The Pocket Rocket (High Speed Dragster, With Built in Overclocking)

This is my first ever hobby project (and instructable), which can easily tell from my unfathomable expertise and professionalism. If it doesn't do burnouts, this little car can do 30 mph or more and is barely larger than a small journal.

Materials:

1. NSR King EVO3 motor (21,400RPM, 350gf·cm torque)
2. 2 - 2S LIPO batteries (The batteries must have XT30 connectors and have a C rating of at least 20)
3. XT30 5-pair plugs
4. 5 Amp 35V PWM Board
5. 2S Lipo charger
6. 4 (at least 3) 1.2 inch foam tires
7. Soldering Iron and other related things
8. Hot Glue Gun (with glue sticks of course)
9. 3d printer
10. Super Glue

Skills required:

1. Using a soldering iron (Medium)
2. Using a 3d printer (Medium)
3. Using a hot glue gun (Easy)

Take two female XT30 connectors (they should connect to the battery connectors) and solder the positive end of one connector to the negative of another. Put tape or hot glue over the soldered part to prevent shorting.

Solder the XT30 connectors to the PWM board positive to positive and negative to negative (please don't flip the polarity, I know from experience what happens when you do)

Take a XT30 connector and cut the actual connector part off (The yellow plastic piece)

Take the wires you got from the previous step and solder the red wire to the positive end of PWM and one of the motor’s terminal’s, then take the black wire and connect it to the negative terminal of the PWM and the other motor terminal

3d print the TinkerCad file below.

While the chassis and body are being printed, wire the XT30 plugs together to see if the circuit works. Dial the PWM to about 25% and check if the motor is spinning, if it is, you are good to go, otherwise DISCONNECT the batteries immediately, check your soldering to make sure that none of the contact points are touching each other.

There may be some pieces you have to snap off the 3D print, when I did it, the holes in my car were filled in, so I did have to take a pencil and pop it off, it was quite satisfying though.

Now take your motor and use a ruler or the bubble level shown above to align the motor so the wheel pokes into the hole. (the more accurate, the more straight it drives.) Then once you are done aligning, add COPIOUS amounts of hot glue at the bottom of the motor and hold it in place, obviously blowing at it speeds up the process, but I feel really dumb while I am doing that.

Now, take your two batteries and dab just a bit of hot glue on them and stick the into the inside of the chassis on the opposite side of the motor so the car is balanced., the body is very slim, so it might take a few tries, and yes, it does look like a complete mess.

Now take your car (yes, again) and then put a dab of hot glue at the bottom of the PWM and put it on the back of the car, with the dial facing the outside so you can turn it (I mean, its not there for decoration...I think)

Now the challenging part, wiring everything together, remember, the batteries have the same plug type, so look at the three connectors of the PWM, check that you have two female XT30 cables and connect the batteries to it, now take your 3rd PWM wire and connect to the motor's wires.

Now take two of the wheels, stick them both side of the back axle and use a dab of hot glue at the end of the axles so the tires don't slip off, now take your third wheel put some Super Glue in the wheel's hole, stick it to your motor shaft, align the best you can, and call it a day while you wait for the Super Glue to take full effect.

Drive this at home, preferably into something like a mattress or a pillow if you can't catch it, or you can take it outside, launch it and trust that your best friend will catch it. You didn't spend a day just to build a car that runs away after a few tries.