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  1. dirtdad

    MAC motor sucked in a lot of water

    I rode my MAC motor in a light rain / drizzle for about 12 miles. It worked fine for the next few days, about another 30 miles, then it started to run rough and turned off after a few seconds. It was definitely a hall sensor issue, but I had not rearranged the connectors, so I presumed a bad...
  2. dirtdad

    Can you get Grin's Electronic Freewheeling using the Cycle Analyst and a 3rd party controller?

    I have a CA v3 and a geared hub motor, no clutch. Of course I can get Electronic Freewheeling if I got the Phaserunner controller. But I have several good Infineons all wired for the CA. Does the CA alone allow for Electronic Freewheeling? I am thinking there may be a firmware version needed for...
  3. dirtdad

    Will anyone do an Infineon Programming service for me?

    I have a new Infineon controller - complete with 9 IRFB4110 Mosfets, 100V capacitor, and beefed up traces on the board. It is has the programming JST-SM connector. I took a pass at programming it, but the driver for the interface does not like windows 11, then the usb connector for the interface...
  4. dirtdad

    48 Pole Torque PAS on a Cycle Analyst?

    I have been happily using a Sempu torque-sensing bottom bracket hooked up to a Cycle Analyst, but the BB spindle rounded out and it is time for a replacement. Hoping to get a plug-and-play replacement, I got a Sempu BB on Aliexpress, which looks identical to my dead one. But Sempu upped the pole...
  5. dirtdad

    Is this a bad clutch or controller issue or what?

    I captured on video how power cuts out intermittently. The geared MAC motor does make a grinding sound at low power when power drops out. So maybe a bad clutch confuses the controller? I am not sure, but this is what it looks like. The thumb throttle starts the motor but as I hold the throttle...
  6. dirtdad

    System Troubleshooting Help

    Hi all. My new DIY eBike has 3 problems that Grin, em3ev and I have been unable to diagnose after exchanging dozens of emails over a couple months. I am looking for some forum assistance. Lots of info here and I am happy to provide more: 1) Intermittently during high output, system output drops...
  7. dirtdad

    Electric Century - 100 mile ride on an Electric Bike

    Since putting together my Electric Ute http://www.endless-sphere.com/forums/viewtopic.php?f=6&t=13834 I have been toying with the idea of a reaaally big one day ride. 100 miles, or a century ride as roadies call it. I don't know if anyone has done it and posted on it yet. I mean, Dr. Bass...
  8. dirtdad

    Kona Ute Conversion...in progress

    I have wanted to make a longbike for a while. So now that I have access the the Kona Ute, I decided to go for it. The Ute is a long wheelbase cargo type bike. For 2010 it comes with front and rear disc brakes. It comes as a 700c bike, but my only motor sitting around was a 26" model. I am...
  9. dirtdad

    Changes to 18 FET Infineon Controllers

    The next round of 18 FET Infineon controllers we are getting will have some changes to them, based on our requests and the requests of others using this big controller. We made some of the features of the controller easier to access at the expense of programmability. We got our sample in...
  10. dirtdad

    Going Electric Hub Motor Kit

    We are evaluating a new player in the geared hub motor segment - Going Electric. They have been supplying us with torque arms and other components for a long time now; their stuff has always been great quality. Now they are offering a complete geared electric hub motor kit. The motor shares the...
  11. dirtdad

    1000W BMC testing

    The new 1000W BMC hub motor (V3) has proven to have a lot of potential that we (BMC and retailers) cannot figure out how to unleash...yet anyway. We have tested with the Crystalyte 20 and 40A controllers with disappointing results. Speeds in the low 20s even at 72V, and controllers that heat...
  12. dirtdad

    List of recharge station/EV friendly businesses

    Does anyone know of a list/website of public places or businesses that officially allow ebike/EV recharging? They are surprisingly hard to find. If there is not, I think we should start a list. If there is such a list I would like to add to it. Either way, here is my list. These are places...
  13. dirtdad

