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#1
01-29-2025, 10:20 AM
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Sony EV-C3 cracked gear
My Sony EV-C3 recently started kicking and eating tapes. I discovered a cracked gear (pictured) that is part of the loading chain for the video cassette. What would be the best way to go about repairing this?
Last edited by Devicemodder; 01-29-2025 at 10:29 AM. 
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#2
01-29-2025, 01:12 PM
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Honestly look for another machine. The gears were almost always made of "duralon" a type of nylon which doesn't take well to adhesives. I worked in plastics molding for many years with this dreaded resin and have nothing nice to say about it. I know there were some solutions posted on YouTube about how to go about reproducing plastic gears and such and there might be someone who could 3D print this.
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#3
01-29-2025, 03:17 PM
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With a similar gear on a GE radio, I pulled off the broken gear, clamped the crack tight with a visegrip pliers, gluing it together with Superglue. I then used a tiny round file to bore it out a little so it would fit back over the metal shaft, then glued it to the shaft.
Good luck. .
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#4
01-29-2025, 08:26 PM
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I've tried super gluing cracked Sony VHS deck gears and they always break again within a short time. One thing I have thought of is there are silicone molds that can hold up to low melting point metals like tin. I've thought about making a mold of the glued gear then casting a new one out of the ingots of used solder I've got... haven't gotten to it yet.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4
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#5
01-30-2025, 05:06 AM
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| Audiokarma |
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#6
01-30-2025, 01:49 PM
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Update: I have fixed the gear. Ended up just measuring and 3D printing a new one. Seems to work alright.
Last edited by Devicemodder; 01-30-2025 at 01:54 PM.
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#7
01-30-2025, 03:45 PM
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Nice job on the 3D printing!
One way I've fixed them is to cut a thin groove around the gear and then wrap it tightly with a good strong string. Upholstery thread works good. While the string is still under tension, soak the wraps with superglue and leave it till it's set.
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#8
01-30-2025, 05:19 PM
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for anyone looking for a printable gear, i uploaded it to printables. https://www.printables.com/model/117...video-recorder
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#9
01-30-2025, 07:27 PM
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Dude seriously you made a 3D printed gear? That totally rocks! Very well done!
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#10
01-30-2025, 10:28 PM
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Quote:
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| Audiokarma |
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#11
02-01-2025, 12:27 AM
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Very nice work! And, thank you for sharing it.
__________________
Chris Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did."
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