# Do It Yourself (DIY) **URL:** https://community.electricforum.com/c/electric-vehicle-diy-forum/147.md?page=1 [Latest](https://community.electricforum.com/latest.md) · [Categories](https://community.electricforum.com/categories.md) · [Tags](https://community.electricforum.com/tags.md) **Page:** 2 --- ## [Adding a legal trailer hitch to my Renault Zoe Q90](https://community.electricforum.com/t/adding-a-legal-trailer-hitch-to-my-renault-zoe-q90/15564)
**Author:** [@eDrive](https://community.electricforum.com/u/eDrive)\ **Replies:** 0\ **Last updated:** [March 5, 2019, 5:08pm UTC](https://community.electricforum.com/t/adding-a-legal-trailer-hitch-to-my-renault-zoe-q90/15564 "2019-03-05T17:08:06Z")
I add a legal trailer hitch to my Renault Zoe Q90 for having a trailer up to 750 kg permissible total weight. The mounting was quite some work, but the most complicated and time consuming one was connecting the cables f… --- ## [144vdc?](https://community.electricforum.com/t/144vdc/4872)
**Author:** [@debeerd](https://community.electricforum.com/u/debeerd)\ **Replies:** 6\ **Last updated:** [January 21, 2019, 3:31am UTC](https://community.electricforum.com/t/144vdc/4872 "2019-01-21T03:31:07Z")
I've been reading up quite a bit and seems it is better to save up and go 144VDC from the word go. What make chargers, Electric motors and controllers are good ? I would hate to buy the wrong stuff and waste my money… --- ## [Led tester/ 27v continuity](https://community.electricforum.com/t/led-tester-27v-continuity/15025)
**Author:** [@Inwo](https://community.electricforum.com/u/Inwo)\ **Replies:** 0\ **Last updated:** [December 3, 2018, 8:44pm UTC](https://community.electricforum.com/t/led-tester-27v-continuity/15025 "2018-12-03T20:44:51Z")
I built similar with a switch to change profiles in DeltaQ chargers. It has become so useful that I made one without the switch. Testing leds was a two person job. One to push the switch. A kid is stopping in today or … --- ## [2002 e825 2 seater for sale](https://community.electricforum.com/t/2002-e825-2-seater-for-sale/14958)
**Author:** [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Replies:** 0\ **Last updated:** [November 19, 2018, 7:49pm UTC](https://community.electricforum.com/t/2002-e825-2-seater-for-sale/14958 "2018-11-19T19:49:31Z")
Real nice 2002 one owner has been serviced. Motor has been replaced. Tires, enclosure , upholstery are mint. $2650 Located in Tavares Florida Rodney rodneyadiehl@aol.com --- ## [sharing power for a fv ](https://community.electricforum.com/t/sharing-power-for-a-fv/13839)
**Author:** [@bigd31998](https://community.electricforum.com/u/bigd31998)\ **Replies:** 1\ **Last updated:** [October 8, 2018, 8:24am UTC](https://community.electricforum.com/t/sharing-power-for-a-fv/13839 "2018-10-08T08:24:53Z")
ok i hope this is the right place to ask this type of question .We have a Chevy van set up for camping we have one battery for starting to van and two house batteries that charge off the alternator when we drive and powe… --- ## [2002 Gem Car 4 seater extension cord fried and car not doing anything](https://community.electricforum.com/t/2002-gem-car-4-seater-extension-cord-fried-and-car-not-doing-anything/13809)
**Author:** [@Erichy](https://community.electricforum.com/u/Erichy)\ **Replies:** 2\ **Last updated:** [October 8, 2018, 8:11am UTC](https://community.electricforum.com/t/2002-gem-car-4-seater-extension-cord-fried-and-car-not-doing-anything/13809 "2018-10-08T08:11:39Z")
Hey guys I had my Gem plugged in this winter to keep it charged (upgraded charger to get the trickle) and the extension cord melted at the outlet. Now when I turn the key nothing happens at all, no solenoid click or any… --- ## [Diy brake upgrade](https://community.electricforum.com/t/diy-brake-upgrade/5698)
**Author:** [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Replies:** 3\ **Last updated:** [October 4, 2018, 10:28am UTC](https://community.electricforum.com/t/diy-brake-upgrade/5698 "2018-10-04T10:28:20Z")
THE INFORMATION IS NOT VALID. DISREGARD RODNEY DIEHL 7/15/20 Stock GEM brakes are marginal at best. If you have GOOD wheel cylinders and DRY brake shoes you can increase the stopping power by replacing your Master … --- ## [Would This E-Bike Work?](https://community.electricforum.com/t/would-this-e-bike-work/14584)
