# Technical Discussions **URL:** https://community.electricforum.com/c/general-technical-discussions/62.md [Latest](https://community.electricforum.com/latest.md) · [Categories](https://community.electricforum.com/categories.md) · [Tags](https://community.electricforum.com/tags.md) --- ## [About the Technical Discussions category](https://community.electricforum.com/t/about-the-general-technical-discussions-category/188)
**Author:** [@system](https://community.electricforum.com/u/system)\ **Replies:** 1\ **Last updated:** [November 13, 2019, 5:52pm UTC](https://community.electricforum.com/t/about-the-general-technical-discussions-category/188 "2019-11-13T17:52:55Z")
General Discussion about technical issues. --- ## [Electric Boat help with selecting new motor](https://community.electricforum.com/t/electric-boat-help-with-selecting-new-motor/6330)
**Author:** [@nevbuggie](https://community.electricforum.com/u/nevbuggie)\ **Replies:** 7\ **Last updated:** [June 5, 2025, 10:23pm UTC](https://community.electricforum.com/t/electric-boat-help-with-selecting-new-motor/6330 "2025-06-05T22:23:35Z")
Hi all, I recently took ownership of a 1983 Duffy 18' boat, it is a fiberglass displacement hull cabin cruiser that is pure electric, inboard drive 2.5hp GE 36VDC series wound brushed motor that gets it to 3 and 5 mph … --- ## [Ford Think power issues](https://community.electricforum.com/t/ford-think-power-issues/29093)
**Author:** [@CCBee](https://community.electricforum.com/u/CCBee)\ **Replies:** 6\ **Last updated:** [April 19, 2025, 2:38am UTC](https://community.electricforum.com/t/ford-think-power-issues/29093 "2025-04-19T02:38:11Z")
I purchased a Ford Think that had been epically neglected. It came with a new (refurbished) cluster and dead batteries, so I couldn’t test anything out. I installed the cluster and installed new batteries. They were full… --- ## [Help with dc dc converter wireing](https://community.electricforum.com/t/help-with-dc-dc-converter-wireing/27711)
**Author:** [@Frasse](https://community.electricforum.com/u/Frasse)\ **Replies:** 12\ **Last updated:** [September 14, 2024, 6:14am UTC](https://community.electricforum.com/t/help-with-dc-dc-converter-wireing/27711 "2024-09-14T06:14:12Z")
Hello I´ve have one bigger converter I want to use but there are one cable the yellow one I need to know how connect … left connector are 60v input red and black the middle are the output 13,8v blue and green, right con… --- ## [2020 GEM e6 key not turning](https://community.electricforum.com/t/2020-gem-e6-key-not-turning/27856)
**Author:** [@ca123ta](https://community.electricforum.com/u/ca123ta)\ **Replies:** 3\ **Last updated:** [May 25, 2024, 4:51am UTC](https://community.electricforum.com/t/2020-gem-e6-key-not-turning/27856 "2024-05-25T04:51:49Z")
hi. I have a 2020 e6 in which the key will not turn inside the ignition cylinder. The tires are turned to the left and the steering wheel is locked with the key out. Once I put the key back in, the key will not tur… --- ## [Ford Think Solenoid Problem](https://community.electricforum.com/t/ford-think-solenoid-problem/27118)
**Author:** [@Wes](https://community.electricforum.com/u/Wes)\ **Replies:** 26\ **Last updated:** [January 11, 2024, 8:24pm UTC](https://community.electricforum.com/t/ford-think-solenoid-problem/27118 "2024-01-11T20:24:37Z")
On a Ford Think golf cart, when you do not hear the “click” upon turning the ignition switch on, how do you verify whether it’s the solenoid or some else that is preventing the solenoid from functioning properly. --- ## [2002 Gem e825 will not go forward or backwards](https://community.electricforum.com/t/2002-gem-e825-will-not-go-forward-or-backwards/19746)
**Author:** [@TommyL](https://community.electricforum.com/u/TommyL)\ **Replies:** 24\ **Last updated:** [August 4, 2022, 1:36pm UTC](https://community.electricforum.com/t/2002-gem-e825-will-not-go-forward-or-backwards/19746 "2022-08-04T13:36:09Z")
Hello first post. I’m helping a friend who just got a 2002 Gem e825 With dead batteries. I recommended the Mod 3 Tesla cells packs that are 24v and he purchased 3 of them. I put them in series and installed them. Her… --- ## [2013 ES 2 seater temp. no go?](https://community.electricforum.com/t/2013-es-2-seater-temp-no-go/23853)
