# More speed please **URL:** \ **Category:** GEM Forum\ **Created:** [February 14, 2020, 5:15pm UTC](https://community.electricforum.com/t/more-speed-please/18095 "2020-02-14T17:15:01Z")\ **Posts on this page:** 19\ **Page:** 1
**Author:** ![drazzi](https://avatars.discourse-cdn.com/v4/letter/d/a698b9/32.png) [@drazzi](https://community.electricforum.com/u/drazzi)\ **Post date:** [February 14, 2020, 5:15pm UTC](https://community.electricforum.com/t/more-speed-please/18095/1 "2020-02-14T17:15:01Z")
Hi I have a 2006 E4 which I have totally renovated, I run 24" tires @ 40psi with a Ride for Fun 7.5 hp motor, new gel batteries, I can only run 32mph. Can anyone suggest what I can do to squeeze a few m’sph please ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [February 14, 2020, 5:17pm UTC](https://community.electricforum.com/t/more-speed-please/18095/2 "2020-02-14T17:17:39Z")
Does your speedometer read 1/2 speed? You’re not hitting a limit? That’s all the power it has? Adding another 12v will help. ---
**Author:** ![grantwest](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/grantwest/32/15_2.png) [@grantwest](https://community.electricforum.com/u/grantwest)\ **Post date:** [February 14, 2020, 5:19pm UTC](https://community.electricforum.com/t/more-speed-please/18095/3 "2020-02-14T17:19:05Z")
How much more speed are you looking for. What’s the Terrain like in your area do you have lots of hills or are you mostly in the flats. The reason I ask is because you could put a higher gear ratio in there if you’re in the flats but it could hurt you if you’re in the hills ---
**Author:** ![drazzi](https://avatars.discourse-cdn.com/v4/letter/d/a698b9/32.png) [@drazzi](https://community.electricforum.com/u/drazzi)\ **Post date:** [February 15, 2020, 1:54pm UTC](https://community.electricforum.com/t/more-speed-please/18095/4 "2020-02-15T13:54:45Z")
Hi Grant, thanks for responding, I live in Florida so flat as a pool table, where would I buy the higher gear and what ratio would it be? Regards Barry ---
**Author:** ![drazzi](https://avatars.discourse-cdn.com/v4/letter/d/a698b9/32.png) [@drazzi](https://community.electricforum.com/u/drazzi)\ **Post date:** [February 15, 2020, 1:57pm UTC](https://community.electricforum.com/t/more-speed-please/18095/5 "2020-02-15T13:57:25Z")
Hi, thanks for responding, I have not re-calibrated the speedo so yes it reads 1/2 speed but I use a speedometer app which is very accurate. Where and how would I wire another battery? Regards Barry ---
**Author:** ![JarJarJava](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jarjarjava/32/15158_2.png) [@JarJarJava](https://community.electricforum.com/u/JarJarJava)\ **Post date:** [February 15, 2020, 3:43pm UTC](https://community.electricforum.com/t/more-speed-please/18095/6 "2020-02-15T15:43:53Z")
Assuming you are stuck with the brand new gel batteries you mentioned in the first post, you can add a 7th gel battery w/ Rodney’s hack or, if Dave (@Inwo) is willing to build another one, you could go with an auxiliary LiFePo4 pack like I did. They both achieve the same end, the wiring is different though. I can hit 40-41 mph with a 4s pack in an '02 longback w/ 6 lead batteries for the main pack. You should have a T4 controller, which can handle more volts and higher amps than the T2 in mine, so you could probably get away with a 5s or maybe even a 6s (Dave or someone who knows more about that controller could help you there). anyway, here are the two threads: Rodney’s > [@84 Volt 2 Seater](https://community.electricforum.com/t/84-volt-2-seater/15470): > > A few weeks ago I stated that I intended to add a 7th battery to my 2002 two seater. This is the result. Three/four miles of extra range. Lots of acceleration. 42 MPH but limited to 38. The last 4 MPH EATS!!! range, True 22 miles range on turf mode flat ground.@ about 30 MPH TECHNICAL 2002 2 seater 8.9 gearbox 21" diameter fat tires on 10 inch rims (205 65 10) 7.5 RFF Black Motor (My Mods) INWO Spoof. (I asked INWO to make me a modified Spoof to allow 2 more volts thru to better balance contr… Mine > [@LiFePo4 "7th battery" on a lead bottom GEM](https://community.electricforum.com/t/lifepo4-7th-battery-on-a-lead-bottom-gem/16591): > > This was an idea that Dave @Inwo came up with at some point in the past and I was the first ̶i̶d̶i̶o̶t̶ scientific pioneer willing to test it… … Adding an extra battery after the main contactor, so that only the high amperage terminals on the controller see the extra voltage. Translation, no voltage shunt needed for control power and that somehow changes how the controller sees things and the car performs and I’m gonna let Dave explain that part because he’s an electronics genius and I just f… ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [February 15, 2020, 4:19pm UTC](https://community.electricforum.com/t/more-speed-please/18095/7 "2020-02-15T16:19:20Z")
The T4 can handle 100v. I can sell a 4s 0r even 5s (16v) module. $50 per cell. So $200 or $250 plus shipping. I’ll throw in balance boards. $100 for a lithium charger programmed to 4s or 5s. I don’t like suggesting adding a battery, as I sell them, not use them. Better to wait for an independent review. ---
