Advertise on Bikeforums.net



User Tag List

Page 3 of 5 FirstFirst 12345 LastLast
Results 51 to 75 of 107
  1. #51
    Junior Member
    Join Date
    Nov 2006
    Posts
    12
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    for fast charging batteries..

    they are not hear in 5 or 10years..
    they are already here for 1 year now !
    iam a rc-heli-pilot, and we use this kind of batts for 1 year now..

    charging:
    i normaly charge with 4C (= 4times the current than the capacity of the battery)
    charged this way, the cells are full after around 14-16min

    friends are using homebuild charger with up to 10-11C charging current.
    they fill the batteries up to 90% of there capacity in 4min 30sec. !

    a batterypack for a e-bike (36V, 10Ah) would need about
    1680Watt of Power when you want to charge it in 15min
    with the looses of the charger (charger-efficience) let us say: less than 2000Watt


    2000Watt -> there are hairdryers and vacuum cleaners with that power
    so it should work with any 230V/110V supply

    i think after a 20+ miles ride a stop of 14min would be ok..
    charging only 5min would still be enough to go for some further 10miles

    so: the batteries are here, and we use them..
    another benefit: they are VERY robust (electrically)
    we have managed to get 1000cycles out of this batteries, at high charge-conditions..
    at same conditions (but lower charge-current) out
    NiMh cells seldom get over 200cycles, more like 100-150cycles
    and Lipos also see seldom the 200cycles mark...

    at same condition we can make OVER 1000cycles (with an 20% capacity loose) with this A123 Fepo4 cells (tested !!, not only advertisment from manufactor)

    so fast charging is not a unfullfilled wish.. its already here and buyable by everyone since 1 year

    for lifetime: the manufactor (we are not able to test THAT) says: batterylife/calenderlife:
    more than 10years
    (batterymanufactor say 4-6years for most NiMh and 2-3years for LiPos)

  2. #52
    Junior Member
    Join Date
    Nov 2006
    Posts
    12
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    and for driving bikes in cities..
    i have a nice idea..

    here in vienna 3 years ago the was a action: over 1000bikes were place all over the city by the city-government, for free use
    resüme: hundrets of bikes were stolen, not returend

    so they modified it:
    every bike is no "closed" and logged by an mechanism..
    when you want to use a bike, you have to register once with your bank-card on an terminal.
    so they know who you are.. this costs 1 Euro..

    driving the bike is free for 1 hour
    costs 1 euro for 2 hours
    costs 2 euro for 3 hours
    ...
    ..

    when you have finished driving, you bring it to a bike-station (there are duzzonds all over the city), logg the bike again and you are logged out of the system
    when your time is under 1 hour you pay nothing, otherwise its taken from your bank-card/creditcard

    so: said this - it works great
    no stolen/not returened bikes anymore..
    my girlfriend drives to here work (~30min) every day for free
    and home again

    now my idea:
    the bikes could all be electric !!
    most people drive less than an our..
    whent he bike is returend, and logged by the mechanism, it should be automatically connected to a charger
    so when the next user comes (maybe 20min later) the bike is already recharged again
    assuming that most people drive maybe 3-5miles and not more at once, the bike should be recharged in some few minutes..

    also: when you rent a bike the computer should tell you which bike is fully charged, or for how many miles each bike is cabable (with current charge-state) to go..
    when i only want to go 5miles to work, i don´t need a fully charged bike for example..

    this would be cool !
    i think many people would use the bikes even more (and for longer distances)

    another thing: i would wish, that parking-space in vienna would be cost-free for electric cars..
    and/or at least: at parking slots were you have to pay same price as for normal car, but with an electric-plug to charge your car for free !

    in vienna parking a car costs over 200euro a month

  3. #53
    Junior Member
    Join Date
    Nov 2006
    Posts
    12
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    last:
    for the idea of bike were the motor uses the gears of the bike
    (like http://www.cyclone-usa.com/ )

    there is also already such a bike..
    its maybe the most advanced out there (in my eyes) ?!?

