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  1. DonCox

    2010 CRF250 with V3

    How long did it take to bring the battery back to full charge with your 2 charger system. And how big is your generator?
  2. DonCox

    2023 Honda CRF250R with QS138 70H V3 Motor and EM260S Controller

    Your conversion looks really good. The battery is such a difficult part of every build. Also since every build seems to be in a different frame. Im looking at the battery you used, as a solution, they build a great battery. Fusible links, the right cells and quantity, they disable discharge BMS...
  3. DonCox

    2023 Honda CRF250R with QS138 70H V3 Motor and EM260S Controller

    I usually mount the motor with 3 points, the swing arm bolt, and the 2 sets of mounts at the bottom of the motor. So I just ran the mount to the front since the middle bottom bolts only go to the plate. These little motors put out some really awesome torque. I would rather be on the side of...
  4. DonCox

    2023 Honda CRF250R with QS138 70H V3 Motor and EM260S Controller

    https://www.instagram.com/reel/CxI6ZkppduN/?igshid=MzRlODBiNWFlZA== 3 monthes ago I was riding at Cahuilla Creek Mx track on Bob Casper's Honda Ebike 2010 250 CRF with the same motor /Controller on it. I came in and Bob was talking to Brock. Brock wanted his son to try this ebike and Bob was...
  5. DonCox

    KX100 Electric Pit Bike

    I have 2 frames KX85 2003, partial roller and a roller. Both frames have been modified to accept the QS138 70H V3 motor and the EM150 controller. 1.)The one has frame, rear suspension and shock and rear wheel. $400 + shipping no title IMG4277,4278,4279 2.)The other has small wheel front...
  6. DonCox

    KX100 Electric Pit Bike

    Just the outer shell and do these few mods to it. A little plastic welding...
  7. DonCox

    Is this a good generator? A-iPower GXS7100iRD 7100W Dual Fuel Inverter

    Here is a sound test and load test of this generator. Costco had this generator last year, and sold them all. now they have them back. That is a good price. . Sound is actually good on this, pretty comparable to all quiet type generators. It only reaches 71db at close to full load. the...
  8. DonCox

    Battery construction 5,8kwh 72V

    No I haven't seen any aftermarket battery system. Unfortunately the easiest way would to replace the battery and controller. But there are very few 350V controllers. I could reload an Alta battery, but not real sure if I could get the wire bond type connection with solder and wire. There are...
  9. DonCox

    YZ250F 2014 Build With QS 138 70H V3 Motor and 450A controller Part #1 and Part #2

    I have 2 x 10A 120V chargers, since I have split my battery into 2 packs, and charge them both at the same time. 120V is available some tracks, but I have a 3500W inverter generator that can run 2 15A chargers. That brings the battery back to 80-90% in 45 minutes from about 50%. 15A charger is...
  10. DonCox

    YZ250F 2014 Build With QS 138 70H V3 Motor and 450A controller Part #1 and Part #2

    So I turned 78 last month. All is well. The YZ250F 2014 Electric is about 6 months old and it has 300-400 moto laps on it, ridden most by a older rider, but it has been near flawless. The battery packs have given me a few problems, but this is their second career on this bike. They have...
  11. DonCox

    2001 RM with QS138 70H V3 motor and Votol EM200 Controller at an Enduro

    Yes, it is for a EM260SP The Controller always says EM-100. Just lower the Bus Bar Current on the first page, and your current limiting max for Sport Mode on Pg 2. 200A or try 250A . I think it can push that much. The EM150 pushes 200A.
  12. DonCox

    2001 RM with QS138 70H V3 motor and Votol EM200 Controller at an Enduro

    Here are video.s of my YZ with and without Flux Weaking. the One that says Sport mode, the Battery was in the mid 70"s Volts, but you can hear the motor spool up higher. The One with the 2 of us, the CRF and YZ , I was in Mode 2 (66% of sport mode Amps,) but no flux weaking, it doesn't reach...
  13. DonCox

    video title: World's First Harescramble Win on Electric Dirt Bike

    This was Sportsman 2 class.
  14. DonCox

    video title: World's First Harescramble Win on Electric Dirt Bike

    I don't know if they had a quick change battery on the gopro. I'll check with Mark.
  15. DonCox

    video title: World's First Harescramble Win on Electric Dirt Bike

    I think Mark at XEMX1 is really on to something with this quick change battery system. XEMX1.com has more information. Ask him questions on that site.
  16. DonCox

    Newbie need advice on a generator

    The Ebay store that carries the $999 generator, is going to have the smaller 5500W generator for sale at a much better price in 4-5 weeks. This a company in the US. MaXpeedingRods | eBay Stores
  17. DonCox

    Sur Ron Ultra Bee

    That is why many of us are going to a solid dirt bike and mod-ing them to Electric. The QS Motor , and ME motors on YX250F frames, the QS motor on CRF frames, the QS motor on RM frames. the QS motor on KX100 frames. All of these have known ride quality, and tons of aftermarket good stuff...
  18. DonCox

    Newbie need advice on a generator

    Unfortunately you are right on the Lighter weight model. Shipping is stupidly priced. The heavier one is sold from an Ebay store in So.Cal with free shipping. I bought a 3500Watt gen from them. It was a good experience. Here are reviews of the generators. The lightweight 240VAC MXR6250...
  19. DonCox

    Newbie need advice on a generator

    I have my order in for the Stark also, and I will be needing a 240V power source to charge it at the track. Here is a Inverter Generator that puts out 21 Amps at 240V, and only weighs 86lbs. I bought one of there other generators, the MXR3500, only 120VAC, and it has worked out really well for...
  20. DonCox

    General Varg Beater

    We built a 2017 KTM 150SX into an electric with the QS motor. It has a 4.8KW battery. It is 245lbs. It has twice the battery that the RM250 had in the Hare Scramble above. The RM did the 12 mile lap and had about a half a lap left in it on the 2.4KW battery ( approximation, since it was...
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