HobbyKing.com New Products Flash Sale
Thread Tools
Old Oct 05, 2002, 10:28 AM
Registered User
Manchild's Avatar
Seattle, Washington
Joined Sep 2002
759 Posts
My EPU-6 (DX-A) Motor Died After 2 Weeks?

Is it normal for the EPU-6 motor to die so quickly? I flew every day for at least 30 minutes for 2 weeks...that's only 7 hours! Is this normal?

Do I need to "break-in" the EPU-6 before using?

Thanks for your help!
Manchild is offline Find More Posts by Manchild
Reply With Quote
Sign up now
to remove ads between posts
Old Oct 05, 2002, 11:42 AM
Tee Sqaured
Thomas Manson's Avatar
Langley, B.C, Canada
Joined Jun 2001
4,548 Posts
are you useing a heat sink? it realy depends on where you live too. if you live in a hot climat, then 7 hours might be normal.also, if your running more than 6 cells, they tend to where out faster. as for breaking them in, i don't know, my motor has about 15 hours of run time and she's fine.
Thomas Manson is offline Find More Posts by Thomas Manson
Reply With Quote
Old Oct 07, 2002, 12:59 PM
Registered User
BEC's Avatar
Auburn, Washington USA
Joined Jan 2001
12,946 Posts
Are you using a heat sink? How many cells?

Seven hours is kind of on the low end of what one would expect with these motors, but not totally unreasonable if it's running warm.
BEC is offline Find More Posts by BEC
Reply With Quote
Old Oct 07, 2002, 01:24 PM
Live to ride... and fly!
Tres Wright's Avatar
Forney, TX
Joined Mar 2002
15,165 Posts
The GWS CEO stated that 7-8 hours is the normal lifespan of the little DX motors. Most people manage to get more than that out of them, but if you're flying for 30 minutes straight every time you fly you're letting the motor get pretty hot. You can extend the life of the motor of you let it cool off every 10 minutes by either landing or throttling way back in the air. Also as the others have mentioned you need to run a heat sink if you're not already. Especially for extended run times.
Tres Wright is offline Find More Posts by Tres Wright
Reply With Quote
Old Oct 07, 2002, 09:42 PM
Registered User
Walled Lake, MI, USA
Joined Feb 2000
11,182 Posts
Tres, I recall him saying ~10 hours lifespan on average. But GWS is pretty conservative on their ratings, so I suspect that the average IPS motor probably lives a little longer than 10 hours. When you throw in all of the manufacturing variables and mix them in with different battery packs, flying styles, etc., it makes sense that some will only live a few hours while others will soldier on for an entire flying season.
Dave Hederich is offline Find More Posts by Dave Hederich
Reply With Quote
Old Oct 07, 2002, 10:01 PM
Registered User
mattk17's Avatar
Joined Jul 2001
1,656 Posts
I think there is some variability in the little dx-a motors. For what it is worth, I put over 200 flights on one of my original black endcap dx-a motors.

My grey endcap motors seem to last about 100 flights but I burnt out one of the grey endcap motors in less than 50 flights. My average flight is between 5-8 minutes and I always have a heatsink on and wait a few minutes between flights. I also break my motors in by lubricating with an extremely fine synthetic lubricant designed for firearms.
mattk17 is offline Find More Posts by mattk17
Reply With Quote
Old Oct 07, 2002, 11:47 PM
Plane hugging cat
Vonbaron's Avatar
Mackay Queensland Australia
Joined Sep 2001
1,355 Posts
Just to muddle the BTBF of the IPS a little more I thought GWS stated 13 hours?

In reality there seems to be wild variations of motor life.

My first IPS has over 21 hours on it but the cell count I drive it on is between 5 and 6 lately.
Vonbaron is offline Find More Posts by Vonbaron
Reply With Quote

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Does Lipos lost their charge after 2 weeks? tnsfrk Batteries and Chargers 5 Nov 08, 2004 09:24 PM
My switchback's GWS 300C motor died after 3 flights Biggles604 Power Systems 21 Feb 12, 2003 12:10 PM
WANTED - Your Used EPU3 (S2) or EPU 6 (DX-A) Gearbox! Seattle Area Manchild Aircraft - Electric - Airplanes (FS/W) 0 Oct 12, 2002 04:34 PM
Found my Ky F16 after 8 weeks BioHazard Electric Ducted Fan Jet Talk 18 Sep 16, 2002 06:15 PM