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Old 01-12-2003, 07:04 PM   #886
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Yeah sorry about that I dont know what all the Integy numbers for their motors are.
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Old 01-12-2003, 10:14 PM   #887
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i dissagree about core stock's they are an exccellent motor when dynod they have slightley less rpm but in return you get heaps of power.
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Old 01-12-2003, 10:18 PM   #888
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Quote:
Originally posted by Speedo
We are going to be starting a 19 turn class at my track, and I was wondering if anyone could help me out by letting me know how the trinity and reedy motors compare.

Thanks,
Josh
?

Quote:
Originally posted by Aluma
actually...best motor I've ever run was the integy matrix 9.5!
way more power than the p2k lightspeed i have now. plus i never even rebuilt it...it put out full power on one set of brushes for 6months before i included it with a kit I sold.
I garuntee you it was not putting out full power.
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Old 01-12-2003, 10:18 PM   #889
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I have had excellent results with a core/hellfire! It is one very fast motor.
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Old 01-13-2003, 06:07 AM   #890
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hi guys,

this may be of interest to you all.

www.schumacher.clara.net/stockreview.htm

the core stock is the one to have. its a scientific mode of testing so its not my opinion, its based on figures.

sanj
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Old 01-13-2003, 10:28 AM   #891
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Quote:
Originally posted by Speedo
We are going to be starting a 19 turn class at my track, and I was wondering if anyone could help me out by letting me know how the trinity and reedy motors compare.
I've used the Chameleon Pro and it works fine with just a basic break-in. The Reedy 19 Turn Spec has really hard brushes. It took forever to break it in and it didn't produce good #'s. I swapped brushes (Trinity #4499) & springs (Trinity Red/Green) and the motor put out #'s similar to the Chameleon.

I was able to get 500-1000 extra RPM out of both of them by degreasing the bearings and relubing w/AeroShell 12.
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Old 05-29-2003, 02:51 PM   #892
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Quote:
Originally posted by schumacher
hi guys,

this may be of interest to you all.

www.schumacher.clara.net/stockreview.htm

the core stock is the one to have. its a scientific mode of testing so its not my opinion, its based on figures.

sanj
Hey Sanj!

Is your opinion of the Orion Core stock still the same? Have you put a Monster through your test procedure to compare? GREAT motor roundup/review btw, thank you! -John
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Old 05-29-2003, 03:23 PM   #893
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Hmm that Integy MVP review is interesting...an MVP that doesn't get hot
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Old 05-29-2003, 07:44 PM   #894
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LOL, I'll believe that one when I feel it(not saying it can't happen, just never seen it myself)....
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Old 05-29-2003, 10:42 PM   #895
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Regarding that cooler running Matrix MVP ... "It is largely based on the MVP from Reedy apart from one rather major feature. The armature has a lower polar moment of inertia."

One question: what the heck is a "lower polar moment of inertia"? I wouldn't know what to look for if it bit me ... and it sorta sounds like a medical problem to me, I know when my pole has a "moment of inertia" I'm thinking, "Hmm, where did I put that sample of Viagra?"
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Old 05-29-2003, 11:08 PM   #896
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Question for those of you who have used Big Jim to rebuild you stock motors.

How long have you had to wait to get your motors back from him?
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Old 05-30-2003, 05:59 AM   #897
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Quote:
Originally posted by Luckyman4
Regarding that cooler running Matrix MVP ... "It is largely based on the MVP from Reedy apart from one rather major feature. The armature has a lower polar moment of inertia."

One question: what the heck is a "lower polar moment of inertia"? I wouldn't know what to look for if it bit me ... and it sorta sounds like a medical problem to me, I know when my pole has a "moment of inertia" I'm thinking, "Hmm, where did I put that sample of Viagra?"
Polar moment of inertia is to do with the weight and it's distance from the centre of movement. Something with a lower moment of inertia is easier to get moving, and easier to stop moving. So, in this case, an armature whose weight is closer to the centre is easier for the electrical energy to turn than an armature whose weight is near the edge. It's like holding a heavy weight in your hand - if you hold it close to your body, and try and spin around on your feet, it's easier than holding the weight at arms length and trying to spin on your feet. (I'm not sure I've explained this very clearly...)
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Old 05-30-2003, 08:24 AM   #898
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i think sosidge hit the nail on the head, i can add my explanation if it helps.

its to do with weight and where it is, if weight is placed further away from the center of a shaft it takes more energy to get it spinning.

the same amount of weight closer to the center of the shaft will require less energy to get it spinning.

the weight and where it is is refered to as polar moment of inertia.

as for the trinity, i was lucky enough to get hold of one and its been on test, and to be honest as much as it pains me to say it (because i think their quality control is a disgrace) that motor is the best stock out there.

sanj
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Old 05-30-2003, 09:51 AM   #899
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Hey guys, I've run that Integy MVP and its really fast....Just that it was really expensive for me...$40!! I'd definately get another though... I never even replaced the brushes throughout its entire useable life...the comm went straight to the core and never slowed down through it all.
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Old 05-30-2003, 12:46 PM   #900
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Sosidge, Sanj,

THANK YOU! I think I get it ... the lower polar moment of inertia armature of the Matrix MVP "probably" has an armature stack that is fatter at the bottom and thinner near the outer edge, so that the weight of the stack & wire is closer to the axis of the armature. I would think that would give you quicker initial (lower rpm's) spoolup time and more torque at lower rpms? But Sanj's test results seem to indicate the opposite ... hmm, not sure I understand the 'why' of that, but I think I got the explaination of the weight location right? That the arm takes less power to get it moving (ie the lower polar moment to counterbalance those strong C4 MVP magnets, ie the MVPs extra notchy feel when you spin it by hand) would seem to explain why it runs cooler, less initial amp draw, right?

Sanj, can't wait to see the results of your Monster test, will you be updating your original test page? Thanks again!
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