Earthwing NLS with the crush weld. its only 4 plys thick
2x torqueboards bldc esc
Bad build do not replicate. It rides just fine from 0-25mph. On 12s with 190kv I seem to hit a wall where escs reach duty cycle around 27mph. Lame af, I want to go faster. Next set of upgrades will be new, lower kv motors (~170) and vescs that can handle higher erpm. My enclosure is a 3dp box that is tied onto the board with some dyneema - no additional hole drilled into the deck
actually i wouldnāt have said it when i first got on the board. it was basically more than i could handle. I thinkā¦ think i could go a little harder now having had practice.
Out of curiosity, does the SRB setup ever have the torque drop off, like when you hit a battery current limit in VESC? Or is it full torque all the way to redline?
The mamba can only report battery current AFAIK, so itās harder to figure out the low end torque as a benchmark
2wd
190kv apex/flipsky
12s6p p42
44:9
200m
105a battery
120a motor (imo not enough but is what vesc mk3/4 can take)
iron giant still needs a battery and some mechanical work before can be riden
the SRB setup attempts to have enough battery current to have full torque all the way to full speed.
and it feels like it.
thereās less motor current limiting too. we arenāt using the torque limiting. we do use punch control. actual motor limits. but you can think of it as youāre on full battery current from low speed on up. so it doesnāt quite have that motor current max at low speeeds cutover to battery current limited at higher speeds that vesc does. probably harder on motors.
Torque: 5/10. Rather weaksauce because of Battery limitations, stupid gearing, belts,Hoyt Pucks weird decision for the weak built in throttle curve and me not really needing torque.
Total kilometers 2k+
22km/h~
6374 FS BH
Prototype SabreDynamics Beltdrive
Aliexpress tires
Trampa deck 17ply with bindings and SabreDynamics Wings
v6 Neobox 2x
Wouldāve been sold a long time ago if it wasnāt for the community.
Alright, if SRB has a flat torque curve and the max motor current is the same as the 225A max battery current you posted before, the peak performance looks like this vs my bikeboard:
(I took your calculator and rescaled it to Newtons of thrust, and added standing/tucked rider air resistance for reference)
Iād like to see how other builds look like graphically, the numbers are a bit much to digest lol
Wow! Iām really holding back my DV6 pro. Iām only running mine at 115a per motor. Guess I should turn it up. Although, not sure how much the flipsky motors will like those amps
This is how I killed two Flipsky āBattle hardenedā motors. They couldnāt handle 120 motor amps. Magnets slipped. Even after repair (heaps of epoxy) I caused one to catch fire haha.
qty motors: 2
motor kv: 170
gear ratio: 5.2:1
wheel diameter: 200mm
battery configuration: 12s10p Tesla 21700
battery current max: 40A (per motor)
motor current max: 120A (per motor)
Subjectively, this buildās torque on a 1-10 scale: 7
Total miles esk8ed: thousands
average cruising speed: 25mph
motor size and brand: 6384 Flipsky BH
drivetrain type/brand: @Boardnamics M1-AT on Hypertrucks
wheel type: Kenda K909 8" tire / @Boardnamics GT3 rims
deck info: Haero Bro 96, stiff, usually no bindings, sometimes front MBS F5 binding
esc type: Trampa VESC6 MK3
any other info about the build: Iām looking for way more torque, so Iāll be swapping to 5.5:1 gears and 205kv motors. Iām also considering building myself a 12s13p P42A pack to replace the Tesla cell pack. More range, more amps.
