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  1. magudaman

    BMC 1500w Brushless motor 5/8in shaft - $75

    Up for sale is my 1500w BMC brushless motor. I added two Temp proves that show internal air temp and internal winding temp. The shaft is 5/8in bore with a keyway. It has hall sensors internally that work but have since lost the pin out. I will try to dig up the hall connector before the sell...
  2. magudaman

    Sold!!! Kelly KBS-X 72051xs 24-72v extra high speed version -$50 Sold!!!

    Sold!!! Up for sale is my Kelly KBS72051XS with serial adapter. The controller works great and has the high speed option for 70,000 ERPM. I paid a lot of this unit only to use it for a very short time and has been stored since. $50 Specs listed below: KBS72051X Kelly KBS programmable BLDC...
  3. magudaman

    SOLD! Cycle Analyst version 2.3 CA-DP 6 pin connector -$60 SOLD!

    Sold! Up for sale is a perfect condition Cycle Analyst CA-DP version 2.3. This unit looks new, comes with wheel magnet. Works perfect. Located in the east Bay Area, California but could ship at buyers expense. $60 Sold sold sold
  4. magudaman

    Sold!!! Lot of Ebike parts California Bay Area hub motors chargers controllers -$240 Sold!!!

    Update!!!! This is sold. Take it all for $240 Up for sale is a lot of ebike parts from an old ebike businsss. The photos show all the part you are getting but I did rough summary below: - New 10x 250w to 500w front and rear hub motors all seem to be freewheel internally - 1x 26in front wheel...
  5. magudaman

    FS: 16s 20ah A123 Pack with agniusm kit AMP20 $350

    Edit: price dropped to $350!! Up for sale is my 16s 20ah A123 pack with custom case and built in BMS for charging. These cells are the original USA cells and the pack has an estimated ~300 cycles on it (cycle life is ~2000). The pack has a 200a fuse internally at the high current connector...
  6. magudaman

    240v power supply to 120v

    I am in the market for a new lab power supply and see some really good reviews for the Gopher units. The one I really would like to get is there CPS-6017 ($187 Shipped) which is a 60v 17a unit but is only 240v EU. I use my current one as a charger occasionally with an ideal diode circuit as...
  7. magudaman

    Kelly KDS Mini Brushless No current limiting!!!!

    The short is the Kelly KDS Series motor controllers don't have battery side current limiting. The long is below: I spent that last 3 day getting my scooter all wired up to a tee, the way I planned on keeping for life. Try hard to get proper cable management and such. SO I get to programming...
  8. magudaman

    Echo Tools 58V 4ah Batteries

    Just was at home depot today and saw the new Echo line of battery powered tools. This includes a chain saw, lawn mower, hedge trimmer, and leaf blower. But what is really exciting is the tool system runs on a 58v and is running 4.0ah batteries (also have a 2ah one), That is ~230wh per pack...
  9. magudaman

    Samsung 30Q INR18650-30Q 3000mah 15a cell

    I had been looking over my battery choices a couple months ago and recently wrapped up my electrified GoPed project and want get a new battery for it. So I started looking at batteries again. Ok so the battery I’m not seeing much information on here is the Samsung INR18650-30Q. This is a...
  10. magudaman

    Helicopter Outrunner Motor Spacing

    It been a while since I have been back to the sphere but with some spare time recently I am starting back up my projects. The one that I have been working on recently is using a KDE 700xf 295kv helicopter motor with a Goped frame. I was using this thing in a ghetto form with a 100a sensorless...
  11. magudaman

    ME0907 With Sine wave controller?

    Has anyone tried using the ME0907 with a sine wave controller? I am currently using a kelly and it is the noisest motor I have ever used. Open frame and that metal can acts like a drum driving around. My efficiencies are ok but not as good as I would hope. How much improvement in efficiency...
  12. magudaman

    EV Rally 2013 September 28, Cupertino, CA

    The Annual EV Rally is happening on September 28th 2013 in Cupertino, CA Last year it was a little commercialized with the toyota electric rav4 around but it was still a lot of fun!
  13. magudaman

    Grid-Tied Discharger

    Not sure if anyone has talked about this yet or tried it but my searches came back negative. I am tired of resistive type dischargers and was interest in trying a grid tied one. Those cheap, illegal, Chinese grid tied inverters have all over ebay for quite some time now and could make a...
  14. magudaman

    Halling Up a RC heli motor?