    the bikes from biketec in swizzerland

    here a link to the catalog:
    http://www.biketec.ch/m/mandanten/14...tory23456.html
    (unfortunatly a "flash-catalog"
    you can jump through the catalog with the cursor buttons on the button or with "inhaltsverzeichnis" on and selecting directly


    full suspension biketec FLYER F8...

    the cool thing on the biketec flyer:
    1.) it uses a direct-drivemotor.. the motor is integreated in the pedals, about diameter of the big gear..
    for that the motor works noiceless, not like the cyclone-usa with uses a gearbox (= noise)
    2.) a electronics measures the power you pedal (not only the rpms like most of the e-bikes do (its cheap), but the real torque you pedal is measured).. it works very smoothlee, better than at any other bikes on the market and is very intuive to use
    3.) of course - its a great hill-climber..

    you can get for exmple the Flyer F8 with
    7 gears, 14, 21 or 27gears or even with the 14gears rolof-speedhub gear

    i think its in the moment one of the best e-bikes out there..
    has also won a lot of tests..


    here detailed pic of the T-series:
    http://www.biketec.ch/m/mandanten/14...rie_Herren.jpg
    Last edited by Kraeuterbutter; 06-12-07 at 08:52 AM.

  4. #54
    Senior Member
    Join Date
    Jun 2007
    Posts
    431
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Kraeuterbutter
    for fast charging batteries..

    they are not hear in 5 or 10years..
    they are already here for 1 year now !
    iam a rc-heli-pilot, and we use this kind of batts for 1 year now..

    charging:
    i normaly charge with 4C (= 4times the current than the capacity of the battery)
    charged this way, the cells are full after around 14-16min

    friends are using homebuild charger with up to 10-11C charging current.
    they fill the batteries up to 90% of there capacity in 4min 30sec. !

    a batterypack for a e-bike (36V, 10Ah) would need about
    1680Watt of Power when you want to charge it in 15min
    with the looses of the charger (charger-efficience) let us say: less than 2000Watt


    2000Watt -> there are hairdryers and vacuum cleaners with that power
    so it should work with any 230V/110V supply

    i think after a 20+ miles ride a stop of 14min would be ok..
    charging only 5min would still be enough to go for some further 10miles

    so: the batteries are here, and we use them..
    another benefit: they are VERY robust (electrically)
    we have managed to get 1000cycles out of this batteries, at high charge-conditions..
    at same conditions (but lower charge-current) out
    NiMh cells seldom get over 200cycles, more like 100-150cycles
    and Lipos also see seldom the 200cycles mark...

    at same condition we can make OVER 1000cycles (with an 20% capacity loose) with this A123 Fepo4 cells (tested !!, not only advertisment from manufactor)

    so fast charging is not a unfullfilled wish.. its already here and buyable by everyone since 1 year

    for lifetime: the manufactor (we are not able to test THAT) says: batterylife/calenderlife:
    more than 10years
    (batterymanufactor say 4-6years for most NiMh and 2-3years for LiPos)
    Kokam lipo batteries have taken RC abuse for a few years with good results.Some ebikers have also had great results with them as well as record setting electric battery cars.Yes the technology IS here NOW! It might take some volume pruchase power to get the ebike packs made at a much better price.1000 Kokam packs would cost about one half the price per watt hour than RC packs right now. Before any ebike manufacture gets to the point of including larger lipo packs with a complete ebike they would need to make lighter more efficient motors to get the best use of these lipo batteries.Otherwise wasting battery power would be a shame in the pocket book.I discussed this with Michale Jones ( the founder of Phoenix Motorcars) at a meeting in Lahaina Yacht Club a few years ago about him getting rid of his heavy Advanced DC motors and going brushless as well as going with Kokams. Looks like he did just that.
    http://www.kokam.com/english/custom/...sch=&key=&no=1
    Last edited by EbikeHawaii; 06-26-07 at 04:24 AM.