**Author:** [@bandit1](https://community.electricforum.com/u/bandit1)\ **Replies:** 8\ **Last updated:** [April 4, 2022, 1:29am UTC](https://community.electricforum.com/t/2013-es-2-seater-temp-no-go/23853 "2022-04-04T01:29:38Z")
and was driving about 10 MPH about 200 yards and touched brakes and dash went black and squealer went off and no go. Hand brake on and off and key on and off 3-4 times and all is normal. Another 100 yards and parked and … --- ## [HELP WITH GIO FALCON ELECTRONIC SCOOTER](https://community.electricforum.com/t/help-with-gio-falcon-electronic-scooter/23732)
**Author:** [@docstar77](https://community.electricforum.com/u/docstar77)\ **Replies:** 1\ **Last updated:** [March 15, 2022, 8:02pm UTC](https://community.electricforum.com/t/help-with-gio-falcon-electronic-scooter/23732 "2022-03-15T20:02:58Z")
My scooter is about 2 years old. I live in a cold Canadian province, I actually rode this most of the winter and it performed amazingly well - the bike has been outside all winter. Now at the end of winter its develop… --- ## [Constant buzzing started while driving a 2002 e825](https://community.electricforum.com/t/constant-buzzing-started-while-driving-a-2002-e825/22720)
**Author:** [@E\_von\_K](https://community.electricforum.com/u/E_von_K)\ **Replies:** 4\ **Last updated:** [October 24, 2021, 5:44pm UTC](https://community.electricforum.com/t/constant-buzzing-started-while-driving-a-2002-e825/22720 "2021-10-24T17:44:07Z")
Hello everyone, I am new to the golf cart community. I just bought a 2002 e825, and my daughter and I were out driving when a constant buzzing noise started. We would park the car turn it off, and start it back up, and t… --- ## [2005 GEM car issues](https://community.electricforum.com/t/2005-gem-car-issues/5994)
**Author:** [@kingdom](https://community.electricforum.com/u/kingdom)\ **Replies:** 13\ **Last updated:** [January 11, 2020, 12:38pm UTC](https://community.electricforum.com/t/2005-gem-car-issues/5994 "2020-01-11T12:38:40Z")
Ran fine until recently and began losing speed until dead. Have nearly new batteries with 72 v showing, Controller checked twice. Seems that when plugged in, batteries full charged, car runs, but when returned to charg… --- ## [Motor Controller](https://community.electricforum.com/t/motor-controller/1208)
**Author:** [@Hayden](https://community.electricforum.com/u/Hayden)\ **Replies:** 5\ **Last updated:** [May 19, 2021, 1:46pm UTC](https://community.electricforum.com/t/motor-controller/1208 "2021-05-19T13:46:59Z")
I am trying to find a series motor controller, when i was looking at motor controllers, I guessed that the amperage of the controller needed to be higher (or equal to) the amps of the motor. Am a right? I find it odd tha… --- ## [Big conversion!](https://community.electricforum.com/t/big-conversion/21402)
**Author:** [@bigbad](https://community.electricforum.com/u/bigbad)\ **Replies:** 2\ **Last updated:** [May 8, 2021, 4:46am UTC](https://community.electricforum.com/t/big-conversion/21402 "2021-05-08T04:46:17Z")
I have driven vans most of my life - very versatile vehicle for fishing, camping, traveling. home projects, etc. I would love to convert a Ford E350 cargo van into an electric van (curve weight, 5,300 pounds, without th… --- ## [Need help with converting electric lawn tractor](https://community.electricforum.com/t/need-help-with-converting-electric-lawn-tractor/6287)
**Author:** [@epoland](https://community.electricforum.com/u/epoland)\ **Replies:** 8\ **Last updated:** [February 19, 2021, 2:23pm UTC](https://community.electricforum.com/t/need-help-with-converting-electric-lawn-tractor/6287 "2021-02-19T14:23:37Z")
I'm currently converting an old Murray lawn tractor to be completely electric. I can get the motor to run by hooking it directly up to the batteries, but I purchased a 36 volt golf cart solenoid and 3 amp diode, and a p… --- ## [EV speed limiting](https://community.electricforum.com/t/ev-speed-limiting/20611)
**Author:** [@Hami](https://community.electricforum.com/u/Hami)\ **Replies:** 7\ **Last updated:** [January 26, 2021, 4:15am UTC](https://community.electricforum.com/t/ev-speed-limiting/20611 "2021-01-26T04:15:00Z")
Hi all. Is there any way to limit the top speed of an EV? I’d like to keep the kids from speeding around the neighborhood… --- ## [Newbe here Hepl Ford think question](https://community.electricforum.com/t/newbe-here-hepl-ford-think-question/20524)
