# 2005 gem top speed **URL:** \ **Category:** Uncategorized\ **Created:** [April 2, 2022, 11:10pm UTC](https://community.electricforum.com/t/2005-gem-top-speed/23865 "2022-04-02T23:10:18Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [April 2, 2022, 11:10pm UTC](https://community.electricforum.com/t/2005-gem-top-speed/23865/1 "2022-04-02T23:10:18Z")
2005 and 2006 have T3 controllers that DONT have a FUNCTION 7 (minimum field current) setting. It is fixed fixed internally in the controller. You have to cheat tire size and gear ratio settings along with a magic magnet to get over 25 MPH. Blue Motors and the Short AMD 7.5 (if your lucky enough to have one) can be coaxed to 34 and 37 MPH respectively with 21 inch tires and 8.9 ratio gear box. (2 seater) GE and AMD fan motors will give you about 29 tops. I’m told 84 volts helps. Cure is T4 conversions. ---
**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:** [April 3, 2022, 2:12am UTC](https://community.electricforum.com/t/2005-gem-top-speed/23865/2 "2022-04-03T02:12:52Z")
Is this an answer to a specific inquiry? I believe field current can be lowered with a hardware fix. We may have discussed this before, but I never had a test mule. Some trial and error required. Connect resistance that is about 10% of field resistance in parallel to field. This is a known method of speed control for shunt motors. In use previous to sepex control. ---
**Author:** ![Gem\_e2](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gem_e2/32/1849_2.png) [@Gem\_e2](https://community.electricforum.com/u/Gem_e2)\ **Post date:** [April 3, 2022, 8:58am UTC](https://community.electricforum.com/t/2005-gem-top-speed/23865/3 "2022-04-03T08:58:05Z")
hi here are some settings to try with > [@Magic Magnet review thread "price increase"](https://community.electricforum.com/t/magic-magnet-review-thread-price-increase/5783/27): > > 40 mph settings: Copied from above! Function Name : GEMT3Update2 ControlType : 353T3 SoftwareID : GL RevisionID : 7L Extended RevisionID : Setting Details F 1 MPH Scaling/Not Used 0 2 Creep Speed 0 3 Controlled Acceleration 2 4 Max Armature Current Limit 255 5 Plugging Current Limit 50 6 Armature Deceleration Rate 50 7 Minimum Field Current 1 8 Maximum Field Current 255 9 Regen Armature Current 200 10 Regen Maximum Field Current 170 11 Turf Speed Limit 50 12 Reverse Speed Limit … but you need this software in your T3 controller SoftwareID : GL RevisionID : 7L ---
**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:** [April 3, 2022, 11:57am UTC](https://community.electricforum.com/t/2005-gem-top-speed/23865/4 "2022-04-03T11:57:45Z")
I have not had my hands on a T3. ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [April 3, 2022, 7:41pm UTC](https://community.electricforum.com/t/2005-gem-top-speed/23865/5 "2022-04-03T19:41:43Z")
You have been truly blessed. You need to say a prayer of thanks. They are true POS. ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [April 3, 2022, 7:46pm UTC](https://community.electricforum.com/t/2005-gem-top-speed/23865/6 "2022-04-03T19:46:55Z")
e went thru this about 4 years ago. You were going to try a resistance pack or some other. Project died. ---
**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:** [April 4, 2022, 12:58pm UTC](https://community.electricforum.com/t/2005-gem-top-speed/23865/7 "2022-04-04T12:58:32Z")
> [@Old\_Houseboater](#): > > You were going to try a resistance pack or some other Yes, never found someone to test at the time.