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  1. C

    Re: Why do you hate China?

    xoxo
  2. C

    BLDC controller /w seperate PWM & commutator

    I've started designing a controller with separate FETs for the PWM throttling and 3 phase commutation. This will replace the controller on the Currie/Kollmorgen motors. My reasoning for the separate commutator bridge is that each arm will switch no higher than about 1000hz, given a 20 pole motor...
  3. C

    External controller for Currie-Kollmorgen

    Anyone tried these controllers: http://www.ebay.com/itm/360621501639?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649 http://www.ebay.com/itm/130875402639?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649...
  4. C

    LiPo for the Currie USPD

    I'm in the final testing stages of my LiPo system for the 24V Currie. I'm using Hobby King 3s and 4s 5AH Turnigy packs configured 7s3p 15AH. Fits in the Currie box. BMS schematic and PCB attached. Photos to come. Uses an Arduino Nano microcontroller. Here are initial limits I've set: High...
  5. C

    Batteries for the Currie USPD

    For the past 8 years I have been running my USPD system with a NiMH battery system. I call the design the "6-pack" using 6 sub-c packs used in the Roomba robotic vacuum cleaner. Here's a pack available on ebay: http://tinyurl.com/bqafqgh I use a multi-pin circular connector to connect them to...
  6. C

    My e-bike stolen!

    Last Saturday night in northwest Wash. DC This is how it looked, except a grey Currie box instead of the wooden battery box: http://mysite.verizon.net/tbrown59/jpg/whole_bike.jpg If you see it contact: Officer Lukancuic(sp?) badge 4682 202-576-8222 case# 184757 or 184737 (bad handwriting)...
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