15.5mm sintered rotor?
#16
Tech Elite
iTrader: (41)
1) That's not Charlie. Charlie's screen name is ..."Charlie".
There are other people that work there...LOL...and they do know how to get on the interweb. That's one of the big guys at Novak.
2) Why does everyone on here think that a larger magnet means more power?
That's like saying that since cars turn better with lower ride height, 2mm ride height is faster than 5mm. It's called a "trade-off". If it was all about magnet strength, all the brushed people would have been racing Core Stock motors, rather than Monsters and CO27...
There are other people that work there...LOL...and they do know how to get on the interweb. That's one of the big guys at Novak.
2) Why does everyone on here think that a larger magnet means more power?
That's like saying that since cars turn better with lower ride height, 2mm ride height is faster than 5mm. It's called a "trade-off". If it was all about magnet strength, all the brushed people would have been racing Core Stock motors, rather than Monsters and CO27...
#18
Tech Champion
iTrader: (168)
It was my understanding that the power capability of the motor (not necessarily output, but theoretical capability) is proportional to the surface area of the rotor. That is one reason the longer motor cans can make more power than the shorter ones (where there is direct comparison available, like the Fiegao L xnd XL cans).
#20
Tech Elite
iTrader: (41)
"Bigger rotor" doesn't equal "faster". They don't have the same powerband as a smaller rotor...they won't spin as fast. In some cases, they may make some motors in some applications drive differently...and if that works for you in that case...good for you...but there certainly isn't a 1:1 relationship between rotor size and how fast the car is.
You did see the deal the other day where (I think it was) Bob or Adnan that said that all the fast 13.5 guys at the Novak race ran the small rotor...even though they could run the larger one?
I understand the need for rules...I just don't get why people on the web always seem to think that if "1" is good, then "2" must always be faster...like there's no trade-off.
You know...5mm ride height is better for onroad than 10mm...so 2mm MUST be better than 5mm...cause 5 is better than 10...so 2 must be WAY better...like you won't have any down-side.
#21
Just cut the rotors to 10mm x 30mm and make everyone retool!!!
Since the rotors will be that small the motors should be smaller too! 480? 300?
I am not trying to start a battle, but I just think with our current technology, we are cramming too much power into everything and it may be killing our hobby. I am for the advancement, so if the power density is going up the most logicially solution would be reduce the volume/mass for both batteries and motors.
Since the rotors will be that small the motors should be smaller too! 480? 300?
I am not trying to start a battle, but I just think with our current technology, we are cramming too much power into everything and it may be killing our hobby. I am for the advancement, so if the power density is going up the most logicially solution would be reduce the volume/mass for both batteries and motors.
#22
Tech Elite
iTrader: (6)
Not everyone wants to run spec classes.
If the rules are going to be bent in favor of an existing company, it should undoubtedly be Novak. They're the incumbent, and were nice enough to lend their motor design to Feigao so they could copy it and resell it to a hundred different sticker manufacturers.
#23
a spec rotor sounds good but how could you do it in tech.
you cant see in a novak motor.
you cant see in a novak motor.
#24
Tech Elite
iTrader: (41)
http://www.teamnovak.com/products/rotors/index.html
#25
Tech Elite
rule is and will be in the 2008 rule book
12.4mm +/- 0.11 tolerance
therefore, 12.51 is the max and 12.29 is the min
settled?
12.4mm +/- 0.11 tolerance
therefore, 12.51 is the max and 12.29 is the min
settled?
#26
1) That's not Charlie. Charlie's screen name is ..."Charlie".
There are other people that work there...LOL...and they do know how to get on the interweb. That's one of the big guys at Novak.
2) Why does everyone on here think that a larger magnet means more power?
That's like saying that since cars turn better with lower ride height, 2mm ride height is faster than 5mm. It's called a "trade-off". If it was all about magnet strength, all the brushed people would have been racing Core Stock motors, rather than Monsters and CO27...
There are other people that work there...LOL...and they do know how to get on the interweb. That's one of the big guys at Novak.
2) Why does everyone on here think that a larger magnet means more power?
That's like saying that since cars turn better with lower ride height, 2mm ride height is faster than 5mm. It's called a "trade-off". If it was all about magnet strength, all the brushed people would have been racing Core Stock motors, rather than Monsters and CO27...
I thought Charlie was novaks only PR guy, apology to mr anon if you are someone else
First of I'm only talking about spec racing.
The reason everyone thinks a larger magnet means more power is because of the laws of physics
You will get tons more torque & horspower low in the rev range which requires higher gearing. Because the motor is doing less rpm it offsets the added inertia from rotating mass.
It's defunct now anyway because Roar are on the ball this time
I just hope the BRCA will follow suit with their 10.5 rules.
Nice job Dawn
#27
Measure internal diameter/lengh of stack. Rotor diameter/lengh.
Then you can use impedance test to check wind.
The only way to be 100% it's legal is to strip the windings off.
This has been the same for brushed motors from day dot.
#28
Tech Elite
iTrader: (41)
Torque is not everything, otherwise all 27T guys would be running P2K and Core Stock motors. Besides...if you want to throw "it's just physics" out there, you should be ready to consider ALL the physics involved, not just the one that supports your "bigger is better" argument.
Generally, I find that when real-world results don't square with a theory, you should reconsider your theory...not ignore reality.
#29
It's not PR, it's about providing accurate information.
Torque is not everything, otherwise all 27T guys would be running P2K and Core Stock motors. Besides...if you want to throw "it's just physics" out there, you should be ready to consider ALL the physics involved, not just the one that supports your "bigger is better" argument.
Generally, I find that when real-world results don't square with a theory, you should reconsider your theory...not ignore reality.
Torque is not everything, otherwise all 27T guys would be running P2K and Core Stock motors. Besides...if you want to throw "it's just physics" out there, you should be ready to consider ALL the physics involved, not just the one that supports your "bigger is better" argument.
Generally, I find that when real-world results don't square with a theory, you should reconsider your theory...not ignore reality.
I said the increase in torque would be enough to overcome the negative affects of the rotors inertia. If you just want to twist what I say around then so be it. You win 'Mr Internet Arguing Champion' .
#30
Tech Elite
iTrader: (41)
Grown-ups tend to see the nuances and trade-offs, while little kids and internet guys tend to always jump to conclusions based on simplistic perspectives.
Rather than calling names, why not just discuss the issue civilly?
Novak motors have the smallest rotors, yet they seem to be regarded as the motors with the best feel, powerband and driveabillity. I don't think I'm going out on a limb to say they've really caught on out there with the kids.
There are larger rotors available for them, but they don't seem to be widely used in higher-level spec class racing. It doesn't seem that the larger rotor makes the car GO FASTER.
That doesn't appear to match with your view that a larger rotor means "better" or "faster".
I wasn't necessarily talking about inertia, I'm talking about RPM range vs. angular velocity, among other things. Sure it makes more torque, but does it have the RPM range necessary to get the job done? Torque and big magnets aren't everything...again...if they were, the Monster 27T would have never been used, everyone would have TOP and Yokomo motors.