Looking to make my very first electric skateboard

[nv136]

Hello all, I've been reading around the forums for a while now and have decided to make my own electric skateboard (rather than purchasing one). This board will be used primarily on the campus (which is flat), and I only weigh 170 pounds. I have gathered a list of what I want to purchase, could someone please verify that these parts would work together?

The board would be a set up of 2 motors in the back, and the deck would be a loaded vanguard.

Motor x2: http://www.hobbyking.com/hobbyking/store/__18170__Turnigy_Aerodrive_SK3_4250_350kv_Brushless_Outrunner_Motor.html
would this be enough power to move me around? 2000 watts seems like enough... is the amp/voltage rating too low?
ESC x2: http://www.hobbyking.com/hobbyking/store/__84376__TrackStar_Waterproof_Brushless_1_10th_80A.html
These are slightly above the Motor amp ratings, I hope that is enough? Can I control this with Bluetooth?
Battery x2: http://www.hobbyking.com/hobbyking/store/__56839__Multistar_High_Capacity_3S_5200mAh_Multi_Rotor_Lipo_Pack.html
These would be hooked up with a Y clip to the two esc's.
Controller: A Bluetooth chip that connects to an app on my android. Is this even possible?

Am I missing any parts? Thank you all in advance.

 

[sl33py]

Welcome to ES NV!

I would suggest a couple adjustments.

Motors - your kv is a little above the recommended range of 200-260kv. I would also suggest a 50mm or 63mm diameter motor instead of the 42mm motor you linked. The SK3 63mm motors are great but can be difficult to mount dual rear due to length of the motor. Dual diagonal works fine in that case.

ESC - i would suggest you get one of the "tried and true" ESC's like FVT/XERUN or Torque's ESC's (DIYelectricskateboards.com). Or best yet, one of the VESC's (Enertion has one in process shipping Nov i believe).
Batteries - 10c batteries won't give you a lot of headroom if you are running dual *motors*. I'd recommend at least a 20c set of 5000mAh batteries.

Can you run bluetooth controller w/ your phone - absolutely. Would I? Definitely not. No physical feedback and if/when you fall... I wouldn't risk my phone.

I *would* recommend one of the wiiceivers that vedder and others upgrade w/ new internals, or the tried and true GT2B. LInk in my sig if you want to make the GT2B smaller w/ new 3d printed enclosure.

What are you doing about charging? Usually overlooked.

And what's your use case? How heavy are you, what kind of riding do you want to do - flats or hills?

Welcome! HTH and GL!

 

[WeeChumlee]

Hi nv136

If you are mostly going around campus then I would seriously suggest you build a single motor board as this will be significantly cheaper and lighter than a dual.
The extra money you now have you should invest in a 50mm or 63mm motor and a better ESC.
Single motor is more than enough. I have a single 50mm 270KV motor, running on 8S battery and it flies along, get me up all the hills and has brilliant range. (And I am heavier than you).
Running a dual configuration on those batteries will fry them in no time, they are very weak even for a single motor - definitely upgrade these to a higher discharge C value. (20 would be an absolute minimum I would use)

Good luck with your build.

 

[nv136]

Thank you for your replies! I completely overlooked charging. I saw several posts about how people need to purchase a "balance" or a device of some sort to charge their boards. Could I possible make an integrated charger that charges my batteries from an ordinary outlet? I know I would need to purchase a BMS for that... But I think it may be well over my head.

On the other hand, I will for sure for sure go with 1 50mm motor. This does seem like it will reduce a great amount of complications. I will post back with the new parts that I select!

 

[whitepony]

On the other hand, I will for sure for sure go with 1 50mm motor.

I would really recommend 1x 63mm motor. dual motor (50 or 63) is unnecessary complicated, expensive and heavy. single 50mm might be too weak, single 63mm is perfect. if I electrified another board, it would have just 1x 63mm motor!

about charging: there are very simple charger for 20-30$ that can charge a battery perfectly, but they might require a BMS on your battery. Im running a simple charger without a bms, but i regularly monitor my cells.