Thinking further, it's not so much the number of pins that I'm concerned with as how they are spaced out around the case. If ten pins are spaced equally around one plane then the center of each pin would be 1.5" apart from the next. Using 1/4" pins, this would leave 1.32" of aluminum in between each hole.
Before I spent a nickel on machining the tube I would make sure it is round
I am interested in the dowl pin method.....
ANYONE have any pictures? if they are taught, could you thread the inside of the pin, and use a screw - pully to remove them?
For a neat nozzle, you need to put the GVR Rao calculations into excell.. Have it plot a CSV. and rename it to an SCR. Then start a spline, and list the SCR for the points. then close the spline.
I do this on my nozzles, then i have a lazer cut the shape in mild steel plate, and use the lathe to cut the shape. Not cnc, but poor mans shaped nozzle!
Hard part is, I have a hard time getting the gas dynamics correct enough to make efficiency of the (better shape)
I am interested in the dowl pin method.....
ANYONE have any pictures? if they are taught, could you thread the inside of the pin, and use a screw - pully to remove them?
How do you teach the pins? Sit them down and lecture?
Edward
You might have a hard time threading a hard material like dowel pins, but Mcmaster has pins like this. How do you teach the pins? Sit them down and lecture?
Edward
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