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Hybrid Electric Bicycles

Discussion in 'Prius, Hybrid, EV and Alt-Fuel News' started by zenMachine, Jul 18, 2008.

  1. zenMachine

    zenMachine Just another Onionhead

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    Unlike a hybrid car, the XU450 allows the rider to choose how much electric power reaches the wheels. A small digital controller on the handlebar lets riders choose from four levels of assistance, and a throttle provides a burst of power as long as the bike is already moving.

    The BionX electric motor, located in the rear-wheel hub, has a sensor that measures torque on the bike chain. It uses that information to provide electric power that is proportional to how hard a rider pedals, according to Michael DeVisser, president and founder of OHM Cycles (OHM | Ride like this â„¢). It even compensates if one of the rider's legs is pedaling more strongly than the other.

    OHM Cycle's Man-Machine Hybrid - WSJ.com
     
  2. tochatihu

    tochatihu Senior Member

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    Does this ebike (or any other) allow regenerative braking? Putting some of that kinetic energy back into the battery would be very desireable if it can be accomplished without too much electronics.
     
  3. Rybold

    Rybold globally warmed member

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    Awesome! I've been wanting such a bike for a long time. It's finally here! Excellent!
     
  4. Rybold

    Rybold globally warmed member

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    The article states "The electronic controller on the OHM can also use human pedal power (or momentum from a hill) to charge the battery. This was particularly useful on a steep downhill because the regeneration can slow the bike without applying the disc brakes. ... That will improve in future versions, he says."
     
  5. Jack66

    Jack66 Kinda Jovial Member

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    The review compares the regenerative breaking to the Prius and states if you used it long enough it could fully charge the battery. It was implied that it would be a stretch to do so, but that it was possible.
     
  6. McDonald

    McDonald New Member

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    I don't know, I think people should get that exercise that Americans hate, even if it takes a little bit of training to manage the hills, and leave the batteries in their TV remotes. Electric bike? Meh.
     
  7. MikeSF

    MikeSF Member

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    Problem that if you're using a bike for work or something else most likely you're not ever going to "train" to get up those hills because you have to get to work, not show up as a sweaty exhausted mess. If anything this will help you train more so, because you can start slow with how much effort you put into a hill, where as you can't adjust the height/steepness of the hill.

    However at over $2k for a bike? I'll drive to work :)
     
  8. qbee42

    qbee42 My other car is a boat

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    Why use a bike? Running is better exercise. Maybe you can carry heavy rocks while you are doing it. ;)

    We each have our own abilities. Some are strong, some are frail, some old, some young. If an electric boost allows a rider to get out and enjoy the countryside, then I'm all for it.

    Tom
     
  9. Jack66

    Jack66 Kinda Jovial Member

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    I'm in the military and get a regular workout. Two exercise sessions is OK but you can actually over do it and start to tear your body down if you aren't careful.

    The electric assist would definitely be appreciated to make the 22 miles I would have to ride one way go a little faster. :)
     
  10. zenMachine

    zenMachine Just another Onionhead

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    If you can go twice as far on the same amount of energy then what is wrong with that?
     
  11. A Prime Factor

    A Prime Factor Formerly "I want my PHEV"

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    I'd rather get my exercise doing something fun, not riding a bike.
     
  12. jdenenberg

    jdenenberg EE Professor

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    My son built and tested a "Hybid" bike (with regen braking) in his senior year of HS. Read his report on it at:

    http://doctord.webhop.net/Scott/Hybrid/Weller_report.htm

    JeffD
     
  13. hyo silver

    hyo silver Awaaaaay

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    Bite your tongue! Cycling IS fun! Maybe not as stimulating for some as other forms of exercise, but cross-training has its benefits. :p
     
  14. hyo silver

    hyo silver Awaaaaay

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    A two thousand dollar bike is too expensive, but a thirty thousand dollar car isn't? Hmm..
     
  15. vuapplepudding

    vuapplepudding New Member

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    MikeSF,

    Great comments.

    I used to never like biking to school or work because I get too sweaty. Now with my electric bike, I can still get a mild workout and leave my car at home. The other option is to take my car and get no exercise.