    I got a new fancy helicopter motor in today and want to get some halls installed in it. Previously I have installed my hall between the lamination slots but this motor is much too tight between the slots for that to happen. So I am trying to plan out another way to set this motor up. Can I...
  15. magudaman

    VICTPOWER A123 Quality

    So I wanted to pick up some A123 before they dry up or disappear, plus I am hoping to do a larger pack for my bike so I can do some serious range. My Ebay source dried up that had the A123 20ah cells that I tested so now I am looking back toward china. VICTPOWER can do $27 a cell shipped if...
  16. magudaman

    80-100 130kv Rotor off balance?

    I just got my halls installed in my Turnigy 80-100 130kv motor and spun it up with the correct hall configuration. At a specific frequency the motor really seems to sing and vibrate. At low speed I can notice the bell doesn't spin concentrically. After running at full speed for about 2...
  17. magudaman

    Honeywell SS411A working?

    I purchased the honeywell SS411A and am testing my wiring harness but I can only see the hall sensor changing from .000 to .005v. Here are the ones I bought: http://www.digikey.com/product-detail/en/SS411A/480-2000-ND/701355 What gives? I am touching them to my turnigy 80-100 magnets with a...
  18. magudaman

    PWM Frequency verse Iron Loss

    I have a C80-100 130Kv motor coming soon and have been doing some research into what sorts of realistic power the thing can put out for continuous and short bursts. While searcher for that I found this thread over on RCgroups...
  19. magudaman

    A123 20ah Pouch Constant Current Discharge Tests

    I recently purchased a new a123 20ah pouch cell off eBay. The cell arrived and looks completely new with full tabs and the matching barcode on the one tab. This is my first new a123 cell since my early days with the dewalt cells in 2007. So first I put the cell through six 1C full cycles...
  20. magudaman

    Palo Alto, CA EV Rally 9/23/2012 EDIT ***Cupertino, CA

    On 9/23/2012 is the annual EV Rally in Palo Alto, CA. I really enjoy this small rally and is quite a bit of fun. Come out! http://www.eaasv.org/rally.html
  21. magudaman

    Traditional Sense Line Current limiting?

    I have a power supply that I am putting together that I want to limit current on but I don't think Fetcher's board will work. Its totally possible I am just confused and Fetchers board will work great! My two sense lines are setup up take the full voltage of my output lines and the internals...
  22. magudaman

    KDE Brushless Outrunner, 5.5KW continuous 12KW Peak

    Came across this guy in a RC helicopter magazine and thought it was pretty impressive: 700XF-395 HP BRUSHLESS MOTOR Key Specifications: Kv: 395 rpm/V Maximum Power : 12,000+ W Continuous Power: 5,500+ W Maximum Efficiency: 92% Optimized Voltage: 51.8 V (14S) Voltage Range: 44.0 V (12S) -...
  23. magudaman

    37,000w+ for 1 minute, Motor/motors?

    I am looking at a project that would have small lightweight motor or motors that would output around 50 horsepower for around 50 to 60 seconds. I have recently been looking at some of the interesting looking RC helicopter motors and transmissions that do 5,500w continuous and 12KW peak in crazy...
  24. magudaman

    Dual Motors Single Controller

    I know this has been discussed before but I could seem to find it. Most places seem to claim that two brushless motors on a single controller is a bad idea but I don't feel it would be that hard to accomplish. So the idea is to use two RC out runners on a timing belt feeding into a single...
  25. magudaman

    Machining a Brushless motor design

    So I am very tired of looking for a good brushless that is lightweight, that has low KV (<80rpm/v), and can handle around 2000w. So how about making my own. Have the machining skills and equipment available. What if I used a motor that I know works well as reference and made a few adjustment...
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