14/15s controller options for 3 wheel project?

[smokee]

I have not been around the forums much because the 3 wheel project has been mostly on the shelf for a while. No time...
I have a motor now, the maple deck is laminated and rough shaped and I have started fabricating wheel and motor mounts. I would like to get this thing going by summer. So I need to figure out how I am going to power this.


View attachment 1
Motor specs-
80mm 70kv sensored
85amp, 70v, 5kw

Gearing will be 4.25:1 from 16t to 68t (should be good for 50-55kph with plenty of torque) I also have a 12t motor and 47t wheel sprocket for more tuning options.

I would like to run 14 or 15s. 14s would allow for easier BEC and Anti-spark switch (Torqueboards/APS). The options seem to be more limited above 12s for sensored ESCs that would fit easily under a board. Bruno from APS recommended one of his ev controllers, but they appear to be fairly large. Something under 50mm thickness is the target.
The controllers I have looked at are the APS sensored 200 and 300 amp ESCs.
http://alienpowersystem.com/shop/esc/alien-200a-3-16s-evolution-3-esc-hv-sensored/
http://alienpowersystem.com/shop/esc/alien-300a-4-24s-evolution-3-esc-hv-sensored/

There is also this Flier 22S 350A on aliexpress
http://www.aliexpress.com/item/Flie...93895.html?spm=2114.10010108.100010.39.Fnx8oO

Any thoughts, input or advice are welcome.
Cheers

 

[Hummina Shadeeba]

http://www.hobbyking.com/hobbyking/store/__985__182__Speed_Controllers_ESC_-Above_150_Amp.html

 

[smokee]

a link to hobbyking... thanks... :? As you can see by my post I am looking for input regarding more specific, hi-powered controllers along the lines of the ones offered by APS. Could one of those boat/car/quad controllers from hk even hold up to the sustained draw and abuse from eboard and rider? I am not an electrical engineer, I am better with fabrication than wiring circuits... If you have have a specific model/power/brand that you could recommend, that would be helpful and appreciated.

 

[Hummina Shadeeba]

a lot of the controllers in the link I posted are way overpowered for a board. Look at them at the bottom

Alien power system, at least used to and might still be selling the brand "flier", which suck in my book.

 

[smokee]

any hv 14 or 15s ones seem to be airplane/heli... none sensored that high either.
I am looking into the vesc through Ollin Board co. 12s@50amps with a heat-sink. Not the voltage I was looking for, but likely worth the compromise.

 

[Hummina Shadeeba]

O yea u want a braking esc.

I can't see how it has three wheels.

 

[smokee]

here is a different angle

 

[Hummina Shadeeba]

Awesome. I like it. Makes me wonder why I use four wheels.

 

[smokee]

Thanks.