Search found 30 matches

by up0
Jun 01 2018 5:44am
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 191
Views: 21789

Re: Speedict neptune lite

Hello Speedict, Comparing the schema from the manual to the picture above: neptune15.png neptune15-real.jpg I have a question: In the schema Charging and Motor-Controller Wires are connected where they enter the Neptune. On the photo this is not the case. I assume they are connected on the inside, a...
by up0
Oct 04 2016 5:55am
Forum: EBike Non-hub Motor Drives
Topic: Ultimate BBSHD Grin Phase Runner FOC 3000W
Replies: 179
Views: 38764

Re: My BBSHD with External Controller 74V 3000W 45A

Hey, this is a nice idea! I have a 20S Battery pack on my bike with a hub motor and wanted to use the BBSHD on another bike with the same battery pack. This sounds like a nice alternative to splitting the battery! Can you share some info on which controller you are using and how you connected it to ...
by up0
Mar 15 2016 8:10am
Forum: Battery Technology
Topic: 48V , 5A LiFeP04 Charger Repair?
Replies: 11
Views: 1552

Re: 48V , 5A LiFeP04 Charger Repair?

Hi Monstarr, I am not sure it would help if I published the values of my charger, because they all seem to be SLIGHTLY different. I have used Google Picture Search on "Kingpan, Kingpin, PingBattery, etc...." and found many pictures that had a similar layout (final Voltage adjust in the bot...
by up0
Mar 14 2016 10:42am
Forum: Battery Technology
Topic: JP spot-welder, FET-switched, timed adj. pulse
Replies: 619
Views: 83834

Re: JP spot welder

Quokka wrote:Guys, does anyone have a alternative to riva's jp spot welder?
Did you see my post earlier in this thread: viewtopic.php?p=1160937#p1160937
I am not affiliated with this project in any way (Because someone already asked me if I sold that welder ;-) )

Cheers, Ulli
by up0
Mar 10 2016 6:41pm
Forum: Battery Technology
Topic: 18650 spot welding -how to- ULTIMATE REPOSITORY
Replies: 813
Views: 211118

Re: 18650 spot welding -how to- ULTIMATE REPOSITORY

> I also wonder if a good amount of hot glue surrounding the cells adds some thermal advantage or disadvantage. > On the other hand, it probably adds unwanted insulation to the cells , It really depends on if your finalized battery block will be allowing air to flow through it like this rare pack: h...
by up0
Mar 09 2016 5:28pm
Forum: Items for Sale - New
Topic: CHEAP NEW ORIGINAL 18650 BATTERY CELLS AND PACKS
Replies: 832
Views: 256730

Re: BRAND NEW CELLS 18650 SAMSUNG/SANYO/PANASONIC 3500mAh

> Well almost everywhere you see 18650 cells or Lipo or Lifepo4 you will see some reference to C value. Yes, of course I have seen those horrible "C" numbers and I do know what they mean. And everytime I wished, they would fire the marketing people that came up with this confusing term. T...
by up0
Mar 09 2016 4:22pm
Forum: Items for Sale - New
Topic: CHEAP NEW ORIGINAL 18650 BATTERY CELLS AND PACKS
Replies: 832
Views: 256730

Re: BRAND NEW CELLS 18650 SAMSUNG/SANYO/PANASONIC 3500mAh

Guys, please don't invent new and confusing terms for existing terms: " DISCHARGE " is a very misleading term for what is really " Current " (measured in Ampere)! > Voltage does not matter, its the discharge you need to pay close attention to, > Simple example using 3.3V nominal,...
by up0
Mar 09 2016 3:18pm
Forum: Items for Sale - New
Topic: CHEAP NEW ORIGINAL 18650 BATTERY CELLS AND PACKS
Replies: 832
Views: 256730

Re: BRAND NEW CELLS 18650 SAMSUNG/SANYO/PANASONIC 3500mAh

> wouldnt it go from 12 volts, to 24, then 36 ...etc? I was trying to stress the point that each battery only "LIFTS" the water by "12V". Of course the potential of the water is getting higher and higher (24,36...) But the individual battery doesn't care. You can also think of i...
by up0
Mar 09 2016 2:07pm
Forum: Items for Sale - New
Topic: CHEAP NEW ORIGINAL 18650 BATTERY CELLS AND PACKS
Replies: 832
Views: 256730

