Search found 287 matches

by garolittle
Sep 26 2019 8:45pm
Forum: Battery Technology
Topic: Battery options for electric kart
Replies: 29
Views: 656

Re: Battery options for electric kart

Upperfoot wrote:
Sep 25 2019 2:02am

I will be using the Orion JR bms on the pack, and using an Eltek charger alongside it (they both communicate together via CAN)

Very nice! :thumb:
by garolittle
Sep 26 2019 5:51am
Forum: Battery Technology
Topic: Battery options for electric kart
Replies: 29
Views: 656

Re: Battery options for electric kart

Hillhater wrote:
Sep 26 2019 5:43am
garolittle wrote:
Sep 25 2019 7:54pm
We use two separate 14S/20P modules of LG HG2 cells ("18650") connected in series for 51.8Vs nominal.
So is that 28S when connected ?....and 104 v ?
My apologies. I intended to say that it was two modules of 7S/20 P connected in series
by garolittle
Sep 25 2019 7:54pm
Forum: Battery Technology
Topic: Battery options for electric kart
Replies: 29
Views: 656

Re: Battery options for electric kart

We use two separate 14S/20P modules of LG HG2 cells ("18650") connected in series for 51.8Vs nominal. Paired with an AC-9 Alternating Current motor and a Curtis 1236SE controller, this makes for a fun ride. Check it out.... https://www.facebook.com/VenomKarts/
by garolittle
Sep 13 2019 1:36pm
Forum: Large EV General Discussion
Topic: Help me decide: Motor/Charge Controller for 55-MPH Go Kart (PICS)
Replies: 22
Views: 2885

Re: Help me decide: Motor/Charge Controller for 55-MPH Go Kart (PICS)

Wow this is an older topic. I actually did something very similar with a manco go kart. I went with a Motenergy ME1004 Motor, paired with an Alltrax SR48400 controller with Chevy Volt battery modules. I was able to find a high output balancing bms from AliExpress. I was able to purchase most of the...
by garolittle
Sep 02 2019 8:08pm
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 74
Views: 6955

Re: Go Kart Update

Great video! Your kart gets better each time I see pictures or videos.
by garolittle
Jul 31 2019 8:33am
Forum: E-Bike General Discussion
Topic: Pictures of 70 mph E Kart
Replies: 16
Views: 1148

Re: Pictures of 70 mph E Kart

Another Electric Go Kart fan .... complements of VenomKarts :o https://youtu.be/BD-PeZu2Q8k
by garolittle
Jul 25 2019 8:44am
Forum: E-Bike General Discussion
Topic: Pictures of 70 mph E Kart
Replies: 16
Views: 1148

Re: Pictures of 70 mph E Kart

flat tire wrote:
Jul 24 2019 4:06pm
I like the terminal caps on your wires. Nice build.
Thanks. We are always looking for ways to improve safety. Any additional suggestions are very much welcome. Thanks again for your comment.
by garolittle
Jul 24 2019 3:43pm
Forum: E-Bike General Discussion
Topic: Pictures of 70 mph E Kart
Replies: 16
Views: 1148

Re: Pictures of 70 mph E Kart

Short video of our prototype 70-mph E Kart. Thanks for all the support and ideas from those of you on Endless Sphere.... https://www.facebook.com/24718481265088 ... =e&sfns=mo

:bolt: :bolt:
by garolittle
Jul 15 2019 11:31pm
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 74
Views: 6955

Re: Go Kart Update

You are the "King of Electric Speed" my friend! Great work!
by garolittle
Jul 04 2019 7:14am
Forum: Motor Technology
Topic: Amp pull “at rest” for Curtis Controller
Replies: 7
Views: 257

Re: Amp pull “at rest” for Curtis Controller

major wrote:
Jul 04 2019 5:10am
Current (RMS) would be AC.

RMS = Root Mean Squared
Thanks major. Hope all is well.
by garolittle
Jul 03 2019 11:41pm
Forum: Motor Technology
Topic: Amp pull “at rest” for Curtis Controller
Replies: 7
Views: 257

Re: Amp pull “at rest” for Curtis Controller

No worry. DC refers to battery current. Been a while since I used the Curtis AC drive and I don't recall if they monitor and display DC or not. That's why I asked. Edit. BTW. The controller does output some DC, like 15, 12, & 5V for throttle pot, communication, and sensors. And also a selectable DC...
by garolittle
Jul 03 2019 9:06pm
Forum: Motor Technology
Topic: Amp pull “at rest” for Curtis Controller
Replies: 7
Views: 257

Re: Amp pull “at rest” for Curtis Controller

Ahhhh. Understand. You are correct. There are 5V and 12 V DC outputs. I know this because I’m about to install a charger for my iPhone. :D I can also monitor the DC voltage from these outputs as well. Let me run some checks tonight and I will let you know what I find out. In the meantime thank you v...
by garolittle
Jul 03 2019 4:50pm
Forum: Motor Technology
Topic: Amp pull “at rest” for Curtis Controller
Replies: 7
Views: 257

Re: Amp pull “at rest” for Curtis Controller

Are you seeing DC or AC as controller current? I'd expect AC to be higher. Also check to see you are getting zero throttle command. A few percent could draw some power yet be too low to move the vehicle. major .... Thanks. This is great information. I will double check but I am nearly certain that ...
by garolittle
Jul 03 2019 11:08am
Forum: Motor Technology
Topic: Amp pull “at rest” for Curtis Controller
Replies: 7
Views: 257