  5. #55
    Super Moderator Allen's Avatar
    Join Date
    Sep 2005
    Location
    Atomic batteries to power; turbines to speed
    My Bikes
    Salsa La Raza, Panasonic Electric, Bria, Bamboo touring, Bamboo cargo
    Posts
    4,682
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Kraeuterbutter
    last:
    for the idea of bike were the motor uses the gears of the bike
    (like http://www.cyclone-usa.com/ )
    Panasonic makes an ebike that allows the motor to use the gears as well. Giant used Panasonic's technology on their Lite/Twist models.
    http://www.panabyc.co.jp/en/product_du.htm
    http://www.electricvehiclesnw.com/main/lite.htm
    My Morgan is now a Clydesdale
    The disadvantage of the Panasonic system is the bike frame has to be designed around the motor unit.

  6. #56
    Senior Member
    Join Date
    Jun 2007
    Posts
    431
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by AllenG
    Panasonic makes an ebike that allows the motor to use the gears as well. Giant used Panasonic's technology on their Lite/Twist models.
    http://www.panabyc.co.jp/en/product_du.htm
    http://www.electricvehiclesnw.com/main/lite.htm
    My Morgan is now a Clydesdale
    The disadvantage of the Panasonic system is the bike frame has to be designed around the motor unit.
    A geard motor system could be hung on the back axle like a Currie USPD and sold as a kit but the right way to do it with a protected motor a complete ebike would be be a much better package.All ebike kits have some downfalls.
    Last edited by EbikeHawaii; 08-04-07 at 01:56 PM.

  7. #57
    Member
    Join Date
    Apr 2006
    Posts
    44
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    while it is not an electric bike... this looks very interesting

    http://www.revopower.com/

    but i would love to see a fuel cell powered bike some day soon.

  8. #58
    Senior Member
    Join Date
    Jun 2007
    Posts
    431
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Skyway6
    while it is not an electric bike... this looks very interesting

    http://www.revopower.com/

    but i would love to see a fuel cell powered bike some day soon.
    Hydrogen takes more power to produce than gasoline or batteries.Its a false economy.

  9. #59
    Member
    Join Date
    Apr 2006
    Posts
    44
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i agree i read that hydrogen while clean burning takes lots of energy to produce.
    i was thinking more along the lines of a ethanol based fuel cell

    http://running_on_alcohol.tripod.com/id30.html

  10. #60
    Senior Member Lock's Avatar
    Join Date
    Aug 2005
    Posts
    50
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by JeanCoutu
    If you pedal normally and use the assist sparingly (only help uphill, etc.) you can expect to use ~10wh/km. 30K miles is 48K Km, so you'd need ~480Kw. With an overall charging eff of ~75%, to get that kinda power in an hour at 115v would take ~5.217KA. That's ~116 times the rating of the baddest household 115v plugs I know of, at 45A. Not gonna happen.
    A "recharge" for a pack like this could be done in less than a minute... by swapping the pack.
    tks
    Lock
    Human-electric hybrid pedestrian

  11. #61
    Senior Member Lock's Avatar
    Join Date
    Aug 2005
    Posts
    50
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Doug5150
    No.
    I'm rather disappointed that this forum was titled "Electric Bicycles" and not "Motorized Bicycles". For a lot of the uses that people expect, a gasoline-engined bicycle can meet them WAY better than any electric system out there can, and the gas engine setup is still way more fuel-efficient than any other vehicle on the road.
    ~
    Can't take a gas vehicle on public transit. Electrifying two wheels means that the energy can come from many sources - nuclear and coal and natural gas, but also hydro and wind and solar...

    Many options, and some much cleaner than gas or food for energy. Electrics are odor-free too, with no tailpipe emissions leaking directly into roadways. Zero liquids to either evaporate up your nose or drip on to pavements, get washed into drinking water, then down your throat. Electrics are generally quieter than gas engines?

    I am only familiar with personal electric vehicles with motors rated at well less than one horsepower. This is quite a bit less power than most small gas engines...

    tks

    Lock
    Human-electric hybrid pedestrian

  12. #62
    Senior Member Lock's Avatar
    Join Date
    Aug 2005
    Posts
    50
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by adamtki
    I'd like to see a bike with bottom bracket based motor. Something like optibike, but nothing as fancy and more regular looking. With a BB motor, the motor is smaller and lighter (but a little noisier because of the internal gearing), center of gravity is low, you can use normal wheels for both front and back, and the motor will always be operating at peak efficiency because you can use your bike's regular gears. And there might be enough room near the bottom bracket to stuff a battery there too. The whole thing could possibly weigh less than 40 lbs.
    Earlier, someone mentioned the Protanium® lithium polymer batt pack supplied by Schwinn?

