Search found 249 matches

by garolittle
Apr 23 2019 9:38pm
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 55
Views: 3797

Re: Go Kart Update

Upperfoot wrote:
Apr 23 2019 9:13am
garolittle wrote:
Apr 22 2019 7:25pm
Really looks awesome. Keep sending pictures. I can not get enough!
Thanks mate, haven't even taken it out of the shed yet, can't wait for its first test run on the 4th
Awesome. Keep us posted on your progress!
by garolittle
Apr 22 2019 7:25pm
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 55
Views: 3797

Re: Go Kart Update

Really looks awesome. Keep sending pictures. I can not get enough!
by garolittle
Apr 21 2019 10:44pm
Forum: Battery Technology
Topic: Spot Welding Copper Strips to 18650 Battery Cells
Replies: 192
Views: 29740

Re: Spot Welding Copper Strips to 18650 Battery Cells

So what would happen if you put a hole in the copper so that one probe goes directly to the battery and the other probe on the copper tab... Interesting idea. I suspect "spinningmagnets" is your best bet for an accurate answer to this question. My suspicion is that the copper will still disperse th...
by garolittle
Apr 18 2019 6:49pm
Forum: Battery Technology
Topic: Spot Welding Copper Strips to 18650 Battery Cells
Replies: 192
Views: 29740

Re: Spot Welding Copper Strips to 18650 Battery Cells

protoham wrote:
Apr 18 2019 1:27pm
I just got pricing from Sunstone for this welder, I was really considering buying one > Sit Down ........... Over $24,000.00.
Yeah but you would be the envy of everyone here. :-)
by garolittle
Apr 13 2019 4:30pm
Forum: Items for Sale - Used
Topic: K-Weld Unit - Slightly Used
Replies: 4
Views: 265

Re: K-Weld Unit - Slightly Used

999zip999 wrote:
Apr 09 2019 4:15pm
Gone :(
Really good spot welder. If you can not get one used, I think paying the price for a new one is well worth it. The K-Weld unit is extremely consistent and it comes with excellent customer service. Highly recommend this spot welder. :thumb:
by garolittle
Apr 09 2019 3:32pm
Forum: Items for Sale - Used
Topic: K-Weld Unit - Slightly Used
Replies: 4
Views: 265

Re: K-Weld Unit - Slightly Used

devo1223 wrote:
Apr 09 2019 1:00pm
I'll take it. Emailed and PM'd
Sold. Thanks Derek.

Gary Little
by garolittle
Apr 08 2019 11:47pm
Forum: Items for Sale - Used
Topic: K-Weld Unit - Slightly Used
Replies: 4
Views: 265

K-Weld Unit - Slightly Used

Asking $125 for the K-Weld unit and parts as seen in attached pictures (Free Shipping). I have a barely used this K-Weld unit produced by Keenlab. I bought it from a distributor last summer and only used it a few times. It works perfectly and I will return your money if you are not 100% satisfied. J...
by garolittle
Mar 23 2019 8:46am
Forum: Resources & EV Related Parts and Services
Topic: Want to buy a custom made go kart?
Replies: 2
Views: 231

Re: Want to buy a custom made go kart?

Nice. If it ante rubbing it ain't racing ! Free test ride. Love it. Thanks. Many updates since I posted this. The production version will have a much more powerful motor/controller. 48V AC-9 with 600A Curtis controller. Kart will also include a small roll bar to improve safety. Thrills are free. Ve...
by garolittle
Mar 18 2019 5:24pm
Forum: Battery Technology
Topic: Nissan Leaf Modules over 500 amps peak?
Replies: 19
Views: 376

Re: Nissan Leaf Modules over 500 amps peak?

Hillhater wrote:
Mar 18 2019 5:13pm
Maybe this is the one refered to..
http://media3.ev-tv.me/DOEleaftest.pdf
It reports a pack test peak discharge of 201 kW which would imply over 500amps
Very interesting stuff. Thanks for sharing this thread. It looks like several people have claimed to have reached 500 amps (max current).
by garolittle
Mar 18 2019 4:27pm
Forum: Battery Technology
Topic: Nissan Leaf Modules over 500 amps peak?
Replies: 19
Views: 376

Re: Nissan Leaf Modules over 500 amps peak?

“According US Department of ENERGY study* these batteries can provide up to 240A continuous or over 540A short time on pulse (time is not specified).”

I have not found this particular report on the web yet but I will post a link if I do.
by garolittle
Mar 18 2019 4:25pm
Forum: Battery Technology
Topic: Nissan Leaf Modules over 500 amps peak?
Replies: 19
Views: 376

Re: Nissan Leaf Modules over 500 amps peak?

https://evbatterycenter.com/HAC4/index. ... Itemid=631

So they make an interesting case for why Leaf modules may handle higher current. I will do some testing and post the results.
by garolittle
Mar 17 2019 8:31am
Forum: Battery Technology
Topic: Nissan Leaf Modules over 500 amps peak?
Replies: 19
Views: 376

Re: Nissan Leaf Modules over 500 amps peak?