**Author:** [@Rbj619](https://community.electricforum.com/u/Rbj619)\ **Replies:** 1\ **Last updated:** [December 29, 2020, 1:40pm UTC](https://community.electricforum.com/t/newbe-here-hepl-ford-think-question/20524 "2020-12-29T13:40:57Z")
Hello all I am in the process of buying a Ford Think and am wondering if there is an easy way to tell if the electric motor was changed from the 4hp to the 6hp or that the recall was done on it ? --- ## [Electric fence charger?](https://community.electricforum.com/t/electric-fence-charger/13325)
**Author:** [@Howard22](https://community.electricforum.com/u/Howard22)\ **Replies:** 6\ **Last updated:** [December 9, 2020, 4:53pm UTC](https://community.electricforum.com/t/electric-fence-charger/13325 "2020-12-09T16:53:30Z")
Greetings, I’m not much of an electrician and I’m trying to check out a electric fence. I have a Fluke 23III meter and the fence charger is a Red Snapr .5 Joule rated at 7000 volts. I hesitate to grab hold of it and I’… --- ## [Main Contactor Ohm reading across coil leads](https://community.electricforum.com/t/main-contactor-ohm-reading-across-coil-leads/20236)
**Author:** [@culbert425](https://community.electricforum.com/u/culbert425)\ **Replies:** 4\ **Last updated:** [November 15, 2020, 1:51am UTC](https://community.electricforum.com/t/main-contactor-ohm-reading-across-coil-leads/20236 "2020-11-15T01:51:42Z")
I have a 2015 Gem eLXD with MAIN CONTACTOR part # 4013854 . Trying to determine if it is faulty, troubleshooting guide in manual indicated so. Got 450 Ohms across the coil leads (the small tabs). Wondering if anyone … --- ## [Car Loan](https://community.electricforum.com/t/car-loan/5357)
**Author:** [@JakeAndeson](https://community.electricforum.com/u/JakeAndeson)\ **Replies:** 6\ **Last updated:** [October 4, 2020, 2:25pm UTC](https://community.electricforum.com/t/car-loan/5357 "2020-10-04T14:25:51Z")
Hi there! So I’ve been in Canada since one and half years and I’ve got to a point where I need to get a car. I got a credit card only a few weeks ago and so I have no credit history. I was hoping to finance a car around… --- ## [Dash lights blinking after changing batteries](https://community.electricforum.com/t/dash-lights-blinking-after-changing-batteries/19966)
**Author:** [@Sharkba8](https://community.electricforum.com/u/Sharkba8)\ **Replies:** 0\ **Last updated:** [October 2, 2020, 11:49am UTC](https://community.electricforum.com/t/dash-lights-blinking-after-changing-batteries/19966 "2020-10-02T11:49:18Z")
I changed 2 batteries on my 2008 Gem and now all of the dash lights are blinking. Wrench light temp light turtle light and the forward / reverse light. The car still runs good but the lights are flashing. I’ve changed 2 … --- ## [Is this a good Motor to use?](https://community.electricforum.com/t/is-this-a-good-motor-to-use/19917)
**Author:** [@Cr1msonFir3](https://community.electricforum.com/u/Cr1msonFir3)\ **Replies:** 1\ **Last updated:** [September 26, 2020, 4:24am UTC](https://community.electricforum.com/t/is-this-a-good-motor-to-use/19917 "2020-09-26T04:24:33Z")
This is a motor off of a brake lathe. It’s currently set to 115v off a wall plug. Was wondering if this can be used as a motor for something like a small go kart or maybe even a motorcycle. Would it even be worth it? (… --- ## [23 pin connector re-pin for spoof etc](https://community.electricforum.com/t/23-pin-connector-re-pin-for-spoof-etc/13405)
**Author:** [@Inwo](https://community.electricforum.com/u/Inwo)\ **Replies:** 27\ **Last updated:** [August 13, 2020, 12:29am UTC](https://community.electricforum.com/t/23-pin-connector-re-pin-for-spoof-etc/13405 "2020-08-13T00:29:31Z")
First off, do it when you have time and good lighting. Easy enough, but don’t want to break it. In a nutshell, the red part gets released by the black tabs on the sides. It is this part (red) that locks the pins in. T… --- ## [How do I find a short circuit?](https://community.electricforum.com/t/how-do-i-find-a-short-circuit/1167)
