I was having a hard time finding silk thread from my regular aviation parts suppliers so I decided to look for the thread at sewing suppliers. Still ?00? was hard to find. Frankly I did not really know what it meant so I decided to dig into it. Some of you folks in this forum may already know this so please correct me if I am wrong.
?00? is a Silk Machine Twist size. It basically implies that there is about 1100-1200 yards of thread per ounce. This actually varies by supplier making the matter more complicated. The military once specified their own sizing similar to Silk Machine Twist but more controlled.
The textile industry has standardized on the TEX which is 1 TEX = 1 gram per thousand meters of thread.
If you run the conversion for ?00? to TEX your get that ?00? is between 26-28 TEX. YLI #50 thread seems to fit the bill perfectly since it is TEX 27.
Now if Lycoming was referencing the military spec than all this goes out the window. ?00? from the military is closer to T-16. I doubt this was the case so I will personally go with the #50 thread from YLI.
Some of you are probably thinking, ?who cares?? or ?you need a life? And I would have to agree. I just had some time to kill this evening
?00? is a Silk Machine Twist size. It basically implies that there is about 1100-1200 yards of thread per ounce. This actually varies by supplier making the matter more complicated. The military once specified their own sizing similar to Silk Machine Twist but more controlled.
The textile industry has standardized on the TEX which is 1 TEX = 1 gram per thousand meters of thread.
If you run the conversion for ?00? to TEX your get that ?00? is between 26-28 TEX. YLI #50 thread seems to fit the bill perfectly since it is TEX 27.
Now if Lycoming was referencing the military spec than all this goes out the window. ?00? from the military is closer to T-16. I doubt this was the case so I will personally go with the #50 thread from YLI.
Some of you are probably thinking, ?who cares?? or ?you need a life? And I would have to agree. I just had some time to kill this evening