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  1. blueb0ttle2

    Apples and oranges: Converting to Lithium

    I agree that the overall lifespan of the pack should be part of the calculation. I think Lithium has been around long enough to amply prove the claims as to its longevity. The dept. only just bought new lead batteries for the car (this was a year before I was involved :evil: ). So I suspect...
  2. blueb0ttle2

    Apples and oranges: Converting to Lithium

    These suggestions have all been very helpful, but I realize that my core question of how to compare the capacity of Lead Acid batteries and Lithium batteries remains unanswered. (apples and oranges) The capacity of the batteries seems to be measured differently in each case, and I want to make a...
  3. blueb0ttle2

    Apples and oranges: Converting to Lithium

    The original owner installed a NetGain Impulse 9 motor. Which is a rather conservative choice. I personally would have gone for the Warp9, but money may have been an issue when he was choosing parts, so it's quite understandable. That said, the Impulse 9 should handle 1000A bursts without any...
  4. blueb0ttle2

    Apples and oranges: Converting to Lithium

    For the Headway's those 400 batteries is a 10p40s configuration, of course. I've seen similar things done in the past. But again, money and time are sadly at a premium.
  5. blueb0ttle2

    Apples and oranges: Converting to Lithium

    Hmmm. According to my calculations going for ~200AH cells would not save us very much weight (about 150 lbs), and hardly any space. At one point I considered stringing together 400 Headway cells (Since they can discharge at high rates), but frankly that is an absurd and rather costly thing for a...
  6. blueb0ttle2

    Apples and oranges: Converting to Lithium

    Hmmm. I see your point. Lithium doesn't like being drained too much. The controller we have installed (The Curtis 1221C) peaks at 400A. However, we have been having problems getting up hills at normal traffic speeds, and are considering getting a controller that can guzzle more amperage...
  7. blueb0ttle2

    Apples and oranges: Converting to Lithium

    Hello everyone, I haven't posted in this forum for a while. But I have a damn good reason. I've been very busy with my studies getting a BS in electrical engineering, and after 4 years I discovered that someone converted a miata to electric (Don't laugh!) and donated it to the university.I am...
  8. blueb0ttle2

    Musing About Converting a Velosolex to Electric

    Not bad.. not bad at all. :wink: What wattage are those motors/
  9. blueb0ttle2

    Fun with a Heinzmann

    It's been ages since I last posted. All I can say is that the Ping battery in the Europa is still going strong. BTW what's up with this thing? :pancake:
  10. blueb0ttle2

    LiPo-phobia Immersion Therapy

    Sure thing. Yeah, I ought to have made myself clear. Of course one has to be careful, but I have long been afraid of LiPo to an almost irrational level. Hopefully my exposure to it, in the presence of experienced operators (in the lab and field) will help me learn to use it safely, and help me...
  11. blueb0ttle2

    LiPo-phobia Immersion Therapy

    I used to be very afraid of LiPos, but I'm working in a robotics lab over the summer, and am surrounded by LiPos for their flying machines. I have four of them charging 2 feet from my face as I type. I suppose this will make me more confident to use them in the future. :twisted:
  12. blueb0ttle2

    Horses of Iron

    I have this guy's younger brother inside a vacuum tube tester I use for my old radios. #83 rectifier tube. Here's a photo of one in action... And some info on other glowing vacuum tube rectifiers. Often used in Hi-Fi and early radio.
  13. blueb0ttle2

    Brooks Saddles

    B66's and B67's are available in black. The brooks website even has pics. I once rode a 50 mile trip on a B66 on my rigid frame non-electric bike, and was very comfortable indeed. I am going to test out a B17, which has no springs and is narrower, on one of my regular bikes soon, so that might...
  14. blueb0ttle2

    Brooks Saddles

    The B73 has a decent size for most riders and has 3 springs, all vertical. Very very springy, I've ridden a chinese copy, and it can absorb a lot. The B190 is larger, and has an ungodly number of springs. At one point I rode a B135 which has the same saddle shape and size as the B73, but the...
  15. blueb0ttle2

    Brooks Saddles

    The aged saddles are good too. I have one on my main ride now. Aaaaaaaah. :wink:
  16. blueb0ttle2

    Flying Pigeon

    Whatever you do, do not use the original rod brakes for an electric bicycle. Especially if you are using a 48V pack! :shock: Use drum brakes, you won't have to drill holes in the frame, just get the right mounting hardware (If you are lucky, you can score components that let you use drum brakes...
  17. blueb0ttle2

    Blueb0ttle2's Lithium Noob Project Thread

    The battery is out of retirement. After hooking up the BMS again, I left it charging overnight (that being said, all the lights on the bms were on in less than a minute, so those cells really do hold their charge well). Rode my regular commute on it today -I only use about half its capacity...
  18. blueb0ttle2

    No brainer bike purchase

    Man I'm jelly. You folks are right, that should get pretty peppy if you are running through the drivetrain.
  19. blueb0ttle2

    What can you tell me about Tidal Force motors

    Hey folks, I decided not to go for this bike after reviewing my finances. I am posting a link to it in the for sale-used section of the forum. It'd be nice to see one of these cracked open, so if anyone gets it, I want pics on this thread!
  20. blueb0ttle2

    What can you tell me about Tidal Force motors

    Thanks very much. Justin's presentation warned of the drag one gets if one just pedals, without using the motor, and the tidal force is the worst of the motors he tested this way. Otherwise, he says that it is a smooth ride. I am inferring that the tidal force is direct drive. Anyways, the bike...
  21. blueb0ttle2

    What can you tell me about Tidal Force motors

    It should be possible to run this off some other 36V pack...right? I am mainly interested in having a first-world made brushless motor.
  22. blueb0ttle2

    What can you tell me about Tidal Force motors

    I see that they are brushless and have an internal controller. It is more than likely that the model being offered is a 750 watt. I'd have to have a look at the bike, and go over it with a multimeter to see if it is worth the time. I hope it is merely a seller who doesn't know how to change a...
  23. blueb0ttle2

    What can you tell me about Tidal Force motors

    Apparently they are American made (For military use originally), and the company stopped making them. Also, they had an odd system of butting an 8AH 36V battery in one of the wheels. That's all I know so far. The reason I ask is because someone in my county is selling a non-working bike with one...
  24. blueb0ttle2

    Electronic bikes deprive students of exercise, cash

    Keep in mind, this is Arizona we're talking about. It is devilishly hot there, and even someone in decent shape would be hard pressed to ride many miles a day in 90+ degree weather. I am a student in Florida (Where it is not only devilishly hot, but sticky too), and I definitely see ebikes...
  25. blueb0ttle2

    Automatic hub

    Wineboyrider pointed me towards these adapters some time ago, and judging from pictures of the Automatix, (and what I remember from the site, which doesn't seem to be up anymore), this adapter ought to work on the Automatix. I think I'll PM ggoodrums about this adaptor with my questions, if it's...
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