Search found 93 matches

by Electric Junk
Apr 25 2018 5:19pm
Forum: E-Bike Technical
Topic: Thunder 1220 charger issues.
Replies: 1
Views: 279

Thunder 1220 charger issues.

My thunder 1220 charger screen goes dim after about a minute on the charger. It doesn't discharge at all. When it does charge it doesn't show cell voltage. I read a review that someone had the same problem. I'm looking to either try and fix it or replace it with something comparable, maybe 200w even.
by Electric Junk
Jun 17 2015 2:38am
Forum: E-Bike Non-hub Motor Drives
Topic: GNG Gen2 mid drive with Fat bike (100mm BB)
Replies: 2
Views: 614

Re: GNG Gen2 mid drive with Fat bike (100mm BB)

I'm pretty sure with a bunch of spacers for the motor housing and a 100mm square taper bb it would work. I mounted my old gen 2 on 100mm by cutting the motor plate and adding a bunch of washers to space it out.
by Electric Junk
Jun 01 2015 2:18pm
Forum: Battery Technology
Topic: 18650 spot welding -how to- ULTIMATE REPOSITORY
Replies: 759
Views: 157231

Re: 18650 spot welding -how to- ULTIMATE REPOSITORY

Just a tip i was having problems stacking nickel strip for more amps so i sanded the top layer and it stuck better with less heat.
by Electric Junk
May 31 2015 3:49pm
Forum: Battery Technology
Topic: Help with converting pc power supply.
Replies: 11
Views: 826

Re: Help with converting pc power supply.

I just edited the post above to say that i had resistors on all the plugs. I'm not a computer guy so i don't have parts around. Do you feel the resistors have would be sufficient on all the loads?....I'm just trying to get it to do something that resembles any hope in getting it to work. Full AC pow...
by Electric Junk
May 31 2015 2:23pm
Forum: Battery Technology
Topic: Help with converting pc power supply.
Replies: 11
Views: 826

Re: Help with converting pc power supply.

Mine is atx .2.3, specifically a thermaltake tr2 450w not sure if they added more safety switches and cutoffs in the design. As it sits now the charger is plugged in to the 12v, the green wire is jumped, I'm getting 5v at the purple and 17v at the gray, .4v between red and black before the resistor ...
by Electric Junk
May 31 2015 4:03am
Forum: Battery Technology
Topic: Help with converting pc power supply.
Replies: 11
Views: 826

Help with converting pc power supply.

I have a newer 450 watt ATX with the 24 pin connector...it only has one voltage signal wire that the newer ones have, a brown one shared by another brown that i soldered together......I took apart one of my old chargers to get at the resistors, 6 10 watt 4ohms. I tried all sorts of different combina...
by Electric Junk
May 27 2015 5:54pm
Forum: Battery Technology
Topic: Power supply hissing noise
Replies: 1
Views: 223

Power supply hissing noise

I have a thunder t350 that gives my charger low voltage errors even though it shows 14v. I was wondering what could cause the hissing and if it could be easily repaired. I left the charger plugged into the power supply not charging anything and the PS was on, hot and was making a hissing, crackling ...
by Electric Junk
May 19 2015 2:36pm
Forum: Battery Technology
Topic: 788 spot welder
Replies: 98
Views: 17696

Re: 788 spot welder

Syonyk wrote:Were you running a low voltage signal to the micro switch and driving the transformer with a relay, or were you running full line voltage through the microswitch?

Full voltage.....Is there a better alternative?
by Electric Junk
May 19 2015 12:48am
Forum: Battery Technology
Topic: 788 spot welder
Replies: 98
Views: 17696

Re: 788 spot welder

Syonyk wrote:
tomjasz wrote:Fuse in the welder is good.

What are you using to control the current pulse?
I use a micro switch on the electrode tip and hold it like a pencil and press the lever with my index finger. No issues with the switch even though i wondered how it could handle the cycles.
by Electric Junk
May 18 2015 7:50pm
Forum: General Discussion
Topic: How do you ship batteries ?
Replies: 5
Views: 445

Re: How do you ship batteries ?

I'll help so people who get directed here from google find what they need faster.

http://endless-sphere.com/forums/viewto ... ping+Rules
by Electric Junk
May 18 2015 7:45pm
Forum: Battery Technology
Topic: 788 spot welder
Replies: 98
Views: 17696

Re: 788 spot welder

I was looking at the chinese welder but eventually decided make a mot welder. Works fantastic. I would never go back to soldering cells. I tried it a few times but didn't feel safe doing it because i had a few start to smell. Welding cells is a game changer.
by Electric Junk
May 18 2015 7:41pm
Forum: Battery Technology
Topic: 1220 thunder chargers
Replies: 10
Views: 786

Re: 1220 thunder chargers

I recently bought bought the 1220 charger as well as a thunder t350 power supply. When i was using the PS it would show "low car battery" within a few seconds to a minute. I put the charger on a SLA and it worked normal. I sent both back to hobbypartz to replicate the problem and let them figure out...
by Electric Junk
May 12 2015 6:52pm
Forum: E-Bike Non-hub Motor Drives
Topic: Bafang BBs02 internal retaining nut tool
Replies: 6
Views: 830

