Tail Motor Overheating

Prof. Penguin · 05-03-2012, 08:11 AM

I had the Mcpx out yesterday and all was well until about 4 min into the flight I was hovering when the heli went into a full on, no tail rotor, death spin...

I picked it up, brushed it off, and spooled up in my hand to check out the tail motor and everything looked fine; the motor plug was fully inserted, rotor was spinning, no binding, no smoke in the canopy region.

I put it back up in the air and about a minute later it did it again. I was properly baffled at this point until I felt the tail motor which was extremely hot. I let it cool down, double checked to make sure there were no shorts in the wires or anything else visible and it flew for about four minutes until it heated up again and went down.

I have probably between 50-150 flights on this tail motor which doesn't seem to be a whole lot but perhaps its wearing out. Is overheating a normal characteristic of worn-out brushed motors? Should I just replace it and call it a day? Is there anything else that could be causing it to overheat?

I was thinking about replacing it with a mcx2 ccw motor, is that still the best choice? I really don't mind spending the extra 5$ for a stock tail motor if they are any better. Thoughts?

Thanks guys!

Naito · 05-03-2012, 08:15 AM

Mcx2 ccw motor and a longer boom will do wonders.
HH themselves released a stock long boom version not long ago, I don't remember the part number for it tho. If. You get another complete boom, make it the extended version.

tommy217xxx · 05-03-2012, 08:18 AM

I'm pretty sure my tail motors dont really get to hot, maybe a little warm. I've always used the stock tail motor on a brushed setup. I use the mcx2 motors on my dual coreless tail setups. I think it is the CCW motor but I'm not really to sure on that.

CrashandBurn · 05-03-2012, 08:30 AM

I actually took apart my tail motor last night,the brushes are microscopic. I'm surprised how long they do last.

Prof. Penguin · 05-03-2012, 09:21 AM

Naito: I have an extended solid boom and it does indeed rock. I think a Mcx2 ccw is what I will upgrade to.

CrashandBurn: Would worn brushes cause a motor to overheat?

05-03-2012, 08:11 AM	#1
Prof. Penguin Registered Users Join Date: Jan 2012 Location: Rochester, NY	Tail Motor Overheating I had the Mcpx out yesterday and all was well until about 4 min into the flight I was hovering when the heli went into a full on, no tail rotor, death spin... I picked it up, brushed it off, and spooled up in my hand to check out the tail motor and everything looked fine; the motor plug was fully inserted, rotor was spinning, no binding, no smoke in the canopy region. I put it back up in the air and about a minute later it did it again. I was properly baffled at this point until I felt the tail motor which was extremely hot. I let it cool down, double checked to make sure there were no shorts in the wires or anything else visible and it flew for about four minutes until it heated up again and went down. I have probably between 50-150 flights on this tail motor which doesn't seem to be a whole lot but perhaps its wearing out. Is overheating a normal characteristic of worn-out brushed motors? Should I just replace it and call it a day? Is there anything else that could be causing it to overheat? I was thinking about replacing it with a mcx2 ccw motor, is that still the best choice? I really don't mind spending the extra 5$ for a stock tail motor if they are any better. Thoughts? Thanks guys! __________________ Mcpx - Extended tail boom, Grommet mod EXI 450 Pro - Spartan Quark, AR7000, Hobbywing Platinum 40A, Turnigy Typhoon

05-03-2012, 08:15 AM	#2
Naito Registered Users Join Date: Aug 2010 Location: Canada	Mcx2 ccw motor and a longer boom will do wonders. HH themselves released a stock long boom version not long ago, I don't remember the part number for it tho. If. You get another complete boom, make it the extended version. __________________ NanoCPx - Bone stock! mSRx BL - BLHeli 6.1-multi, XP3a/HP03s mCPx "stock"-BL - BLHeli 4.0, XP3a dbl-fet/C05m 8T mCPx "super"-DualBL - BLHeli 4.1, XP7a(3xFET)/HP06v2/8T, XP3a/HP03t,3xSPMSA2030L 2.3g servos

05-03-2012, 08:18 AM	#3
tommy217xxx Registered Users Join Date: Mar 2011 Location: Mi	I'm pretty sure my tail motors dont really get to hot, maybe a little warm. I've always used the stock tail motor on a brushed setup. I use the mcx2 motors on my dual coreless tail setups. I think it is the CCW motor but I'm not really to sure on that. __________________ MCPX BL(#1 V1 Hp05s/120SR tail, V1 C05m/Dual coreless tail) Nano cpx stock Trex 450 Pro, Spektrum Dx6i, Phoenix

05-03-2012, 09:21 AM	#5
Prof. Penguin Registered Users Thread Starter Join Date: Jan 2012 Location: Rochester, NY	Naito: I have an extended solid boom and it does indeed rock. I think a Mcx2 ccw is what I will upgrade to. CrashandBurn: Would worn brushes cause a motor to overheat? __________________ Mcpx - Extended tail boom, Grommet mod EXI 450 Pro - Spartan Quark, AR7000, Hobbywing Platinum 40A, Turnigy Typhoon

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05-03-2012, 08:30 AM	#4
CrashandBurn Registered Users Join Date: Sep 2006 Location: BC MN	I actually took apart my tail motor last night,the brushes are microscopic. I'm surprised how long they do last.