Standard crank size and READING A MICROMETER!!
#1
Standard crank size and READING A MICROMETER!!
It's been a while siince I have done this. Please correct me if I am wrong.
I picked up a set of micrometers last week. Crankshaft is out and I decided to see where it was as far as previous machining....
Here is a main journal measurement and all 5 are the same:
I read 2.748", yes?
And for the rod journals:
Again, all 4 journals are the same size measured in three places across the face of the journal. The diameter is 2.438".....?
I need to do this more often. It's been too long!!
I picked up a set of micrometers last week. Crankshaft is out and I decided to see where it was as far as previous machining....
Here is a main journal measurement and all 5 are the same:
I read 2.748", yes?
And for the rod journals:
Again, all 4 journals are the same size measured in three places across the face of the journal. The diameter is 2.438".....?
I need to do this more often. It's been too long!!
#3
You get what you pay for with micrometers. I have a set made in China that are not accurate at all. And an old Starret set that works great. When you start looking at tenth's of mils, a cheap set isn't worth a damn. Remember that when you are reading them. Just because it has the digits, doesn't mean it is accurate to all those digits. Get a good set of tools. They may not be cheap.
#4
And rest assured if an opportunity arises to pick up a more accurate 2"-3" tool I will get it. And none of my measuring tools are chinese made... I just wanted verification I was remembering how to read this tool correcctly.
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