Endless Sphere

This is very interesting. Is it possible for you to post in english?

It would work exceptionally well with two motors in a 2WD ebike. That being said, when you accelerate, most if the vehicle weight shifts to the rear tire, so...

A more balanced system might put a 1000W controller and motor in the front, and a 1500W system on the rear tire...

The two common Al alloys are 6061 and 7075 6061 is easy to TIG weld, 7075 is stronger, similar to soft steel. No aluminum is easy to machine, but 6061 is "easier" than 7075. If you plan to drill and bolt (possibly bond with DP-420 epoxy), 7075 is stronger. Soft metals like brass and alumin...

If you don't mind me asking, I think these modules might be popular for other builds. Would you please post the precise external dimensions of a brick? And how many cells per brick?

Did they appear to be able to be broken down into smaller pieces?

It's best to charge lithium cells to 4.0V-4.1V, but its widely accepted that 4.2V per cell is the max.

4.2V x 13S = 54.6V as the absolute max voltage that pack should be charged to.

"...also haven't looked into settings yet..."

Change the max amps setting to something higher. Theres a chance that might have an effect.

https://www.youtube.com/watch?v=VsZQn2F4POU

https://www.facebook.com/photo?fbid=3980176128706403&set=pcb.2143146489156044 Peter Kovacs on Facebook (electric motorcycle builds) KTM 2016 EXC250 Motor, ME1507 Controller, ASI BAC8000 Battery, 20S / 22P Sony VTC5a, 72V https://scontent.fmci1-4.fna.fbcdn.net/v/t1.6435-9/p960x960/173227608_1015...

Looks like these are near the region of China that is like the Cajuns in rural Louisiana, they take pride in eating exotic meats that they catch...

One of the things I learned from the aero-Civic site was that the front grille creates significant drag. He covered the grille and found that the electric fan drew in enough air from below the engine to keep the engine temps safe. He installed movable louvers where the grill was, so he could manuall...

The most aero high-speed velo's look like a raindrop with flattened sides, and it used cameras feeding a series of internal screens (*old smart-phones?) If passenger mirror deletion interests you, I'd reccomend a backup camera and right-side camera. They have gotten very cheap, and somebody's obsole...

Brushed motors have been over-volted about 50% without problems in the past. However, the higher the volts, the farther a spark can jump. Doubling the voltage throws off the timing. That means the phases are energized just a hair too soon and they stay energized just a hair too late. I suppose you c...

$28,000, and if you want one there's a $2500 reservation fee.

If you plan to actually haul cargo in that large cargo box, you would definitely be better served by a mid drive motor, so the motor has some gears to work with. The smallest I would use would be the 48V BBS02, and if you think you wouldn't get into trouble, a slightly larger 48V BBSHD would be idea...

If you add a temp sensor to the stator on the inside of the motor, you can run a surprising amount of watts through it, as long as it's only a temporary peak. The amps cause the majority of heat in a motor, and the motor you have can likely be run with 48V. That would give you slightly more power wi...

I don't know if it's a good idea or a bad one. For hill climbing, put on the smallest chainring that will fit on your selected drive unit. The fact you want to convert a belt drive complicates things. The TDSZ2 will climb very steep hills, but because it has less power than the other two you mention...

https://mynobe.com/ The founder is from Estonia, which gained independence from Russia in 1991. Its an AWD vehicle using 3 hubmotors. It has a charger that takes 120V AC, and the suitcase sized battery is removable so it can be charged indoors, for those owners who dont have a garage. They claim 17...

I assume you are talking about using tubeless tires on a hubmotor. If yes, the edge sealant will not hurt heat in the motor.

The cells in the center of the pack will run hotter than the cells at the edge, which can passively shed "some" heat. This means the cells that are not on the edge will degrade sooner, and the pack will have reduced capacity when those cell degrade. As a general rule, I am not a fan of hot...

You need a chain guide. Mountain bikers take big jumps and the chain bounces a lot. There are many choices and models available....

If you confine yourself to radial-flux in-runners, like the popular Leaf 35mm, MXUS 45mm, and QS 50mm wide stator examples, I agree that swept face area is a good indicator of power potential, if all other factors are the same. (These three examples use the same 205mm diameter lamination stacks) The...

The entire swept face of the rotor and stator of an axial-flux can be working magnets plus electro-magnet material, but the motor mass near the center has trouble shedding heat. If width isn't a problem, you can stack more stators and rotors on the same shaft. Zero motorcycles started out with Moten...

For a few years, one manufacturer called 14S lithium-Ion battery packs 50V. After the Bafang mid drives began growing in popularity, they were often used with 14S, and many began labeling the packs 52V. EGO-brand lawn tools call 14S 56V, and I think Echo calls them 58V. So which is it, and what char...