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Old 03-25-2004, 06:12 AM   #61
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I am currently running a Reedy Quad Mag 19 Turn motor in my TC3.

Its very fast, but I have had a few issues with my brushes that I wanted to run by you guys to see if you have an answer.

When running my quad mag with 767 brushes, the comm would turn orangish and would look burned, the brushes were shot pretty much too. I have gone through about 4 sets of 767s like this and went through an armature in two weeks. When working the motor was nice and didn't feel hot.

Last race with the new armature and new brushes ( 767s ) it did the same thing. I cut the comm and put 766s on and I didn't get the same problem as I had had before. I had good power and the comm looked very clean.

After speaking with a XRay factory driver ( Thanks stan ) he told me that my driving style may be the problem as I was coming into turns very fast and slamming the breaks which burns the comm.

I didn't this type of driving for the main and the comm still looked great. I am thinking of retrying the 767 brushes again to get a better feel for them as I have about 3 pairs that will be just sitting around if I stick with 766s.

What do you guys think? Considering I had breaking turned like all the way up and was coming into the turns so hard, could that have been my problem?


Thanks!
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Old 03-25-2004, 07:42 AM   #62
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One thing I've tried and it felt pretty good was a 767 on the positve and a 766 on the neg. This will give you a little more power and longetivity. The Xray driver is right though, brakes are harder on a comm than throttle.
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Old 03-25-2004, 08:00 AM   #63
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Your driving style maybe have something to do with it. But the real problem is timing of motor. It archs to much at 24 degrees timing. Try 18 degees. And just regear. I just had 12 runs on 767s. I had to replace brushes due to they were too short. They were not burnt. I just ran too heavy springs..
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Old 03-25-2004, 08:34 AM   #64
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How do you change the timing on a SPEC motor?
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Old 03-25-2004, 08:49 AM   #65
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Quote:
Originally posted by akrcracer
Your driving style maybe have something to do with it. But the real problem is timing of motor. It archs to much at 24 degrees timing. Try 18 degees. And just regear. I just had 12 runs on 767s. I had to replace brushes due to they were too short. They were not burnt. I just ran too heavy springs..
Correct me if I'm wrong but, I think Quad is fixed timing. Right?
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Old 03-25-2004, 08:59 AM   #66
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you can cut the tab and then it will be adjustable but for the rules of our track I believe that will be illegal. Would be nice if Reedy had a can with a lower timing option.

hmm. not sure what to really do. I am liking the performance of the 766s for what I do. Will I notice a real power increase over the 766s?
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Old 03-25-2004, 05:59 PM   #67
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Our track voted on 19t class being 19t mod class. So timing is can adjusted. Because most racers wanted to use Quad magnet motors. Reedy Quad 19 is fixed 24 degrees. I cut tab so I can adjust...

Last edited by akrcracer; 03-25-2004 at 06:06 PM.
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Old 03-25-2004, 09:12 PM   #68
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LOL CAIN YOU COULD PROBLEY CUT THE TAB AND STILL BE LEGAL THEY ARE ALOWING BINARY 19 TURNS ALTHOUGH I HAVE REAL MIXED FELLING ABOUT THOSE MOTORS AND THERE BANG FOR THE BUCK. THEY ARE A MAIN MOTORS FOR THE FIRST 3 BRUSHES AND THEN THE NEXT TWO RUNS GOOD QUALIFIERS AND THEN THERE GOOD FOR SLAVE MOTORS OR TO BE USED AS BAIT AND TACKLE FISHING WEIGHTS BUT MAN ARE THEY FAST WHEN THEY ARE NEW

I WILL TRY THE REEDY 19 IT REALY DID HAVE SOME @@S IN YOUR CAR MAYBE EVEN THIS WEEKEND IF I CAN GET THE NEW XRAY DIALED IN ITS MUCH MORE AGRESIVE THEN THE OLDER ONE

BUT WHEN EVER I AM IN DOUBT GOOD OLD FAITFULL COMES OUT OR WHEN I JUST DON'T HAVE TIME TO REBUILT OR PLAY ITS THE OLD C2 WHICH IS STILL THE CHAMP OF 19T IN MY OPINION
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Old 03-25-2004, 11:29 PM   #69
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Quote:
Originally posted by Cain
hmm. not sure what to really do. I am liking the performance of the 766s for what I do. Will I notice a real power increase over the 766s?
I'm not sure about the reedy quad 19t but in the Mvp you can definately feel the difference switching from 766's to 767's. You will loose runs between cuts though. 766's polish the comm while high silvers dirty it up. As for driving, turn the brakes way down on your radio and it will FORCE you to let off early and let the car roll through the turns.
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Old 03-26-2004, 08:23 AM   #70
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have you tried big jim's recommendation of cutting the leading and trailing edge of the brushes for the MVP? I have brushes from him cut like this for my MVP.

I think I may try the 767s one more time and see how it goes.
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Old 03-26-2004, 12:35 PM   #71
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Most of the time I just cut timing in(trailing edge). I'll try the jim style cut with my next re-build though.
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Old 03-26-2004, 12:39 PM   #72
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how are you liking your MVP compared to other motors?
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Old 03-28-2004, 11:49 PM   #73
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Do any of you guys know the limit of cutting the comm on the Reedy quad 19T? As I cut the comm, the motor gets faster and faster. Right now, I'm going through one set of brushes per run. I remember hearing the limit being around .335 in dia. I'm at .334 in dia and it's still fast. Perhaps I should keep going until I find that limit.
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Old 03-29-2004, 06:25 AM   #74
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I asked associated what you can cut the mid comm down to ( the Quad Mag Size comm ) and they said .300 I cut mine down to that and it worked great before I went to a new arm.
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Old 03-29-2004, 09:29 AM   #75
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Quote:
Originally posted by Cain
I asked associated what you can cut the mid comm down to ( the Quad Mag Size comm ) and they said .300 I cut mine down to that and it worked great before I went to a new arm.
Wow, that's small. I suppose I'll keep going and using it. Thanks.
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