    Some exercise is better than none. I use no gas to get to work now. School is 60 miles away, so no luck yet. WHERE IS MY PLUG IN 2010 PRIUS?

    FYI, I made my electric bike using a New $199 conversion kit 24 volts from Wilderness Energy. I later converted it to 36 volts. Used a 26" standard mountain bike. Front forks must be a certain dimension for the kit to work. I had to pull mine apart a little for the hub to fit.
    Wildernessenergy - Electric Bicycles and Electric Bike Conversion Kits
    Now I only see the 36 volt model and no pricing info without calling. Not sure if this is cool. (I mean, are the prices changing that fast?) Try EBAY too.

    The sealed lead acid batteries are heavy and if it is on the rear bike rack it makes the bike a little top heavy.
    LiON is the way to go, but they are expensive.

    $199 and I was very happy. My brother like mine so much he converted his too.
     
  16. A Prime Factor

    A Prime Factor Formerly "I want my PHEV"

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    No, thanks. I already ate.

    It's not as much fun as walking, Tai Chi, yoga, downhill skiing, heck, unicycling is more fun than biking. I wouldn't have time or energy to do any of those things if I had to slog around on a bike to go everywhere.

    I did try out an ebike a few months ago. It might be okay if I had to have a bike. That one was under $1000.
     
  17. sproven

    sproven New Member

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    An electric bike's got to be greener than a car so each to their own. Personally I can ride far further than the batteries on an electric bike could ever carry me.

    (e.g. last weekend I rode 370 miles over the weekend, tonight I went to a friends for a party, did a 33 mile round trip, hardly feels like I went out).

    I don't suggest your average joe should be able to ride 370 miles but a short trip to get some groceries, buy a newspaper, should be for the bike. Even cars like the Prius get poor fuel economy on those kinds of trips.
     
  18. efusco

    efusco Moderator Emeritus
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    Guess what?!
    At hybridfest there was a dealer selling some hybrid electric bikes name e-scooter or e-bike...similar but slightly different models from one another.... and we bought one!!

    They were on sale for a hybridfest only price of $500 off the usual...making the e-scooter that we got $900 and the e-bike (slightly slower top speed, not as strong of welds so only capable of carrying 200lbs instead of 225 like our scooter) was $800. They use a 48v pb acid battery that's supposed to let you go 20-30 miles on a charge whether you pedal or not. By pedaling you recharge the battery a bit and there is regen.

    We don't get it shipped until Aug. or Sept...but we got a test ride on one and I'll post some pix to this thread (which I had NOT read before tonight). We're really excited. There are so many times where one of us needs to make a short trip for a jug of milk or to get something at the post office or whatever and you hate to fire up the car for a short drive like that. This'll give us a chance for a little exercise without sweating up a storm. Top speed is about 20mph...not too bad really.

    I'm super excited about this, our second "EV" (the other being our golf cart at the lake house).
     
  19. 9G-man

    9G-man Senior Member

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    A couple weeks ago I got a deal on a bike with the Bionx system installed, off Craigs list.
    The guy selling the bike 'inherited' it from his deceased friend who had too many DWI's ( hence the reason he had an electric bike, and ....his eventual demise.)
    Anyway,
    The kid neglected to get the key for the battery case, nor the battery charger, so the bike was of no use to him. He just wanted to make a buck. He knew the retail value of the Bionx system and bike was about $1400.00 . He had it for sale at $700.00

    Being familiar with system, I asked all the right questions and when it became clear he had no key, charger, nor could show the system even worked, I offered him $200.00 for whole thing.
    Reluctantly, he SOLD!!!!!!!. What a deal.
    I had a locksmith make a key for $15 bucks and bought a charger $60.
    Took the fully functional system off the bike (didn't like the style) and will soon put it on something more to my liking. ( I love my Cannondale too much to mess with it.)
    It's one of the only e-bike conversion systems with true regenerative modes and braking. Now I will soon have two hybrids.

    [​IMG]
     

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  20. A Prime Factor

    A Prime Factor Formerly "I want my PHEV"

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    Let us know how that works out! That $800 e-bike is the one I test rode a while back.