with PPM, SBUS, and Spektrum receivers.

RJX Raceflight Betaflight REVO F4 STM32 F405 Flight Controller

• STM32 F405 MCU, Betaflight -REVO firmware.
• Betaflight easily delivers 125us (or faster) loop times on the F4 flight controller.
• SBUS/PPM input (Pinheaders)
• DSM/DSM2/DSM X input(Plug),6PWM output (Pinheaders).
• New generation F4 hardware flight controller for FPV race, STM32 F405 MCU.

Frequency up to 168Mhz ,Flight controller firmware is pushing flight controllers to the limit. Fast loop times enable sophisticated filtering to deliver the locked in, flying on rails feeling. Betaflight easily delivers 125us (or faster) loop times on the F4 flight controller.

Crazepony F3 Flight Controller

• Acro Cleanflight 6DOF Cleanflight
• Supported Oneshot ESC
• The F3 has a standard 35x35mm form-factor with 30mm mounting holes and weighs just 6 grams.
• I2C port always powered, perfect for external sensors or always-on OLED Screen.

Specifically designed for racing, it gives pilots all the features, connectivity and expansion capabilities they need. Supports a variety of aircraft, tricopters, quadcopters, hexacopters, octocopters, planes and more.Supports OneShot ESC and more than 8 RC channels. Gives you all the features you need for the heart of your aircraft, whether you're into FPV racing, acrobatic flying or aerial photography it's perfect.

This speed reach 250mph, It is the fastest drone I found it on all over the world. If you find out more faster one, please tell me to update this list.

Video credit: OMEGOOLIEBIRD

Want to know top 5 Fastest fpv Racing drones, click this link http://www.rcdronegood.com/fastest-drone-racing-fpv/

Runcam is as known by its hd fpv camera with high quality. Many pilots have tested Runcam other versions (Eagle) before they released the new amazing split one. Lucky, I have received it and want to share this Runcam Split Camera Review on here, please go ahead if you are interest in it.

What you get?

• 1x RUNCAM SPLIT CAMERA
• 1x WiFi module
• 1x 180mm Lens Extension Cable
• 1x Aluminum bracket
• 1x ABS bracket
• 1x 3pin FPV silicone cable
• 1x TV-out and power cable
• 2x Set of screws
• 1x Manual

About $90 you can get it, very light only 21g. Improved Sd card Mount.

No more push mechanism like Runcam3 or Session5 . to prevent accidental removal . they are now using latch design now no more accidental popup’s. for more protection use electrical tape. by mounting on your FC you can’t remove your Sd-Card anyways we can use Micro-Usb for file transfer.

Too long, More details for setting and feature, please go to the original place http://www.rcdronegood.com/runcam-split-camera-review/

I definitely recommend this excellent and super fun aircraft E-flite Convergence Vtol. Why? go ahead, after reading this E-flite convergence vtol review you will know the reason.

Unboxing

There are one boboy convergence vtol BNF, two pair propellers, two vertical fins and one user manual in the foam box.  The quality of the E-flite convergence vtol feels pretty good as is expected from Horizon Hobby.

Assembly

Install the vertical fins: Install the vertical fins on the fuselage using two screws per side.

Install  propellers:The main propellers are labelled near the hub with an “R” and an “L” to show on which side they should be installed.

Install battery:Install the fully charged battery in the battery compartment. Secure using the hook and loop strap. Connect the battery to the flight controller. Refer to the Center of Gravity section to ensure the model balances at the
recommended CG.

Install FPV system

Items required for FPV system installation, there are camera,video transmiter,antenna and video monitor with headset or goggles.

Flight test

For your first flights with the recommended battery pack, set your transmitter timer or a stopwatch to 6 minutes.

To transition to airplane flight from multirotor flight, change the flight attitude switch on your transmitter to the airplane flight position. The throttle will increase slightly and the motor nacelles will rotate forward in three stages to the airplane flight position.

