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  1. RIPPERTON

    RIPPY SCOOT

    Then did a big range test run and got 280km out of 1 charge. 6 hours of run time. I set the Kelly minimum battery voltage to 125 but I have never used this function so didnt know how it would act. I got down to about 130v and the throttle started to have no response and thought crap ive blown...
  2. RIPPERTON

    RIPPY SCOOT

    The motor came with steel axle locks which no matter how tight the nuts are will always move back and forth going from power to regen. So CNCd up some 16mm alloy axle clamps. And stuck a thermometer sticker on.
  3. RIPPERTON

    RIPPY SCOOT

    Got the new QS 12kW hub motor at 11kv makes about 2000rpm at 175v. Resisted the temptation to take the motor apart and modify it with cooling holes but did drill and tap an M8 hole out near the rim to inject Ferro Fluid. This hub motor is pretty good and doesnt get over 65C at least in winter.
  4. RIPPERTON

    RIPPY SCOOT

    Wonder what could have broken the stator laminations. I think a small rock got in through a vent hole. Ferro Fluid is still there as brown liquid stuff in the stator grooves.
  5. RIPPERTON

    RIPPY SCOOT

    So no replacement ctlr from Kelly. I decided to use one the 600A KHB,s from the R1 race bike. It had 2 of them siamesed together in one housing with copper heat sinks. Just had to separate them and modify the housings. That all worked out and it ran great.....for a while, then the hub motor...
  6. RIPPERTON

    Kelly KLS 72601-8080I

    When you hover over that setting it gives you the limits that went from 0 to 1000 so it shouldnt blow up if you set it to anything within that range which is why I call it a booby trap. Im avoiding Kelly for now as a friends Beetle project also smoked its Kelly during config for no apparent...
  7. RIPPERTON

    RIPPY SCOOT

    Deal Breaker alert !! Despite the Golden Motor chatbot telling me twice that this controller has variable regen control... it actually doesnt. I always use a 0-5v pressure transducer mounted in a hydraulic master cylinder on the handlebars to control regen full time all the time. Its my standard...
  8. RIPPERTON

    Kelly KLS 72601-8080I

    See this "Motor Nominal Current" which I set to 1000. Dont set it to 1000, leave it as it is I think its 80 something .
  9. RIPPERTON

    RIPPY SCOOT

    So I swapped my electric kart for a new Kelly controller...... :shock: I know right. But it blew up before it ever turned a wheel as the config program had a booby trap in it. Kelly wont replace it under warranty. Giving Kelly a big miss from now on. So what do you guys think of Golden Motor...
  10. RIPPERTON

    RIPPY SCOOT

    First range test run proves promising. Should make it to 300km on a charge. Nickel Manganese Cobalt manufacturer says bottom of charge should be 2.75 volts but I wouldnt have the balls to go that low.
  11. RIPPERTON

    RIPPY SCOOT

    Drillin holes ! Tangial holes go into the outer and inner periphery of the hub flange plates. Then using a technique from windscreen installers I run a tall bead of silicon diagonally down the face of the plate to act as a fan blade. Major difference in running temperature. Also used the ferro...
  12. RIPPERTON

    RIPPY SCOOT

    Went for a 20km ride today and the scoot performs well. The motor is wound tall and doesnt get off the mark very quickly but at around 60kmh any throttle shows this scoot has plenty of legs. At 2 and a half times the original battery voltage and more than double the ctlr current the motor gets...
  13. RIPPERTON

    RIPPY SCOOT

    After bothering to invent a new way to Pre Charge Boot the scooter with momentary buttons, one to the precharge both the ctlr caps through a resistor and power up the DC-DC 12v supply which energises the main contactor after 10 seconds and another one to disconnect the DC-DC 12v to shut the...
  14. RIPPERTON

    RIPPY SCOOT

    Thanks Dui. Im having problems with the controller, its not powerful enough or is going to blow up soon. I have 2 300 amp versions of this and will try one of them. Ultimately it should have a sinusoidal unit so if anyone knows of a good ctlr other than Kelly 175v 300A let me know
  15. RIPPERTON

    RIPPY SCOOT

    First run. Motor seems to be wound tall ie low turn count in the coils. Doesnt take off very fast from standstill but accelerated well from 40kmh onwards. https://studio.youtube.com/video/SaWz11n4E_M/edit
  16. RIPPERTON

    RIPPY SCOOT

    Original phase cables wernt long enough to reach ctlr so 3 short cables down to the originals which are awfully skinny lookin. And an acetal insulator box clamp standoff thingy with 4 M4 screws whipped up in 40 minutes.
  17. RIPPERTON

    RIPPY SCOOT

    Both packs in and charging with the old R1 Elcon charger at 22A.
  18. RIPPERTON

    RIPPY SCOOT

    Batrium BMS system is up and running....on the kitchen table. All cells are either 3.74v or 3.75v factory shipping voltage. The BMS system is re used virtually as is from the race bike last run in 2017.
  19. RIPPERTON

    RIPPY SCOOT

    Rear pack is built. Will check airgap under the bottom cell in a few days. Will also bench test BMS system before final install.
  20. RIPPERTON

    RIPPY SCOOT

    24 Batrium Longmons wont fit lying flat so have to rack them standing up. They are 2.5mm thick so have to jog the toolpath for the 3mm end mill so the acetal frame grips them a bit.
  21. RIPPERTON

    RIPPY SCOOT

    Found these M4 lugs that will fit under the acetal cover and run 10A wire out.
  22. RIPPERTON

    RIPPY SCOOT

    Got this 120mm radiator off EBay. Like folding the other radiator in half. $24 The rear pack has cell number 21 in it. Thats half way through the whole pack and where I want to attach 2 small cables for the 87v kart chargers. These are small chargers that I can pack into the helmet bin for...
  23. RIPPERTON

    RIPPY SCOOT

    Rear pack is 24s 2p 37kg. Wooden frame to make sure all bolts can line up. Also helps when tightening so the tabs dont get tweaked
  24. RIPPERTON

    RIPPY SCOOT

    Front pack is in, tight fit. Each cell block is mostly supported by its tabs as they are quite stiff. There a small gap designed between each block but there will be a bit of sag. Important is the bottom block does not support the weight of the whole pack.
  25. RIPPERTON

    RIPPY SCOOT

    3 different tool paths for the end frame. 6mm Bull Nose for the internal corners. 6mm End Mill for the area clearance and blind holes 4mm End Mill for the small holes and outside.
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