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  1. RVD

    imax b6ac charger - really slow?

    thanks for the info. i guess this is just slow because of the 50 watts. not really a big deal i suppose as i can just use it primary to balance cells maybe? is this charger accurate enough for at least that purpose? i also have a hyperion 1420i that i use (that is much faster) but last night...
  2. RVD

    imax b6ac charger - really slow?

    i live in the US (120v outlets) tried using my imax b6ac charger last night. i bought it a few years ago but never got around to using it. i am pretty sure that mine is a real one (authentic) but i suppose it could be a fake. i bought it on hobbyking and they said it was authentic. when i...
  3. RVD

    was away...am back!

    I found a LBS that works with electric bikes. They seem pretty good and they were able to fix some issues that I had with my folding bike conversion. The biggest problem is that the rear hub wheel is a little too big to fit in the dropouts. I was able to spread them to get it to fit but there...
  4. RVD

    DIY battery packs (non lipo)

    I'll run a few lipo tests to see what kind of range I get. On my full sized bike, I used to use up about 15ah for my one way 16 mile commute with my 48v 20ah lifepo4 riding at around 30-35mph so i thought i would need around 10ah each way for my 8 mile ride (using up around 7ah or so of...
  5. RVD

    dead cell in an almost new Turnigy 5Ah 6s

    lol, you're probably right. i don't need any more lipos though...still have a big stack from various sales over the years. good luck with the build. my builds are nowhere near as ambitious as yours...i get scared on my bike if i hit 40 mph. i think with lipos in general and messing with...
  6. RVD

    dead cell in an almost new Turnigy 5Ah 6s

    i have purchased around 20-30 6s 5ah turnigy lipos and around 10 4s 5ah hardpacks turnigy lipos over the years and i have been lucky...never had a bad cell AFAIK. i take good care of my lipos though. i charge up to 4.05 and don't let them go below 3.7. i don't use a BMS but i monitor...
  7. RVD

    DIY battery packs (non lipo)

    I've been using lipo for about 3 years now and haven't had any big problems (no fires, etc.) but it does get me a little nervous having them around the house, etc. it also makes charging at work a little awkward because i don't want these to start puffing up, etc. at my desk where i have a lot...
  8. RVD

    dead cell in an almost new Turnigy 5Ah 6s

    If it's any consolation, I'll take the 6s 5ah packs from you in Seattle if they are free...
  9. RVD

    was away...am back!

    lol, the Zboard seems like it would help if you have a background in skateboarding. I have never skateboarded in my life and thought it might be fun and easier to use this thing but turns out that it's hard and it's hard to learn at my age... (p.s. sorry for the really late reply)
  10. RVD

    was away...am back!

    looks like i have a lot of reading to do. on the ev front since 2012 i have: 1) bought an electric car (nissan leaf) and use it to commute every day 2) bought an electric skateboard - zboard sf special - waste of money because i realize that i'm not athletic enough to ride it
  11. RVD

    was away...am back!

    ok, i was gone for awhile but i'm back. quick history. i got into ebikes back in 2011 and built a few bikes for myself and a few friends. i was building bikes back then with kits from ebikekits and motors from crystalyte using controllers from lyen, batteries (lipo from hobbyking, lifepo4...
  12. RVD

    Boeing Dreamliner Battery Fire

    I haven't been as up to date on this thread but have you guys seen this: http://leehamnews.wordpress.com/2013/02/19/787-battery-diagrams/ looks like the BMS is on the inside?
  13. RVD

    Dahon Speed D7

    sorry, haven't been around much but i did continue with the stock rear derailleur.
  14. RVD

    Bought a new phone

    btw, i also got the samsung galaxy note. it's awesome. much better than my old dell streak.
  15. RVD

    Magura throttle to Lyen controller

    btw, i really like this throttle. it's working well and i actually like the bit of dead space at both ends. i was afraid that the throttle would be too twitchy and it's not (i'm afraid that i'll grab the throttle to get the bike and it will go off running...) anyway, i think this is a...
  16. RVD

    Magura throttle to Lyen controller

    cool, this works using the color scheme above.. magura/controller black/black blue/red brown/green
  17. RVD

    Dahon Speed D7

    cwah, just fyi, the Dahon Speed may or may not be the best option for you. Dahon uses a lot of proprietary parts (derailleur, etc.) and the community is generally unhappy with parts not being available after they go back. Thinking back, I would also look into using a xootr since those use...
  18. RVD

    Magura throttle to Lyen controller

    I searched the forums but didn't really find the info that I'm looking for. I am trying to connect a Magura throttle to a Lyen controller (9 fet sensored). I believe that all of Lyen's controllers use the same wire coloring scheme including black, green, and red. The Magura that I purchased...
  19. RVD

    Dahon Speed D7

    Sam, I haven't seen any other pics of small folder conversions (other than the bionx type ones sold commercially). Do you have pics of yours?
  20. RVD

    Beach Cruiser with 2 hub motors!

    I also noticed that I don't see torque arms. Maybe he should get some...
  21. RVD

    Beach Cruiser with 2 hub motors!

    heh, i'm a pretty old guy myself so i actually understood the Rhoda reference. I am pretty sure that this is the bike that he used: http://www.campingworld.com/shopping/item/adventurer-folding-cruiser-bike/37700 - yes, it's a folding bike too! According to Carlton, he sold his car so that he...
  22. RVD

    Dahon Speed D7

    Nice to hear. It definitely does get boring at 20mph. My other bike goes about 30 mph when I commute to work and I can get it up to 40 mph+ if I really want to (although for me, it's kind of scary going that fast). Even at my fastest this bike tops out at about 25mph. I don't know if it's...
  23. RVD

    Dahon Speed D7

    One of my rules in building this bike was the keep the weight down. I haven't weighed the bike but the rear motor is only about 7 pounds (350 watt geared). I would guess that the entire rear wheel is no more than 9 pounds max with the rim, tire, etc. Since I'm using lipo, each 6s 5ah lipo...
  24. RVD

    Dahon Speed D7

    Ok I moved the controller into the bag. I'll be riding on this bike tomorrow to work so I'll run some tests to see if the controller gets hot, etc. Overall bike. The rear part of the bike Closeup. As you can see, the throttle wire wasn't long enough to extend from the handlebars to...
  25. RVD

    Beach Cruiser with 2 hub motors!

    aw sorry. i guess you have to be logged into facebook to see his album. anyway, here's a pic. lol, i have no idea what he does for a living.
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