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Goblin 770 › Aluminum 8mm Motor Mount Third Bearing Support?
11-25-2015 10:47 PM  34 months agoPost 1
ScaleCrazy

rrNovice

Salem, OR-USA

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Curious if there is an aftermarket Aluminum 8mm Motor Mount Third Bearing Support available for the Goblin 770? I have searched numerous forums and websites including the SAB to see if they make one and have come up empty. I have read that some have switched out the 6mm bearing but I'd prefer to not do that. I realize that the 8mm shaft it robust but I'm concerned about premature wear of the motor's bearings. Given this application is for a scale fuselage with a lot of time and money spent on it I'm trying to eliminate as many potential issues as possible. Given my projected weight of nearly 40 pounds I need to step up to a Pyro 800 or 850 on 14S.

Thanks.

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11-25-2015 10:54 PM  34 months agoPost 2
crespo1

rrApprentice

parksville new york

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sab said do not need one for 8mm only 6mm

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11-26-2015 12:32 AM  34 months agoPost 3
ScaleCrazy

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Salem, OR-USA

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Thanks for the reply. I have also heard of quite a few motor bearings going as well! That's a mighty long shaft for that much torque and to put all that on internal bearings seems risky to me.

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11-27-2015 12:59 AM  34 months agoPost 4
Eury

rrProfessor

Dover NH

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I've flown my 700 with a Scorpion 4525-520 Ultimate Mikado edition with 8mm shaft for over 2 years now without any bearings going bad, and I have never oiled them or done any maintenance whatsoever on the motor. Out of curiosity I pulled the motor apart when I was doing a basic tear down for maintenance about a month ago and the bearings are still fine. You're not going to have an issue with your Pyro.

Nick Crego

Citizen #0168

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11-27-2015 03:15 AM  34 months agoPost 5
ScaleCrazy

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Salem, OR-USA

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Cool. Thanks.

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