Originally Posted by
reburns
post #5 describes dissatisfaction with using regular grease on couplers. Although just one anecdote, I find it more compelling than the extensive S&S report where no evidence is ever presented showing 1/4x20 nuts deformed under 4000 pounds of lateral force as a valid simulation for bicycle couplers. I suppose that it’s a quick, easy and inexpensive way to compare galling failure limits between stainless steel threads across scores of lubricants. But not necessarily translatable to a much different application.
I agree that it’s not a completely accurate representation of the loading the coupler would see but I definitely appreciate that they developed a test method and have quantifiable results. I put more faith in a well designed test than in one anecdotal result. But since the test is not an apples to apples comparison, I would definitely like to know if others have had issues. Post #5 mentioned having the coupler loosen but has anyone had issues of it actually galling? That would show up as damage to the thread surfaces themselves or possibly on the coupler teeth(?).