Some background reading, and test data... https://endless-sphere.com/forums/viewtopic.php?f=14&t=52162&hilit=Nissan+leaf+module+test Plenty of evidence for that 540A peak. Thanks for the link. I need to read it carefully but I did notice the following quote..... :shock: maybe these cells can handle...
by garolittle
Mar 17 2019 7:58am
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 55
Views: 3797

Re: Go Kart Update

You know with a pair of wings attached, you have a decent chance of taking flight. :lol: Seriously, that is an awesome project. Thanks for sharing your progress and keep posting pictures. Gary VenomKarts.com
by garolittle
Mar 17 2019 1:08am
Forum: Battery Technology
Topic: Nissan Leaf Modules over 500 amps peak?
Replies: 19
Views: 376

Re: Nissan Leaf Modules over 500 amps peak?

Leaf modules work great in my golf cart. Much better than the FLA batteries I replaced with them. I have 14 modules which means they are two in parallel so they easily do 300 Amps burst which is all I need. I have 120AH capacity at 58V nominal. The pack weighs 110 pounds which is 250 pounds less th...
by garolittle
Mar 17 2019 12:18am
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 55
Views: 3797

Re: Go Kart Update

By the way, What is the circumference of the rear tires. Dang.... that is going to be fast. :shock:
by garolittle
Mar 17 2019 12:12am
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 55
Views: 3797

Re: Go Kart Update

Well at 80hp and 90ft lbs of torque, with a 2:1 (15f / 30r) gear ratio I should be able to get to 102 mph at 6000rpm, though because I have so much torque I could gear much more aggressively 1.6:1 (15f / 24f) and get to 128 mph (102 mph at 4800rpm) Dude..... that is unreal. We simply must see some ...
by garolittle
Mar 16 2019 4:03pm
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 55
Views: 3797

Re: Go Kart Update

Why don't you go for my 100v setup with a Motenergy ME1616/1507 and a Sevcon Gen4 Size 6? Not much difference in cost except the batteries, I spent £1600 ($2000) for the controller and motor, how much is the AC-9 and Curtis controller? Your set up is tempting. I am testing various 48V (or possibly ...
by garolittle
Mar 16 2019 2:07pm
Forum: Battery Technology
Topic: Nissan Leaf Modules over 500 amps peak?
Replies: 19
Views: 376

Re: Nissan Leaf Modules over 500 amps peak?

Checked out your website you look like spinning magnets little brother. What's up with that ? Ceramic over didn't know we're having a spinning magnets look-alike contest. Lol! He and I have the same awesome haircut. I only wish I knew as much about battery technology as he does. He is the King! :-)
by garolittle
Mar 16 2019 1:48pm
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 55
Views: 3797

Re: Go Kart Update

Thanks again. This is very helpful. I am new to the RC battery world since I have been focusing on 18650 lithium ion and similar cells. I am interested in creating an RC battery pack to test an AC-9 motor (HPEV.com) and a 48 Volt 600 amp Curtis Controller. The trick is to get as close to 48V as poss...
by garolittle
Mar 16 2019 1:02pm
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 55
Views: 3797

Re: Go Kart Update

Yes Sir. Now that is excellent. I may try a similar setup for testing purposes. Really appreciate the responses to my questions. You are very helpful. :thumb: Gary VenomKarts.com
by garolittle
Mar 16 2019 12:56pm
Forum: Battery Technology
Topic: Nissan Leaf Modules over 500 amps peak?
Replies: 19
Views: 376

Re: Nissan Leaf Modules over 500 amps peak?

Thanks John. Good feedback. I appreciate it. Gary VenomKarts.com
by garolittle
Mar 16 2019 11:53am
Forum: Battery Technology
Topic: Nissan Leaf Modules over 500 amps peak?
Replies: 19
Views: 376

Re: Nissan Leaf Modules over 500 amps peak?

spinningmagnets wrote:
Mar 16 2019 11:01am
Add 100-psi compression on the flat sides, and also add a temp sensor to the inner cells. 140F temps or more are a no-go, warm is good, hot is bad.

Extraordinary claims require extraordinary evidence.
Thanks sir. I hope you’ve been doing well. I really appreciate your response. Gary
by garolittle
Mar 16 2019 11:36am
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 55
Views: 3797

Re: Go Kart Update

I would love to see more detailed photos of how you connected all those RC batteries to the thick wires. Thanks again for sharing your project. Gary VenomKarts.com

Edit... added picture.
by garolittle
Mar 16 2019 11:34am
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 55
Views: 3797

Re: Go Kart Update

No suggestions other than to do your best in preventing your spouse or significant other from finding out how much you spent. I struggle with that one. :D I do have one request. If you have any pictures, can you post some photos of how the RC batteries are crimped or soldered into the 0/2 gauge cabl...
by garolittle
Mar 16 2019 10:29am
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 55
Views: 3797

Re: Go Kart Update

Dude that thing is a beast. Seriously, I am very impressed at how you built this project. Really nice! :thumb: Gary VenomKarts.com