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Old 01-27-2009, 09:04 AM   #16
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i like this rule of thumb to compare brushed/brushless motors..

(brushed turns /2)+2 = brushless equivalent

for example...

(27/2)+2 = 15.5
(19/2)+2 = 11.5
(7/2)+2= 5.5

to me this formula explains why a 17.5T is slower than a 27T as really its power level is closer to a 15.5T.. also explains why a 10.5T is faster than a 19T, as it probably should be 11.5T thats more closely matched.

but that being said, we run these rules..

27 + 17.5 is stock
19 + 10.5 is superstock
any wind less than allowed in superstock is modified

-Mark
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Old 01-27-2009, 09:55 AM   #17
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Would the size of the wire make a difference???
example
13.5 with small wire will have a smaller coil = less wire = lower resistance.
13.5 with large wire will have a larger coil = more wire= higher resistance.
This example could be the same for any BL or brushed motor.
Is there a standard size wire for Roar BL motors ?

Last edited by Lazer Guy; 01-27-2009 at 10:50 AM.
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Old 01-27-2009, 10:44 AM   #18
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Quote:
Originally Posted by Rick Hohwart View Post
This is correct.
Quote:
Originally Posted by Francis M. View Post
10.5 is going to officially be classified as mod by next year.....

13.5 super stock = 19turn
17.5 stock = 27 turn

We run super stock but its 13.5BL and we allow 27T brushed as an option. When we adopted brushless we did not want to kill brushed off but also did not want to go to new technology and run slower then the old stuff. So thats why we did not allow 19turn.
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Old 01-27-2009, 10:55 AM   #19
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Quote:
Originally Posted by Lazer Guy View Post
Would the size of the wire make a difference???
example
13.5 with small wire will have a smaller coil = less wire = lower resistance.
13.5 with large wire will have a larger coil = more wire= higher resistance.
This example could be the same for any BL or brushed motor.
Is there a standard size wire for Roar BL motors ?
Yes wire size makes a difference but it's the other way around. While larger wire will mean a larger coil, the larger wire has MUCH lower resistance and therefore the coil will have lower resistance. In other words, bigger wire=faster.
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Old 01-27-2009, 01:54 PM   #20
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Quote:
Originally Posted by mok View Post
i like this rule of thumb to compare brushed/brushless motors..

(brushed turns /2)+2 = brushless equivalent

for example...

(27/2)+2 = 15.5
(19/2)+2 = 11.5
(7/2)+2= 5.5

to me this formula explains why a 17.5T is slower than a 27T as really its power level is closer to a 15.5T.. also explains why a 10.5T is faster than a 19T, as it probably should be 11.5T thats more closely matched.

but that being said, we run these rules..

27 + 17.5 is stock
19 + 10.5 is superstock
any wind less than allowed in superstock is modified

-Mark
I like that formula...its pretty close 10.5 and lower. However, 17.5 with the newer esc's that boost the timing HAUL compared to a 27 turn brushed.
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