We still cut several more IF, Reg. and FH threads than we do NC in any given week, in a shop that primarily builds specialty wellhead equipment, wireline and downhole tools, crossovers and lately a fair number of PDC bit bodies (API 6A, 7, 16A and 16C licenses). I would say at least three or...
Oops, just realized my spreadsheet mistake. Used nominal pipe OD instead of upset OD. None of this explains any of my original problems but at least now I can duplicate the tabulated values in RP 5C1.
SnubEngr
NOTE: I have cross-posted this to the API Code Issues Forum.
Does anyone here have experience with API EUE tubing, especially L-80, at all sizes, being made up to the specs given in Bull. 5C1 and finding that it is just way too high?
Over the years, I have come across this several times, and...
Does anyone have experience with EUE tubing, especially L-80, at all sizes, being made up to the specs given in 5C1 and finding that it is just way too high?
Over the years, I have come across this several times, and now again recently with 2 7/8" 6.50# L-80.
After looking at the derivation...
Remembering back to my instrumentation days, I think that in general, pressure measuring devices which utilize bourdon tubes, are at the highest accuracy between 30% and 80% of the range. I think that most, if not all, analog chart recorders use bourdon tubes for pressure measurement.
However...
Much of this info is relevant to SP2. Have you guys 'upgraded' to SP2? I did and then ending up going back to SP1 because I had all kinds of problems while using Inventor. Lock ups, ghosting, lost time & info. were common, especially in large (500 part+) assemblies. Went back to SP1 and have...
Where are you located? I know of a shop using a customized version of a commercially available shop management program that, among other things, produces travellers and quality plans with each process bar-coded. It also produces employee ID tags which are bar coded. When a...
I actually only need to go about 50 degrees around the shaft, and I understand the 3-d sketch concept, but I'm falling down on how to make a sketch on the surface of the cylinder.
As for lofting...what you talkin' bout Mike? (I just have no experience with it at all).
Thanks for your quick...
Hello:
I am trying to put a slot into a shaft which follows a fairly convoluted path, but the slot itself is the same shape and size throughout. I believe I need to make the slot profile sketch and then a sketch of the path to sweep the feature through but I can't figure out how to make a...
Thanks for the quick reply, but I'm still missing something.
Isn't the pressure in the cylinder constant? If so, what determines when the secondary (outer I guess) cylinder is activated?
Cheers,
Denande
Hello:
Today I came across a website for a 'step-up hydraulic cylinder'. Apparently it has a high-speed, low force mode and then when it encounters resistance it switches to a low-speed, high force mode. I'm assuming that it must work by somehow altering the active pressure area of the...
Try this site. He built a bike from CF in his garage.
http://www.sheldonbrown.com/rinard/howibuil.htm
BTW, many high end bikes are made from CF these days and have been for many years. I ride one from the late '80s.
Cheers,
DA