To transition to multirotor flight from airplane flight, reduce the airspeed, change the flight attitude switch on your transmitter to the multirotor flight position and stability mode for landing.

Lipo battery have become an essential part of drone, but if you do not know maintain them, here you come the right place.

How to charge a lipo battery for the first time?

In my experiences, the IR of lipo battery is still coming down after 5 cycles even as many as 10 cycles, therefore you will have more better flights from a battery with 10 cycles on it than with 5 cycles on it for the first time.

As we know, in battery safety instructions is that 1c charge rate is the standard “safe” rate.

Charging amps is depended your lipo battery brand and capacity, therefore it’s very important in chosing the best battery for quadcopter. such as, Gensace lipo battery can be charged at up to 5C but not every brand can to do, as well.

How do I know when it is charged?

Charge times = Charge coefficient * Battery capacity / Charge current

Mostly,For the vast majority of LiPos, the Charge Rate is 1C, therefore the charge coefficient value is 1.1 and charge with 0.2C then coefficient value is 1.5.

Typically, a 1c charge rate is going to charge a lipo in around an hour, no matter the cell count or capacity.

Generally,the charger you bought will stop charging when the voltage hits 4.2 per cell, it can chase the voltage until it reaches the voltage, it is no need to worry about that.

But it is depended the brand of charger. A quality product make out customer confident and convenient. 

How to choose the best battery for quadcopter?

Before choosing the battery for your quadcopter, you should know about the flight times, C-rate, Capacity, Average Amp Draw, brands and price of the battery.

For example,

Flight time =(Battery Capacity * Battery Discharge /Average Amp Draw)*60

For calculate your quadcopter flight time, you have to know three factors: Battery Capacity , Battery Discharge and Average Amp Draw

It's a complex process that I high recommend this detail article about how to choose the best battery for quadcopter, After reading it, you will know how to do.

How to keep your drone flying continuously?

There is actually a ton of ways to extend the battery life of your drone without having to insert a new battery unless that’s your plan. However, if you want some other options to try, we’ve got them.

1. Knowing when to charge the battery
2. Keep an extra battery
3. Check the weather before you go
4. Remove your camera
5. Remove the prop guards
6. Don’t destroy your battery
7. The proper voltage

Extending your flight time is easy as pie, and there is a ton of ways to do so. Knowing how to extend the flight time to the full extent of your drone is solely based on your drone, so knowing your drone is very important.

How to protect lipo batteries?

The charging current must not exceed the maximum current specification identifies the general should not exceed 2C;

Discharge current may not exceed the maximum current specification logo.

The battery should be done to treat transport filling , crash and other measures to prevent the battery to severe shocks or vibration ;

No over discharging, No over-charging, No fully-charged storage

Reference Source: http://www.rcdronegood.com/category/quadcopter-best-lipo-battery/

Before choosing the best esc for quadcopter or FPV, you should know some ESC knowledges (Type, Firmware and Key parameters) as below.

ESC type

A Brushed Motor has a rotating set of wound wire coils which acts as an electromagnet with two poles.

A Brushless Motor uses a permanent magnet external rotor, three phases of driving coils, one or more devices to sense the position of the rotor, and the associated drive electronics.

The output of the ESC line, brushed have two lines, brushless have three lines, connected to the motor;

Which type is the best?

As we know, most all of quadcopter esc is brushless, because of High efficiency, Higher speed range, no voltage drop across brushes.

The downside of brushless esc is that they are more expensive than most brushed types, however, the extra price is usually more than worthwhile as they will last MUCH longer.

Esc firmware

For base on open source firmware, there are 3 main types of firmwares, which can be divided into blheli, simonk and kiss firmware.

I would personally go for Blheli. Why is it so? Well, considering how fast Blheli has undergone improvements, it has been able to beat simonk on the performance. However, Kiss beats them hand-down on performance!

Between simonk and Blheli, I previously would go for simonk but not anymore. Currently, I think Blheli is really undergoing revolutionary improvements on its features.