**Author:** [@Bruce\_T](https://community.electricforum.com/u/Bruce_T)\ **Replies:** 13\ **Last updated:** [September 22, 2018, 6:05pm UTC](https://community.electricforum.com/t/would-this-e-bike-work/14584 "2018-09-22T18:05:11Z")
Hi. I know nothing about electricity or electrical equipment, but I have this idea which I’ve shown in this rough sketch. My idea is that as you peddle and turn the rear wheel, which turns the generator, the electricity … --- ## [DIY Digital Battery Balance Monitor](https://community.electricforum.com/t/diy-digital-battery-balance-monitor/14346)
**Author:** [@Functional\_Artist](https://community.electricforum.com/u/Functional_Artist)\ **Replies:** 0\ **Last updated:** [August 20, 2018, 5:36pm UTC](https://community.electricforum.com/t/diy-digital-battery-balance-monitor/14346 "2018-08-20T17:36:54Z")
I want to share a simple battery balance monitor that I have designed & assembled It uses (2) digital voltage meters (~$3.00 ea.) & a DPST (dual pole single throw) switch (~$2.00) Each meter is connected to & display… --- ## [DIY GEM GEARBOX Refurb Procedure](https://community.electricforum.com/t/diy-gem-gearbox-refurb-procedure/5584)
**Author:** [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Replies:** 4\ **Last updated:** [July 14, 2018, 4:13pm UTC](https://community.electricforum.com/t/diy-gem-gearbox-refurb-procedure/5584 "2018-07-14T16:13:34Z")
DANA - SPICER - SCHAFFER H12 E GEAR BOX REFURBISH Don’t know if this is the proper procedure but it’s the way I do it. Remove from car and drain oil and clean exterior. Secure upside down in a vise Remove cover Remo… --- ## [DIY GEM Late model code 11](https://community.electricforum.com/t/diy-gem-late-model-code-11/5373)
**Author:** [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Replies:** 10\ **Last updated:** [May 15, 2018, 10:16am UTC](https://community.electricforum.com/t/diy-gem-late-model-code-11/5373 "2018-05-15T10:16:21Z")
DIY ARTICLE LATE MODEL CODE 11 Submitted by piper 247 If your late model GEM is giving you a code 11 and you don’t have anything disturbing throttle pedal travel and all connections are clean. You may have a defe… --- ## [2001 Gem not moving ](https://community.electricforum.com/t/2001-gem-not-moving/13709)
**Author:** [@Barry\_AnioMina](https://community.electricforum.com/u/Barry_AnioMina)\ **Replies:** 1\ **Last updated:** [May 10, 2018, 5:41am UTC](https://community.electricforum.com/t/2001-gem-not-moving/13709 "2018-05-10T05:41:14Z")
Hello. And thanks for having me here. I have few questions to ask about a 2001 Gem e825. The battery is charging but the car won’t move forward or back. What is the problem. Help. Thanks --- ## [Making keyfob activate toy](https://community.electricforum.com/t/making-keyfob-activate-toy/13180)
**Author:** [@Jayfaas](https://community.electricforum.com/u/Jayfaas)\ **Replies:** 3\ **Last updated:** [December 27, 2017, 5:24am UTC](https://community.electricforum.com/t/making-keyfob-activate-toy/13180 "2017-12-27T05:24:09Z")
I currently have a little seahorse that lights up and plays music when pressed. It plays for about 5 minutes and then stops. Im wondering if there is a remote or keyfob that I could rig to the toy so I can activate it … --- ## [Congrats, The self-built electric vehicle is done!](https://community.electricforum.com/t/congrats-the-self-built-electric-vehicle-is-done/12702)
**Author:** [@zakzak](https://community.electricforum.com/u/zakzak)\ **Replies:** 1\ **Last updated:** [December 22, 2017, 3:06pm UTC](https://community.electricforum.com/t/congrats-the-self-built-electric-vehicle-is-done/12702 "2017-12-22T15:06:28Z")
This is a self-built solar electric vehicle. It can run 80 Km when charged for 8 hours and 25 Km when exposed to the sun for 5 hours. And it will be used to travel from India to the UK to test its capacity. This is the l… --- ## [New project 36v](https://community.electricforum.com/t/new-project-36v/12660)
