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  1. 12p3phPMDC

    SOT-227b Based 6 FET XIECHANG

    Here's some pics of the 6 fet I've been working on. It's getting closer. I used 3/8" wide by 1/8" thick copper bar as the bus bar connections. I had to connect the gate drive from the 6 fet controller via wire. It ain't pretty, but it's all I could do for now. Eventually, I'd like to create a...
  2. 12p3phPMDC

    116 Controller 6 FET Input Regulator Mod

    http://focus.ti.com/lit/ds/symlink/tl783.pdf I'm going to order a handful of these regulators in a TO220 pack to try and reduce the amount current that R1 draws on the 6 fet board. IT will do so by eliminating R1 because there is no need to drop any voltage through a resistor. To short R1 see...
  3. 12p3phPMDC

    Heavy Duty Crimper

    I just picked up this beast for $69 US from Harbor Freight. It works great!! I couldn't be happier with the crimp, sure beats soldering large connectors. :D The only weird thing is that I had to use the 2 AWG dies to crimp the 6 AWG wire and lugs... :lol: But it was super easy... I have...
  4. 12p3phPMDC

    20 kW+, $460

    http://www.hydrogenappliances.com/pmacurves.html See the quad core model. 80V at 300A Built in fan. Inrunner design. Heavy duty 5/8 shaft. 16000 rpm.... :twisted: Damn..... Are alternator conversions the way to super high output for low cost? Seems like it has a great power/cost. You...
  5. 12p3phPMDC

    eCVT

    Inspired by the Miles' epicyclic retrodirect with the opposing spragues and these picture examples, I want to explore the idea of eCVT using two motors and two independent controllers. The system would use the planet carrier as the output, the ring and sun gears as inputs. It would then have...
  6. 12p3phPMDC

    Drive Mounts and Irregular Tubing Shapes

    Here's an idea for matching the profiles on complex tubing shapes i.e. anything other than a circle. It's called a contour gage. It's easy to use, you just push it against the profile you are trying to copy and the individual pins slide in the frame and voila...instant copy of the shape. You...
  7. 12p3phPMDC

    Planetary Reductions: Reasonable Prices

    I picked up a planetary reduction for $30 from these guys: http://matexgears.thomasnet.com/ output shaft $8 dollars input coupling $22 dollars. Rated to 5000 rpm 3.1 : 1 reduction (lot's of other reductions available) 110 in-lb rating. Also available in 300 in-lb ratings for approximately...
  8. 12p3phPMDC

    6 phase drive of a 3 phase motor using two controllers

    I'm starting this thread to help explore the idea of running a 3 phase 12 pole RC outrunner motor as split phase or dual stator. Luke brought up the idea in the "attaching hall sensors to RC motors" thread. In the paper by Lyra and Lipo, they describe a type of 6 phase machine like this in the...
  9. 12p3phPMDC

    Catrike Three Speed

    Plans: 2006 Catrike Speed Hybrid -Recumpence Inspired Drive Module (Parallel: Human on Right, Motor on Left) -HXT 80-100 -Turnigy 100A ver4 -Thumb Pot Return Spring Throttle or DigiPot Throttle with "Return Spring" Circuit -12S 30C LiPo 10ah -18:90 reduction GT2 15mm wide PolyChain (Primary 5:1...
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