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Old 09-20-2001, 09:40 PM   #1
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Default rmp on green machine 3?

What is the max RPM of your GM3?
I read that someone got a fantom GM3 with upwards of 25,000. Does this sound realistic ?
What is the average RPM for any GM3?
Thanks,
Kenny
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Old 09-20-2001, 10:04 PM   #2
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I have 30,000 revs. robi numbers
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Old 09-20-2001, 10:55 PM   #3
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robi numbers? are they the same as the dyno numbers that come with the motors?
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Old 09-21-2001, 12:17 AM   #4
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Isn't GM3 suppose to be higher rev. motor than P2K?

my p2k Pro has the rev of 30,283 rpm.... isn't that weird??
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Old 09-21-2001, 01:55 PM   #5
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What dyno the numbers are from depends on what company you bought the motor from. I find the numbers that come with them are very inconsistant anyway

Yes, that is correct, the Gm3 on average does rev higher. It could be that you have light springs on your P2K, or once in a while there is just an odd-ball

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Old 09-22-2001, 12:53 AM   #6
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Mine revs up to 34000 RPM!TURBO numbers.I heard of a GM3 reving up to 38000!But that was a handpicked motor.
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Old 09-22-2001, 08:59 AM   #7
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Our Pro was dynoed at 30K at the factory. I saw another new one that was dynoed at 33K with efficiency just over 70%. Wouldn't it be great if you could ask the salesman to choose the best one from the bin for you?
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Old 09-22-2001, 07:15 PM   #8
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Don't put your faith in numbers!!! The track is the ultimate dyno. RPM will do nothing if you don't have your car setup right, or your gearing down. Take a look at Big Jims forum on About.com he has a very good motor forum, he's the guy that designed the P2K for Trinity. By the way I have had GM3s with 21,000-22,000 rpm that did much better on the track then my highest rpm GM3 over 25,000 on the dyno. Trinity's numbers on their GM3s are before the brushes are even worn in, these generally give higher rpm and lower power #s. Make sure your comm is perfectly round and then let your brushes fully seat themselves before dynoing them. These will be more accurate and thus you can properly guage your gearing!
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Old 09-22-2001, 10:58 PM   #9
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I will tell you that different dynos will put out different numbers, the CE dyno tends to put out higher rev numbers. I never look at RPM when dyno-ing motors, it's spin up time, watts, torque and efficiency. Our motors are displayed on a shelf, so you can get the one with the highest numbers. I don't even glance at the factory numbers though.

Soon I will be getting a standard P2K because a) when a company dynos motors, it takes out the good ones for it's team drivers, and the standard ones aren't dyno'd and b) the armatures on "pro" motors are half trued down, so they don't last as long.

Josh
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