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Post by cokebuck on Jul 12, 2009 5:38:15 GMT 1
Been using name brand motors E-flite, RimFire, Axi. We're talking $60 to $100 for 28mm to 42mm diameter. Finally ordered the drastically cheaper Turnigy motors yesterday $15 to $24 !!! Anyone know if they're any good?
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Post by patmatgal on Jul 12, 2009 7:53:24 GMT 1
Haven't tired the Turnigy but at that price it's worth a shot. I've stuck with the Park Zone and E Flite motors but since I just lost a Power 10 I picked up a Power Up 480 Plus from here www.headsuprc.com/servlet/StoreFront (1/3 the price of the Power 10) ;D |
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Post by SCC on Jul 12, 2009 10:26:18 GMT 1
I have been using a Turnigy in my Ripmax Spit for over a year, I also have one in a Great planes Corsair. They are fantastic for the price. My mate also uses them in his models without any problems.
I have had a couple of bent shafts on hard belly landings but thats all.
It's worth ordering a couple of spare shafts.
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Post by flydiver on Jul 12, 2009 17:39:57 GMT 1
Brush-less motors are pretty simple- a stator wound with wire and a shaft+can with magnets glued on spinning on bearings. As motors cheapen up something has to give. The stator is made up of iron in small slices. Cheaper stators have thicker slices of less 'magnetic' iron. Wire can get cheaper, thinner, and less heat resistant insulation. Bearing get worse quality (common), or smaller (less load and shock capability). Shafts may get smaller diameter and/or softer material. Easier to machine but worse for you as they bend easily. Magnets can get weaker and less heat resistant. Overall machining is less exact (air gap = distance from stator to magnets), bearings fit in receptacle more sloppy, winding of the stator is often WAY more sloppy, and overall assembly may not be as good. Little cuts add up to decreases in reliability and efficiency. Does it matter? That's up to you and how fussy you are. If you are a frequent crasher or just a 'hobby' flier, most likely not. You give up some efficiency and potential longevity but the average guy won't even be able to tell (I'm in that category). The 'poster child' for cheap motors that still run OK is TowerPro. I don't have personal experience with Turnigy other than tiny ones so can't comment. The Power Up motors seem to be OK. Not great bearings. Cheap often means HC orders and cheap means quality assurance is lacking. If you get a junk motor-well you eat it. Repair is probably unlikely and getting parts is difficult. Edit- Some other folks having a similar discussion: www.wattflyer.com/forums/showthread.php?t=48252 |
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