https://youtu.be/jknMrFOGMOQ
Project Farm tests them, so you don't have to
Project Farm tests them, so you don't have to
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Which thread repair?
- Thread starter Big T
- Start date
Heli-coil and the like seem to get a bad rep... but I always take it with a grain of salt as usually the guy telling me the thread repair is CRAP, is the guy that just galled all the thread off his sparkplug or drain plug.
Thread inserts were not originally designed as thread repair. A properly installed threaded insert makes connections stronger (they are larger diameter so have more contact area, so the same as using a larger bolt) and were extensively used in aerospace applications in aluminum.
Thread inserts were not originally designed as thread repair. A properly installed threaded insert makes connections stronger (they are larger diameter so have more contact area, so the same as using a larger bolt) and were extensively used in aerospace applications in aluminum.
Dogma
Forum Sage
The biggest compliant with the coil types is that they sometimes back out with the screw on disassembly. I'm told the fix for this is to stake the material near the top end of the coil so it can't back out. I've never done this myself; just reporting what I've been told.
The machine shop I work for prefers the E-Z-Lok for the ease of installation. Costs a bit more to buy, but saves on that precious unbillable time. Also, they don't back out.
The machine shop I work for prefers the E-Z-Lok for the ease of installation. Costs a bit more to buy, but saves on that precious unbillable time. Also, they don't back out.
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G
Guest
Guest
Being in the fastener trade here in the UK, I sell loads of genuine Helicoil inserts and generic wire thread inserts. As long as the holes are drilled correctly and the inserts are installed correctly they are as good as the original thread. Did hear somewhere that Rolls Royce use Helicoil / helical inserts in all of the engine blocks as standard.
I have used TimeSerts and really think they are the best - but they are also costly $$
