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  1. EBJ

    18650 Insulator Rings - Redundant?

    I noticed everyone seems to be using the peel-n-stick insulator rings (usually made from fish-paper). But I also noticed that a lot of 18650's (mine included) already have an insulator ring under the shrink-wrap. Seems kinda silly to be adding insulation on top of 2 layers of stock insulation...
  2. EBJ

    In search of the illusive High-Torque, Low-Speed hub motor

    Hey guys. I'm starting a project that is going to require a high-torque, low-speed motor because I'm running a ~30 inch diameter tire. To throw some numbers out, I'm looking for: ~100+ lb-ft of peak torque. (135 Nm) (90 lbs thrust) ~3000W of peak (motor) power. ~400 RPM (unloaded speed = ~35...
  3. EBJ

    Mini Boat

    It's been a while since I've had an EV project, but I just completed my electric mini boat and thought I'd share it here. Story: I'd always been interested in mini boats ever since I had seen Paul Elkin's. His boat stuck with me for a few years, and then a friend of mine decided to build his...
  4. EBJ

    Lifetime $ costs: Tacoma vs Prius C vs Leaf vs Model S

    I just spent a good deal of time putting together this e-mail and thought I'd post it here for anyone else to look at. This was an e-mail response to: "My Tacoma is cheaper to operate (daily and over it’s lifetime) will go (and has gone) more places than most Teslas. It’s been up and down the...
  5. EBJ

    Ecotality, Maker of BLINK Chargers Files Bankruptcy

    "Ecotality Inc. (ECTY:US), a maker of charging stations for electric cars, filed for bankruptcy with plans to sell itself at a court-supervised auction to pay off debt. A unit of the company, Electric Transportation Engineering, listed assets valued at as much as $50 million and debt of as much...
  6. EBJ

    Prius C - 51.6 MPG

    My wife and I purchased a 2013 Prius C - level II. We just filled-up for the first time since purchasing, and did: 411 miles (Approx 75% city-miles, 25% highway-miles) w/ 7.968 gallons = 51.6 MPG. We would have gone for a Nissan Leaf, but have no means of plugging it in at home. Anyhow, we...
  7. EBJ

    iCharger 4010 DUo 2000W 10S Dual-Port Charger

    http://www.progressiverc.com/icharger-4010duo.html http://www.buddyrc.com/icharger-4010-duo.html Specifications Input voltage range: 9-50V DC Input current limit: 65A Maximum charge power capacity: 1400W per channel @ >23.5V (up to 2000W in synchronous mode) Charge current range: 0.05-40.0A...
  8. EBJ

    Looking for a small, portable, non-balancing Charger.

    Hey guys. I have been using my Hyperion balance-charger w/ DB25 set-up, and it works great. But I was just wondering if there is anything out there that can do the following in a relatively small package: *edit: I'm not looking for another balance charger, just something small that only...
  9. EBJ

    Jack Electric Scooter on Kickstarter.

    http://www.kickstarter.com/projects/191083865/jac-electric-scooter-0?ref=category Thought some of you guys would get a kick out of it. Seems pretty unique. I like the folding mechanism... looks nice and sturdy. Tires seem to be a decent size as well.
  10. EBJ

    Are there any alternatives to Turnigy or Zippy ?

    So obviously Hobby King LiPo seems to be the cheapest, but I was just wondering if anyone is using something other than that ? I noticed the Hyperion LiPo claims a much better quality-control, w/ a failure rate of only 1 in 1000 cells. And that's apparently after 300+ cycles...
  11. EBJ

    Kelly Controller Survey Question

    Hello, I've had many different answers in the last week, so I would like to get a fresh start with this forum. If you have owned a KELLY CONTROLLER and used the REGEN-Brake feature, please answer the following questions: I would really appreciate it. 1. What Model Controller did you have? 2...
  12. EBJ

    Anyone use the Kelly KDZ controller ?

