LS motor performance probs - RC Groups
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Apr 20, 2001, 08:18 AM
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LS motor performance probs

I recently had to purchase a replacment motor for my LiteStik as my original motor suffered a literal high-temp "meltdown." The new motor has a slightly different gear mechanism but doesn't seem to attain the necessary RPM's to fly the plane. Any help would be most appreciated.
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Apr 20, 2001, 08:35 AM
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What type of battery pack are you using?
Apr 20, 2001, 08:48 AM
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Steve McBride's Avatar
There are about 5 or so different litestik gearboxes available. They are actually 'GWS DX-A, B, C, D, E, etc.' If you have the original packaging for the motor/gearbox, there should be a recommended prop range. You probably picked up a unit designed to swing a larger prop.

Let us know what you find!

Steve McBride
Apr 20, 2001, 09:11 AM
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I am using a 6-cell NiMH pack which worked great with the original motor swinging the original prop. The new motor I believe is the E type as I recall the last box on the package being marked.
Apr 20, 2001, 11:22 AM
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Mark Wood's Avatar
Bingo! The LS comes with an "A" pinion at 5:1 ratio. The "E" is considerably higher. Look at the back of the packaging for the recommended prop.

Apr 20, 2001, 03:15 PM
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Fred Bronk's Avatar
6 cells nimh is also on the border for the LS. You may want to try 7 or even 8 cells if you stay with nimh.
Then try an APC prop of the same size. They seem to work much better than the GWS props!
Apr 21, 2001, 01:24 AM
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Man, you guys are awesome. I wish I was half as smart as you. I will let you know how things work with the correct prop.
T. S. Derse, MD
Apr 21, 2001, 02:35 AM
Flying slowly along..
I use 8 nimh cells on mine. I've got about 20 flights on this motor with no burn problems. Shame on me though, I had to steal the radio gear off of it tonight for my first scratch built. I'll prolly crash it right away and put the gear back on my Stick ---Rob
Apr 21, 2001, 04:40 AM
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Mark Wood's Avatar
Originally posted by tderse:
Man, you guys are awesome. I wish I was half as smart as you.
Stick around, Grasshopper. Many of us found our enlightenment right here.
My package says use a 12x6 for the E drive, but I think I'd bump the batt pack to 7 Nicads or 8 cells of Nimh and swing an 11x4.7 maybe? I run the A drive in my LS with 8x500 AAA NiMhs and a 10x4.7 APC. Great flyer and no problems with burnt motors yet after ~20 flights like slowflyer. Got a carbon brush motor sitting here waiting for the inevitable, though.