Re: Bafang BBs02 internal retaining nut tool

I'm assuming the preload on the inner nut it somewhere comparable to servicing a hub.....fairly loose, but also snug...but not tight.
by Electric Junk
May 11 2015 11:39am
Forum: E-Bike Non-hub Motor Drives
Topic: Bafang BBs02 internal retaining nut tool
Replies: 6
Views: 830

Re: Bafang BBs02 internal retaining nut tool

Thanks i eventually used needle nose pliers and turned the shaft with a vise grip on the other end. It came off fairly easily. My new problem is how to get the shaft out of the carrier...I tried hitting it a few times on the retaining nut side but it didn't go anywhere. I don't want to hit it harder...
by Electric Junk
May 10 2015 3:40pm
Forum: E-Bike Non-hub Motor Drives
Topic: Bafang BBs02 internal retaining nut tool
Replies: 6
Views: 830

Bafang BBs02 internal retaining nut tool

Does anyone have a clever way of making or using existing tool to remove this. I have minimal means of making tools but i have plenty of junk i could probably use. I just opened it up and noticed a lot of grit on the gears....I would recommend anyone with the kit past 200 miles to open it up and cle...
by Electric Junk
Apr 21 2015 5:13pm
Forum: Battery Technology
Topic: Hobbyking lipo dent.
Replies: 8
Views: 804

Hobbyking lipo dent.

http://imgur.com/UaRlkDC http://imgur.com/MMuewH2 ne of my new hobbyking batteries has a big dent in it from shipping. I guess hobbyking thinks all the package air packets should be on top and all the loose heavy things should be flopping all around on the bottom. This is my first lipo experience so...
by Electric Junk
Apr 19 2015 6:18am
Forum: E-Vehicles General Discussion
Topic: Small prebuilt series/Parallel connectors
Replies: 3
Views: 670

Re: Small prebuilt series/Parallel connectors

http://m.aliexpress.com/item/32220188101.html?productId=32220188101&productId=32220188101&productSubject=No-Wire-Deans-Style-T-Plug-Parallel-RC-Battery-ESC-Connector-Adapter-1M2F-5pcs-in-one&productSubject=No-Wire-Deans-Style-T-Plug-Parallel-RC-Battery-ESC-Connector-Adapter-1M2F-5pcs-in-one&tracelog...
by Electric Junk
Apr 18 2015 10:00pm
Forum: E-Vehicles General Discussion
Topic: Small prebuilt series/Parallel connectors
Replies: 3
Views: 670

Small prebuilt series/Parallel connectors

I see these prebuilt connectors on ebay that have no exposed wires just fake deans connectors soldered back to back. I was wondering if anyone had any experience or pictures of the inside. I feel like if they rattled loose depending what the inside looks like thet could short easy.
by Electric Junk
Jan 30 2015 7:40pm
Forum: Battery Technology
Topic: 18560 smells
Replies: 9
Views: 851

Re: 18560 smells

So it's safe to say if it smells at all then it's shot?
by Electric Junk
Jan 30 2015 7:03pm
Forum: Battery Technology
Topic: 18560 smells
Replies: 9
Views: 851

Re: 18560 smells

I have a butane iron on full i tried for 3 but probably had to go longer
by Electric Junk
Jan 30 2015 6:54pm
Forum: Battery Technology
Topic: 18560 smells
Replies: 9
Views: 851

Re: 18560 smells

I have a butane iron on full i tried for 3 but probably had to go longer
by Electric Junk
Jan 30 2015 5:53pm
Forum: Battery Technology
Topic: 18560 smells
Replies: 9
Views: 851

18560 smells

Are they supposed to smell a little after soldering? They got a little warm after i put some solder on the end but was careful to stay on it too long. They are the bargain blue cells
by Electric Junk
Jan 23 2015 3:43am
Forum: Battery Technology
Topic: What causes a voltmeter to read a dead 18650 cell @ 150v?
Replies: 3
Views: 379

What causes a voltmeter to read a dead 18650 cell @ 150v?

I have a 15ah 13s pack were the 6th bank of cells reads 150v. Individually, each cell reads 120v to 170v. Multimeter is an innova 3320. When tested the dead bank along with another bank it was only a fraction of a volt higher. This leads me to believe these cells are dead but i don't know what expla...
by Electric Junk
Sep 20 2014 5:37am
Forum: E-Bike Technical
Topic: increasing voltage to 48v on MAC motor
Replies: 4
Views: 658

Re: increasing voltage to 48v on MAC motor

I charged my 48v battery on a 12v charger in parallel. The connector was able to disconnect the continuity and allow a bunch of small alligator clips to be connected parallel directly on the contacts. you can follow the connections clipped and unclipped and see how it works. http://assets.academy.co...
by Electric Junk
Sep 18 2014 8:57pm
Forum: Battery Technology
Topic: Calibike batt stats with CAv2.3
Replies: 85
Views: 6563

Re: Calibike batt stats with CAv2.3

Simple, i don't know if you saw but i posted earlier that the cheapo on off switch is suspect in my battery problems....i'm twisting the wires together now but plan on putting in a quality switch. If it was on and i shook it then it would turn off, perhaps if it's off it could possibly be shaken bac...