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Old 03-27-2006, 03:37 PM   #136
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Maybe if I could ZAPP my motors every day, I would have an edge! Because doesn't excessive heat detract from the magnet strength?
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Old 03-27-2006, 03:41 PM   #137
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Should be way faster than a stocker of any kind.
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Old 03-27-2006, 04:18 PM   #138
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I hit the sweet spot and then some. Poof, up in smoke. After swapping out my Brood ROAR Pro Stock for the Brahma Demonic CO27, I could'nt get anything out of it, so I geared up 3 teeth on the pinion. Well after about the halfway mark I thought it was nitro season already, cause that baby was smoking. Maybe I'll get another one and find a happy gear ratio for it.
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Old 03-27-2006, 05:21 PM   #139
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i ran my co27 yesterday and geared it at 6.42 fdr.it was pretty quick for a stocker.i used 4499 brushes with a .030 verticle slot about .062 deep and trinity black springs + and -.this gave me more rpm for the fast,flowing track i ran on since i didnt need a ton of tourqe.it ran real good but its still a stocker.
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Old 03-27-2006, 06:05 PM   #140
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Please forgive me (I'm a kinda of new) but what is "6.42 fdr" What does this mean? I now get Rollout.
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Old 03-27-2006, 06:10 PM   #141
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fdr=Final Drive Ratio. it is mostly used for rubber tires
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Old 03-27-2006, 06:10 PM   #142
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x.xx FDR is the final drive ratio. Spur/Pinion x Internal Drive Ratio= FDR (final drive ratio). The internal drive ratio of my RDX is 2.0, so to find the FDR I would do, 100/30 * 2.0 = 6.66 FDR. Get it any better?

Then you use this number to find your rollout. You multiply Pie by tire size (3.14 * 57.5mm) and divide that by your FDR. Rollout is a more accurate way of figuring out gearing for foam tire racers because it takes into consideration your tire size.
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Old 03-27-2006, 06:11 PM   #143
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down here in florida all we run is rubber tire asphalt.we dont need to figure roll out because our tire size never changes.because of this we just calculate our final drive ratio.(fdr)
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Old 03-27-2006, 06:14 PM   #144
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wow,either i type slow or my computer is slow.the last 2 posts were not there when i hit the reply button.
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Old 03-27-2006, 06:14 PM   #145
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Quote:
Originally Posted by protc3
i ran my co27 yesterday and geared it at 6.42 fdr.it was pretty quick for a stocker.i used 4499 brushes with a .030 verticle slot about .062 deep and trinity black springs + and -.this gave me more rpm for the fast,flowing track i ran on since i didnt need a ton of tourqe.it ran real good but its still a stocker.
yes Jason your stock was a missile!!!
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Old 03-27-2006, 06:16 PM   #146
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Quote:
Originally Posted by ottoman
I think you should invest in a new 19 turn any good 19 turn (geared right) is faster than a stocker
i dont need to invest i have plenty of motors
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Old 03-27-2006, 06:18 PM   #147
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thanks bro.i guess it didnt help my judgement on the motor since i was running that 7x1 back to back with stock.i dont think anything felt fast after that.even my 19 turn 1/12th seemed like a slug.
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Old 03-27-2006, 06:25 PM   #148
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i gotta say though,the magnets in the CO27 are much better than the monsters.they dont seem to be effected by heat like the monters do.they have alot more tourqe and in my oppinion find it not as picky on gearing.it only took me 1 battery pack to find the sweet spot.i really enjoyed running it.
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Old 03-27-2006, 06:55 PM   #149
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I ran the CO27 during the past weekend at a major race. It's my first Stock motor and racing with it in a indoor carpet track. I ran rubber tires and the final drive ratio is 6.76. The motor is so fast and does not run very hot. My car pulls away from the guys who are running Monster on the straight away! I am impressed by the performance.
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Old 03-27-2006, 07:10 PM   #150
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Thanks guys for the info..

My god, I'm running FDR of 7.5(25) to 7.2(26) (75/25 * 2.5 (TC4)). No wonder I'm not getting the motor hot... But this is where my motor likes it... 767 brushes, Purple springs 6.5 on pos, 6.25 on negtive.
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