Although the difference in size between Blheli and kiss might not be that big, the difference is still a front leap for kiss firmware.

Key parameters of esc

Max Amp Rating

The maximum amperage an ESC can handle needs to be greater than the motor/prop combination will draw. If the amperage rating is not high enough, it could overheat and die.In terms of ESC, suggesting 20%-50% extra Amps is good rule to ensure your ESC do not burn out.

Voltage from battery

Make sure your ESCs the ability to withstand the voltage from the chosen battery.  We assume that as we know our battery atleast 88A current. So here we will take ESC current is less 88A, maybe 60A is ok.

Although above is a personal opinion based on my experience, I believe that it is an opinion that is shared by a majority of quadcopter owners!

Please leave your message if have any questions about any thing.

Flight controllers tend to be aimed at different types of flying style: Cinema Flying, Sport Flying and Autonomous Flying. At the same time, there is a massive number of flight controller brands in the market, so it's hard to know which is best. Today I will give some perspective on that.

Flight controller For Cinema Flying

Pixhawk PX4 :Integrating with ARM 32bit chip and PX4FMU+PX4IO, this is yet another incredible option for any aerial photographer. Boasting UART, CAN, SPI and 12C bus interfaces; you will love its performance.

Features

• Advanced 32 bit ARM Cortex® M4 Processor running NuttX RTOS
• 8 PWM/servo outputs
• Abundant connectivity options for additional peripherals (UART, I2C, CAN)
• Redundant power supply inputs and automatic failover
• Integrated safety switch and optional external safety button for easy motor activation
• Multicolor LED indicator
• Integrated multi-tone piezo audio indicator
• microSD card for long-time high-rate logging

The DJI NAZA-M V2: It is best to use if you want to do an aerial photography.  Its lightweight makes it quite convenient for your drone while the well designed control platform places the entire control process at your fingertips. In fact, it gives you total control of your drone as you capture those incredible aerial images.

Vector Flight Controller: If you are bold enough, you can also try Vector on your drone. Integrating an Eagle Tree system, you will definitely love its excellent performance. Ideal for professional and beginners alike, it also boasts an ETR00150 which gives it that unique performance and reliability. Its weight and size make it really convenient for aerial photography while the easy-to-use design adds to its awesome features.

Flight controller For Sport Flying

The KISS flight controller: It is mostly used in small sized drones. It does not have many features but you can be able to navigate through the user interface without causing a lot of confusion. Kiss is an acestar flight controller for fpv racing such as 250 quad. If you are looking for unrivalled performance, then you have to give it a shot.

RJX SP flight controllerr: lets you record flight data comfortably and conveniently. It integrates the latest Compass, accelerometer, baro and altitude sensor technology which makes its performance even better. Its 2 through holes are quite compatible and can mount onto PDBs as well as OSDs.

The Naze32: It gives you an opportunity to solder on both sides which makes it quite convenient. It comes with an input voltage of 2-6s which is similar to the other flight controllers for 250 quad fpv racing. 

Flight controller For Autonomous flying

QWinOut APM : This is an opensource flight controller which comes with a protective case for ultimate durability. Its advanced construction requires you to have basic understanding of c-programming language which is one of the earliest programming languages, monolithic integrated circuits as well as electrical and mechanical knowledge. 

The 3DR Pixhawk: It is one of the best flight controllers in the market. It is best to use in autonomous flights. It has backup system supports all kinds of sensors and other different flight considerations.

The MultiWii Pro: It is cheap and is readily available worldwide. It is capable of stabilizing remote control style plane, helicopter or a multicopter. It has a barometer, magnetometer, and GPS.

On the basis of contrast of flying style as above, price and specs from the popular quadcopter flight controllers, you will have discovered some important differences that help you to choose items not only today but into the future as well.

If you have any question of any thing about flight controllers and have more experiences, please leave your message on here, Thank you.