Re: BRAND NEW CELLS 18650 SAMSUNG/SANYO/PANASONIC 3500mAh

> wouldnt each cell in series add its voltage to the next so that the final cell would experience the high voltage? I looked for one of these "Water Analogy" pictures to illustrate, but couldn't find anything suitable. So I modified one I found on the web. New additions on the left of the ...
by up0
Mar 09 2016 5:52am
Forum: Items for Sale - New
Topic: CHEAP NEW ORIGINAL 18650 BATTERY CELLS AND PACKS
Replies: 832
Views: 256730

Re: BRAND NEW CELLS 18650 SAMSUNG/SANYO/PANASONIC 3500mAh

> the cells wouldnt work correctly for high voltage like 74 Volts I am sorry you have to listen to a "Guy" that tells you that kind of non-sense ;-) Better not to listen to him any more, because the statement in itself is ridiculous: The individual cell in the chain knows nothing about th...
by up0
Mar 07 2016 3:03pm
Forum: Battery Technology
Topic: JP spot-welder, FET-switched, timed adj. pulse
Replies: 619
Views: 83834

Re: JP spot welder

> , I noticed however that there are sparks every time he weld. Any idea why ? Good question - I am not an expert - having only done ~600 welds so far, but it seems to be very similar to the video that Javok made in the first post of this thread Screenshot: jp-welder-sparks.jpg I weld with 0.15 pur...
by up0
Mar 05 2016 3:35am
Forum: Battery Technology
Topic: JP spot-welder, FET-switched, timed adj. pulse
Replies: 619
Views: 83834

Re: JP spot welder

I was very sad to read that Jakov can't offer his welders any more at the moment. Hope he gets well again soon! I was lucky enough to still get one - but others are looking for alternatives. Until he is offering his welder again, this might be interesting: Today this popped up in my FlipBoard-reader...
by up0
Mar 05 2016 3:08am
Forum: EBike Build Threads
Topic: Neematic - 20kW middrive bike
Replies: 270
Views: 57808

Re: Neematic - 20kW middrive bike

I saw a couple of people asking if they will offer a Frame + Motor Kit,
and the answer from Neematic was, that they currently only plan to sell it as a complete bike :-(
Maybe we need to show them more interest from the community for a modular approach like the LMX.

Cheers, Ulli
by up0
Mar 02 2016 4:49pm
Forum: Battery Technology
Topic: 18650 spot welding -how to- ULTIMATE REPOSITORY
Replies: 813
Views: 211118

Re: 18650 spot welding -how to- ULTIMATE REPOSITORY

> But thats not rated for the 12 amps the parallel cells will use. Maybe I am missing sth, but I would have thought the the nickel-strips only have to carry half the Amps of the cells if you connect them at every point with the next strip . Lets make an example: My GA cells are rated for max 10A, a...
by up0
Feb 29 2016 5:56am
Forum: Battery Technology
Topic: 48V , 5A LiFeP04 Charger Repair?
Replies: 11
Views: 1552

Re: 48V , 5A LiFeP04 Charger Repair?

I know this thread is old and dead . I just stumbled across it while searching how to adjust the output voltage on my new charger (same type) and I saw that the wrong poti was marked in this thread. So just in order to prevent others from making mistakes, please follow these instructions instead: ht...
by up0
Feb 26 2016 10:27am
Forum: Battery Technology
Topic: 18650 spot welding -how to- ULTIMATE REPOSITORY
Replies: 813
Views: 211118

Re: 18650 spot welding -how to- ULTIMATE REPOSITORY

Hi Mailer, > But for now JP welder is not availiable any more. I am surprised the JP welder should not be available any more? UPDATE: I just saw riba's post - I am sorry to hear that! Hope he gets well soon again! Did you contact riba, who builds them with a PM? He is a very nice guy - definitely wo...
by up0
Feb 25 2016 11:10am
Forum: EBike Non-hub Motor Drives
Topic: Light, high torque, powerful mid drive motor choices
Replies: 42
Views: 7015

