Your Watthours per mile is 22 Wh/mile.
That was a mixed chilled ride with some full throttle runs but also carving rides. When i go hard i can go up till 12 Wh a km. But most of the time i stay below 10 Wh. Like to carve between 30 and 35 km/h. The values you see there are also summarized for the 2 vescs (Dual).
Build Type: DIY Battery Size: 600Wh - 700Wh, 12S8P, Li-ion, mixed broken laptop cells with 2600 mah and 2200 mah Drivetrain: Flywheel clones 97mm, Belt, Dual, Enertion 6355 R-SPEC 190kv, 14:36 Regen Braking: Y Average Payload: 156lbs + 16lbs = 172lbs Range: around 35 - 40 miles Comments: Flat ground till middle hills most of the time
4 Likes
Build Type: DIY/Evolve Battery Size: (756Wh, 10S6P, 3500mAh Sanyo Li-ion), Drivetrain: 8" MBS Pneumatic Wheels (40psi), Belt, Single, ~140KV, 13:72 (modified from 15T to 13T) VESC: (N) Regen Braking: (Y), Average Payload: (200lbs) Range: (22 Miles before power cut, 25 Miles before complete shutdown. Cutoff voltage 33.7V. 30 Wh/mile.
Going to increase psi to 55psi next time and I am hoping to break 30-32 miles.
2 Likes
@Eboostin Just a tipp. You could set your cutoff voltage to 2.8V (28V) or at least 3.0V (30V) for li-ion cells. Under load they are completely empty at 2.5V. Becasue at a cutoff level of 3.37V (33,7V) you use roughly only half the capacity of the cell under mid load. So you would gain a couple of miles.
Thanks for the tip, that is how I have my DIY boards set with a BMS cutoff at 2.9V. VESC cut off is 3.1v.
Unfortunately, the Evolve ESC is what controls the voltage cutoff and I am not aware of anyone that has been able to modify it.
Build Type: (DIY - TB’s Semi complete dual Battery Size: 185Wh, 10s1p LiPo (Nanotech 5s 5000mah 65-130c) Drivetrain: 83mm flywheel clones, Belt, Dual, TB’s 6355 230kv, 16/36), VESC: (Y/N) No TB’s 12s Esc Regen Braking: (Y/N), No Average Payload: 220lbs/95kg Range: 16kms/10miles - 11.56Wh/km or 18.5Wh/mile), Comments: Top speed it way too fast. There are a few hills in my area not many. Just mild inclines. This setup eats anything around me. The battery capability probably helps a lot. The batteries aren’t even warm at the end. Motor and esc are just warm.
Build Type: DIY Battery Size: 4500mah Lipo 12s Drivetrain: 90mm flywheel clones, single belt drive TB’s 6355 190kv 16/36 VESC: Y Regen Braking: Y Average Payload: 200lbs Range: 4 miles.
Cutoff Starts at 3.7 and ends at 3.5 Plenty of speed but range is not as expected based on http://esk8.today/2016/12/28/how-far-can-i-ride/#rc
What am I doing wrong ?
4500mah is quite low for 12s. Li-ion or Lipo?
Lipo. The calculator says I should get around 10 miles. Is the calculator unrealistic?
12s1p? to make it 4500mah?
Says you should get about 9 miles…
I would say you dont charge your batteries till max… or something else is wrong… cutoff for battery does not seem to be that low. so hard to speculate.
~4 ah at 44.4v nominal = 167.6 wh Should be around 17km Or 10 miles i think
Build Type: DIY **Battery Size:**189Wh 9S1P 5000mah, LiPo Drivetrain: 83mm, Belt, single, Turnigy SK3 6374 192Kv, 16:36 VESC: Y Regen Braking: Y, Average Payload: 120kg Range: 17km, 11Wh/km
Comments: pretty flat here as well. usualy start the board by giving it a kick first. even though my baord can do +40km/h i barely drive faster then 25km/h. not much breaking and accelerating envolved here since my default route is far away from traffic.
Build Type: DIY Battery Size: 8s4p li-ion 80A 12000mah Drivetrain: 110mm x 25mm scooter wheels, single motor Turnigy SK3 5063 236Kv, chain drive VESC: Y Regen Braking: Y, Average Payload: 95kg Range: 16-17 miles
Comments: Haven’t drained the battery from 100 - 0% in one ride yet but have recorded all my rides and worked out my milage from the records and battery %s.
I use an imax b6 (legit, not a clone) to charge each cell to 4.2.
Any pointers on where to start looking for what could be wrong?
Build Type: DIY Battery Size: 10s (2x 5000mah in series), LiPo Drivetrain: 83mm, 16/36 belt drive single SK3 192kv VESC: Yes, 4.12, running FOC (diyelectricskateboard) Regen Braking: Y Average Payload: 67kg Range: shredding about 14km, normal cruising 16+km Average wh/km: 10.5 Average riding speed: 18.4 km/h Top riding speed: 47 km/h
Comments: Riding in the Netherlands… cannot really be more flat. @JuniorPotato93 could you add something like ‘specify which ESC you’re running and in which mode (VESC/FOXBOX/VESC6)’. So people can see how everyone is doing on BLDC/FOC in combination with a certain battery setup?!
And I only get 4. I am stumped.
Which LiPo is it and what is the C rating?
Rolling resistance?
@Yecrtz Turnigy nano-tech 4500mah 6S 25~50C Lipo Pack
Unless there is glaring issue with the battery I’m leaning towards rolling resistance. When I crank down on the wheel nuts the wheels do not spin very freely despite having spacers installed. Not sure why that would be since they spin quite well if I hold the bearing b/w my finger and spin the wheel by hand.
No one posting stats on total weight. Not a very good survey if trying to find a range. This is one of the most critical factors.