# Available gem motors

**URL:** <https://community.electricforum.com/t/available-gem-motors/20686>\
**Category:** GEM Forum\
**Created:** [January 23, 2021, 1:36am UTC](https://community.electricforum.com/t/available-gem-motors/20686 "2021-01-23T01:36:36Z")\
**Posts on this page:** 20\
**Page:** 1

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**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:** [January 23, 2021, 1:36am UTC](https://community.electricforum.com/t/available-gem-motors/20686/1 "2021-01-23T01:36:36Z")

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AVAILABLE GEM MOTORS  
(1) ADVANCE STOCK 5HP MOTOR $200 plus shipping  
(3) ADVAMCE 7.5 HP FAN MOTOR $425 each plus shipping  
History: These are the most powerful motors installed in  
GEM cars. They got a bad reputation for stuck brush failure. The reason was AMD manufacturing clearances were too tight. This batch of motors was given my brush clearance procedure and all have had the commutators machined. They will now live 5 years with out further service requirements. If you are in commercial or livery service or live in the hills this is the motor for you.  
Rodney

[rodneyadiehl@aol.com](mailto:rodneyadiehl@aol.com)

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**Author:** ![rvn68ak](https://avatars.discourse-cdn.com/v4/letter/r/278dde/32.png) [@rvn68ak](https://community.electricforum.com/u/rvn68ak)\
**Post date:** [January 23, 2021, 12:55pm UTC](https://community.electricforum.com/t/available-gem-motors/20686/2 "2021-01-23T12:55:44Z")

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Hi Rodney,  
I just picked up a 2000 E2 with 200 miles on it. The cart is like brand new. My only complaint is a lack of power going up some of the hilly streets in North Georgia,  
My question is… will the T1 controller handle the AMD motor?

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**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:** [January 23, 2021, 1:17pm UTC](https://community.electricforum.com/t/available-gem-motors/20686/3 "2021-01-23T13:17:02Z")

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amd motor wont fir in pre 2005 without suspension mods. R4F would be better than the stock one and lithium would be best of all.

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**Author:** ![rvn68ak](https://avatars.discourse-cdn.com/v4/letter/r/278dde/32.png) [@rvn68ak](https://community.electricforum.com/u/rvn68ak)\
**Post date:** [January 23, 2021, 1:20pm UTC](https://community.electricforum.com/t/available-gem-motors/20686/4 "2021-01-23T13:20:05Z")

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Thanks for the reply - Do you think that the RFF motor would show a increased hill climb ability as compared to the stock motor? and would the T1 controller handle the current ? I an really interested in a lithium conversion as well.

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**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:** [January 23, 2021, 1:28pm UTC](https://community.electricforum.com/t/available-gem-motors/20686/5 "2021-01-23T13:28:34Z")

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Early Gems are not my specialty but I would be pretty confident that the T1 would be fine. the controller controls the current output. Do you know what motor you have in it? post a picture. It could be a 3.5hp motor instead of a 5hp.

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**Author:** ![rvn68ak](https://avatars.discourse-cdn.com/v4/letter/r/278dde/32.png) [@rvn68ak](https://community.electricforum.com/u/rvn68ak)\
**Post date:** [January 23, 2021, 2:11pm UTC](https://community.electricforum.com/t/available-gem-motors/20686/6 "2021-01-23T14:11:40Z")

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It is a 3.5 HP motor

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**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:** [January 23, 2021, 4:15pm UTC](https://community.electricforum.com/t/available-gem-motors/20686/7 "2021-01-23T16:15:01Z")

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The T1 will work with the AMD however the AMD wont fit . Suggest The RFF Blue motor.

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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:** [January 23, 2021, 5:38pm UTC](https://community.electricforum.com/t/available-gem-motors/20686/8 "2021-01-23T17:38:37Z")

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Is there room for a new Gem motor? 10" long. About 25 peak hp.

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**Author:** ![rvn68ak](https://avatars.discourse-cdn.com/v4/letter/r/278dde/32.png) [@rvn68ak](https://community.electricforum.com/u/rvn68ak)\
**Post date:** [January 23, 2021, 10:11pm UTC](https://community.electricforum.com/t/available-gem-motors/20686/9 "2021-01-23T22:11:10Z")

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25Hp vs 3.5 Hp ??? How is this possible?

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<div class="post-metadata">

**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:** [January 23, 2021, 10:42pm UTC](https://community.electricforum.com/t/available-gem-motors/20686/10 "2021-01-23T22:42:52Z")

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Diameter - (RPM -Torque Curve) - weight - DC or AC - voltage???

