# Magic Magnet

**URL:** <https://community.electricforum.com/t/magic-magnet/21833>\
**Category:** GEM Forum\
**Created:** [July 7, 2021, 5:09pm UTC](https://community.electricforum.com/t/magic-magnet/21833 "2021-07-07T17:09:24Z")\
**Posts on this page:** 20\
**Page:** 5

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**Author:** ![Soonermark](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@Soonermark](https://community.electricforum.com/u/Soonermark)\
**Post date:** [September 29, 2025, 9:24pm UTC](https://community.electricforum.com/t/magic-magnet/21833/82 "2025-09-29T21:24:09Z")

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Yeah the cheaper lithiums were perfect for me as my town is 1 sq mile. My batteries went bad so I upgraded. It might be 2 weeks between charges for me given how few miles I drive even though I drive it every day

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**Author:** ![Cformony](https://avatars.discourse-cdn.com/v4/letter/c/b19c9b/32.png) [@Cformony](https://community.electricforum.com/u/Cformony)\
**Post date:** [September 29, 2025, 9:33pm UTC](https://community.electricforum.com/t/magic-magnet/21833/83 "2025-09-29T21:33:27Z")

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Thanks.. it really is good information.

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**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:** [October 1, 2025, 8:27pm UTC](https://community.electricforum.com/t/magic-magnet/21833/84 "2025-10-01T20:27:20Z")

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> [@AssyRequired](#):
>
> And you are only allowed to use 50~60% of that before you start to do harm to your WLA Trojans. Your 150s are actually 75s

…and, for the privilege of having 40% of your electrons unwilling to earn their keep, you are totting around about 400 pounds of next years secret flavor enhancer for imported Chinese dog food.

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**Author:** ![Soonermark](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@Soonermark](https://community.electricforum.com/u/Soonermark)\
**Post date:** [October 5, 2025, 11:37am UTC](https://community.electricforum.com/t/magic-magnet/21833/85 "2025-10-05T11:37:59Z")

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Sorry I haven’t had another update. I painted my gem and somehow caused an electrical problem. I keep blowing the display fuse. So it hasn’t been drivable. I am going to again try to find the wire that is causing it today.

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**Author:** ![Soonermark](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@Soonermark](https://community.electricforum.com/u/Soonermark)\
**Post date:** [October 7, 2025, 10:52am UTC](https://community.electricforum.com/t/magic-magnet/21833/86 "2025-10-07T10:52:32Z")

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Update. I’m at 18.2 miles now with 56% charge left. But I accidentally left the lights on all night last night.

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**Author:** ![Cformony](https://avatars.discourse-cdn.com/v4/letter/c/b19c9b/32.png) [@Cformony](https://community.electricforum.com/u/Cformony)\
**Post date:** [October 7, 2025, 11:17pm UTC](https://community.electricforum.com/t/magic-magnet/21833/87 "2025-10-07T23:17:14Z")

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Ok, kewl… How hard did you run it? So you might think to expect 40 + Mike range ??

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**Author:** ![Soonermark](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@Soonermark](https://community.electricforum.com/u/Soonermark)\
**Post date:** [October 8, 2025, 1:04pm UTC](https://community.electricforum.com/t/magic-magnet/21833/88 "2025-10-08T13:04:49Z")

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Now at 29% and 27.7 miles. I have a lead foot and do 25 everywhere

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**Author:** ![Cformony](https://avatars.discourse-cdn.com/v4/letter/c/b19c9b/32.png) [@Cformony](https://community.electricforum.com/u/Cformony)\
**Post date:** [October 9, 2025, 9:35pm UTC](https://community.electricforum.com/t/magic-magnet/21833/89 "2025-10-09T21:35:56Z")

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Ok…. So if I follow you, we are looking at about a 30 Mile range under “get out of my way” conditions with the lights on. That’s about what I expected. Might be interesting to see how that changes as the battery gets older . If you notice anything else about the battery that we might be interested in, please feel to post. Thanks

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**Author:** ![Think02](https://avatars.discourse-cdn.com/v4/letter/t/ea5d25/32.png) [@Think02](https://community.electricforum.com/u/Think02)\
**Post date:** [June 21, 2026, 1:16pm UTC](https://community.electricforum.com/t/magic-magnet/21833/90 "2026-06-21T13:16:06Z")

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I have a Ford Think and interested in the magnet, I just installed lithium and running 15” wheels, topping out at 28 mph.

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**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:** [June 21, 2026, 8:37pm UTC](https://community.electricforum.com/t/magic-magnet/21833/91 "2026-06-21T20:37:21Z")

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I don’t have feedback from Th!nk users. It may or may not be useful. Some cars will run without speed sensor. The only advantage then would be restoring speedometer function, albiet not accurately.

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**Author:** ![Think02](https://avatars.discourse-cdn.com/v4/letter/t/ea5d25/32.png) [@Think02](https://community.electricforum.com/u/Think02)\
**Post date:** [June 21, 2026, 9:18pm UTC](https://community.electricforum.com/t/magic-magnet/21833/92 "2026-06-21T21:18:08Z")

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My speedometer on the cart isn’t working properly, showing 8mph at top speed. I’ve been using phone app. What would you suggest to get 5+ more mph?

