Front wheel drive

[2wayspeaker]

Hello, I'm new to the forum and Eboards.
I'm a student design engineer, so I know how to calculate, design and build stuff.
However I lack experience in both sateboarding and quadcopters.
I want to design a portable Eboard, under 4kg shorter than 60cm.

First I'd like to welcome any remarks on my choice of components:

• Logic 3 Nunchuck

• Arduino mini

• 6S 5000mAh

• 63mm 1700W (@6S) 230KV Outrunner

• 120A ESC

• 265mm 5MHP belt 15mm

• 16T Pulley

• 30T Pulley

• 6S Balance charger and step down integrated as to charge with 120W laptop charger

• 184mm trucks

• 70mm 78A wheels

• Custom Glass Fibre/Aluminium honeycomb Board integrated components (Still designing)

Expected to do 25kph(15mph)

Second some questions:
1. Can I design the board to be front wheel drive on a single wheel? What are the benefits/problems having a front wheel drive vs rear wheel drive?

2. When I charge the board should I shut off the ESC, and vice versa? I know the batteries usually do not stay in the circuit while charging. The Charger usually also doesnt stay in the circuit whilest driving. Is this a problem if I would or should i provide a switch (Drive, OFF, Charge).

3. I can simply use the SBEC output of the ESC to charge my phone (5VDC), right? or does this cause any problems?

Thanks alot for reading this!

 

[Hummina Shadeeba]

front wheel? sure. you'll get better braking.

I forget the formula but I'd have thought youd be hitting higher top speed with that motor and those pulleys.

 

[torqueboards]

1. Can I design the board to be front wheel drive on a single wheel? What are the benefits/problems having a front wheel drive vs rear wheel drive?

A few people enjoy the benefits of front wheel driving. I seem to think that whichever your lead foot is the motor is better off on that side but I could be wrong. You can always swap your trucks and try for yourself.

Front wheel seemed a lot more responsive.

2. When I charge the board should I shut off the ESC, and vice versa? I know the batteries usually do not stay in the circuit while charging. The Charger usually also doesnt stay in the circuit whilest driving. Is this a problem if I would or should i provide a switch (Drive, OFF, Charge).

You could setup all your on/off switches to using an anti-spark xt90 plug which would turn off the connection to your board being on and turn off connection on your charging port. Use my info as only knowledge. I never implemented it as I personally had no need.

I feel it's a lot less hassle and headache though to build it in and I enjoy the benefits of swapping packs anyways.

3. I can simply use the SBEC output of the ESC to charge my phone (5VDC), right? or does this cause any problems?

You most likely could they have lipo adapters from 6S to USB. Haven't seen any for higher voltage though might need to be a custom made option.

 

[2wayspeaker]

I forget the formula but I'd have thought youd be hitting higher top speed with that motor and those pulleys.

Yes you're right, I forgot to change the inputs of my calculation after I optimized the belt drive's power design.
After that I decided to drop my attempt o convert a penny board and would build a custom one, which upped the wheel size from 57mm to 70mm.
So with these specs the board could go 30kph (19mph).
Too fast?