Thread: Discussion Multiplex Funjet Ultra
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Old Oct 11, 2012, 07:12 AM
moparmyway is offline
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Why the dirt on the wings?
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Quote:
Originally Posted by moparmyway View Post
- measurements between phases and each motor differ
-#1 has resistances of 0.0116 / 0.0126 / 0.0134 (2 poles) (averaged to 0.0125)
-#2 has resistances of 0.0128 / 0.0138 / 0.0132 (2 poles) (averaged to 0.0133)

#1 weighs in at 8.875oz
#2 weighs in at 8.835oz

- stated resistance of 0.011
Quote:
Originally Posted by moparmyway View Post
No bullets:
#1 motor ......... 8.755oz ..... 2085kv actual ..... 0.0122 milli-ohms resistance (2 poles)
#2 motor ......... 8.720oz ..... 2100kv actual ..... 0.0121 milli-ohms resistance (2 poles)


Dudes,
The differing resistances between phases with HC 3.5mm bullets attached would have meant disaster sooner rather than later for the #2 motor.

The higher resistances in those bullet connector solder joints would have played havoc with the ESC trying to get smoothe controll on the RPM's.. For sure, the 2 connections that were higher resistance (due to the soldered bullets) would have resulted in more heat at the connection and probably a burned lead in flight at higher power levels.

I think it was sandman (not sure, so correct me if I am wrong) that stated he oils his bearings after CA'ing his magnets on his HC motors, right out of the box .............. I hope everyone adds the important step of re-soldering their bullets if they plan on using the stock ones !!!!!!!!!!!!
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