Endless Sphere

Hi Guys, this is Rob Provost, the CEO of Prodeco Technologies. ...If you guys ever wanted, I could set up a Q & A chat session for an hour or so on a week night where anyone can ask me any question about Prodeco Technologies and I will answer them. There will be no topic banned and there is no ques...

This guys spliced in a 24volt battery in series to the 36volt battery that came with his Currie Izip Zuma to convert it from 36volt to a 60volt power source. He also swapped out the controller. The Izip lithium battery packs have 4 prong connection that is not registering any voltage with volt meter...

I was thinking that 3D printing with ABS plastic may be useful for fabricating custom cell holders. They could be built with space for mounting conducting metal that can also have tech to hold them together by pressure. they could also be designed with multiple vent holes which may be useful as disp...

microbrain wrote: http://www.ntsworks.com/New_Battery.html

Anyone found any pictures and/or video of this "Breakthrough Interconnection System"?

I wonder how many amp hours could get out a a ream of paper batteries..

This is a folding version of the Tartaruga, which is made in Japan. I think this would make an interesting platform for an electri hub motor system.. could even do a two wheel matching hub motor system because the wheels are the same size.

This is Tartaruga semi recumbent electric assist bicycle imported from Japan.

Modded 9C with modded 12 fet infineon and 18S lipo - 5kw peak. "Modded 9C with modded 12 fet infineon"?? I see infineon is probably the controller. what is modded 9C?? "18S lipo - 5kw peak"? 18 cell lithium (LiFePO4??) ? are you running any parallel cells? you using a BMS? I presume 18 cells at 4.1...

yup, each hall has three legs, an input ( positive 5v approx) an earth ( negative) and an output, since each hall has the same input and earth, they can all be connected, they are basically just powering the hall sensors. The output on each sensor is a signal that basically switches on/off as the m...

You can have "2 speed" regen of sorts using throttle off regen, which gives you light braking when you let go of the throttle and it then brakes even harder when you activate the brake switch. I've noticed the throttle off regen cuts out sooner than the regen button though, so it'll pull you up unt...

All About Circuits, Brushless DC motor Electric Motors and Generators It sure is a cool animation . The 5 wires coming form the Halls are Power, Ground, and one for each Sensor. On the animation page, the link to ResMed Motor Tech. leads to a ResMed that does something else. I don't get that part. ...

"Jeremy" and "whatever"... thanks guys! That is the kind of stuff I have been looking for.

(continuing to study how brushless motors work)

Yeah, that's the one I have. So far, of the couple videos I have seen of this tester being used, it have not shown what it looks like when testing a working controller or throttle. And the people using it seem to not be sure if it is working or that it is connected correctly. I am hoping I will see...

thanks for posting the video. I was thinking that a way to make them safer is to place the charger and battery on top of something fire prroof, like a a slab of ceramic tile..or on ceramic floor, like many people have in a bathroom or kitchen.. and perhaps someone can build a device that can disconn...

I will try and get a video of it . Please do post it. I would like to check it out. I would like to know which electric batteries have had this problem. From what I understand, calling a battery lithium is not enough information. And need to know more info about the details of cause of "burnt house...

Lock wrote:really, really excited, actually...

congratulations.

The problem has been that cylindrical cells are hard to electrically connect together. The traditional way to interconnect them is with welded nickel strips. The drawback to this is that the electrical resistance is high , the welds break easily and welding together thousands of cells is very cumbe...

flathill wrote:just need to gold plate the battery terminals and we should be all good

That is a brilliant idea! the gold could be re-cycle if needed. Perhaps could be DIY project.

Sinclair C5 (cost 399 british pounds).

They accuse me of cheating too!! But I was here way before them! I built the trails too. I built one technical trail 4 other guys. I built another trail along with the bike club we had a long time ago. And I made all the signs for each trailhead when I was 15 and all the signs are still there. Chea...

IThey had primer, ratty electrical tape.....just seriously ugly, and I figured that it was possibly attributed to three reasons: 1. They are core, and they value utility and nothing else. 2. They want to look core, because they want street cred. 3. They don't want their bikes ripped off, so they ug...

edamame wrote:The reverse function of my Losi Mini T is variable speed.

Does the remote use a hall effect sensor for the forward and another for the reverse? And then another hall effect senser on the car controller throttle forward and another hall effect sensor for reverse?

I think i am making progress in understanding the brushless motor technology. It seems that there are 6 steps that current flows through the wires untill it loops back and starts again through the 6 steps.

on this page there is a graphic of how the brushless 3 phase motor is moving electricity through an entire loop. It appears that there are 6 different states that it cycles through until it begins to cycle through them again. http://diandeng.myweb.hinet.net/index_motor_3phase_6step.htm I am not clea...