# Not going 25 mph **URL:** \ **Category:** GEM Forum\ **Created:** [November 16, 2016, 10:16am UTC](https://community.electricforum.com/t/not-going-25-mph/6486 "2016-11-16T10:16:50Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![Als\_gem\_cart](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Als\_gem\_cart](https://community.electricforum.com/u/Als_gem_cart)\ **Post date:** [November 16, 2016, 10:16am UTC](https://community.electricforum.com/t/not-going-25-mph/6486/1 "2016-11-16T10:16:50Z")
I had my speed controller rebuilt, and my speedometer shows I’m going 25 but are radar in are parked shows only 16 - 17 mph. I have 205/50/10" tired on my 2000 gem , please help. Could they had rebuild the speed controller wrong. Thanks Al. ---
**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:** [November 16, 2016, 10:22am UTC](https://community.electricforum.com/t/not-going-25-mph/6486/2 "2016-11-16T10:22:18Z")
How fast in turf mode? ---
**Author:** ![Als\_gem\_cart](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Als\_gem\_cart](https://community.electricforum.com/u/Als_gem_cart)\ **Post date:** [November 16, 2016, 10:24am UTC](https://community.electricforum.com/t/not-going-25-mph/6486/3 "2016-11-16T10:24:25Z")
> [@Inwo;33584](#): > > How fast in turf mode? I never check that on the street I can do that now , I will post asap when I get back in the house ---
**Author:** ![Als\_gem\_cart](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Als\_gem\_cart](https://community.electricforum.com/u/Als_gem_cart)\ **Post date:** [November 16, 2016, 10:40am UTC](https://community.electricforum.com/t/not-going-25-mph/6486/4 "2016-11-16T10:40:01Z")
> [@Als gem cart;33585](#): > > I never check that on the street I can do that now , I will post asap when I get back in the house Ok I couldn’t get a reading on the radar maybe because I was going slow. The speedometer showed that I was going 17 miles per hour in tiff mode and 27 mph in road mode. ? ---
**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:** [November 16, 2016, 11:03am UTC](https://community.electricforum.com/t/not-going-25-mph/6486/5 "2016-11-16T11:03:13Z")
Ok, that works then. Must have the controller programmed for the wrong ratio. Do you have the handset? Did it read correct before? ---
**Author:** ![Als\_gem\_cart](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Als\_gem\_cart](https://community.electricforum.com/u/Als_gem_cart)\ **Post date:** [November 16, 2016, 11:13am UTC](https://community.electricforum.com/t/not-going-25-mph/6486/6 "2016-11-16T11:13:33Z")
I don’t have a handset, and when I bought it it needed to be rebuilt because the cart didn’t move after the new batteies in it. ---
**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:** [November 16, 2016, 11:39am UTC](https://community.electricforum.com/t/not-going-25-mph/6486/7 "2016-11-16T11:39:05Z")
See what Rodney say’s I guess. ---
**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:** [November 16, 2016, 11:50am UTC](https://community.electricforum.com/t/not-going-25-mph/6486/8 "2016-11-16T11:50:57Z")
If you don’t want to send it back, or can’t get it reprogrammed, I have something new you can try. ---
**Author:** ![Als\_gem\_cart](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Als\_gem\_cart](https://community.electricforum.com/u/Als_gem_cart)\ **Post date:** [November 16, 2016, 6:06pm UTC](https://community.electricforum.com/t/not-going-25-mph/6486/9 "2016-11-16T18:06:06Z")
> [@Inwo;33591](#): > > If you don’t want to send it back, or can’t get it reprogrammed, I have something new you can try. I’m going to talk to the guy , that sent it in and see what he what’s to do. I will let you know. ---
**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:** [November 16, 2016, 6:44pm UTC](https://community.electricforum.com/t/not-going-25-mph/6486/10 "2016-11-16T18:44:32Z")
Its probably programmed for 12 inch rims with 21 1/2 inch diameter tires or bigger. In any event program needs to reflect installed gear box and tire diameter. ---
**Author:** ![Als\_gem\_cart](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Als\_gem\_cart](https://community.electricforum.com/u/Als_gem_cart)\ **Post date:** [November 16, 2016, 6:47pm UTC](https://community.electricforum.com/t/not-going-25-mph/6486/11 "2016-11-16T18:47:54Z")
> [@OLD HOUSEBOATER;33593](#): > > Its probably programmed for 12 inch rims with 21 inch diameter tires i will find out tomorrow, I hope they have records how the company programmed it. ---
**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:** [November 16, 2016, 7:39pm UTC](https://community.electricforum.com/t/not-going-25-mph/6486/12 "2016-11-16T19:39:48Z")
If not, I can loan you a handset, and Rodney can tell you what to punch in. ---
**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:** [November 16, 2016, 7:45pm UTC](https://community.electricforum.com/t/not-going-25-mph/6486/13 "2016-11-16T19:45:37Z")
Need to know: Year, Model, Controller model #, Gear Box ratio, motor make/model, and tire diameter. Stock magnet or performance? ---
**Author:** ![wrascal](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/wrascal/32/1813_2.png) [@wrascal](https://community.electricforum.com/u/wrascal)\ **Post date:** [November 17, 2016, 2:49pm UTC](https://community.electricforum.com/t/not-going-25-mph/6486/14 "2016-11-17T14:49:36Z")
You could use a GPS to gauge speed instead of radar. ``` Russ ``` ---
**Author:** ![CaliKarts](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/calikarts/32/1098_2.png) [@CaliKarts](https://community.electricforum.com/u/CaliKarts)\ **Post date:** [May 7, 2017, 11:04am UTC](https://community.electricforum.com/t/not-going-25-mph/6486/15 "2017-05-07T11:04:46Z")
The best is just getting a gps device in your Gem with that it can tell you the actually speed ---
**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:** [May 7, 2017, 2:35pm UTC](https://community.electricforum.com/t/not-going-25-mph/6486/16 "2017-05-07T14:35:18Z")
25 BUCKS ON EBAY FOR GPS SPEEDO Rodney