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lutach
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12.16.2009, 07:28 PM

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Originally Posted by Unsullied_Spy View Post
Screw TOUR and BRL, I want to race under the LUTACH rules
What rules . I mean, rules are fine, but to a certain extent. Not allowing one to use a ESC because it has kick ass technology, that's total BS. Like I mentioned before, a ROAR director has said 4 and 6 pole sensored motors are legal and yes I'm trying to get a few made. If Castle or any other company comes out with one before it'll be great and then we will see how this so called sanctions or clubs will treat them.
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ta_man
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12.16.2009, 07:40 PM

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Originally Posted by BrianG View Post
Well then, if that's what the're after, they need an rpm limiter module. That way, no matter what ESC or motor or voltage is used, all the cars will be the same speed.
RPM limiter is unrealistic. It won't solve the problem (even if all the manufacturers agreed to put one on) because it is not just about RPM but power output. You ought to know that, Brian. You would need different RPM limits for the different motors. Way too complicated for no real benefit. The RPM limiter they use now is the wind of the motor and it works better than anything else.

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Originally Posted by lutach View Post
What rules . I mean, rules are fine, but to a certain extent. Not allowing one to use a ESC because it has kick ass technology, that's total BS. Like I mentioned before, a ROAR director has said 4 and 6 pole sensored motors are legal and yes I'm trying to get a few made. If Castle or any other company comes out with one before it'll be great and then we will see how this so called sanctions or clubs will treat them.
As stated above, it is not being disallowed because of the technology but to keep the speed of the classes in the range that they were designed for without making people switch motors mid season.

Last edited by ta_man; 12.16.2009 at 07:49 PM.
   
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lutach
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12.16.2009, 07:41 PM

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Originally Posted by ta_man View Post
As stated above, it is not being disallowed because of the technology but to keep the speed of the classes in the range that they were designed for with making people switch motors mid season.
Ok, now I got it.
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BrianG
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12.16.2009, 08:57 PM

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Originally Posted by ta_man View Post
RPM limiter is unrealistic. It won't solve the problem (even if all the manufacturers agreed to put one on) because it is not just about RPM but power output. You ought to know that, Brian. You would need different RPM limits for the different motors. Way too complicated for no real benefit. The RPM limiter they use now is the wind of the motor and it works better than anything else.
It was more of a sarcastic tongue-in-cheek response. I think this whole thing is ridiculous. For a given voltage, a motor can only spin so fast. Period. The thing here is efficiency. So, because other companies don't/can't make a controller that is as efficient, CC has to suffer? It's not like they're using a switching step-up power supply or anything. And it's not about who has the most money wins since the MMpro1s is cheaper than just about everything else out there.

If they want to regulate it that much, they should just hand everyone the car they want people to use and be done with it.
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Pdelcast
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12.16.2009, 09:03 PM

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Originally Posted by BrianG View Post
It was more of a sarcastic tongue-in-cheek response. I think this whole thing is ridiculous. For a given voltage, a motor can only spin so fast. Period. ALl the other bells and whistles simply make the motor go as close to kv*voltage as possible. The thing here is efficiency. So, because other companies don't/can't make a controller that is as efficient, CC has to suffer? It's not like they're using a switching step-up power supply or anything. And it's not about who has the most money wins since the MMpro1s is cheaper than just about everything else out there.

If they want to regulate it that much, they should just hand everyone the car they want people to use and be done with it.
Actually Brian, we are making the motor go way above Kv*V, by using some timing and commutation tricks -- So they do have a point. But we didn't start it, LRP and Tekin had variable timing way before we did. We just took it a little further, and added some commutation tricks in...

We are also producing a lot more power -- for example, a 21.5 turn motor with fixed timing produces about 108 watts at the 50% efficiency point (I know- - the design of the motor is TERRIBLE!) We are getting about 190 watts output from the same motor at the 50% efficiency point, by changing the timing and commutation method.

If the ROAR motor wasn't so badly designed in the first place, we wouldn't be able to use software "trickery" to make the motor perform better (at least not by the same magnitude...)


Patrick del Castillo
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