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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:** [January 23, 2021, 10:59pm UTC](https://community.electricforum.com/t/available-gem-motors/20686/11 "2021-01-23T22:59:13Z")

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> [@rvn68ak](#):
>
> How is this possible?

In all fairness, it’s peak HP. Actual ~10hp cont.

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<div class="post-metadata">

**Author:** ![rvn68ak](https://avatars.discourse-cdn.com/v4/letter/r/278dde/32.png) [@rvn68ak](https://community.electricforum.com/u/rvn68ak)\
**Post date:** [January 24, 2021, 12:11am UTC](https://community.electricforum.com/t/available-gem-motors/20686/12 "2021-01-24T00:11:42Z")

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Where would I find one of these?

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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:** [January 24, 2021, 1:49am UTC](https://community.electricforum.com/t/available-gem-motors/20686/13 "2021-01-24T01:49:41Z")

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I was just wondering if it would fit. I have a couple of them, but They come as a kit with a new controller. I believe that a member bought one. Let me see if he installed it yet.  
@MikeKC would remember.

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<div class="post-metadata">

**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:** [January 24, 2021, 3:44am UTC](https://community.electricforum.com/t/available-gem-motors/20686/14 "2021-01-24T03:44:58Z")

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Peak HP is usually measured with the rotor locked. It is a measure of the maximum electrical current drawn by the device being measured. It’s a term used by advertisers to create a false impression of capability of whatever they are trying to sell.

Usable continuous HP is achieved at much less current consumption. The true HP capability rating is the continuously available, average, with out causing damage. The word average allows for acceleration, bursts of speed for short duration’s, etc.

The electric motor is a marvelous device, it can be overloaded to many times its running rating for short periods of time. The limiting factor is heat. The harder you run the faster heat builds up until failure occurs. A 10 HP capable motor can put out 25 HP for short amounts of time. But not long.

Rodney

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<div class="post-metadata">

**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:** [January 24, 2021, 4:29am UTC](https://community.electricforum.com/t/available-gem-motors/20686/15 "2021-01-24T04:29:00Z")

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@Inwo Are you looking to reboot the PMac project?

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<div class="post-metadata">

**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:** [January 24, 2021, 5:13am UTC](https://community.electricforum.com/t/available-gem-motors/20686/16 "2021-01-24T05:13:50Z")

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> [@AssyRequired](#):
>
> PMac project?

Yes, I am.  
This post was about a small induction motor. The Pmac is capable of over 50hp peaks.

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<div class="post-metadata">

**Author:** ![rvn68ak](https://avatars.discourse-cdn.com/v4/letter/r/278dde/32.png) [@rvn68ak](https://community.electricforum.com/u/rvn68ak)\
**Post date:** [January 24, 2021, 11:52am UTC](https://community.electricforum.com/t/available-gem-motors/20686/17 "2021-01-24T11:52:20Z")

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Great! I would be interested.  
Thanks!

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<div class="post-metadata">

**Author:** ![GD\_Debre](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gd_debre/32/15420_2.png) [@GD\_Debre](https://community.electricforum.com/u/GD_Debre)\
**Post date:** [April 20, 2021, 12:31am UTC](https://community.electricforum.com/t/available-gem-motors/20686/18 "2021-04-20T00:31:36Z")

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Looking to buy a gem motor for a 6 seater HMU

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**Author:** ![Reddevil](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/reddevil/32/6128_2.png) [@Reddevil](https://community.electricforum.com/u/Reddevil)\
**Post date:** [April 20, 2021, 2:46am UTC](https://community.electricforum.com/t/available-gem-motors/20686/19 "2021-04-20T02:46:18Z")

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Have you checked with Ride 4 Fun?

> **[Gems Car Doors - Motors - Reprogramming - Tires - Wheels!](https://www.ride-4-fun.com/)**
>
> Gem Cars: doors, motors, reprogramming, tires, wheels, performance upgrades, controller repairs, charger and charging systems. All direct from Ride-4-Fun!

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<div class="post-metadata">

**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 20, 2021, 4:41am UTC](https://community.electricforum.com/t/available-gem-motors/20686/20 "2021-04-20T04:41:48Z")

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Ride 4 fun motors are not to be used in 6 seaters. I would recommend an Advance motor that has been/ serviced/updated by @Old_Houseboater . He has done 10+ motors for me.
