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  1. J

    Addind 10 more amps of capacity and bigger connectors

    I have a mongoose dolomite fat tire bike and I replaced the rear wheel with a 72 V 3 kW motor hub. It is awesome. Has plenty of torque off road and a good top speed of about 44.9 mph. I'm only using 3 multistar 6s 10a 10c lipos wired in series For 72 volts and I'm using XT 60 connectors. Going...
  2. J

    16mm torque arms

    My latest build is a 72 V 3000 W rear hub motor and controller. The axles on this monster are 16 mm. I can't seem to find any 16 mm torque arms anywhere on line. Are any of you guys that are running a high powered system fabricating you're own 16mm torque arms? If you bought 16mm torque arms...
  3. J

    Best way to narrow shorten tighten Drop Outs

    My rear drop outs are 190mm. The rear hub motor axle is 170mm. What is the best way to shorten, tighten, narrow the rear drop outs 20mm? Im guessing to use washers are evenly tighten the axle nuts back and forth? Frame is steel so bringing it in an inch shouldnt be a problem right?
  4. J

    Mongoose Dolomite Fat Bike 72V 3kW Options

    I recently bought a Mongoose Fat Tire Dolomite bike for a rear hub conversion. Im having a problem finding a rear hub motor that has long enough axles. The rear dropouts on the Dolomite are 190mm. Ive heard from some on here that you can push the frame in a bit to make it fit a 170mm axle...
  5. J

    18650 VS Lipo

    Maybe its me since I come from a long lineage in RC. Ive been using lipos for a long long time. The biggest I have are 6s 13A 35C(supposedly) and 6s 10A 10C. These batteries are dirt cheap thru Hobbyking. I paid $50 per 6s 10A 10C lipo a few months ago and bought 6. For 300.00 bucks I cant...
  6. J

    Mid Drive OR Rear Hub?

    Just got a 26" Mongoose Dolomite Fat Tire Bike for my next build. Going to use a Luna Cycle 72v 3kw or 72v 7.5kw Cyclone mid drive, OR a 72v 3kw rear hub. What do you think is better suited for off road, a mid drive or rear hub?
  7. J

    Mid Drive Motor changing gearing changes gear ratio?

    This is probably going to be one of the dumbest questions posted on endless sphere today. If you are using a mid drive motor in your E bike, when you change your gearing while you are moving along, does that change the gear ratio going to the mid drive motor? I’ve built several rear hub E bikes...
  8. J

    Fat Tire E bike Conversion

    I just finished my first e bike build using a 48V 1500W rear hub. Im 6'4'', weigh 205 pounds and it will pull me up some big hills off road and on. However, I want more power. Something in the 3-5kw should do the trick. Have anyone of you guys used a fat tire bike for an e bike? I dont care...
  9. J

    E bike Gearing Why Bother

    Are any of you E bike guys using just one gear for off road and on road? Im finishing up my first Mountain 26 inch E bike build. Im using a Voilamart 48V 1500W rear hub motor. Ive electrified, fabricated, and modified quite a few push scooters and peddle go karts to E vehicles. All my other...
  10. J

    Pedal Go Kart to Electric Go Kart

    My friends son dropped off an old pedal go kart a few weeks ago. Finally got around to starting this project. Ive converted several E scooters and made an RC FPV lawnmower 2 years ago without to many problems. This however is my first electric go kart conversion. The picture below is after...
  11. J

    Motor Temperatures

    Coming from an RC background, most people say that any motor temperature under 160° F is great. Anything over 200° F is killing the motor. Since Ive only built 2 EVs to date, I was curious over this. According to a lot of research, pending on the insulation levels, some motors are safe to...
  12. J

    48V 1000W MY1020 ZY1020 differences?

    Both motors specs are 48V 1000W but MY1020 Amps are about 6 higher. The MY1020 has a T8F sprocket and the ZY1020 has a #25 sprocket both 11 tooth. Can anyone tell me if the sprockets and motor shafts are the same diameter. Can you swap sprockets from one motor to the other? Are both motor...
  13. J

    motor sprockets

    ZY1020 48v 1000w electric motor sprockets, where are you guys getting them from? #25 dual bevel sprockets. I can't find a sprocket bigger than a 13t. do they make a 15 20 or 25 tooth sprocket for this motor?
  14. J

    How to for Wiring schematics for electric controllers

    Bought this controller on eBay. In the picture. There is one plug with no marking in English. I'm assuming this 3 wire one is for the throttle. Anyone know which wire is the signal, posative and negative. It's for a scooter so all I need are the battery, motor, throttle and brake connectors.
  15. J

    24V 350W to 24V 500-750W

    I have a 24V 350W motor. Would it be worth it to get a new 24V 500 or 750 Watt motor? Would the extra 150-400 Watts on the new motor make that big a difference in torque and speed?
  16. J

    BladeZ EX350 Electric Scooter Brake Assembly

    Hi there. I recently received a free beat up Bladez EX350 scooter that was missing the brake caliper assembly. Im looking for the front brake caliper assembly. Its a front handbrake on the left-side of the scooter. I cant seem to find the caliper assembly online anywhere. Ive found a...
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