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Old 11-19-2007, 04:38 PM   #586
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Default mabuchi

hi,

mabuchis i think are designed for drills and other stuff. i believe designed so that as brushes wear, internal timing is retarded to compensate. meaning the motor is designed to keep same max rpm as the brushes wear down.

i may be wrong, but i think thats why it is faster in reverse rotation. the 0 degree timing is only if you look at it externally. its what happens to timing as brushes wear down...

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Old 11-19-2007, 05:51 PM   #587
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They actually have a little negative timing, which is why they run faster in reverse. Steve is correct, breaking in the brushes too long in reverse rotation will actually make the motor a little slower, and it will get worse as the motor is used.


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Old 11-19-2007, 11:56 PM   #588
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Originally Posted by rccardr View Post
They actually have a little negative timing, which is why they run faster in reverse. Steve is correct, breaking in the brushes too long in reverse rotation will actually make the motor a little slower, and it will get worse as the motor is used.




...and now you know exactly how foolish that was...
Is that why the motors get faster the longer you run them? Maybe they don't, but to me they seem to.
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Old 11-20-2007, 04:16 AM   #589
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so why not break in in forward? then you egt the advanced timing in forwards?
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Old 11-20-2007, 05:28 AM   #590
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Steps To Silver Can Enlightenment:
#11:
Quote:
Is that why the motors get faster the longer you run them?
#14:
Quote:
so why not break in in forward?
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Old 11-24-2007, 03:16 PM   #591
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Default freeze spray

has any one used the freeze spray to cool the motors before racing if so where do you apply it , outside the can or inside it? and what is the best way to run in a new silver can motor???
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Old 11-24-2007, 03:49 PM   #592
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Quote:
Originally Posted by rccardr View Post
Steps To Silver Can Enlightenment:
#11:


#14:
Care to share steps #1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, and anything after 14?
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Old 11-24-2007, 03:56 PM   #593
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Exactly...a shred of info would be great! Something other than dip it in water...I think that has been covered...
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Care to share steps #1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, and anything after 14?
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Old 11-24-2007, 04:41 PM   #594
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Default help

read all the messages and tried most of them but the freeze spray never used has anyone????
the motor seems to be great for 3 mins but the last 2 it slows , i think it is getting hot and slowing it??
would a fan on top of the can help in keeping it cool.
what type of comm drops is the best for output ?

i run the mabuchi type of 540 motor
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Old 11-24-2007, 09:02 PM   #595
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Canned freeze works well in a very warm environment, but according to my test bench equipment it makes the motor live longer, not go faster. Yes, they do slow down somewhat as they get hot.

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Old 11-25-2007, 02:59 PM   #596
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Does anyone know the differences between the silvercan and the blackcan motors??? I'd like to know whether the timing is different or is it just a different wind. How much different are the rpms and the amp draw????
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Old 11-25-2007, 03:12 PM   #597
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i think silvercans are 27t and black cans are 23t. maybe the timing is advanced slightly on the black cans...
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Old 11-25-2007, 05:42 PM   #598
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Correct on both counts:
Silver can = 27 turn, slightly negative timing
Black can = 23 turn, 8 degrees positive timing
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Old 11-25-2007, 06:22 PM   #599
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Thanx for the info. From that I'm extrapolating, but can we expect at least
23 to 24000 and 1.5 amps from a decent blackcan????
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Old 11-26-2007, 05:28 AM   #600
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At what voltage?
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