my new bike out of the box

Discussion in 'Electric Bicycles' started by will_start, Apr 22, 2008.

  1. will_start

    will_start Member

    Hey All,

    I have been posting over in the 2 Stroke area for a while
    and have finally got my 2 Stroke bike under control after 6 months
    on and mostly off road works.

    My bikes are old, and worn out, and Frankly not up for the Commute
    on a long-term basis.

    So I was looking to buy a bike and also add electrics to it as well.

    So I have landed with the below bike.

    The Panther

    I went for a ride on the bike last weekend as a test ride,
    and the thing weighs a ton compared to my other bikes.
    But I wanted a solid bike, and it looks like I've finally got one.

    So, I wanted a 500W motor which wouldn't fit the frame,
    so he's given me a 1000W motor for the same price.
    The 200W motor I tried, just didn't have any real grunt to it.

    Only issue is now I have to wait for a Battery order,
    or go out and buy myself a better battery.

    Anyone know where I can get good a quality 20 AH Battery
    in Australia ?

    The below is the prices I was given on LiFePO4:

    Then we go to the latest LiFePO4 which is a jump up in price:
    10AH - $520 upgrade
    20AH - $920 upgrade
    30AH - $1,290 upgrade

    How do these prices compare ?

  2. SirJakesus

    SirJakesus Guest

    Wow that looks like a really awesome Ebike for sure. Given the fact that you have a 1000w motor the more AH the better for more grunt and better range. It looks like their pricing scale on the batteries is made so the higher the AH the less $ per amp hour they cost. If it's within your price range of course use the 20 or 30 ah battery. Personally I like having an over abundance of capacity in case I want to go on an extra long trip OR just so I don't have to discharge the batteries as much. The more you keep from discharging your batteries completely the longer they will last. Say if normally you only eat 19ah from your 30 pack it should last 1/3 more charge cycles than if you drained the 20ah completely.... It's up to you though, the batteries are quite expensive right now and paying 1300 for a battery plus the bike is getting in the range of owning a motorcycle rather than a bike. Let us know how she rides, I like my ebike because it gives me a little exercise and it's really quiet (even though it's a geared system). But yeah it is heavier than the rest of my bikes.
  3. highrider

    highrider Guest

    Last edited by a moderator: Apr 30, 2008
  4. will_start

    will_start Member

    The bike is quite heavy to ride when the battery is discharged, as its 50kg.
    But the cruise factor makes it a good ride. When you get it running on straights, it really hums along. The front and back shocks means it will handle just about any bump in the road.

    The disc breaks make it safe tho.

    At the moment, I only have an 8AH battery so only get about 5km before
    it starts to settle out.

    the motor I have is apparently a 1500W version.

    Its not been without its issues already, as the back wheel had spokes
    not tensioned out of the box, so some came loose.
    Once I tensioned the wheel its fine.

    I compared to the site high-rider, and the price I have of
    30AH - $1,290 upgrade, compares better than the below.

    24v 20AH Battery LiFePO4 (3000 re-charges)
    FREE 8A Charger and Battery Bag (VALUE $279) Use on up to 3000 Watts Motors 1 YEAR WARRANTY
    Price $ 1299.00
  5. recumpence

    recumpence Member

    Why do more people not use Lithium Polymer batteries? They are alot lighter and higher current density than LifePo4 and they cost less. They also can put out more current per ounce than anything else. My 10 AH 48 volt pack was $435. It is capable of 100 amp output continuous.

    Why are Lipo cells not used more in E-bikes (or at all)?

  6. will_start

    will_start Member

    fire in the hole


    I had the ZBike guy come out and we "worked" on my electrics,
    end result was a fire and burnt wiring after my first ride.

    Its taken me a week to get around to accepting this
    disappointment. :eek:

    I'm going to try and work out how to wire this thing back together.

    Not sure how the forum will help, but at least it will document the issue.

    See attached Circuit diagram for bike in PDF format.

    Attached Files:

  7. kjparker

    kjparker Member

    If you want a hand, give me a hoy, I'm pretty handy with the soldering iron!
  8. will_start

    will_start Member

    That would be awesome, after all the effort of doing a unhappytime motor
    merry-go-round, I wanted hassle free...

    PM me for a free night next week.
  9. sparky

    sparky Active Member

    I think the short answer is that most people just don't know.

    However, I haven't found it true that Li Polymer batteries are cheaper. $435 for a 10Ah battery seems pretty cruddy to me.
  10. recumpence

    recumpence Member

    That is a 48 volt 10AH battery. Also, it only weighs 80 ounces.

    That is very innexpensive for the watt hour rating as well as very light.

    The best price I have ever seen for a LifePo4 was $600 for the same rating battery and it weighed ALOT more.

  11. SirJakesus

    SirJakesus Guest

    I think the Bionx uses Lipo batteries. I think you get more charge cycles from LifePo4 but I'm not sure.
  12. sparky

    sparky Active Member

    Yea... I haven't really been paying too much attention to price. I was fairly confident the price *was* higher because of the two main benefits for choosing Lithium Polymer: smaller size, and more recharge cycles. More money or less, it's worth it.
  13. sparky

    sparky Active Member

    I believe my mind has been mixing up Lithium polymer & LiFePO4... I don't know what to believe anymore.
  14. Ypedal

    Ypedal Member

    Rechargable lithium batteries come in 3 flavors right now..

    - Li Managnese
    - Li Cobalt ( often called LiPo )
    - Li FePo4

    BionX uses Sony LiMn 18650 format cells ( similar to laptop cells ) btw.

    Li Cobalt , the 48v 10ah pack that puts out 100 amps that recumpence talks about, is great.. best power to weight.. only potential drawback and i think this is why it's not as widely used in ebikes.. = safety. If you don't treat them right.. abuse them. over discharge.. over charge.. etc.. they can go up in flames.. quite spectacularly at that... however.. that being said.. treat them right and with respect.. they are quite good !

    In RC world, most people use milliamp hour packs.. at moderate to low voltage.. but on ebikes. you get amp/hour packs at higher volts.. like matches vs dynomite..

    LiMn and LiFe, claim to be " safe " .. even if abused.. you may kill them prematurely but they are not supposed to erupt no matter what.

    LiFePo4, now .. this is a whole new world of lithium.. lower Voltage per cell, more weight per ah.. but.. if the claims are true, they should last alot longer than the rest. still remains to be proven.

    I've used them all.. and peronal preference at the moment is LiMn.
  15. will_start

    will_start Member

    Well after much soul searching, I have decided to give back my Ebike.
    The electrics had an issue that I couldn't fix.

    Much credit to Steve from Zbike.
    The guy has offered help all along the way.