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Old 05-08-2012, 06:12 AM   #1 (permalink)
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I have some black residue on my main gear and after reading posts which suggested I take out the motor and check something. Anyways when I went to unscrew the screws one them just wouldn't budge so I applied ample amount of pressure til the screw striped at head. Any suggestions on how to remove this screw?
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Old 05-08-2012, 09:14 AM   #2 (permalink)
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I had the exact same thing happen last night. There is a tremendous amount of threadlock and adhesive on that motor mount and screws and I stripped one of the screws holding the motor before I got more creative. On the one you haven't stripped, I had luck heating it with a soldering iron to break down the threadlock and then it came out with minimal force.

With regard to the screw that was stripped, someone may have a better suggestion that doesn't destroy the screw, but my solution was to take my dremel and cutting wheel and grind a slot into it to be able to use a larger flat head screwdriver to remove. Be careful doing this as the motor mount is pretty soft aluminum. I ground a slot into it, heated it with a soldering iron to break down the loctite and then was able to remove it with somewhat minimal force.

I had a spare hardware set for the heli that had 2 extra screws in it for the motor so I wasn't as worried about destroying one of the screws but I suspect you might not have a choice if it is stripped. It's a good thing to check it was a bearing that had seized on the shaft and was causing the residue. Good luck.
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Old 05-08-2012, 03:37 PM   #3 (permalink)
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Thanks for that Chris next time I head to the Hobby store I like ask them, as I still to purchase new screws for it. so I will just fly it like this for the time being.
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Old 05-08-2012, 08:57 PM   #4 (permalink)
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All right, that does it. I'm starting yet another heli blog since so many reoccurring events and problems keep getting brought up. Might be too late for yours but I went to the hardware store and hobby shop for the real small stuff to invest in quality wrenches. I own a couple dremels and almost went drilling away but thought I'd try a different wrench set first and to my amazement it came right out even though one was a little stripped. For as soft as the screws are, I think the keys that came with the heli are softer.
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Old 05-09-2012, 01:16 AM   #5 (permalink)
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I just may try that
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Old 05-09-2012, 01:34 AM   #6 (permalink)
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I did it, I stripped one of the screws trying to get it out. I grabbed it with a large set of pliers
and unscrewed it. Flattened out that shiny little washer thing as well. Now I will have to find a new one. I'm sure I will have to dish out $50.00 on a rebuild kit!
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Old 05-09-2012, 05:10 AM   #7 (permalink)
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Quote:
Originally Posted by Imzzaudae View Post
I did it, I stripped one of the screws trying to get it out. I grabbed it with a large set of pliers
and unscrewed it. Flattened out that shiny little washer thing as well. Now I will have to find a new one. I'm sure I will have to dish out $50.00 on a rebuild kit!
They got the aluminum motor mount set @ HH $8.99
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Old 10-18-2012, 10:36 AM   #8 (permalink)
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Default Black residue on main gear

Did you find out what was causing the black residue? I suspected it was from the belt drive. Is it normal?
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Old 10-18-2012, 06:30 PM   #9 (permalink)
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This happened to me too.
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Old 10-18-2012, 08:34 PM   #10 (permalink)
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FYI the easiest way to get these screws out is to heat up the screw by setting a soldering iron on the head for about 30 seconds, then using good tools (like dynamite or similar) turn out the screw. This may take more than 1 heat cycle since the thread locker will set up as it cools. I removed the ESC and slightly drilled the corners of the frame to allow a straight shot at the screws.

Hope this helps somebody!
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Old 10-22-2012, 12:34 PM   #11 (permalink)
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Default Black Residue on main gear

I spoke with customer service at HH, and it is most likely extra oil from the one way bearing getting slung out.
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