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Old 03-07-2006, 11:35 AM   #691
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I think that if anything the brushless is quieter. The micro sized pinion gears that we're running in 12th aren't as quiet though.
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Old 03-07-2006, 02:34 PM   #692
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from what i was told from someone i'm buying a 6.5r they were a little louder. maybe its just a different sound.
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Old 03-07-2006, 02:46 PM   #693
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Might be the drivetrain they heard, not the motor. We ran 5.5s with mod motors last weekend, no real difference in sound. But the 5.5s were faster. There was a 9T, a 6T and another one, but I don't know what it was. The guy with the 6T went right back to his 5.5...
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Old 03-07-2006, 03:21 PM   #694
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No the brushless motors sound different to a brushed motor.

I'll stick my neck out and say they're quieter. Not sure exactly how a normal brushed motor makes the sound, but i assume there's some sort of resonance from the brushes on the comm segments. Also, a fair bit of noise from the large bumpy armature spining inside the can, and air going in or out of the vents...

Brushless is totally enclosed, so i guess the only sound is from the bearings. There IS sound, but it's more like a small motor. Just a high pitched whine without any "turbine" or air sound. the sound is maybe a little less, but different in nature.

In my experience the brushless is a little quieter than the brushed motors. In a shaft drive, it does highlight the gear sounds! so i makes you work a bit harder to get it all smooth...

I've heard of SOME BL motors that came out unbalanced or with dodgy bearings and they really make a sound when they hit their resonant frequency.
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Old 03-07-2006, 06:40 PM   #695
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Novak currently offers an upgrade kit for the 4300 and 5800 motors. Has anyone used this upgrade and what did it do for performance?
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Old 03-07-2006, 08:14 PM   #696
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Quote:
Originally Posted by rraden
Novak currently offers an upgrade kit for the 4300 and 5800 motors. Has anyone used this upgrade and what did it do for performance?
I'm using it on my 4300. Performance is about the same, but it eliminates the annoying buzz/rattle/resonance the motor seems to have at certain RPM's.

Will buy again A+++++++++++
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Old 03-07-2006, 11:08 PM   #697
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Dear Novak,

4300 is the new "stock." Please, please release a version of this motor with the upgraded end bell and rotor, and give it a name, maybe "Stock Brushless" and let us be done with this brushed motor idiocy. The faster motors are totally great, but most club racers prefer something slower. 4300 classes are catching on around the country, and more and more clubs are allowing them to be used with stock motors. Please do something to embrace and extend this trend.

The death of brushed motors is at hand! The day of reckoning is upon us! Let us cast away these shackles (brushes) and free ourselves! Let us embrace this great new world!

... or something.
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Old 03-08-2006, 02:13 AM   #698
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Uh--Derrr....

So i found out a little something today.

I've had lots of little fans repeatedly crap out on me lately. We race outdoors here often in pretty warm weather. Now, i figured it was just track debris that made the small 5v fans die. (i'm talking about the clear one on the GTB and the one's you get from various manufacturers for motor cooling.)

First they slow, then they buzz and eventually the car overheats mid-run because the fan stops intermittently. I thought it was the fan bearing seizing up with dust and grit and whatnot..

FYI - if you peel the little sticker off the base of the fan you can play with the fan bearing!! Chuck a few drops of oil in there and suddenly the fan comes back to life! WOoHOoo.... Just chuck the sticker back on and you're in action. The buzz comes from the fan running a dry bearing!

I'd previously just chucked the little fans because they're so cheap anyway.
My car never overheats now!

Hope that helps you guys..!
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Old 03-08-2006, 02:22 AM   #699
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I ran the new 4.5 Motor last Saturday against brushed 8 and 7 turn motors, the power was there and I can keep up with the guys. I was very impressed with the new brushless motor
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Old 03-08-2006, 05:19 AM   #700
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Quote:
Originally Posted by FBJ's RDX
I ran the new 4.5 Motor last Saturday against brushed 8 and 7 turn motors, the power was there and I can keep up with the guys. I was very impressed with the new brushless motor
whats your final fdr? Im running a 10.11 and the thing just doesnt want to stop accelerating!
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Old 03-08-2006, 07:42 AM   #701
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Quote:
Originally Posted by Marcos.J
whats your final fdr? Im running a 10.11 and the thing just doesnt want to stop accelerating!
I think you are still over geared. Try a 120/20 for an FDR of 10.8. Look to see if you can find a 64p 19T gear somewhere if it still feels overgeared.

FYI, if you are racing at TQ (now Fast Track) next week either run your 5.5 in Mod of a brushed 19T. Last year Troy was turning faster laps in Mod with a 19T than PW with an 8 turn. You just cant use the power of a mod at TQ.
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Old 03-08-2006, 08:08 AM   #702
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Quote:
Originally Posted by AdrianM
I think you are still over geared. Try a 120/20 for an FDR of 10.8. Look to see if you can find a 64p 19T gear somewhere if it still feels overgeared.

FYI, if you are racing at TQ (now Fast Track) next week either run your 5.5 in Mod of a brushed 19T. Last year Troy was turning faster laps in Mod with a 19T than PW with an 8 turn. You just cant use the power of a mod at TQ.
im running a 19t for TQ or the 5800,the 4.5 & 5.5 brushless is going to be to much on that little track!!

Im going to try the 120/20 combo at speedline sunday

Last edited by Marcos.J; 03-08-2006 at 09:43 AM.
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Old 03-08-2006, 10:33 AM   #703
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Just received my 4.5 system from Tower the other day ($230 to my door ). Can't wait to try it out. Opening race day (outdoor season) is in a few weeks here.
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Old 03-08-2006, 10:40 AM   #704
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Quote:
Originally Posted by newracer
Just received my 4.5 system from Tower the other day ($230 to my door ). Can't wait to try it out. Opening race day (outdoor season) is in a few weeks here.
its fast!!
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Old 03-08-2006, 04:10 PM   #705
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Quote:
Originally Posted by syndr0me
Dear Novak,

4300 is the new "stock." Please, please release a version of this motor with the upgraded end bell and rotor, and give it a name, maybe "Stock Brushless" and let us be done with this brushed motor idiocy. The faster motors are totally great, but most club racers prefer something slower. 4300 classes are catching on around the country, and more and more clubs are allowing them to be used with stock motors. Please do something to embrace and extend this trend.

The death of brushed motors is at hand! The day of reckoning is upon us! Let us cast away these shackles (brushes) and free ourselves! Let us embrace this great new world!

... or something.




I second that...
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