**Author:** [@Inwo](https://community.electricforum.com/u/Inwo)\ **Replies:** 4\ **Last updated:** [August 6, 2017, 8:04pm UTC](https://community.electricforum.com/t/new-project-36v/12660 "2017-08-06T20:04:17Z")
\[tankpic4\]\[tankpic1\]\[tankpic\]\[tankpic3\] --- ## [About the Do It Yourself (DIY) category](https://community.electricforum.com/t/about-the-do-it-yourself-diy-category/273)
**Author:** [@system](https://community.electricforum.com/u/system)\ **Replies:** 0\ **Last updated:** [December 18, 2016, 2:56am UTC](https://community.electricforum.com/t/about-the-do-it-yourself-diy-category/273 "2016-12-18T02:56:57Z")
Discuss hacks, tricks, tips --- ## [Need info on EV Design](https://community.electricforum.com/t/need-info-on-ev-design/6345)
**Author:** [@LyokoElectronics](https://community.electricforum.com/u/LyokoElectronics)\ **Replies:** 0\ **Last updated:** [September 9, 2016, 1:52pm UTC](https://community.electricforum.com/t/need-info-on-ev-design/6345 "2016-09-09T13:52:50Z")
So im new to this whole EV idea but I've been interested in he idea of finding an alternative source of energy for some time. So I was wondering if anyone could give me a diagram or some type of detailed chart showing ho… --- ## [Jeep Wrangler](https://community.electricforum.com/t/jeep-wrangler/6255)
**Author:** [@John\_norbeck](https://community.electricforum.com/u/John_norbeck)\ **Replies:** 2\ **Last updated:** [July 24, 2016, 9:58am UTC](https://community.electricforum.com/t/jeep-wrangler/6255 "2016-07-24T09:58:45Z")
Last summer I built an electric 1998 Jeep Wrangler some of the specs are, HPEVS ac 75 motor, 1238 Curtis controller, 36 lithium ion 180ah CALB cells, original drive train aka 4wd. I have a little over 10,000 miles on it … --- ## [Diy front wheel cylinder rebuild](https://community.electricforum.com/t/diy-front-wheel-cylinder-rebuild/6020)
**Author:** [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Replies:** 0\ **Last updated:** [May 6, 2016, 8:44pm UTC](https://community.electricforum.com/t/diy-front-wheel-cylinder-rebuild/6020 "2016-05-06T20:44:08Z")
GEM FRONT BRAKE CYLINDER REBUILD. Gem front wheel cylinders aren't always available. The existing cylinders can be rebuilt. The existing Cylinder will have to be honed until there are no scratches or marks in the b… --- ## [Porsche 911 EV on eBay](https://community.electricforum.com/t/porsche-911-ev-on-ebay/5991)
**Author:** [@Sparkee](https://community.electricforum.com/u/Sparkee)\ **Replies:** 0\ **Last updated:** [April 27, 2016, 11:31am UTC](https://community.electricforum.com/t/porsche-911-ev-on-ebay/5991 "2016-04-27T11:31:48Z")
Not mine, but intriguing... eBay item 272219909469 URL: http://www.ebay.com/itm/Porsche-911-Targa-/272219909469?forcerrptr=true&hash=item3f61922d5d:g:6usAAOSwJSJXGXRz&item=272219909469 Shouldn't LiFePO4 batteries la… --- ## [DIY Gear Box Refurb Parts](https://community.electricforum.com/t/diy-gear-box-refurb-parts/5585)
**Author:** [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Replies:** 4\ **Last updated:** [January 4, 2016, 7:18pm UTC](https://community.electricforum.com/t/diy-gear-box-refurb-parts/5585 "2016-01-04T19:18:49Z")
Below are 2 parts lists for refurbing GEM Gear Boxes. Parts required to refurbish 8.9 and 10.35 Gear Boxes with New Seal Type input shaft assembly (2) Axle bearing 6004 2RS 20x42x12 MM $2.44 ea (2) Differential carrie… --- ## [Dumb question but why can't you](https://community.electricforum.com/t/dumb-question-but-why-cant-you/840)
**Author:** [@machinist.212](https://community.electricforum.com/u/machinist.212)\ **Replies:** 4\ **Last updated:** [November 13, 2015, 12:46pm UTC](https://community.electricforum.com/t/dumb-question-but-why-cant-you/840 "2015-11-13T12:46:00Z")
Sorry if this is a lame question but in a case like in a small pick up truck for example , why cant you just mount the electric motor directly to the rear differential and not use the transmission or driveshaft ? --- ## [Starting a generator with its PMG](https://community.electricforum.com/t/starting-a-generator-with-its-pmg/5439)