    Does number of windings affect power consumption

    Electric motors with more windings make a motor with more "torque" and lower top speed, as I understand it. i.e. a Crystalyte 5305 has more windings and a 5304. The 5305 has more torque and a lower top speed. Mechanically, a vehicle set up for higher torque through gearing consumes more...
  14. dirtdad

    Yesa battery real world test - by this forum

    Hi all I have been selling Yesa batteries for a while now. They now make high discharge packs with 5C sustained / 8C burst rates. They make them in 10AH - 30AH, so the 30AH can do bursts of 240A, for example. These should be good for eTek applications, electric motorcycles or cars, or even...
  15. dirtdad

    Pulled over by the police today

    So there I was, leaving Starbucks in a busy downtown area on my eBike. I made a left turn onto a busy street where it is marked no left turn. I heard the siren, saw the cop in my rear view mirror and pulled over. The cop asked for my drivers license, registration and insurance. I was almost...
  16. dirtdad

    18 Mosfet Infineon Controller

    Just got in a load of Infineons, see a sample of them below. 72V 65A 18 4310 Mostfets top. The middle houses either the 72V 45A or 48V 30A, and the cute little bug at the bottom is a 36V 20A model: I had them all made with CA direct connect plugs and with a pile of mating shielded pins. I...
  17. dirtdad

    BMC 600W vs Crystalyte 5304 @72V

    I had the chance to run the new BMC 600W hub motor back to back with my 5304 Crystalyte at 72V. Here are the particulars of the setup: 72V 20AH of Yesa Lifepo4 batteries and an Infineon 72V 45A controller that will work with either motor. My bike is a no pedal vehicle. The only thing that...
  18. dirtdad

    Electric motors are immune to altitude, so?

    One advantage electric motors have over ICEs is they are immune to high altitudes. Many cars become quite anemic at high altitudes due to the thinner atmosphere, so the engine puts out less power. People who live in Denver can vouch for the effect, it can be significant. ICEs that include...
  19. dirtdad

    Infineon test report / Cook's Corner trip again!

    A lot of things came together this weekend. My Infineon 72V 45A controller arrived. Labor Day arrived. Good weather arrived - not really saying much here in So Cal, but still... A quick neighborhood test of the Infineon controller went well. It moves my chain free eChopper along at 42mph...
  20. dirtdad

    Orange County Cook's Corner Ride Report

    Yesterday was a fabulous ride, I must post a ride report. Sorry, no pics. I promise from now on I will take the camera. Locals will appreciate the details of the locations nonetheless. I left San Clemente at about 8:00 bound for Cook's Corner. Cook's is a local motorcycle hangout/roadhouse...
  21. dirtdad

    DC-DC or 12V battery?

    I am looking for advice on running 12V accessories on my eMoped. It is configured with 72V of lifpo4 goodness. I am thinking of getting a dc-dc converter or just using a small 12V separate battery. Many headlights come with a nice external battery and charger, I could just wire everything...
  22. dirtdad

    90 miles range in a day, no pedaling (144km)

    I took my pedal free eChopper out for another big ride again yesterday testing for range. This time I stopped for some opportunity charges along the way. By doing so I got a 90 mile range. And that was with less than optimal opportunity charging. The bike is configured with 2 36V 20AH packs...
  23. dirtdad

    Batteries in series interaction?

    I am wondering how two battery packs wired in series might "interact" with each other. Here are the details of my situation and why I ask: I have 2 36V 20AH packs w/BMS protection. Last week I discharged them separately and completely. When the BMS kicked in, it would shut down the pack...
  24. dirtdad

    Equating ebikes to MPG

    Using the price of gas vs. the price of electricity, you can kind of equate eBike recharging costs to MPG. I am using some average values, feel free to tweak as you see fit. I can't see where this has been done in some other thread, point me there if I missed it. 4 cents to recharge seems...
  25. dirtdad

    Kill switch wiring

    I can see that a contactor is the good way to make a handlebar mounted kill switch on an eBike. But I am considering some less complex alternatives. But they must have some trade off, or everyone would avoid the cost and complexity of a contactor. This is a brushless hub motor bike. So...
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