Recent content by RIPPERTON

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...

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.

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.

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.

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...

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...

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...

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 .

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...

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.

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...

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...

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...

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

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