 Reference source: http://www.rcdronegood.com/flight-controller-board-comparison/

Here are some tips to help you consider the main parameters for choosing a lipo battery for your drone. 

Main parameters

Capacity

Normally, more capacity is mean more power and more energy. In fact As the battery gets larger, the increase in flight time becomes ineffective, because of the weight of battery. You should have to think about the weight when consider the capcity, Should not be absorbed in choosing bigger capacity battery simply.

 Discharge Rate

Discharge Rate is yet another crucial aspect that need to be checked before you decide to settle for any battery for your drone.You need to get a battery whose C rating is convenient for your drone. you have to compare target c-rating and battery c-racing. In short, my principle is that battery c-racing  is greater than  target c-rating but not too higher.

Voltage

With a higher cell count, performance is maintained above par. However, higher cell counts translate to an increase in weight which, in some cases, affects performance. Choosing the right voltage of battery, you should reference in the datasheet of motor and esc.

Connectors

There are many common connectors include Deans, XT60, EC3 and JST etc. What is the performance impact of these connectors?

• JST connector – up to 5A
• XT60 connectors- up to 60 Amps
• Deans – up to 60 Amps
• EC3 connector – up to 60 Amps
• EC5 connector- up to 120 Amps

Brand 

Tattu , Bonka, Multistar, Turnigy , Zippy , Graphene , SMC, Dronelabs, Ready MadeRC, ThunderPower, Floureon, Venom, Pulse , E-flite etc. Which one is the best one? All of them are good enough, I highly recommend Tattu battery.

Conclusion

Choosing the right drone battery is no doubt important, and looking after your lipo battery is also important.

If you have any question of any thing about the main parameters for choosing your drone battery and have more experiences, please leave your message on here, Thank you.

Why are so many people looking forward to it and can Turnigy graphene lipo battery really can increase flight time for quadcopter? Today, I make a article about Turnigy graphene review for helping you to know what's the graphene battery and its performance.

What is the graphene lipo battery?

Graphene batteries is Newly developed a kind of new energy battery, which the use of lithium ion in graphene quickly a large number of shuttle between the surface and the electrode movement features.

There are at less 3 advantages of the graphene lipo battery as below:

• High capacity energy storage
• Shorten charging times
• Longer cycle
• Less weight
• More cheaper

Turnigy graphene review 1300mah

As above image you see, Typically I see the end temperature around 130F to 140F. Again, the Turnigy graphene pack performed much better than a standard LiPo. After more than 80% discharge at 27A it was barely warm at 108.5F! 

Conclusion

Can turnigy graphene increase flight time for quadcopter? Yes, but not exactly. In fact, according to our survey, graphene material just assisted as additives to increase the performance of lipo battery. So far, they are all more or less good for increasing the performance.

Gradually along with the mass production and large size problem, the industrialization application of graphene is speeding up, based on the existing research results, the commercial application of the first field would be on a mobile device, aerospace, new energy battery and drone field.

Now, there are many brands of graphene battery in the market such as Turnigy, Arris, Grazepony etc. Which one would you like to purchase? Please leave your messages on here, if you have any questions about the graphene battery.

There are massive amount of quadcopter brushless motor brands in the market, What factors should you consider when choosing a given quadcopter motor brand? and Which one is the most popular one? Below are listed most brushless motor brands for you.

Cobra

Cobra brushless motors are designed to offer performance and value for your quadcopter. Built from some high-quality components, they provide top-level performance for years. Featuring an integrated motor shaft, they ensure that prop adapters do not spin off during operation.

FPV model

These are high quality and affordable brushless motors widely used for quadcopters as well as other multirotors. Offering both CW and CCW frame options, they integrate high power N42 magnets and CNC machining.

DYS

With a convenient weight, this is a brushless motor brand that offers some of the greatest motors for your quadcopter and other multirotors in the market. With an awesome shaft and exemplary KV rating, perhaps you need to try it out.

