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Old 06-10-2004, 11:47 PM   #31
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Has anyone run Trinity 4505 brushes? I bought a motor from someone (hardly used) and it comes with these brushes.
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Old 06-10-2004, 11:50 PM   #32
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Default monster stock gearing

for a monster stock gearing, for a tight indoor track you want it about 8.0 and for a more open indoor track you want about a 7.5
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Old 06-11-2004, 12:02 AM   #33
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Are the 4505's the ones with the cross serrations? I never really cared for those too much. I do liek the brush that is the same compound but just standard serrations. The serrations seemed really shallow, and I like running the motors with the serrations still in the brush. To my understanding, sharp edges transfer electricity better (serrations kinda help with that ).

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Old 06-11-2004, 12:33 AM   #34
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Yeah. They're cross cut serrated.
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Old 06-11-2004, 12:47 AM   #35
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The serrations are there to ease the break in also, I would think it'd be better to have cross cut serrations during break in because you use the whole area of the comm.
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Old 06-11-2004, 12:56 AM   #36
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From Trinity Brushes Magazine Ad:

Part Number: RC4505
Face: C
Name: Cross Cut 99 Plus
Silver Comparison: (Highest along with the 99 plus regular)
Use/Characteristics: Jim's (Jim Dieter) choice for serious stock racing, angled serrations keep comm cleaner longer between truing.
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Old 06-11-2004, 03:46 AM   #37
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My experience with the 4505 or 4503 (both use the "99" compound, different serations) is that they are just a "tad" faster then either the Fantom 315 or Reedy 767, but require much more attention to com wear and carbon build up.

I believe the Fantom 315 and Reedy 767 are the same brush.


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Old 06-11-2004, 11:31 AM   #38
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DOMOisCOOL - I've tried the 4505 cross cuts in my monster. Faster then 767's and e's but only good for the life of the serrations imo. Took ages to break-in compared to putnams. In two runs the serrations were shot. Putnams gave better power, the serrations lasted 6 runs and they broke-in very quickly.

I've since thrown the used 4505 brushes in my binary and they don't seem too bad at all. But I forgot to break them in before a main, after a cut and it made the car undrivable, stutter'd all over the place.
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Old 06-14-2004, 12:40 AM   #39
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i just bought my Monster and i'm 'thinking' about running a 88t spur with a 21t pinion on a tight technical track with a 40' back straight. i don't understand gear ratios and how spur/pinion combos work YET but i'm self-taught and a decent learner so all if any suggestions are welcomed. Oh, i'm running the XXX-s RTR w/ some hop-ups
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Old 06-14-2004, 01:19 AM   #40
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Rubber or foam? If rubber, you may want to run less teeth on the pinion for the monster. I think a 21 on a tight track would fry your monster. Just check what everybody else it running at your track for the monster and run that.
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