Re: Light, high torque, powerful mid drive motor choices

> Anyone know what the NT power motors are worth? > http://nt-power.eu/engine.html. I assume jobby prices or more... The price I have seen ~2 years back was around 1.500 Euro - I don't remember the source. I am not 100% sure they are still producing the motors (rumors, after Flytec stopped their pr...
by up0
Feb 24 2016 3:37pm
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 191
Views: 21789

Re: Speedict neptune lite

Hello Speedict! I would also be interested in a 24S Model #4 My pack has 20S and I believeyou will cover 99% of the market with a 24S model - there are very few users with 32S, and they will usually buy a complete BMS for Charge/Discharge etc. The users that are interested in Mobile-Phone connectivi...
by up0
Feb 17 2016 5:20am
Forum: Battery Technology
Topic: 18650 spot welding -how to- ULTIMATE REPOSITORY
Replies: 813
Views: 211118

Re: 18650 spot welding -how to- ULTIMATE REPOSITORY

> on what length of conductor are they based? I would think that the length should not really matter: If you push a certain Current (Ampere) through a wire it reaches the same temperature at every point, no matter how long or short. e.g. check out this video https://www.youtube.com/watch?v=0DhzWPoSY...
by up0
Feb 13 2016 5:55pm
Forum: Battery Technology
Topic: JP spot-welder, FET-switched, timed adj. pulse
Replies: 619
Views: 83834

Re: JP spot welder

> Then you can have 500 or more amps running centimeters from your skin in an insulated material. Haha, that was funny ;-) We are only talking about 12V here. The Amps are: I=U/R=12V/100,000Ohm=0.00012A In your chart that is below the "Threshold of Sensation" level The 500Amps will only ev...
by up0
Feb 11 2016 12:06pm
Forum: Electric Watercraft
Topic: Catamaran run-about, outboard conversion
Replies: 13
Views: 5608

Re: Catamaran run-about, outboard conversion

Wow! Great write-up! Thanks for letting us participate and learn from your findings! Just a thought for your new project: Wouldn't it be more efficient to use a direct-drive, placing the motor e.g. under the seat and with a long shaft directly into the water? Like the longtail boats in asia This wou...
by up0
Feb 10 2016 6:17pm
Forum: Battery Technology
Topic: HK Lipo Bricks - what do I choose and why?
Replies: 209
Views: 24624

Re: HK Lipo Bricks - what do I choose and why?

Hi Guys, I recently killed my Batteries (discharged to zero while gone for some weeks) and was looking for a suitable replacement. So I have read this thread and want to thank everyone who contributed! Particularly it was enlightening to see the comparison of LiPo-Bricks to 18650 cells. I have order...
by up0
Feb 24 2015 10:51am
Forum: EBike Non-hub Motor Drives
Topic: LMX P2 : Freeride trials motorcycle frame development
Replies: 999
Views: 237428

Re: LMX P2 : Freeride trials motorcycle frame development

> So, anyone else notice this picture is a mirror image? Sure, I have mirrored the image so it would be more easy to compare to Allex white schema-picture above ;-) No big secret behind it. > but the final product will have the seat subframe adjustable (+- 25mm). > Keep in mind this is the prototyp...
by up0
Feb 24 2015 7:57am
Forum: EBike Non-hub Motor Drives
Topic: LMX P2 : Freeride trials motorcycle frame development
Replies: 999
Views: 237428

Re: LMX P2 : Freeride trials motorcycle frame development

Drool! :D I can't wait for this to be released into the wild! Looks like amazing work by Lucas! > If you want to pedal or yet alone sit on the bike comfortably the pedals need to be in front of the seatpost. Hmm, good point! Looking at the picture on FaceBook: http://endless-sphere.com/forums/downlo...
by up0
Nov 21 2014 9:38am
Forum: Electric Watercraft
Topic: Hydrofoil GF09
Replies: 6
Views: 4921

Re: Hydrofoil GF09

Hi sk8norcal, yes, I had seen your evolo before, thanks for that! It seems more tricky to ride and you can't just get into it with dry clothes and expect them to stay dry (on a cold winter day). But on the other hand it will be more fun on a warm summer day. They might have slightly different audien...