OK, I'm having a thru hull stress out.
I've learned so much in the past year I've
been with this group and I would like to thank everybody. This is an
incredible group of people. The core group who started this forum
along with everybody else have really enriched my life
measurably!! Just wanted to make sure I said that if I haven't
said it before. I've learned to operate the lathe and mill along
with many other skills of measuring and so forth. And as an added benefit
as well is that I have the whole new area of machining to talk to my
Father about. He was/is a hydraulics engineer, we have always talked tech
but now there is an added dimension to it.
I'm still learning however, it's amazing to me how when
you jump into something how you encounter the problems head on, something
your not going to get working on Auto Cad!! I am still not entirely
clear on this thru hull assembly that I'm trying to do. I machined this
part but now it is becoming apparent that I should have first obtained a
standard "O" ring and made the shaft based on the size of the "O" ring that
is off the shelf so I'm not fighting correct tolerance problems. The other
thing I'm in a quandery about is the fact that the "O" ring needs about 10
thousanths space between the shaft and the hole. It seems to me that this
is going to create a bit of slop when turning the valve handle once the thru
hull is in place, hence the need for a concentric larger diameter shaft with
closer tolerance that does not have an "o" ring. or maybe reduce that diameter
just near the "o" ring. Also the fitting or female part where the
shaft goes into needs to have a rounded or tapered hole so the "o" ring does not
tear when being inserted into the hole. And I'm not sure how long I should
make the part, how much it should protrude on each side of the 1/4"
hull. Anyone have some thoughts on
some of my quanderies?
What I might do is proceed with what I think is right and then put up a
picture of what I've got and get some reaction from the group. Thanks all
!!
Brian "stress-out" Cox
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