my Name is Robin, i am a Student and living in Germany. I found this Forum a while ago when i started to plan my first eletric longboard and read a lot of articles but only now created my account.
My goal with this build was to get into the E-Board sense for as little money as possible which is probably the goal of most of the newbies here
But enough words here comes my build:
Here you can the my old Smartphone which i use as an speedometer. The ring of ductape is there to hold an usb power bank which i use as my main Battery for my Drivesystem… Just kidding the battery in my old Smartphone is quite bad and with GPS and Max Brightness the Smartphone was empty while my Board still had half of the charge. To get rid of this limitation I used a 10Ah USB Powerbank which is temporary mounted with Ductape. Direclty below the Smartphone you can see a cheap Voltmeter with i use to monitor the Battery Voltage.
This is the Setup under my Board you can the two trusty lunchboxes which were painted black. The bigger own has two Multistar 6S 5200mAh Battery wired in parallel inside. The smaller one houses the X-Car Beast Series ESC (i will replace it with an VESC when i can ) The boxes are connected with piece made from solid wire XT60 connectors at the front and end. I also added a 4mm banana Connector in the middle togehter with an 100 Ohm resistor to serve as and anti-spark-switch. You can also see the huge 150mm Wheels which help when you are dirving over small gravel and bumps roads(Which are common where i live…)
Since the orignal Trucks were to slim for the 150mm Wheels i decided to go for i milled a gruve in the aluminum and added 10mm thick 320mm long steel shafts with i turned on a lathe. Therefore the Trucks are custom made.
Furthermore I made my own motormount since it was the cheapest option. I used some aluminium blocks and sheets which i milled and screwed together to a very solid mount.
As a Controller i am using the Quanum 2.4Ghz 3ch Pistol Grip Tx & Rx System. But replaced the batterie holder with 2 18650 cells in order to not buy new AAA batteries all the time. If somebody wants to know how i achieved this i am willing to make a Tutorial just message me.
This board can easiely hits the top speed of 35km/h (top speed due to gear ratio, battery voltage and wheel diameter) and can climb 10% hills at 30+ km/h. I got a range of 14km and 220 height meter(?) with and average top speed of 18km/h.
Here is my Partlist
The total cost were roughly 410€ when you consider the machinescrews, the aluminium parts and the lunchboxes.
If you have any Questions regarding my Build feel free to ask me. I will also post more detailed pictures if desired.
I am plannig to add a microcontroller for a smooth accerlation, different mods so it is easy for newbiews to step on the board and not get thrown of it by the huge torque of the SK-6374 192KV but still be able to have access to the full power if i desire. Furthermore i will try to add breaklights via a few N-Channel MOSFETs.