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Old 09-09-2007, 06:12 PM   #61
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Originally Posted by magm20001 View Post
attention novak: can you please inform towerhobbies of this new part and get them to stock it.


thanks
We've "reminded" them many times! It's probably more effective if potential customers do the reminding.....
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Old 09-09-2007, 06:26 PM   #62
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ok done, but i'm not too sure if the request would be passed onto the person who does the purchasing decisions
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Old 09-09-2007, 07:09 PM   #63
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I just got mine yesterday. I'll be trying it out Wednesday, we'll see if it makes a difference.

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Old 09-09-2007, 08:03 PM   #64
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For me, I feel the 13mm rotor is an improvement over the sintered thus far. Gearing changed a little from last week to this week; went from a 4.7FDR (13.5 Sintered) to a 4.2FDR (13.5/13mm combo) on our large outdoor flowing track. Granted the layouts were a wee bit different but I could 'feel' the difference in both rotors. Today, 19t 'brushed' guys were pulling 16.4's for fast laps, I was pulling 16.6's w/ the 13.5 Saweet!!
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Old 09-09-2007, 11:54 PM   #65
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How is this any different than running different brush/spring combinations? It's not. I find it funny when I hear that brushed stock was a spec class and 13.5 isn't. A Reedy MVP was different than a Monster which was different than a CO27 which was different than a Core Stock which was...
We are going to see the same variations in brushless. 13.5 will be the class and the can and rotor designs will vary. This is just a tuning option.
Good point, so please remember that the following items are controlled by Rules for BR 'stock' and 'spec' motors...

Wire diameter; number of turns; wind pattern; amount of advance; magnet material; rotor diameter; rotor length.

...and all the designs you mentioned conformed to those rules. Such Rules do not exist for BL, so any comparison is not valid. Until BL has a similar set of Rules, we can't say what variations are important to finding the best motor. There is no equivalence from BL to BR in 'stock' until the BL motor has a set of Rules to follow.
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Old 09-10-2007, 12:14 PM   #66
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The original sintered rotor should go down in history as one of the greatest things to ever happen to R/C. It truly brought brushless motors into the limelight, and has got to be the longest lasting "consumable" part in a motor ever. The fact that Novak found a way to improve on something that so greatly enhanced our hobby is cause for celebration, not bitching and crying.
Which has me scratching my head as to why some other BL motor makers are introducing their new BL motors with Bonded Rotors and not Sintered Rotors.

In know that Novak offers the EX line with bonded, but I have yet to see anyone run this motor.
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Old 09-10-2007, 12:36 PM   #67
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new 13mm rotor in touring car 5 & 6 cells 3.5T or 4.5T use which gear ratio ?
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Old 09-10-2007, 12:45 PM   #68
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3.5: At Tamiya we ran 8.25-8.5 depending on driver preference

4.5: I would estimate around a 7.6 to start with.
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Old 09-10-2007, 01:39 PM   #69
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Steve or Charlie,
Can you re-dyno your 13.5 with the new 13mm rotor? I am curious to know if the motor generates more watts of power with this new rotor. Since your website says, "improved magnetic material" I'm guessing this will generate a little more power. Therefore our local club will have to take this into consideration when making our rules this year.
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Old 09-10-2007, 06:03 PM   #70
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Originally Posted by kn7671 View Post
Which has me scratching my head as to why some other BL motor makers are introducing their new BL motors with Bonded Rotors and not Sintered Rotors.
Uh, the $5 they save in manufacturing cost on the motor, plus the extra $30 in sales revenue probably has something to do with it.
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Old 09-10-2007, 07:18 PM   #71
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What are the gear ratios for 5 cell on asphalt...

3.5 non 13mm rotor=

10.5 non 13mm rotor=

6 cell 13.5 non 13mm rotor=

Fairly large track 120 ft straight...
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Old 09-11-2007, 06:56 AM   #72
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Uh, the $5 they save in manufacturing cost on the motor, plus the extra $30 in sales revenue probably has something to do with it.
Which is exactly the reason I bought a Novak 13.5 SS GTB system to begin with, I'm not going to fork out an extra $30.00 for a rotor that should have been included to begin with.

Good for Novak, bad for LRP.
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Old 09-11-2007, 08:15 AM   #73
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Originally Posted by Steve Weiss View Post
3.5: At Tamiya we ran 8.25-8.5 depending on driver preference

4.5: I would estimate around a 7.6 to start with.
Is that with 5 or 6 cell? What is the length of the longest straight? 8.25 gearing, my God, those puppies must haul major donkey azz!
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Old 09-11-2007, 08:19 AM   #74
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Originally Posted by kn7671 View Post
Which has me scratching my head as to why some other BL motor makers are introducing their new BL motors with Bonded Rotors and not Sintered Rotors.

In know that Novak offers the EX line with bonded, but I have yet to see anyone run this motor.
Any company that is coming out with bonded rotors in the more aggressive BL motors are asking for problems. Novak realized this and went sintered....FAAAST!. For the milder winds, bonded really isnt an issue. When you get in the 4.5 and 3.5 range, those rotors shatter like they were hit with a hammer.
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Old 09-11-2007, 11:50 AM   #75
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Quote:
Originally Posted by Steve Weiss View Post
3.5: At Tamiya we ran 8.25-8.5 depending on driver preference

4.5: I would estimate around a 7.6 to start with.
Thanks !
But it's 5 cell gear ratio ?
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