I feel like I’ve said this a lot lately, but I don’t typically post build threads anymore unless its something unique. The last 2 builds have been pretty unique.
This build has been dubbed “Hazard” because of the grip & speed, plus it lulls you into a sense of comfort and then you realize your going 35 mph…and that can be hazardous 
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This is not the first time I’ve built on 80 +/- mm platform, but its the first time that I’ve felt it was successful. These wheels…mutha f#$%er, I don’t know where to start. They roll over debris like 100mm wheels, they are very cushy, soak up a lot of vibration, at 77mm wide they grip like glue. Excellent wheels.
I really hope hummie gets an 83/77mm Centrax wheel with a usable core, its a game changer. I even have a set on one of my push boards.
On to the build pr0n!
Here’s the build sheet, If anyone wants links or whatever, just let me know.
This is a screen shot of the spreadsheet I use to define performance values. It’s not perfect, but I have tweaked it to my personal results and preferences. I’m not sure about the range estimate though. I rode 9 miles last night, had 75% battery left. I’m using a gear ratio of 1:1 so that may need to be adjusted.
Im running 60a motor & 40a battery and this thing hits 35 mph with my fat ass on it, so I am hesitant to up the motor amps to 100a. I am running sensorless FOC & set the switching frequency to 30,000 KHz per @hummie’s advice and it is quiet, so very quiet. This is the stealthiest board I’ve ever built.
The last thing I want to talk about, the power switch. I didn’t get a very pic of it. But if you look at the last of the build pics you can see it in the side of the board towards the rear. I stole that idea from @bigben. I’ll post a better pic of the switch later.
Its a 10mm switch, I used a 10mm bit from the outside, just barely angled up until I had a slot all the way through into the enclosure. I filled the slot with epoxy and taped it off until it cured. I know that switch isn’t coming out with anything but a drill 
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