Hey Guys, Just curios about how hot your motors run. Ours run sometimes to the point where you can't touch them more than a few seconds without it burning you. THis is after a 6-7min flight. The outside air temps are hot too though, 100*-110*F. Is this ok or is this a sign of something else we need to look at... Also what about motor maintenance? Is there anything special I should be doing to keep the motors in tip-top shape? Thanks guys! Josh
On my 3d helis I oil my motor bearings usually every time I fly them...so say I fly 5 flights one day, I will drop some oil on each bearing when im done. Oiling every 5-10 flights I think would be plenty, some people dont do anything at all. As far as temps, do you have a temp gun? Anything under 180 and your fine for brushless motors, especially in 100 degree ambient.
Odd. My motors are room temp, even after 18min flights (no payload). Have not tried with much payload yet, but it seems they will get a lot hotter with a payload. Hmm. Any answers to the question above, what are the normal / safe motor temps?
Josh Here's some testing results I did with a 5s vs 4s battery. I did take the motor temps but forgot to record them. If I remember correctly the motor temps were warm to the touch but not to hot to hold. I'm more concerned about the BL temps. Add another 20 degrees F and I don't think I can cary the load with the current setup. (standard MK OctoXL and BL 2.1 controllers, QC motores, APC 14x4.7 props).
Wow Gary! That is not what I was expecting temp wise! I figured you would have slightly lower temps because the current is overall lower... I have had one BL hit 105* C and then quickly landed. Since I have added the alum. coolers the temps are back under control. Thanks for the info! Josh
Hi all, On the maintenance topic I've had the same questions relevant to the QC motors and necessary maintenance. One thing I have noticed is that one of my motors sounds much different then the others and can clearly be heard when I turn off power after each flight. As the props slow to a stop I hear a low pitch ticking noise. Sounds like a hollow metal scratching sound (for lack of a better word) Motors on my CS8 are only a couple months old but heard this noise pre 1st flight. Could be a bearing? Not sure how to address the sound and if this is systemic to a bigger problem I may have down the road if I don't do anything about it. Any input greatly appreciated. Thanks!
Does anyone from Quadrocopter.us monitor this forum? The proper maintenance of the QC motors is a good question...