Thanks, Jan. And, happy birthday!
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Enjoy.
Not that this article is the gospel - the author advocates torquing with dry threads! "Real information" I don't think so!
There are some engineering instances and applications where dry torque readings are specified.
A person can hear a lot. Unfortunately, a sizeable portion of it is pure rubbish. The Grade 8 vs. Grade 5 debate is one of them. Here is some real information on the issue.
http://tinelok.com/grade-5-vs-grade-8-fasteners/
/QUOTE]
Not that this article is the gospel - the author advocates torquing with dry threads!
"Real information" I don't think so!
I really don't want to get involved in oiled vs. dry torque, but I find it interesting that dry torquing is common enough there are charts, giving both dry and oiled specs.
http://raskcycle.com/techtip/webdoc14.html
Bill
So the take away here is that a hardened woodruff key should not used in the Alpine rear axle?
Bill
RootesRacer, you are joking, aren't you?
Bill
Joking about what bill?
Can you give an example?
In some engineering applications you find no lubricant specified (especially in high temperatures where it might become coked and jam the threads.
Some auto manufacturers (example, Mercedes) specify not lubing wheel bolts. I use a tiny amount of anti-seize on wheel lugs as they are exposed to water. This is different from lubing the whole thread.
Ok Bill, I'll bite.
Years ago I lived with my grandparents on a farm where I worked quite regularly on tractors. One such occasion I was helping my grandfather bail some hay.
...I grabbed the nearest bolt that looked right and put it back in and was back on track. About 1 minute later (maybe 100 feet of hay) it broke again.
Went and got another one and within a few minutes I was replacing it again.
After breaking the second one, I went to go ask the master what I was doing wrong and he picked up the bolt and said, "..you used the wrong bolt. This one is a grade 8, its too hard and brittle."
...
We put that cheap grade 2 fastener in and I don't recall having to replace it for the rest of the season.