Amp pull “at rest” for Curtis Controller

OnI have an electrical go kart using a 48 V AC-9 motor and a Curtis 1236 SE controller. The controller software menu (under controller current and controller temperature), shows that the current (amp) range is between 2.0 and 4.2 Amps with no throttle action at all and the Controller temperature see...
by garolittle
Jun 26 2019 7:35am
Forum: Large EV General Discussion
Topic: Error Code I can not clear - Curtis Controller 1236
Replies: 17
Views: 1043

Re: Error Code I can not clear - Curtis Controller 1236

Everything is working great now. Thanks to everyone for their help. Going for 70 mph this weekend. Hit 54 mph with a 4 to 1 gear ratio. Check it out.

https://www.facebook.com/24718481265088 ... =e&sfns=mo
by garolittle
Jun 22 2019 3:16pm
Forum: Large EV General Discussion
Topic: Error Code I can not clear - Curtis Controller 1236
Replies: 17
Views: 1043

Re: Error Code I can not clear - Curtis Controller 1236

No. J1-25 only connects to the communication devices. J1-25 is 12V+ supplied from the Curtis internal circuitry for that purpose only. Do not connect J1-25 to any switch. All the switched inputs such as forward, J1-22 and reverse, J1-33 must be switched to J1-1, B+ (=54V positive) to activate. The ...
by garolittle
Jun 09 2019 9:29am
Forum: Large EV General Discussion
Topic: Go Kart Update
Replies: 74
Views: 6955

Re: Go Kart Update

Dude you are going to get a job offer from Tesla at some point. :-). Awesome project!
by garolittle
Jun 06 2019 11:24pm
Forum: Large EV General Discussion
Topic: Error Code I can not clear - Curtis Controller 1236
Replies: 17
Views: 1043

Re: Error Code I can not clear - Curtis Controller 1236

Got it. Thanks for the quick response. It makes sense now. Thanks
by garolittle
Jun 06 2019 8:32pm
Forum: Large EV General Discussion
Topic: Error Code I can not clear - Curtis Controller 1236
Replies: 17
Views: 1043

Re: Error Code I can not clear - Curtis Controller 1236

Yes, the reverse switch wiring doesn't look like the diagram. The middle wire on the switch goes to pack voltage (J1-1) in the diagram. I appreciate all of the great responses. I want to make sure I do this right so please see photo below. Currently, J1-25 (Red/Blue wire) is connected to the the mi...
by garolittle
Jun 06 2019 7:25pm
Forum: Large EV General Discussion
Topic: Error Code I can not clear - Curtis Controller 1236
Replies: 17
Views: 1043

Re: Error Code I can not clear - Curtis Controller 1236

fechter wrote:
Jun 06 2019 8:27am
Yes, the reverse switch wiring doesn't look like the diagram. The middle wire on the switch goes to pack voltage (J1-1) in the diagram.

Where does the orange wire go?
Thanks for all the great responses. :D The orange wire goes to the throttle (Curtis PB-6 "Pot Box" Throttle).
by garolittle
Jun 05 2019 6:31pm
Forum: Large EV General Discussion
Topic: Error Code I can not clear - Curtis Controller 1236
Replies: 17
Views: 1043

Re: Error Code I can not clear - Curtis Controller 1236

major wrote:
Jun 04 2019 6:28pm
Looks like J1-1 needs to be wired to center of SPDT switch, not 12V.
Hey sir. Thanks for your response. What does SPDT mean? Thanks
by garolittle
Jun 04 2019 11:47pm
Forum: Large EV General Discussion
Topic: Error Code I can not clear - Curtis Controller 1236
Replies: 17
Views: 1043

Re: Error Code I can not clear - Curtis Controller 1236

I appreciate all the great responses so far. I’m going to try a few things to see what happens. I will post the results as soon as I know the answer. Thanks again for all the help. This form is great. Gary.
by garolittle
Jun 04 2019 6:10pm
Forum: Large EV General Discussion
Topic: Error Code I can not clear - Curtis Controller 1236
Replies: 17
Views: 1043

Re: Error Code I can not clear - Curtis Controller 1236

Where do the other wires go? My take on the error is the 12v supply is getting loaded down too much from something. Can you post a wiring diagram? Ok. Voltage when connected = .08V Voltage when disconnected = 12.67V The orange wire is connected to the Curtis Throttle Box (PB-6). The yellow wire is ...
by garolittle
Jun 04 2019 11:58am
Forum: Battery Technology
Topic: Spot Welding Copper Strips to 18650 Battery Cells
Replies: 223
Views: 38613

Re: Spot Welding Copper Strips to 18650 Battery Cells

Great discussion. Very interesting ideas. I am still trying to convince my wife that the $10k spot welder would be a great Fathers Day gift. No luck yet. :-)
by garolittle
Jun 04 2019 10:55am
Forum: Large EV General Discussion
Topic: Error Code I can not clear - Curtis Controller 1236
Replies: 17
Views: 1043

Re: Error Code I can not clear - Curtis Controller 1236

My apologies. I should have measured the voltage using “B-“ on the controller. I will do so tonight and post the results. Thanks.