Aug 21, 2012, 01:10 PM
Ahh, that's it -- the whole bearing is gone out of the back so the shaft has nothing to locate it... I'm tempted to just put in another similar spec motor as I expect parts for this are few and far between!

Thanks for the help!
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Aug 21, 2012, 01:28 PM
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crucial's Avatar
I've replaced the bearings in mine once already so replacements are out there.

If I remember right this is the rear bearing.
Aug 21, 2012, 01:35 PM
hmm, you think even though I whacked the curb with it, popping in a new bearing will solve my problem? I kinda think there might be other issues?
Aug 21, 2012, 01:49 PM
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crucial's Avatar
I would definitely inspect the shaft for straightness and make sure the magnets are secured ok. I admit it's easier to order a new motor and not worry about it but I have a few bearings on hand that I can use to test things without ordering stuff. You could order a new motor and some bearings and if your old one runs ok you have a spare for not a lot of money. Headsuprc's shipping is $2 and is a great shop to buy from. I'm sure there is a suitable motor their to replace the stock one.

Both of these look similar to the stock motor in my plane. You might not be able to use the stock spinner but power wise they should be close.
Aug 21, 2012, 02:22 PM
Yeah I looked at that second one already. Looks about right, but amp draw is a little high? And form what I've read, the esc's in these SkyTrainers are kinda iffy from the get-go.
Aug 21, 2012, 03:15 PM
Registered User
crucial's Avatar
I replaced the stock ESC right away. I saw one go up in flames and almost took out the plane. Ideally you would want an 850-900kv motor to match the stocker. The stock motor is like a bit of a hybrid. The motor mount holes are spaced out like a 450 class motor but the motor is sized like a 480 or power 10. This one looks like it might be adequate with a little less power than the bigger power 10.

Hobbyking motors - accessory pack for NTM motor
Last edited by crucial; Aug 21, 2012 at 03:22 PM.
Aug 21, 2012, 03:24 PM
Wow, thanks for the research! Is there a recommended replacement prop for this plane? I do like the 3 blade very much, I see where the original is no unavailable.

Thanks again for the help!
Aug 21, 2012, 03:28 PM
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crucial's Avatar
I use the Parkzone BF-109 3 blade prop. It draws about 10 more amps than stock but I like the performance.
Aug 21, 2012, 03:51 PM
I live my life 12oz at a time
arnav's Avatar
I have a few shafts from headsuprc waiting downstairs in the mailbox in an attempt to convert the stock motor from the proprietary prop adapter to collet style. I'll let you all know how it goes...
Aug 22, 2012, 08:45 AM
Well, I like the idea of the different prop, but I guess I'll have to check and see if I can throw a different esc on there too... seems to me I have another one or two in my basement! Thanks again for the help.

When I get the new set-up in, I'll offer up the old one to anyone who thinks they can fix it :-)
Aug 22, 2012, 12:25 PM
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crucial's Avatar
I do have the bearings in a drawer here. I wouldn't mind taking a shot at getting it running.
Old Aug 24, 2012, 06:02 PM View Post
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Aug 24, 2012, 08:56 PM
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crucial's Avatar
Looks neat but it costs more than the plane.
Aug 24, 2012, 09:52 PM
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ny_hawk's Avatar
Originally Posted by crucial View Post
Looks neat but it costs more than the plane.
Totally. Something best used with a serious scale project... The ST just doesn't need the extra weight, cost and current draw IMO.
Aug 27, 2012, 02:45 PM
Anybody have a reasonable source for a new prop for this plane?

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