    I originally built a small EV with a Kelly KD controller and everything worked great. I now have a KDZ controller installed on another EV (because kelly is discontinuing the KD model for the KDZ model) and I am having a few issues with it. I was wondering if anyone here is currently using a...
  13. EBJ

    Permanent Cell-Log Questions

    My pack: 10S 20Ah made up of 8 5s 5Ah Turnigys I'm permanently running a cell-log acting as an LVC on each of the two paralleled packs. I still have two questions: Can I charge my bike with the cell-logs still attached (and ON)? I am planning to lift the negative line to each cell-log when...
  14. EBJ

    Half-Way Alarm "fuel-guage" ... question ?

    I'd like to have a "half-way" alarm on my battery. Something that beeps once and then shuts-up. I feel like a half-way (or maybe a little above half-way) alarm would be more useful to me than an LED Fuel-guage. That way I can ride to my destination.... if the alarm sounds before I get there...
  15. EBJ

    General Questions about over-volting a motor

    Given a typical brushed motor (like an XYD scooter motor), What exactly is happening when you run a 24V XYD (brushed) motor on 36V ? and how does that compare to running a 36V XYD (brushed) motor on 36V? Thanks.
  16. EBJ

    Questions when using a Hyperion 1420i

    So I have a few questions, let me just shoot: 1. Do you guys really Charge/Discharge each and every pack individually before assembling them into a larger pack? *I ask because Charging to 85%, then Discharging to 10% seems to take about 1.5 Hrs for each pack (done w/ 2 of 9 packs) It's the...
  17. EBJ

    Ever forget to turn it off ?

    Just got to wondering what would happen if you forgot to turn off your EV... When a motor-controller has an LVC, does it really turn 100% off? Or does it very slowly drain your battery even after hitting the LVC ? I just wonder what happens if a bike was run dead, then put in a garage for a...
  18. EBJ

    Headway 40160S LiFePo4 Questions.

    So, I recently noticed the Headway 40160S LiFePo4 cells at EVassemble: http://www.evassemble.com/index.php?main_page=product_info&cPath=2&products_id=151 And they claim 16Ah and a max discharge of 160A ! I'm after a 16-20Ah 36V pack that can handle about 80-100A Continuous and around...
  19. EBJ

    OK, got a Mean Well... now what?

    Sorry to be such a noob, But my Mean Well PSU showed up today and I was expecting it to come with instructions. I guess not. Darn things don't even come w/ a house plug. So I snapped some photos of it in hopes that you guys could enlighten me on what everything means and how I should go about...
  20. EBJ

    Turnigy 130A Watt Meter Question

    This product from HK: http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10080 It says it measures 0-130A.... Does that mean you can't higher A through it? Example: If I put it on an EV that hits "peaks" of 200A. Would the thing blow-up or simply display 130A ? Anyone using...
  21. EBJ

    Where to get Circular Connectors?

    I'm looking for a few circular-connectors (I dont even know if that's what they are called) and am having a hard time finding anywhere to purchase them. Here are a few pictures of what I am looking for. I'd like to find some that are 7+ pins. Threaded and non-threaded would be nice too. One for...
  22. EBJ

    Fireproofing a battery-pack?

    I was wondering: If you plan on having a battery-pack always attached to your EV, would it be a good idea to "fireproof" it? For example: Permanently housing your batteries in a "charge-pack":http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=4364 I talked earlier about...
  23. EBJ

    Is the Turnigy 10AWG wire an issue?

    So I will have a 36V (10S) 15Ah (or maybe 20) Lipo pack. Made from x6 Turnigy 5S 5Ah (5000mAh) 20C packs. I noticed the wire-guage is only 10AWG w/ the 4mm bullets. Can the 10AWG wire really take the current a 20C battery can dish out ?? With my set-up I expect to be pulling: between 50-100...
  24. EBJ

    Is Regen Braking bad for Lipos?

    I've been wondering if regen-braking while using Lipo batteries would be a good idea. I know you aren't supposed to over-charge a Lipo, so I thought it would work to have regen so long as you only charge the batteries to 90% capacity. *because I imagine it would be bad to have the pack close to...
  25. EBJ

    Battery Box Questions

    So I've seen some people use PVC plastic sheet between their Lipo packs like i saw ypedal did in this post: http://www.ypedal.com/Lipo/Lipo.htm he also used Nylon Filament Tape to hold his Lipo packs together. I've seen quite a few guys place their batteries into saddle-bags on their bike, but...
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