mram10
Jerry,
I figure it’s free and makes sense so why not. Thanks
I figure it’s free and makes sense so why not. Thanks
NO! lolCare to elaborate on this?
It's complicated and I can't explain it well myself. I suggest one of the various editions of Machinerys Handbook and searching the term, "thread engagement length"Not understanding how 4-5 threads do all the work. If the receiver and barrel are both a true 16tpi and there is a bit of give to them while torquing, how are they all not touching and being used somehow?
After 40X's question the other day, I mentioned Harold Vaughn's book "Rifle Accuracy Facts" Chapter six deals with the threaded joint between the action and the barrel. If you get a chance to read it, he explains the thread interface and the loads carried by the first few threads. He also includes ways to get a more even distribution of the load to improve accuracy. Sprialock and tapered threads were two solutions.Not understanding how 4-5 threads do all the work. If the receiver and barrel are both a true 16tpi and there is a bit of give to them while torquing, how are they all not touching and being used somehow?
After 40X's question the other day, I mentioned Harold Vaughn's book "Rifle Accuracy Facts" Chapter six deals with the threaded joint between the action and the barrel. If you get a chance to read it, he explains the thread interface and the loads carried by the first few threads. He also includes ways to get a more even distribution of the load to improve accuracy. Sprialock and tapered threads were two solutions.
Another good read is "The Secrets of the Houston Warehouse". That article mentions something elso you pointed out, about threading parts together several times to improve fit. In the article, they actually lapped the threads to get a near perfect fit. A google search will find text for both of these items, as the Vaughn book is rare and prohibitively expensive!
I'd love to have my own copy, But I don't have the green for an unautographed one!For a fee my Vaughn autographed book could be bought.
I"d like a copy of Robert McCoy's "Modern External Ballistics" also, but that is another one that costs more than than a new firearm!
Since you speak so highly of it, I could probably sacrifice my 20% off coupon at Harbor Freight, and a coupon for a free tape measure with purchase!Got anything to trade? Most useless book i ever bought and the most expensive for sure!
If you think about the threads are loose enough to screw on by hand then they hit the shoulder you tourqe it down a bit and it makes sense that the first few threads will start loading up more with the more torque used and the trailing threads will releave slitely or the other way aroundBooks are great, but it shouldn’t take any more than a simple explanation. Heck, throw some dykem on the threads and see what it shows. After the receiver mates with the shoulder how can it do anything other than add more surface contact? The 4-5 threads doesn’t make any sense if the threads are true
Which book are you referring to?Got anything to trade? Most useless book i ever bought and the most expensive for sure!
Modern external ballistics. Got a copy in my library weighing down a shelfWhich book are you referring to?
I'm interested and i might even understand it but I may still just be a delusional machinist that thinks he knows a few things.Modern external ballistics. Got a copy in my library weighing down a shelf
I'm interested and i might even understand it but I may still just be a delusional machinist that thinks he knows a few things.
Then again it may just put me to sleep![]()
If you think about the threads are loose enough to screw on by hand then they hit the shoulder you tourqe it down a bit and it makes sense that the first few threads will start loading up more with the more torque used and the trailing threads will releave slitely or the other way around
Maybe taking a sako with a 1.062-1.5mm pitch and a barrel with 1.062-16 inch thread will balance it all out with some anti sieze.