    A pic from the Protanium site to sort-of illustrate the diff's between a bike that is pedal-only and one with assist:
    Attached Images Attached Images

  13. #63
    Senior Member
    Join Date
    Jun 2007
    Posts
    431
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    "I'd like to see a bike with bottom bracket based motor. Something like optibike, but nothing as fancy and more regular looking. With a BB motor, the motor is smaller and lighter (but a little noisier because of the internal gearing), center of gravity is low, you can use normal wheels for both front and back, and the motor will always be operating at peak efficiency because you can use your bike's regular gears. "


    http://video.google.com/videoplay?do...65780878321081
    Last edited by EbikeHawaii; 08-04-07 at 01:56 PM.

  14. #64
    Member
    Join Date
    Jun 2007
    Location
    USA
    My Bikes
    Trek MTB + 2 e bikes
    Posts
    34
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Optibike is like 7 grand, isn't ebikehawaii setup like a few hundred dollars, i'd go for the older setup everytime in that case. Use the $6,500 savings for some expensive batteries..

  15. #65
    Senior Member
    Join Date
    Jun 2007
    Location
    Vancouver, BC
    My Bikes
    Rocky Mountain electric bike
    Posts
    273
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by krushnoi
    Optibike is like 7 grand, isn't ebikehawaii setup like a few hundred dollars, i'd go for the older setup everytime in that case. Use the $6,500 savings for some expensive batteries..
    While Optibike certainly charges a premium for the power system, on a bicycle component level it's not even comparable to ebikehawaii's setup.
    http://www.optibike.com/%20%20index....d=44&Itemid=24

    Perhaps ebikehawaii can give an exact cost breakdown of his bike for comparison. Another thing to keep in mind is I don't think all the parts can be bought for his bike, but I'm sure he can explain what's involved in the construction.
    Team Mavic, winner of the 2003 Cycle to the Sun race

  16. #66
    e-Biker
    Join Date
    Aug 2006
    Location
    Mississauga, Ontario, Canada
    My Bikes
    Gary Fisher, Strong GT-S eBike
    Posts
    951
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by EbikeHawaii
    Hydrogen takes more power to produce than gasoline or batteries.Its a false economy.
    Hell yeah!

    The "Hydrogen economy" is just to maintain a similar type of system as the current gasoline industry where the same companies will simply sell you another fuel.

    We're better off by redirecting research money towards better electrical systems rather than wasting it on hydrogen.

    I still believe that if we really wanted to, we'd already have a very functional electric car that could meet all our needs.

  17. #67
    e-Biker
    Join Date
    Aug 2006
    Location
    Mississauga, Ontario, Canada
    My Bikes
    Gary Fisher, Strong GT-S eBike
    Posts
    951
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Robbie Hatfield
    "After resting for 15 minutes with 1/4 mile to go ..."
    WTF? 15 minutes rest when you have only 400M (1/4 mile) to go? I realize it's uphill but just finish the race and then rest for a few hours afterwards.

  18. #68
    Senior Member
    Join Date
    Jun 2007
    Location
    Vancouver, BC
    My Bikes
    Rocky Mountain electric bike
    Posts
    273
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Robbie Hatfield
    Go here to read Randy's version of what happened on his volcano climb.

    http://www.solarnavigator.net/electric_cycles.htm

    Here's a key exerpt from his story.

    "After resting for 15 minutes with 1/4 mile to go the 3 in the Mavic team passed me by to win I think 3 in all, I did get a picture of them passing. Just for the hell of it I jumped on my bike and it took off to my surprise and finished in 3 hours and 3 minutes 58 sec, using 37.334 amp/hours in 37.35 miles."

    I'll add the rest of the true story as I was with Gary Prime on that fateful day.

