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+---- Thread: So it begins...... Battery spot welder (/thread-4548.html)
RE: So it begins...... Battery spot welder - sternwake - 10-24-2023
RE: So it begins...... Battery spot welder - sternwake - 10-26-2023
I did a loop around the block on a full battery. .
.65 miles or so,
some very rough sections of roads. eyeball rattlers.
It slows way way down on such surfaces.
Voltage was 27.56 on my return, and i did a few loops in drivewY trying to read the wattmeter between my feet. V was fallling to 25.xx under full throttle, bouncing back up to 27.5v with load removed.
So the 29.4v Eskate power supply/charger today decided no load 29.83OCV was acceptable.
I used my CCCV xl4015 bucker to limit this to 29.39v, and allowed 1 amp to flow..
A while later, I came back to a green light onnpower auppky. 29.39v and 0.08amps flowing into battery.
Disconnect baTtery from bucker and bucker from power aupply.
Battery voltage dropped to 19.36v after a few minutes.
for grins i hook up 29.83v power suppky to 29.36v battery, and 1.43 amps flow amd battery voltage is 29.65v
ImmediTely disconnect and tKea a few seconds for battery voltage to fall to 29.4.
So it seems the power supply would significantly overcharge all of the 7 cells within the pack.
Also,.once the green light comes on, it is still feeding some current into the already overcharged battery..
I wonder how many hudgey e bike/scooters, skTes do the same thing.
Surprised one does not read of more E transpotlrt battery fires.
The kayak trolley showed up. I tried towing it with the e skate on the rough surfaces, and it struggled. The trolley wheel hubs is basicalky plastic on steel.bearing surfaces.
I had no lube on this, and it was warm after about 50 yardsat maybee 6mph.
Not lookng too good, towing a sheepdog laden Kayak with this underpowered eskate on rough surfaces, but they are supposed to be resurfaced soon.
Lubed wheel hubs on the trolley will have to happen too. It clIaims 250lb weight Crrying capacity. kayak weights about 50, same as Fiona.
whike the short wires from battery to speed controller are 16awg, the 3 power wires going to 3 phase motor from ESC, are much thinner, and much longer. they must be dropping tons of Voltage, especially after a few minutes at full throttle.
I can still push to assist the underpowered ESkate too. It might not be so bad on a smoother surface, which starts about 120 yards away.
the motor seems to have the most torque in the 6 to 8 mph raNge, so perhOs once i get to smoother roads and some inertia going it will be OK.
But, mopowermobettah. Might be able to get it with thicker copper between battery and motor
RE: So it begins...... Battery spot welder - GotSmart - 10-27-2023
After a long day of driving and doctors I stopped to have a beer. Damn if I understood almost everything.
RE: So it begins...... Battery spot welder - sternwake - 10-27-2023
so the impatient.. dont care to repair typoes, are beneficial?
Ask and ye shall receive.
So it begins...... Battery spot welder - Scott7022 - 10-28-2023
The nephew has six ebikes three from one company two from another and a third monster fat tire specialty bike. He was charging them all for a trip after i told him to only charge them before going on trip and leave them at fifty percent sitting.
Only the expensive fat tire bike charger shut off at rated voltage. This is a twin battery bike with a bms set able to roll 80/20
The other 2 twin battery units dont have bluetooth connectivity.
The three oldest bikes have already degraded to 75% or less of posted. But are four years old.
New procedure is charge them outside.
Sent from my iPhone using Tapatalk
RE: So it begins...... Battery spot welder - sternwake - 10-28-2023
I know charging an overdepleted lithium cell can be dangerous.
Overcharging lithium cells slightly to moderTely, to my limited knowledge, just reduces their cycle life.
Ive no doubt the provided Eskate charger will happily overcharge the pack
And whike i did not open the shrinkwrapped 7 cells, there is a small protuberence on the side of the pack. If that js the BMS, it looks smLler than the 3S 25amp BMS i instLled on my 12.6V battery, which has no balancing function.
RE: So it begins...... Battery spot welder - GotSmart - 10-29-2023
So should we be calling you Freewheeling Franklin?
Back in the day I had the entire collection that I bought from The Psychedelic Shop in SF.
Good times.
RE: So it begins...... Battery spot welder - sternwake - 10-29-2023
Got to be honest.
Someone older than me sent me a link with the Fabulous furry freak brothers.
Never heard of them before, and completely missed the reference to freewheeling franklin and am only slightly enlightened after a quick search.
I am eyeballing a dual hub motor skate , 700 watts.
Double the torque, should do it, as i dont think Golden spit and 3M polish on the 350 will.
Some used ones for half price. One seller, who claims very light use, has 67 other productos , most of which are slightly used helmets.
Be nice to think it was driven to church a few times by a sweetl old lady from Pasadena who thought it was just too fast and dangerous and missed the return window.
But it has a 7S 2P battery
RE: So it begins...... Battery spot welder - rvpopeye - 10-30-2023
Iif you hit a puddle fast enough I think you could actually surf ? LOL
I hope it hauls the ship and yer crew with ease ! Keep it under 90.
RE: So it begins...... Battery spot welder - sternwake - 10-30-2023
What about the plundered booty.?
Its gotta haul that too!!
Arrrrgh, ya sure you're a pirate mate?
I've resisted ordering anything more, so far.
I wanna see if a better brand name 28mph 11mile range 1200watt model would fit.
Pffft , 700 watts of motor....