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Old 2014.03.06, 01:05 PM   #1
flashdaniels
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MR03 sports series motor selection

I have purchased a new MR03 sports. I have just bought the PN racing adjustable motor mount and can't fit my stock motor in it. I have searched for some motors (mainly the PN racing 50t or 70t) on a few sites but they say the motors are not compatible with my MR03S.
So my question is what motor can I buy that will fit my mount and is also compatible with my MR03 sports?
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Old 2014.03.06, 03:17 PM   #2
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Quote:
Originally Posted by flashdaniels View Post
I have purchased a new MR03 sports. I have just bought the PN racing adjustable motor mount and can't fit my stock motor in it. I have searched for some motors (mainly the PN racing 50t or 70t) on a few sites but they say the motors are not compatible with my MR03S.
So my question is what motor can I buy that will fit my mount and is also compatible with my MR03 sports?
Welcome to the Forums! The PN 70T and 50T should be fine. I was not aware of certain motors not being compatible with the MR-03 Sport.

The way most aftermarket motors connect to aftermarket mounts (from PN and others) is with two screws that go through a plate in the mount and into the front of the motor. The stock motor (and some other Kyosho motors) do not have the threaded holes in the front of the motor to connect to aftermarket mounts, which I think is was you are describing.

I would start with a PN 70T or 50T and then go from there if you need more speed.
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Old 2014.03.06, 05:22 PM   #3
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thanks for the reply Traveler. I asked the same question on the PN racing site and they said that none of there motors would work on my MR03S unless I upgraded the FETs.
Do I need to do this to put any new motor on a MR03S? I don't race my car so I thought a FET upgrade wasn't necessary. I only bought the motor mount so I can fit different bodys and use the same mount.
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Old 2014.03.06, 05:52 PM   #4
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Please keep in mind that MR-03S board has only one layer of FETs.
I can not tell you which motors are compatible though.
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Old 2014.03.06, 06:47 PM   #5
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thanks for the reply Traveler. I asked the same question on the PN racing site and they said that none of there motors would work on my MR03S unless I upgraded the FETs.
Do I need to do this to put any new motor on a MR03S? I don't race my car so I thought a FET upgrade wasn't necessary. I only bought the motor mount so I can fit different bodys and use the same mount.
If you're just running for the fun of it, a 70turn with an 8 or 9 tooth pinion gear should be more than enough. Just make sure the motor contacts get screwed down properly. Make sure the contact rings aren't touching anything other than the square pads around the holes, and don't let the wire connections cross into each other.
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Old 2014.03.06, 09:39 PM   #6
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I can confirm that a 70t motor will work with a sports series. We ran one for a couple hours last Saturday without issues.
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Old 2014.03.07, 03:39 AM   #7
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Thanks for the advice guys! I shall go ahead and purchase a 70t motor and see how it goes. I think I will keep the FET upgrade for a future project. Just out of curiosity is it easy to do a FET upgrade yourself? I have a very basic understanding of electronics and I live in an area where there isn't a good hobby/model store that could do it for me.
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Old 2014.03.07, 06:26 AM   #8
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You might want to consult with your local computer repair shop. if they are any good at what they do then a basic "fet" job should be a cinch. There are tutorials out there that can provide the basic's.
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Old 2014.03.07, 10:44 AM   #9
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Originally Posted by flashdaniels View Post
Thanks for the advice guys! I shall go ahead and purchase a 70t motor and see how it goes. I think I will keep the FET upgrade for a future project. Just out of curiosity is it easy to do a FET upgrade yourself? I have a very basic understanding of electronics and I live in an area where there isn't a good hobby/model store that could do it for me.
Best thing I can tell you about your first fet job?... So much can go wrong and only one thing can end up right.

If you a completely surgical about it, and have steady hands and you don't miss tiny details, go for it! But do realize that you may want to have fun with it before you fry it accidentally.

Plenty of info on this site as to how to do the job. I can say from first hand experience though, the newer boards are much more delicate than the old AMs.
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Old 2014.03.07, 06:48 PM   #10
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Ok I had a look at some of the fet upgrade tutorials and I think its safe to say that is something to be left to the professionals! Thanks for all the advice guys.
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Old 2014.03.07, 06:50 PM   #11
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If you have a club nearby, maybe they could help you out. Check the Tracks and GTG forum, maybe you'll be closer to a club than you think.
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Old 2014.03.07, 07:07 PM   #12
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I live in south west france. I have been trying to find a club near me but with no luck. Im pretty new to the whole mini z scene so I think I can put off upgrading fets for a while. A 70t motor will keep me going for the time being.
Im just glad I found this these forums full of helpful advice and people willing to share their knowledge!
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Old 2014.03.07, 08:18 PM   #13
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Check with fovea3d, he will be able to point you in the right direction.
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Old 2014.03.08, 02:08 PM   #14
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Hi!

You can check out the forum MiniZ france. You'll find a club nearby for sure!
And if you come to Belgium one day, let me know!
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Old 2014.03.08, 06:27 PM   #15
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Everybody has said what had to be said, so all I can say is welcome to the forums...
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