For your size and and if your building a single drive, you should get the 6374 motor instead of the 6355 which is great for dual drives but the 6374 is about 1 1/2 times as power full as the 6355.
Also, if you go 90mm wheels with 40T wheel pulleys, you’ll have a smoother ride and more ground clearance for your batteries and electronics under the board.
The motor KV should be determined in accordance with the voltage you plan to use.
190KV is good for 10s.
And you probably should go 10s for extra power.
You can do 2 5s lipos in series to make 10s and the vesc determines how much current is drawn from the battery so the vesc can handle any battery up to 12s.
If you use 2 5s Lipos in series, you’ll need at least 5000mah packs to achieve an apx 10-14 mile range which will also depend on your weight, riding conditions and gearing.
And make sure your packs have at least a 25C discharge rating but the higher the C rating the better.
For example, I use 5000mah Lipos with a 60C discharge rating.
You want the battery to be able to handle more amps than the vesc will draw. Leaving plenty of headroom will reduce voltage sag which in turn will improve performance and range.
The vesc does have a built in Bec that supplies 5v for the receiver.
That depends. If you want to be able to charge your board without taking the batteries out using a simple brick charger, then you will need an onboard bms.
If you don’t mind taking the batteries out to charge them then you can use a hobby balance charger.
I use to have a system with 2 lipos that I removed to charge. I used a dual bank hobby charger and I had a quick access enclosure.
The benefit of this setup was that I had 4 battery sets and could carry extra batteries in my backpack and swap them out while on the road increasing my range 4 times.
Well, higher discharge rating means that you will have less voltage sag. So your voltage will be higher when accelerating or going up hills. When the voltage is higher, less amps are required to produce sufficient power because Power in watts is equal to voltage x current.
And the less current you draw form the battery the longer it lasts or the slower it drains.
This is why it’s best to build your battery to be more than what is needed. And the more the better.
This is also why I use Lipos and not Li-ions. With Lipos, you can get more power out of a smaller package
Sorry for the late reply, just got home from work.
Assuming you mean three 3s in series for 9s.
I think it would be possible to get 34-40kmh with 9s and say a
200-230kv 6355 motor
5000mah would be good for about 10 mile range but I would highly recommend getting a higher C rating
Actually I use and recommend at least 60C for minimum voltage sag which means better performance and better range.
Also as I stated in my update to the previous post, C ratings are not accurate for measuring real discharge capability.
They are only good as a relative rating.