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  1. M

    overclocking 1000W 48v direct hub on 24S?

    I run 24s on my 1000W GM901 motor (same as the Yescom motor) with the Lyen 12fet 4110 controller programmed to 45 battery amps and 100 phase amps. I am thinking about lowering the phase amps a bit, though, since the throttle is twitchier than I would like when cruising in the mid-upper 30s...
  2. M

    Yescom/Xcesseries Rolling Resistance

    I have the Golden Motor GM901, which should be identical to the Yescom motor, and it has very little drag. I heard people talking about cogging and resistance with DD motors, but I notice very little with my motor. I installed a 9C 2807 on my wife's bike and I find there is a bit more...
  3. M

    Building a beach cruiser/ board track bike

    The amp rating on the controller comes into play when under load, like accelerating at low speed, on inclines, etc. So when taking off from a stop or accelerating hard, you will hit that easily, completely independent of what battery pack you are running. So unless you pedal a lot from stops...
  4. M

    Building a beach cruiser/ board track bike

    If you are at all leery about batteries, I would stay away from RC lipo packs until you have done a LOT of research and soul searching. I went from SLA to lipo and glad that I did, but these little bricks can be very touchy. They are not at all plug and play, set it and forget it. You do...
  5. M

    Building a beach cruiser/ board track bike

    BTW, that "old bike" with the China Girl is a Walmart 32" Genesis Super Cruiser with the top bar welded on for the gas tank support. I cannot believe he was actually able to stuff a China Girl in that small opening. While I think the style is terrible, kudos to the builder for making it...
  6. M

    Building a beach cruiser/ board track bike

    Out of those two, I would go with the em3ev pack since it supports a 3C discharge rate, so over 48A. Whereas the ping pack peaks at 30A. But in order to get 30 miles out of a 15 - 16AH pack you are likely going to have to cruise closer to 20 MPH, or have tall gears and be able to pedal to...
  7. M

    Building a beach cruiser/ board track bike

    Good luck! I am usually leery of aluminum frames for motorized bikes, but I know people use them successfully for electrics so you will likely be fine. We experience a lot less vibration than gas bikes do. That is a great looking bike, btw! One thing you are going to want to take a hard look...
  8. M

    Show Us Your Homemade Battery Housing

    Thanks! The front cantilevers and rear regen stop the bike ok, but you really have to want to stop. Rear calipers will definitely help. I ordered a set of Tektro C326 side pulls, but the reach was a little too short. So I have a set of the longer reach C324 calipers coming in. The torque...
  9. M

    Show Us Your Homemade Battery Housing

    Wow, you guys do some really good work! When tasked with making a clean setup for my wife's bike, I went with leather panniers with wood sides. The wood sides allowed me to build a rigid frame with the batteries mounted to a shelf that can slide out for charging, and also was easy to make with...
  10. M

    Just got my ebike kit from yescomusa what battery?

    How well will a fast wind motor in a 26" wheel hold up on dirt trails? Is the terrain you are looking at flat-ish hike-and-bike trails, or hilly stuff? I have that motor running 24s (and love it), but only run on the street and it is pretty flat around here.
  11. M

    Electric cruiser bikes

    I finished my wife's cruiser a little bit ago. She insisted that I use her Huffy Panama Jack and that I keep it clean, so I built panniers out of cedar and leather to house the batteries and controller, with 4 "silent" CPU fans in the controller bag for airflow. I used some cantilever brake...
  12. M

    Wife Hopper beach cruiser

    Thanks Paul! BTW, here is a picture of the batteries snug inside the bag, before making the serial and parallel harnesses:
  13. M

    Wife Hopper beach cruiser

    The bulk of the build time was spent on making the saddlebags. While an easy, straightforward procedure, my lack of tools and wanting to get them right for my wife made me take extra time and care. I started with an 8 foot cedar plank ($5 from Home Depot), rough cut into 4" x 12" sections. I...
  14. M

    Wife Hopper beach cruiser

    The bike rides like a dream and pulls nicely. My wife is at a doctor's appointment this morning, so looking forward to us riding together over lunch! The neighborhood speed limit is 25 MPH, so my goal was a 30 MPH eBike that did not require pedaling and something in the 14s - 15s range (lipo...
  15. M

    Wife Hopper beach cruiser

    After sampling the sheer joy of my 24s GM 901 hub motor build, my wife decided she needed one. Okay, I actually decided she needed one. Due to medical concerns, it is a chore for her to pedal so her bike was sitting unused in the garage. I really wanted to use a better quality frame, but she...
  16. M

    Cooling fans wired serially?

    I was planning on making them similar to these I saw online, with wood sides due to the ease of construction and unique look (my wife is very fashion conscious, so wanting to make the bike as clean as possible): So the plan is to make the bags as small as possible, right now I am looking at...
  17. M

    Cooling fans wired serially?

    Those are neat looking converters, I might have to go with 2 of them should things not work out with wiring them serially. Tonight I tested one of the fans at 4s and it ran without any problems. I let it run for an hour and no magic smoke or funny smells. So I am going to try running the 4...
  18. M

    Cooling fans wired serially?

    Would using those cheap $2 12v voltage regulators work? One wired with each fan? http://www.radioshack.com/product/index.jsp?productId=2062600# I read online that overclockers have run the larger 80mm fans at 17v 24/7 for extended periods, but not sure how well these smaller ones would take...
  19. M

    Cooling fans wired serially?

    Still working on my wife's bike, and I am looking to put her controller in a small, custom leather saddlebag (and her batteries in a saddlebag on the other side). These will be made by me, my first leather project! Since the controller will be enclosed, I planned on using four 40mm computer...
  20. M

    controller that can use 24v and 36v

    Are you talking about using two different batteries, a 24V and 36V, and switching between the two? Or using one 36V battery, but with the option of using less voltage? If you are looking to use just one battery, it sounds like you should get a controller with one of those three speed switches...
  21. M

    need some help i have a 500 budget

    I guess pictures would help... He told you it was a Magic Pie and it turns out to be a bitty little 250W geared hub? That is a huge difference. If the guy did indeed misrepresent the bike, he is no friend and quite an a-hole. The good news is that the EVG is a fine frame to build off of, and...
  22. M

    need some help i have a 500 budget

    Unless the guy told you it had a BMS, I do not think he was trying to screw you. Like Dogman said, he does not run a BMS with lipo, neither do I on my two lipo ebikes. I do keep an eye on the pack charge while riding (simple volt gauge on one, CA on the other) and use a cell checker to monitor...
  23. M

    Remaining noob questions after reading all noob guides

    1) The controller does not know the C rate of your batteries and tries to take what it needs. In this case, would be exceeding the max continuous C rating by a small amount. So I think that means the batteries would provide the power, but at the cost of greatly reducing their lifespan? Not...
  24. M

    Reversing 24v 450w MY1018-1 question.

    As already said, switch the wires going to the motor from the controller and you are set. Pretty sure they are neutrally timed. I reversed one on my Mongoose with no problems.
  25. M

    M- wave kickstand

    I had heard of some of the gas bikers with the adjustable stand having issues with the legs loosening up too (the 2 strokes can vibrate everything loose), so I just used some blue loctite on mine. No problems for 400 vibe-filled miles. Then I blew it up and went electric ;)
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