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Sunday, January 29, 2012

2 months...ouch

Needless to say (but I will say it anyways), I've been busy. Leading MIT's DBF team has taken up every bit of my spare time since november. Well, almost...

I got the hubcaps and spacers for LiteBoard's hub motors machined:

I did the spacers on the lathe, but the hubcaps I did entirely in the mill. I really like the mill method, rather than going from the lathe to the mill. It took a lot less time. I didn't check one of my drill bits though, and being a student shop, it was damaged, so the tip broke off in my part. I was lucky that it had gone most of the way through before breaking off, though, so I was able to get the tip out. I also decided to try loctite bearing compound this time, so I made the bearing holes slightly oversized.

Even though I haven't been building much, I've been gathering supplies: 2 hobbyking 80A car esc's, 2 more 6S 5000mAh packs (in addition to the 2 I have left over from ELB), all of the metal stock I'll need, 4 1.25"x4" colsons, a massive lipo charger and power supply, a $15 hobbyking 2.4GHz 2 channel radio, etc.

The next machining I'll do is probably coring out the colsons.

Left to do:

  • core out colsons
  • machine axle adapters and hubs
  • wind stators
  • order rotor plates
  • find/buy hall effect sensors
  • assemble motors
  • test motors/esc's
  • assemble massive lipo pack (6S4P)
  • laser cut grip tape design
  • assemble board
  • add lights
  • +more
Wow that's a long list :/ . I hope I have time this semester to work on it. I'll only be taking 3.5 classes to give me time for DBF and this, so we'll see how it goes.


  1. Awesome work you've been doing!
    How's it going?

    I've also started one of my own (, but I find yours much more spectacular! The idea of making the motors inside the wheels is great! I might use it on my next board :P

    By the way, why are you using other wheels instead of the ABEC11's?

    1. I just saw your board. Very nice simple solution.

      I'm (going to eventually when I move somewhere where I have decent workshop space) use the colson's because I can't bore the inside of the ABEC11's out enough to fit a hubmotor.