**Author:** [@nevbuggie](https://community.electricforum.com/u/nevbuggie)\ **Replies:** 0\ **Last updated:** [October 14, 2015, 7:22pm UTC](https://community.electricforum.com/t/starting-a-generator-with-its-pmg/5439 "2015-10-14T19:22:57Z")
Greetings all, Have made great progress on building a hybrid 4x4 utility vehicle, solar gasoline and plugin are now all working thanks to the Magnum inverter charger. I want to add electric start to my Honda DCX3000 … --- ## [DIY GearboxMounting](https://community.electricforum.com/t/diy-gearboxmounting/5385)
**Author:** [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Replies:** 0\ **Last updated:** [October 3, 2015, 12:28am UTC](https://community.electricforum.com/t/diy-gearboxmounting/5385 "2015-10-03T00:28:53Z")
On pre 2002 Gems the threads on the gearbox mounting bolts sometimes strip from over tightening. The fix is to drill the hole all the way thru the housing with a 17/64 drill and retap the hole full length. Then use lon… --- ## [Electric Motorcycle, Sidecar= milage extender?](https://community.electricforum.com/t/electric-motorcycle-sidecar-milage-extender/3712)
**Author:** [@Green\_Primus](https://community.electricforum.com/u/Green_Primus)\ **Replies:** 5\ **Last updated:** [September 12, 2015, 2:05pm UTC](https://community.electricforum.com/t/electric-motorcycle-sidecar-milage-extender/3712 "2015-09-12T14:05:36Z")
Was out today and saw a motorcycle with a sidecar.. a sadly lesser seen cycle accessory! And this got me thinking.. If you were to convert a older style motorcycle to an EV, could a sidecar be used for battery storage?… --- ## [Help: EVSE RS+ (PLUS)](https://community.electricforum.com/t/help-evse-rs-plus/5220)
**Author:** [@mgatt](https://community.electricforum.com/u/mgatt)\ **Replies:** 0\ **Last updated:** [August 23, 2015, 6:01am UTC](https://community.electricforum.com/t/help-evse-rs-plus/5220 "2015-08-23T06:01:41Z")
Hello, I just bought a brand new Aerovironment Level 2 charging station. After mounting it and plugging it in, the only light that comes on is the first one: Power present. The self-test does not do anything, nor does pl… --- ## [New hope for Solar Cells in EV's](https://community.electricforum.com/t/new-hope-for-solar-cells-in-evs/435)
**Author:** [@Lectrol](https://community.electricforum.com/u/Lectrol)\ **Replies:** 8\ **Last updated:** [August 17, 2015, 8:08pm UTC](https://community.electricforum.com/t/new-hope-for-solar-cells-in-evs/435 "2015-08-17T20:08:20Z")
Before I started out to build my EV, i considered using PV panels, or Photovoltaic panels on my car. After punching the numbers, the idea was shot down by very unsubstantial numbers. Just recently i did some more researc… --- ## [Adding 4wd to a van](https://community.electricforum.com/t/adding-4wd-to-a-van/4922)
**Author:** [@pengyou](https://community.electricforum.com/u/pengyou)\ **Replies:** 1\ **Last updated:** [April 26, 2015, 3:25pm UTC](https://community.electricforum.com/t/adding-4wd-to-a-van/4922 "2015-04-26T15:25:09Z")
Is it possible/feasible to add 4wd to a van by adding an electric motor to each of the front wheels? My idea (my explanation is a MASSIVE oversimplification) is to add a half shaft to each of the front wheels, and then … --- ## [Reverse engineering (pinning out) a EV controller?](https://community.electricforum.com/t/reverse-engineering-pinning-out-a-ev-controller/4911)
**Author:** [@rayhaque](https://community.electricforum.com/u/rayhaque)\ **Replies:** 4\ **Last updated:** [April 23, 2015, 1:42pm UTC](https://community.electricforum.com/t/reverse-engineering-pinning-out-a-ev-controller/4911 "2015-04-23T13:42:19Z")
I have a new controller in the mail to replace a no-name (and no documentation) controller that presently runs my EV. While some of the wire colors are fairly easy to guess - others are baffling me. Does anyone know w… --- ## [Does it pay to do DIY conversion](https://community.electricforum.com/t/does-it-pay-to-do-diy-conversion/4885)
**Author:** [@zibko](https://community.electricforum.com/u/zibko)\ **Replies:** 4\ **Last updated:** [April 21, 2015, 7:41pm UTC](https://community.electricforum.com/t/does-it-pay-to-do-diy-conversion/4885 "2015-04-21T19:41:41Z")
I wonder if it does make sense to do DIY conversion today? [Previous page](https://community.electricforum.com/c/electric-vehicle-diy-forum/147.md) [Next page](https://community.electricforum.com/c/electric-vehicle-diy-forum/147.md?page=2)