Kev Greenwood Posted January 18, 2013 Share Posted January 18, 2013 put a brand new 50-60 380kv NTM propdrive motor from hobbyking onto the front of my slipstream MXS 74inch, run it up to test if for Watts, and 3 magnets came loose scraping the backplate. Took it apart and pushed them back and applied thin cyno all around the magnets, put it back together, stuck watt meter on, read 1480 watts then motor ground to a halt, ALL the magnet came loose, this is the second NTM motor that ive had with the magnets comeing loose, they are total rubbish i would advise people to keep away from them. really fed up!!!! Kev Quote Link to comment Share on other sites More sharing options...
Simon B Posted January 18, 2013 Share Posted January 18, 2013 Get an XYH motor from Giantcod/Shark. Cheap as chips and no dropping of magnets in the ones i've had! Quote Link to comment Share on other sites More sharing options...
Codename-John Posted January 18, 2013 Share Posted January 18, 2013 Ive been running an NTM motor for 2 years in my wot 4 foam e, its been perfect Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted January 18, 2013 Share Posted January 18, 2013 i have 3 prop drive motors and have had no problems yet. Quote Link to comment Share on other sites More sharing options...
Simon B Posted January 18, 2013 Share Posted January 18, 2013 I've found the most problematic motors i've had were KMS ones... Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted January 18, 2013 Share Posted January 18, 2013 Sounds like you might have been unlucky enough to have a bit of a "Friday afternoon special" kev! It shouldn't happen of course - but we all know it does sadly! BEB Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted January 18, 2013 Share Posted January 18, 2013 That's the second one Kev bought that shed magnets before getting airborne ,must admit it did put me off ,but these motors are so cheap by comparison to AXI Hacker etc , you normally come out well on the winning side in terms of money spent ......well I have as my fleet of 50 plus all run well and have done for several years. And they don't sit in the hanger for long before it's another ones turn to be dragged kicking and screaming to the field. Tom. Edited By Tom Wright 2 on 18/01/2013 23:47:36 Quote Link to comment Share on other sites More sharing options...
Simon B Posted January 18, 2013 Share Posted January 18, 2013 I dunno, if you factor in postage costs of, say, 4 faulty motors would be around the same cost as a hacker... Edited By Simon B on 18/01/2013 23:49:26 Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted January 18, 2013 Share Posted January 18, 2013 Fair comment Simon but what would 50 Hackers cost against 50 Turnigy ,even if four turned out to be duff ? Tom. Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted January 18, 2013 Share Posted January 18, 2013 Posted by Tom Wright 2 on 18/01/2013 23:54:38: what would 50 Hackers cost against 50 Turnigy ,even if four turned out to be duff ? Outsiders must find us bizaire at times! We really do have a language all of our own don't we! Can you imagine saying that down the pub! BEB Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted January 19, 2013 Share Posted January 19, 2013 I am Bizarre at the best of times , don't even need to go to the pub to get like that ! Your right BEB even I had a smile at my own words ,after you highlighted them. Tom. Quote Link to comment Share on other sites More sharing options...
ken anderson. Posted January 19, 2013 Share Posted January 19, 2013 hello kev...i use epoxy when any of mine have come adrift....to save money...borrow some motors off young TW2 ....... he's got a few by the sound of it..... ken anderson....ne..1 ...how to save dosh dept.... Quote Link to comment Share on other sites More sharing options...
David Molineux Posted January 19, 2013 Share Posted January 19, 2013 I read somewhere that the E-Power motors at Giant Shark are actually unbranded E-Max ones. No idea if that's true but the ones I've had have been cheap as chips and worked brilliantly. Definately recomended. I must admit, I've not bought from H K yet. Dave Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted January 19, 2013 Share Posted January 19, 2013 Yes David I think your right . I find them robust and trouble free. Tom. Quote Link to comment Share on other sites More sharing options...