**Author:** [@jaques](https://community.electricforum.com/u/jaques)\ **Replies:** 6\ **Last updated:** [March 13, 2020, 10:06am UTC](https://community.electricforum.com/t/how-do-i-find-a-short-circuit/1167 "2020-03-13T10:06:40Z")
Hi All, I am trying to find a open or short circuit that is in a harness with other wires. With so many of you having expertise in electronics, I thouht here would be a good place to post my question. Does anyone hav… --- ## [Active balance boards/BMS for a 45 cell EV van?](https://community.electricforum.com/t/active-balance-boards-bms-for-a-45-cell-ev-van/18251)
**Author:** [@Shanewynn](https://community.electricforum.com/u/Shanewynn)\ **Replies:** 1\ **Last updated:** [March 7, 2020, 2:49pm UTC](https://community.electricforum.com/t/active-balance-boards-bms-for-a-45-cell-ev-van/18251 "2020-03-07T14:49:32Z")
I have an Electric Moose. It’s built on a small van shell in 2005 in Los Gatos by a company that went out of business soon after they built a small fleet for University California Santa Cruz. Has a 20k water cooled motor… --- ## [Winter storage of Gem car](https://community.electricforum.com/t/winter-storage-of-gem-car/17621)
**Author:** [@abelow](https://community.electricforum.com/u/abelow)\ **Replies:** 0\ **Last updated:** [November 30, 2019, 7:02pm UTC](https://community.electricforum.com/t/winter-storage-of-gem-car/17621 "2019-11-30T19:02:12Z")
Best method for winter storage of Gem car with non-gel batteries --- ## [Turn signal issues](https://community.electricforum.com/t/turn-signal-issues/17345)
**Author:** [@MrWonderful](https://community.electricforum.com/u/MrWonderful)\ **Replies:** 2\ **Last updated:** [October 22, 2019, 2:32am UTC](https://community.electricforum.com/t/turn-signal-issues/17345 "2019-10-22T02:32:07Z")
I am having trouble with right turn signal shutting down head lights, horn and both turn signals. Will reset itself after I cycle on and off and wait a minute or two. Had a bad bulb in rear right (blinker filament out) a… --- ## [Gem E 2 transmission whine](https://community.electricforum.com/t/gem-e-2-transmission-whine/16807)
**Author:** [@waynewainwright](https://community.electricforum.com/u/waynewainwright)\ **Replies:** 0\ **Last updated:** [August 6, 2019, 9:29pm UTC](https://community.electricforum.com/t/gem-e-2-transmission-whine/16807 "2019-08-06T21:29:55Z")
Hi just replaced the input gear and buffer along with gear oil on my 2007 Gem E2 and now have a very high pitched whine that was not there before, any suggestions? --- ## [\-04 replaced micro switch and still have error code](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353)
**Author:** [@Samson](https://community.electricforum.com/u/Samson)\ **Replies:** 36\ **Last updated:** [April 17, 2019, 11:41pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353 "2019-04-17T23:41:26Z")
I replaced my micro switch on my gem car and I still receive an error code -04 how do I fix this? --- ## [Kelly motor controller control box](https://community.electricforum.com/t/kelly-motor-controller-control-box/15863)
**Author:** [@Don\_Elwell](https://community.electricforum.com/u/Don_Elwell)\ **Replies:** 0\ **Last updated:** [April 16, 2019, 4:02pm UTC](https://community.electricforum.com/t/kelly-motor-controller-control-box/15863 "2019-04-16T16:02:23Z")
This is an odd little question. We recently got a kdz type controller for our marine application and one of kelly controls’ “controller accessory” boxes to facilitate messing about with same. Unfortunately, the thing c… --- ## [To understand the flaws of battery fast charging by X-rays](https://community.electricforum.com/t/to-understand-the-flaws-of-battery-fast-charging-by-x-rays/15438)
**Author:** [@tktech](https://community.electricforum.com/u/tktech)\ **Replies:** 0\ **Last updated:** [February 15, 2019, 12:54pm UTC](https://community.electricforum.com/t/to-understand-the-flaws-of-battery-fast-charging-by-x-rays/15438 "2019-02-15T12:54:38Z")
Researchers imaged a battery as it was quickly charged and discharged, allowing for the observation of lithium plating behavior that can inhibit the battery’s long-term function. As lithium ions travel quickly between t… [Next page](https://community.electricforum.com/c/general-technical-discussions/62.md?page=1)