Multistar

This is a high-efficiency brushless motor which offers the best spinning power. Given its weight coupled with its awesome shaft and extra long leads, this is a great quadcopter motor.

LD power.

Designed for FPV drones, this high power and high quality quadcopter motor is engineered with high quality magnets and bearings for an outstanding performance. Brushless in nature, they are not only high quality but also come in a pocket-friendly price. With CNC motor cases, they are quadcopter motors worth trying oiut.

EMAX

Given their price coupled with a 3S LIPO battery and a diameter of 23mm, this is a quadcopter motor whose performance is unparalelled. With an awesome shaft of 2mm and an awesome weight, this is a product you can trust.

Sunnysky

Rapidly gaining a reputation in the quadcopter world, this motor is well designed for your quadcopter as well as multirotor. Brushless in nature, they come with prop spinner and mounts for exemplary performance. With an ability to generate a high thrust of up to 2kg, you can trust them with your large quadcopter.

Xnova

Xnova is a brand that has been refreshing its wide range of quadcopter motors day in day out. Providing high performance and a quality which is second to none, you can try these quadcopter motors for impressive results.

Edge

With an impressive 2300KV and an awesome stator length, this is a quadcopter motor worth trying out. At a pocket-friendly price, this is a motor for anyone looking for a quality product without having to dig deeper into their pockets.

Gemfan

To use these high quality quadcopter motors, all you need to do is use the correct propeller sizes since using wrong propeller size could affect their performance. However, they are an amazing quadcopter motor brand worth your cash.

T-motor

Providing an impressive performance and a longer flight time, T-motors are the most ideal motors for your quadcopter if you want your quadcopter to stay in the air for a long time. Designed to ensure the least temperature increase which translates to less heating up, they are quite reliable.

Tornado T1

Tornado T1 motor is simply fascinating. With an aweome magnet which provides an impressive electromagnetic power, you can trust them with your quadcopter. In fact Tornado T1 motors are well built for awesome performance.

Lumenier RX

Designed to give top of the line performance for all your RC models, these quadcopters are not just unique but exemplary. They are engineered from ground up to offer reliable power and enough spinning ability for your quadcopter. Given their strong stainless steel shaft, they are what you need.

Storm

Storm quadcopter motors are designed to offer the best prop spinning for your quadcopter. And yes, designed to conveniently work with props of different sizes, you can always have them for a quadcopter of any size.

RCX

RCX are brushless quadcopter motors which are designed for smaller multirotors and quadcopters. Small yet powerful, they have a capability of running your quadcopter for a considerable amount of time.

Eachine

Eachine quadcopter motors offer an awesome flight time as well as an amazing performance. In fact, their performance is top-notch and have been able to earn a reputation with most quadcopter manufacturers.

Racerstar

Racerstar are the perfect quadcopter motors for your fast moving quadcopter., With an amazing shaft, their KV rating is exemplary. And yes, the price is pocket-friendly. Try them today for a chance to enjoy amazing performance.

Hobbywing

With a long term reputation, hobbywing are quadcopter motors whose track record speaks volunes. Having provided best results for along time, you can trust them as well.

You need to consider below parameters when choosing your quadcopter brushless motor:

1. Voltage.

2. Thrust.

3. Efficiency.

4. Current draw.

5. Response.

6. Props.

7. Vibration.

8. Temperature.

9. Type of magnet.

10. The shaft.

Therefore, What's the best brushless motor for quadcopter? Brushless motors are typically 85–90% efficient or more, higher efficiencies for a brushless electric motor, of up to 96.5%, whereas DC motors with brushgear are typically 75–80% efficient.

Brushless motors are great for several reasons:

They’re incredibly efficient so they generate very little heat,no wear or contact items (such as brushes) and can spin incredibly fast.

Power density is incredibly important because on anything that’s flying you want to do everything you can to minimize weight.

Nobody complains when components are inexpensive.