Kev Greenwood Posted January 20, 2013 Author Share Posted January 20, 2013 i have put a complaint into Hobbyking about the motor, as usual they asked for pictures, video footiage, a DNS and stool sample!!!!! what my setup is etc etc..... Im wondering if its worth the hassle....but its a $60 motor and rather than waste $60 i could put it towards something decent. However TW2 aka uncle Tom had sold me a Turnigy 50-65 motor which runs superb but it wont give me as much power as the NTM motor (on paper). If i dont get anywhwere with hobbyking, i will have a go at glueing the magnets back in with JB weld and give it another go, but if they give me my cash back, i will have a nice big fat Turnigy ESC..... Kev Quote Link to comment Share on other sites More sharing options...
Glyn R Posted March 17, 2013 Share Posted March 17, 2013 XYH motors are rebranded Turnigy Edited By Glyn R on 17/03/2013 23:08:10 Quote Link to comment Share on other sites More sharing options...
Martian Posted March 18, 2013 Share Posted March 18, 2013 50 planes Tom how big is your hanger !! I've got an NTM it's been run at max but as yet unflown OK so far. Martian Quote Link to comment Share on other sites More sharing options...
Piers Bowlan Posted March 18, 2013 Share Posted March 18, 2013 On the HobbyKing (international) Website there is a lot of negative feedback about the NTM motors in general, especially stories of magnets coming loose but a good deal of positive reviews on the Turnigy SK motors. Might be a clue there! Quote Link to comment Share on other sites More sharing options...
Erfolg Posted March 18, 2013 Share Posted March 18, 2013 I have fixed one (only one, so not an expert) motor for a club member where a magnet had come loose. It was apparent that the magnets seemed to be held in place with either a thin resin or hi viscous cyno. The rest appeared secure, although, looking at where the losse magnet came from, it was not obvious why. A good number of years back i had read how to assemble your own motor. In this case spacers were inserted between the magnet to space them. Then cynoed in place, to secure. As part of my repair I decided to insert balsa spacers and then secure with thick/hi visc cyno. I did this in sections. I then trimmed back the sticky up bits of balsa. This caused far more issues than I thought. It turns out that the Swan Morten Scalpel blades are either not stainless steel or at least not Austinetic. As it turns out are all small kitchen knives. In the end, I decided to use a stick, with aluminium oxide grit attached, to sand down the stickey up bits. I washed in water and left overnight sat on top of a radiator. I had considered just using the knife, without any drawing action, so as not effect the magnetism. I also took care to place and lift the motor off the radiator by lifting straight off, with a card separator. All just in case. Any way, it worked, and is not as involved as my writing. Quote Link to comment Share on other sites More sharing options...
john farrell Posted August 2, 2013 Share Posted August 2, 2013 I have only ever had 1 motor chuck magnets and that was an AXI 2820/10 - so much for buying quality motors. All my Keda's, XYH, NTM and other cheapies are running just fine - go figure? Quote Link to comment Share on other sites More sharing options...
iqon Posted September 27, 2014 Share Posted September 27, 2014 Just got ntm motor, hoping they would have improved or at least i might get a good one...no such luck, 2 flights & 5 lose magnets, should have known better.....surely they must make some good ones now and again.... Quote Link to comment Share on other sites More sharing options...
steve c Posted September 27, 2014 Share Posted September 27, 2014 Ive got 4 or 5 of these motors of various sizes some are a couple of years old all still working as they should be Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted September 27, 2014 Share Posted September 27, 2014 I have an O.S 52 surpass, it has done 390000 miles on the same plug and runs for 3/4 hour on a thimble full of Bekra 10. It's the future John Quote Link to comment Share on other sites More sharing options...
Countryboy Posted September 27, 2014 Share Posted September 27, 2014 I have been running NTM motors in my boats and hovercraft since they first came out and have never had a problem unless you count wearing out shafts after hours of full throttle running. I think they are a great value motor and better than the price suggests. If you want super long life then buy a top quality item, if you want reliable steady motors then NTM are fine by me. You only get what you pay for !! Quote Link to comment Share on other sites More sharing options...
Tim A Posted September 28, 2014 Share Posted September 28, 2014 No problems with here, lots of our people use them in espc. in quads. Problems may arise as with all leccy motors if you try to get to much out of them. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.