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  1. M

    Will i get the same range from 14S 15Ah vs. 21S 10Ah?

    The question i believe you are asking is this: will the reduced power losses due to decreased current (Ploss=I^2 * r) be greater or lesser than the energy losses due to the increased gear reduction ratio you will require for the same speed. I would expect that increasing the voltage would...
  2. M

    New GNG Mid Drive Brushless 60V650W

    Does anyone know an online supplier of 64mm bcd steel single speed sprockets? 32T all i can find locally for 64bcd is those 12speed alloy sprockets which i don't think will last too long under load, they're pretty pricy too. and wishes posted a link to #25 drive sprockets earlier in this...
  3. M

    Cell voltages and advice on wiring 15s BMS

    I have no means of balancing a single cell unfortunately. Maybe ill invest in a hobby lipo charger and do this to be safe. These are the cell voltages as they came from hobbyking AU so not sure on why its lower than the rest. The bms is one of these: http://bestechpower.com/555v15spcmbmspc...
  4. M

    Cell voltages and advice on wiring 15s BMS

    Hey guys i'm soon to attempt to wire up my first BMS for a 15s LiPo battery pack based on 3 of these: https://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=22586 So far i have opened one of these packs and separated the cells into 2 groups of 5s as to wire up each half in series...
  5. M

    Aprilia Enjoy

    yeah had to sell to make room for another project. was looking good but i didn't have the need for such a bike.. absolutely not they're a great bike, well built and very modular which i like. for instance i had to replace the battery lock which i was able to do in less than half an hour with...
  6. M

    10s Paralell packs charging / BMS solution

    Would it be possible to wire up this unit with the balance leads in parallel: http://www.batterysupports.com/36v-37v-42v-10s-45a-10x-36v-lithium-ion-lipolymer-battery-bms-p-266.html then charge by directly wiring it up with a 300-500W 42v LED driver? or is there additional electronics...
  7. M

    10s Paralell packs charging / BMS solution

    Hi guys, i need help on this! I have 2 10s 4.5Ah LIPO packs which i plan on putting together in parallel for a total of 9AH at 10s I am looking to put together a charging solution where i can charge both packs simultaneously off the one charger, and is simple and reliable enough for...
  8. M

    Aprilia Enjoy

    I took 5 min today to remove the white wire loop on the stock controller, wow what a difference it made! even on the original NIMH cells the top speed peaked at around 50km/h a must do modification on the stock bike. On another note the cells and new controller are in the mail. eta 1-2...
  9. M

    Aprilia Enjoy

    I'd like to run the bike on 10's using two of these: ZIPPY Flightmax 4500mAh 10S1P 30C Long Lipo Pack (mainly because i plan on using this cell config with another project so having interchangeable packs would be great) Then charge using: iCharger 1010Bplus 300W 10s Balance/Charger (+...
  10. M

    Aprilia Enjoy

    so I've decided to join the Aprilia bandwagon! This bike appears to have very little use, I would like to update it to LIPO, what cell configs are you guys using? I also plan on doing a bunch of upgrades such as better forks, disk breaks, and hopefully a power upgrade to get more than 25k/h...
  11. M

    New Project: KX-E Supermoto

    unfortunately the motor shaft is 5/8 and the sprocket is 16mm, so unless there is a #218 sprocket that is 5/8 diam or less reaming isnt an option
  12. M

    New Project: KX-E Supermoto

    i have had similar thoughts, although the conclusion i've come to is to go ahead with using these motors with the idea that the mid monster will be compatible with the controllers i buy, so down the track i can swap if need be. i would like to see 16kw peak combined with these motors, i don't...
  13. M

    LMX P2 : Freeride trials motorcycle frame development

    simply awesome! I'm after your opinion on the motor arrangement as my builds' looking fairly similar minus the home built frame. Do you think its wise to add an additional bearing on the far end of the motor shaft to brace against chain tension? (especially for you as bashing the swing...
  14. M

    New Project: KX-E Supermoto

    hmm yep bummer. well i guess she'll have to be a fun machine only.. maybe one day ill transfer the components to a compliant frame and follow that dream. ill ponder on that idea of pedals i cant see it being a major issue as there's a portion of motor shaft protruding on the opposite side that...
  15. M

    New Project: KX-E Supermoto

    or maybe i will add pedals for show and have a 200w limit switch for when the po po roll past :wink:
  16. M

    New Project: KX-E Supermoto

    haha unfortunate i don't think pedals are going to fool anyone.. Actually I'd love to eventually get it all compliant and road registered, of course that's a long way off. The plan is to first build, test/fix bugs, then once everything's running smoothly approach an engineer to see whats needed...
  17. M

    New Project: KX-E Supermoto

    here's whats happening :mrgreen: i picked up this 2004 kxf250 roller for a pretty awesome price thanks to the guys down at Eastern Motorcycle Wreckers (Victoria, AUS) the plan is to drop it on 17in motard tyres and combine it with 2 GNG big block motors i picked up from mrtao a while back...
  18. M

    GNG, 1000W 48V BB-drive, $400

    i'll be getting 2 shipped to Victoria, Australia. if there are any other Aus buyers here i'm happy to do a group order :D LR what controller would you recommend for pushing this motor to max on 20s? good find! mitch
  19. M

    New freeride project - LMX P1

    so good! :D cant wait to get started on my build these uni holidays
  20. M

    GNG second trials build

    I would really like to do this cross over moto/ cycle trials electric build, i even have a trials bicycle available for use. However sorting the correct geometry with suspension is whats holding me back. i was initially thinking of adding a pivot to the bottom tube where it connects to the BB...
  21. M

    electric trials / freeride build "gasles"

    And yeah, I see what you mean speed. Combining the electric motor with the trials gearbox could be an interesting project!! If I had both lying around I'd offer to be the or to try it, but perhaps later on :D
  22. M

    electric trials / freeride build "gasles"

    Interesting, why don't they just have a class with no rear brake that'll fix the hoppers haha, would make it very interesting for the spectators too! regarding the mechanical clutch I was under the impression having this on the electric motor would mean for a very short lasting...
  23. M

    electric trials / freeride build "gasles"

    and gwhy! that pic looks to be a of a gagas contact am i correct?
  24. M

    electric trials / freeride build "gasles"

    hey speed, by hand operated clutch are you referring to a mechanical clutch or an electronic one like in gwhy's build? i do like the sound of multiple speed settings too! mitch
  25. M

    electric trials / freeride build "gasles"

    i haven't had much trials experience at all so i think these will get me through to later on like you say. but yep well noted! cheers, Mitch
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