Quote:
Originally Posted by fastbaja5b
Now will that improve the efficiency I am seeing (obviously not KV as that is Stator based?), or with it being the magnets as you stated, will putting in a rebuild kit bring this HPI motor to the same spec as the 3800 Castle?
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If you change the rotor, the kV will drop because of the stronger magnets in the CC rotor.
The efficiency of the motor will go up slightly, but still won't be as good as the CC3800 motor because of the difference in the stator lamination thickness. Thicker laminations = lower cost = higher iron losses = higher maximum flux density. Thinner laminations = higher cost = lower iron losses = lower maximum flux density.
The .2mm laminations in the CC motor are rated at 150watts loss / kilo @10khz, the .35mm laminations in the HPI motor are rated at 230watts loss / kilo @10khz (for comparison.) But the .2mm laminations are three times as expensive as the .35mm laminations.
Both perform well. But the .2mm laminations have a small advantage in high speed motors, at a large cost disadvantage.
We make both .2mm and .35mm lamination versions of many of our motors. Really depends on whether the application and cost target can justify the extra expense for the thinner laminations.
All of the CC branded motors use .2mm laminations. For OEM motors, some use .2mm laminations, some use .35mm laminations. Really depends on the application.
Thanx!