    Gary Prime, CEO of Evercel, Inc. was waiting at the top of the volcano. When he saw the lycra clad non-power assist riders cross the line first, he spit his coffee out and threw his clipboard to the ground. He began to stomp on it angrily shouting "Damn that Draper!!! All of our investors are watching this event!!! They've decided to invest in team Mavic's wardrobe for next year instead!!!! I HATE YOU DRAPER!!!!!!!". Evercel, Inc. was finished after that. The world never got nickel zinc batteries all becasue Randy is a loser.

    Robbie
    So that's what happened to Evercel! Thanks for the info.
    Team Mavic, winner of the 2003 Cycle to the Sun race

  19. #69
    Senior Member
    Join Date
    Jun 2007
    Posts
    431
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Lowell_
    So that's what happened to Evercel! Thanks for the info.
    Info from liers that chase me around the forums will not help anything.

  20. #70
    Banned.
    Join Date
    Jun 2007
    Posts
    66
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If you yourself were not a liar Randy, why would you need to change forums so often?

    Robbie

  21. #71
    Senior Member
    Join Date
    Jun 2007
    Posts
    431
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Robbie Hatfield
    If you yourself were not a liar Randy, why would you need to change forums so often?

    Robbie
    For calling people like you names you deserve and when that happens no one will get anymore productive information.

  22. #72
    Banned.
    Join Date
    Jun 2007
    Posts
    66
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I don't understand why you think I deserve to be called names? I'm not calling you names? I'm only asking that you be consistent and accurate when you make claims. Does this make me a bad person?


    Robbie

  23. #73
    genec genec's Avatar
    Join Date
    Sep 2004
    Location
    san diego
    My Bikes
    custom built, sannino, beachbike, giant trance x2
    Posts
    22,530
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by workingbike
    Did you mean without changing the battery one time?
    Possibly, there is a company down in Texas that has said they will ship this year, an ultracapacitor that will have 2.8-3 x the power density of NiMH at HALF the cost of lead acid and millions of charge cycles. The first units are going to ZENN cars in Toronto who say they will be shipping the cars next year. Claims include working down to-20C, scalable from pacemakers to trucks and protection against catastrophic shorting.
    I have to say I have some skepticism, but if they do it, it changes everything.
    Look for eestor on google.

    Ah, the Flux capacitor eh?

  24. #74
    Senior Member Lock's Avatar
    Join Date
    Aug 2005
    Posts
    50
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Future of ebikes... OK, lessee...
    Design priorities are *not* speed and distance, but SAFETY, COMFORT, PRACTICALITY and RELIABILITY.

    Get rid of the pedals, the chains, the sprockets and gears, and the seat, and you get something like this:

    Make the wheels smaller and you get a form factor that looks something like this:

    In other words, a vehicle that is a couple of feet shorter overall than the Victorian pedal bike, but with the same wheel base.
    Make it light weight (less than 50lbs) and a fold-up. Fits in a bag. Flies as luggage. Parks in a closet. Only two moving parts (the wheels.)
    Put the lithium in the deck, and make it swapable. Hub motor in the front wheel.
    Super reliable. No greasy bits. Tires that don't get flats and smooth pavements.
    Kick scoots feature half as many injuries as pedal bikes and those injuries are less severe.

    Some will say this is not a "bicycle" (Latin isn't that? For "two wheels", not "two pedals"?) `cause it doesn't have pedals. Go argue with von Drais.


    tks

    Lock
    Alive, and Kickin', in the T-Dot.

  25. #75
    Member
    Join Date
    Jun 2007
    Location
    USA
    My Bikes
    Trek MTB + 2 e bikes
    Posts
    34
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Lock
    Some will say this is not a "bicycle" (Latin isn't that? For "two wheels", not "two pedals"?) `cause it doesn't have pedals. Go argue with von Drais.


    tks

    Lock
    Alive, and Kickin', in the T-Dot.
    Unfortunately the law usually states bicycles must have useable pedals (as well as electric bikes) good luck getting these things legalized on streets, though it seems like there's no reason why they shouldn't since people jog and walk along streets.

Page 3 of 5 FirstFirst 12345 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •