RC-Monster Forums - View Single Post - just installed BL-WOW-now problem

sleebus.jones · 05.17.2008, 02:30 PM

I've found that BL motors, if they aren't secured, will cog when you power 'em up. I think it's because the ESC tries to kick the rotor, and instead of the rotor moving, the case tries to roll around the rotor, and yes, it will cog. Hold that sucker down tight and see if it does the same thing.

As for blown phases, if you have an ohmmeter, check the resistance between the phases. You should get the same reading within 10%. If you have a lab-type power supply, you can do a similar test, except you set the power supply up to supply 8A of power through each phase. The voltage reading should be within 10% here too. The first way is a good quickie test. The second way is more of a load test, it may show differences you won't see with the first method.

	(#63)
sleebus.jones I like chocolate milk Offline Posts: 650 Join Date: Dec 2005 Location: Houston, TX	05.17.2008, 02:30 PM I've found that BL motors, if they aren't secured, will cog when you power 'em up. I think it's because the ESC tries to kick the rotor, and instead of the rotor moving, the case tries to roll around the rotor, and yes, it will cog. Hold that sucker down tight and see if it does the same thing. As for blown phases, if you have an ohmmeter, check the resistance between the phases. You should get the same reading within 10%. If you have a lab-type power supply, you can do a similar test, except you set the power supply up to supply 8A of power through each phase. The voltage reading should be within 10% here too. The first way is a good quickie test. The second way is more of a load test, it may show differences you won't see with the first method.