Recent content by xfrankie

I have seen this exact behavior in my own diy battery. The reason was "weak" contacts between battery terminals and BMS-voltage-sense-wires. In a way it acted as a high resistance connection... With no current across the cell (positive or negative) the reading was fine. Fluctuating by a...

not sure about availabilty where you live, but i am looking (for my purposes) at this combined "mppt-charger + three-phase invertor" SOLAX THREE PHASE HYRBID - HIGH VOLTAGE Battery voltage range [V] 160-800 Max.continuous charge/discharge current [A] 25...

which requires complete rework of the hardware, splitting the battery and making new connections between new parallel groups, new bms to handle fewer S groups, new twice as thick wiring harness, new controller to handle less voltage and more amps... i get the feeling that this is exactly what...

Options are many, but depend on how much battery you wish to add, and how awful-looking bike you are willing to accept. seatpost rack...

Well im glad i googled that before replying, at first i thought you really disliked my choice of welding method hahaha. Nice to see im not the first one to think of this solution. @stan.distortion Thanks for bringing this to my attention. Feeding high voltage across a spark gap of RLC...

Wall of text ahead, please bear with me as i explain. I am very much a noob with welding, and i have an old transformer stick welder with bad characteristics. Electrode sticks down rather than igniting the arc. Very difficult to start. Low-ish current welding is essentialy impossible. But once...

Low-viscosity dimethicone. Chemically non-reactive, non-toxic, easily accesible, good flow and heat characteristics... I run my own MXUS 3K filled (to 1/3) with this thing. "Silicone oils are primarily used as lubricants, thermic fluid oils or hydraulic fluids. They are excellent electrical...

I offer my understanding of the matter: If you have the same piece of wire (ie same resistance), you cannot pass twice the voltage at the same amps . Increasing the volts will increase the flowing amps. If you want to keep the amps the same while increasing the source voltage, you have to...

Going just by numbers, if I get ~40 amps to battery at 70km/h, assuming constant phase amps, it would mean about 20amps at 35km/h . In a linear relationship you have half the speed, you get half the amps to the battery (minus losses in the sysem). As noted by other people in this thread, you...

If it helps anyone in any way, with Sabvoton controller the regen power depends on your actual speed. I have my regen set to 200 Phase amps.... At 60-70 kmph this means about 3000W regen (40 battery amps, give or take, at 72V) At near stop (eg stopping at red lights) the regen force is nearly...

1) The programming cable is IMO 100% needed. Here they sell it on its own for 5 bucks+shipping. Definitely worth a shot before buying a whole new controller. You have to have a way to make the ESC perform its "auto-hall-test", whether with the PC cable or bluetooth dongle doesnt matter...

"Slide recharge " as it is called in the app works as a motor braking in petrol cars. You let go of throttle and the motor slows you down. Once set up, it can not be controlled wrt how strong the brake force is. Anytime you release throttle the same force slows you down... without touching...

"T" for "thread-side" relates to the axle, not the whole motor. The cable hole in the axle is in the threaded part, not the flat part which you push into dropouts. It is so that the cable exits inbetween two halves of pinch-dropouts, without being squeezed by them. Look where the cable exits...

Yes, that is correct. quote from the seller's site: http://www.cnqsmotor.com/en/article_read/Sabvoton%20SVMC/SSC%20Series%20Brushless%20Sinusoidal%20Programable%20Motor%20Controller/537.html "2.1. H-brake： If the purple wire connect to 12V，the controller enter brake status， when it disconnect...

Hello, if I remember correctly, the difference is this: 1) BrakeLow - connect to 0 Volt (battery negative) to engage. This does not produce braking from the motor, only disconnects the power (stops further acceleration) 2)BrakeHigh - connect to +12 Volt (or Battery positive? Not sure) to...