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**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:** [June 22, 2026, 12:56am UTC](https://community.electricforum.com/t/magic-magnet/21833/93 "2026-06-22T00:56:21Z")

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Fix speedometer first.

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**Author:** ![AssyRequired](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/assyrequired/32/7621_2.png) [@AssyRequired](https://community.electricforum.com/u/AssyRequired)\
**Post date:** [June 22, 2026, 12:53pm UTC](https://community.electricforum.com/t/magic-magnet/21833/94 "2026-06-22T12:53:43Z")

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In theory, if speedo (and controller) believes the car is only going 8 mph and you are actually going 28(gps), then the controller is not limiting speed. There is something else holding your car back.

You say you are running 15 in tall wheels? (total??)  
That is probably your limit right there. My calculations put the motor at 6500 rpm. (given the gearbox ratio of 10.3)

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<div class="post-metadata">

**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:** [June 22, 2026, 7:36pm UTC](https://community.electricforum.com/t/magic-magnet/21833/95 "2026-06-22T19:36:51Z")

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If your thunk is “surgung” at its maximum speed, then you are being held back by the “Maximum Oversoeed” parameter in the E2 controller. You may be able to go faster by raising that parameter or possibly using an MM.

If your thunk runs smooth at top speed, thats all your drive tran will do. You will need higher voltage to the motor, taller tires or taller gears.

For s Think, taking the stock 4hp GE motor over 6k rpm may be risky. Not sure what bearings were used in it. D&D Systems has a 6.5 or 7hp think motor that can spin redlined at about 8500 rpm

That’s about the safe limit for the spicer gearbix stock bearings too.

A note on programming the controller in a think, it is an E2 not a T2. Do not use the GEM T2 mdb file. There are subtle differenxes in the controller. Parameter order is different. I should have a cooy of the E2 file somewhere. PM me if you need it.

@AssyRequired iirc, thinks had 10.0:1 gearboxes. Its a minor difference, but remember they were RWD.

The 4hp GE motor was slighty didferent than the short ge that Gem used. In not sure if they are cross compatable.

And now, after all this talk about the Da Thunk, its time for a musical interlude of Da Funk from our sponsors. Everyone please sing along. You know the words…

![](https://img.youtube.com/vi/PwILkY9gRrc/maxresdefault.jpg)https://www.youtube.com/embed/PwILkY9gRrc?feature=oembed&wmode=opaque&list=RDPwILkY9gRrc

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<div class="post-metadata">

**Author:** ![keithtroutman](https://avatars.discourse-cdn.com/v4/letter/k/eb8c5e/32.png) [@keithtroutman](https://community.electricforum.com/u/keithtroutman)\
**Post date:** [July 25, 2026, 7:29pm UTC](https://community.electricforum.com/t/magic-magnet/21833/96 "2026-07-25T19:29:39Z")

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Good afternoon Dave, I would like to purchase a magic magnet

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**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:** [July 26, 2026, 3:28pm UTC](https://community.electricforum.com/t/magic-magnet/21833/97 "2026-07-26T15:28:12Z")

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$150 to [PayPal.Me](https://paypal.me/INWO?locale.x=en_US&country.x=US)  
Thank you,  
Dave

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**Author:** ![keithtroutman](https://avatars.discourse-cdn.com/v4/letter/k/eb8c5e/32.png) [@keithtroutman](https://community.electricforum.com/u/keithtroutman)\
**Post date:** [July 27, 2026, 6:52pm UTC](https://community.electricforum.com/t/magic-magnet/21833/98 "2026-07-27T18:52:34Z")

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Sent pay pal & info 👌

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**Author:** ![Dward](https://avatars.discourse-cdn.com/v4/letter/d/f14d63/32.png) [@Dward](https://community.electricforum.com/u/Dward)\
**Post date:** [August 25, 2026, 5:19pm UTC](https://community.electricforum.com/t/magic-magnet/21833/99 "2026-08-25T17:19:34Z")

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Good Morning Dave, New to the Forum. I just purchase a 2002 GEM-4 with new Lithium Batteries. I would like to Purchase the Magic Magnet from you for this car. Please let me the cost and how the best way to pay you would be as well as any information you need from me for shipping or what have you.

Thank you in advance.

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**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:** [August 25, 2026, 5:45pm UTC](https://community.electricforum.com/t/magic-magnet/21833/100 "2026-08-25T17:45:02Z")

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> [@Inwo](#):
>
> $150 to [PayPal.Me](https://paypal.me/INWO?locale.x=en_US&country.x=US)  
> Thank you,  
> Dave

Paypal $150  
tnx DAve

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<div class="post-metadata">

**Author:** ![Dward](https://avatars.discourse-cdn.com/v4/letter/d/f14d63/32.png) [@Dward](https://community.electricforum.com/u/Dward)\
**Post date:** [August 25, 2026, 7:12pm UTC](https://community.electricforum.com/t/magic-magnet/21833/101 "2026-08-25T19:12:37Z")

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Thank you, the wife has PayPal, we will get done and sent you along with the shipping address

Thank you

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