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  1. M

    is it possible to convert 72v controller to 48v?

    hi all, is it possible to convert a 72v crystalyte controller down to 48v,,,can the LVC simply be removed or is there more to it than that, is there pics showing where the LVC is and how to go about that type of mod?
  2. M

    72v40amp controllers built without LVC

    is it possible to have 72v40amp controllers built without LVC therefore allowing any volts to be used,,,so i can use anywhere from 36v to 72v....of course i know the batteries will not be protected,,,, if in fact i were to have 36v - 72v controllers would there be reliability issues? is it...
  3. M

    Crystalyte sensorless controllers/wire harness instructions

    HI everyone, Here are pics of the new CRYSTALYTE sensorless controllers (AND INSTRUCTIONS) and information on how to hook up the WIRE HARNESS.FOR LARGER VIEW CLICK ON PICS ALL Crystalyte products can be purchased here: http://endless-sphere.com/forums/viewtopic.php?f=31&t=26500 VERY...
  4. M

    Is a 5304 more efficient, then a 5303?

    is a 5304 more efficient, then a 5303? is a 5303 harder on the batteries upon takeoff,whereas the 5304 is easier on the batteries as well as the controller.and is the 5305 even more efficient than the 5304?would better range be accomplished with the higher torque less speed 5305 than lets say...
  5. M

    is there a problem to have 72v80ah lifepo4 with a 50 amp con

    is there a problem to have 72v80ah lifepo4 battery pack with a 72v50 amp controller, i suspect not as the 80ah is representative of the amount of power stored in the cell,but i have to ask. :oops:
  6. M

    BMS facts and how to charge lifepo4 without it!

    This article is in 2 parts: part 1:direct comparison of sealed lead acid batteries & lifepo4 part 2:BMS facts and how to charge lifepo4 without it! This article is about batteries and my personal experience with both sealed lead acid (SLA) and lifepo4 batteries, and most importantly how to...
  7. M

    lifepo4 48v20ah at 19lbs is it really 20ah?

    how come i see some companys selling lifepo4 48v20ah packs that weigh 19.5lbs and others that weigh 26lbs ? i have a lifepo4 48v20ah (16cells at 3.2v20ah each)and its great except i now have one dead cell,the whole pack weighs in at 26lbs, with a 40amp 48v controller and a 5303 motor i get 32km...
  8. M

    Why don't we manufacture lifepo4?

    hi everyone does anybody know how we could go about manufacturing our own line of lifepo4's? what kind of investment would that take,,,i'm willing to take on this kind of project and dump my own money into this,,,with all the smart people here i'm sure we could make this happen. im fed up of...
  9. M

    what is the advantage of having 18 mosfets,,,

    hi everybody, what is the advantage of having 18 mosfets as opposed to 12 mosfets in a controller? is it for reliability? (less chance to blow a controller) or something else?
  10. M

    25amp crystalyte controller on 5303 motor?

    hi everyone ok,i had a 40amp crystal controller on 5303 motor with 48v/20ah (lifepo4) ,used it a full summer (about 700km) and the controller stopped working,luckily i had another 25amp 36v to 48v crystalyte controller which i installed and it works fine,,,will the 5303 eventually kill the...
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