**Author:** ![JarJarJava](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jarjarjava/32/15158_2.png) [@JarJarJava](https://community.electricforum.com/u/JarJarJava)\ **Post date:** [February 15, 2020, 5:12pm UTC](https://community.electricforum.com/t/more-speed-please/18095/8 "2020-02-15T17:12:23Z")
I’ve had zero problems with the auxiliary 4s pack or the setup for the 8 months since I installed it. It’s been great. It’s been the best solution for me to being stuck with half a dozen boat anchors. I ended up setting my max speed limiter at 35 because the cauck was just too unstable at 40. 99-04’s aren’t known for their suspension, couple that with sketchy brakes (now upgraded) and stock tires with tall sidewalls, and it was an accident waiting to happen. ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [February 15, 2020, 6:02pm UTC](https://community.electricforum.com/t/more-speed-please/18095/9 "2020-02-15T18:02:40Z")
I’m nearly out of green cells until spring. I have one set of 5 x 5s and a few loose cells. I also have 4 new, from my new 2018 E2, polaris 120ah AGMs. Too heavy to be worth shipping. I’d be happy to get 1/2 retail $. Whatever that might be. ---
**Author:** ![RS\_E6](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/rs_e6/32/12308_2.png) [@RS\_E6](https://community.electricforum.com/u/RS_E6)\ **Post date:** [February 15, 2020, 6:47pm UTC](https://community.electricforum.com/t/more-speed-please/18095/10 "2020-02-15T18:47:04Z")
Where in Florida are you? With the 10.35 gears and lithium I can hit 40 MPH in my E6S w/ six adults in the car. ---
**Author:** ![drazzi](https://avatars.discourse-cdn.com/v4/letter/d/a698b9/32.png) [@drazzi](https://community.electricforum.com/u/drazzi)\ **Post date:** [February 15, 2020, 7:01pm UTC](https://community.electricforum.com/t/more-speed-please/18095/11 "2020-02-15T19:01:23Z")
I’m on Anna Maria Island, how about you? ---
**Author:** ![RS\_E6](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/rs_e6/32/12308_2.png) [@RS\_E6](https://community.electricforum.com/u/RS_E6)\ **Post date:** [February 15, 2020, 7:12pm UTC](https://community.electricforum.com/t/more-speed-please/18095/12 "2020-02-15T19:12:35Z")
Fort Lauderdale. @LithiumGods is a bit closer to you down in Naples. ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [February 16, 2020, 6:20pm UTC](https://community.electricforum.com/t/more-speed-please/18095/13 "2020-02-16T18:20:00Z")
Give me a call and I will help you out . 239 784 5690 mike ---
**Author:** ![Bert](https://avatars.discourse-cdn.com/v4/letter/b/9e8a1a/32.png) [@Bert](https://community.electricforum.com/u/Bert)\ **Post date:** [February 17, 2020, 4:07pm UTC](https://community.electricforum.com/t/more-speed-please/18095/14 "2020-02-17T16:07:47Z")
I had my GE control reprogrammed by Ride-4-Fun. they can set to 42 mph. Call and they will give you the cost. Great folks to work with. ---
**Author:** ![mikewired](https://avatars.discourse-cdn.com/v4/letter/m/c68b51/32.png) [@mikewired](https://community.electricforum.com/u/mikewired)\ **Post date:** [March 31, 2022, 2:06pm UTC](https://community.electricforum.com/t/more-speed-please/18095/15 "2022-03-31T14:06:03Z")
David, do you have any of these 4s packs? I just got a MM from you and shunt and want to add 7th battery. If I read this post correctly adding the 7th pack after the contactor the spoof pin is not needed? This is like my RC racing days all over again except they are ridable! ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [March 31, 2022, 2:49pm UTC](https://community.electricforum.com/t/more-speed-please/18095/16 "2022-03-31T14:49:06Z")
I just sent the last of them to @JarJarJava . He may help you out. Also a 12v lead battery works. ---
**Author:** ![JarJarJava](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jarjarjava/32/15158_2.png) [@JarJarJava](https://community.electricforum.com/u/JarJarJava)\ **Post date:** [March 31, 2022, 2:50pm UTC](https://community.electricforum.com/t/more-speed-please/18095/17 "2022-03-31T14:50:07Z")
> [@mikewired](#): > > If I read this post correctly adding the 7th pack after the contactor the spoof pin is not needed? Correct. I ran an 02 that way for about a year, at least 2k miles. There is a thread on it here with the wiring and build. Connections will look different from 05 on due to the introduction of the PSDM boards, but principle will remain the same ---
**Author:** ![JarJarJava](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jarjarjava/32/15158_2.png) [@JarJarJava](https://community.electricforum.com/u/JarJarJava)\ **Post date:** [March 31, 2022, 3:17pm UTC](https://community.electricforum.com/t/more-speed-please/18095/18 "2022-03-31T15:17:05Z")
Just saw your post Dave. Looks like we were posting at the same time. @mikewired as soon as I get a chance to sort through and test the cells to see which work I can possibly do something. One person ahead of you currently for a booster pack. @Inwo ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [April 1, 2022, 4:05am UTC](https://community.electricforum.com/t/more-speed-please/18095/19 "2022-04-01T04:05:50Z")
I have a few used sets