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Forums10
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Mar 29th, 2024
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Joined: Aug 2013
Posts: 388 Likes: 1
Sidelock
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OP
Sidelock
Joined: Aug 2013
Posts: 388 Likes: 1 |
Whats the opinion on barrel to receiver threads on takedown rifles ? Should they be square or acme threads or are vee-threads ok ? Do the Vee threads wear faster with the assembly/disassembly ?
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Joined: Aug 2013
Posts: 388 Likes: 1
Sidelock
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Sidelock
Joined: Aug 2013
Posts: 388 Likes: 1 |
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Joined: Jul 2012
Posts: 4,461 Likes: 207
Sidelock
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Sidelock
Joined: Jul 2012
Posts: 4,461 Likes: 207 |
OK bonny, here is my 2cents worth. I think V thread would be ok, but if you don't like them, use acme thread. The internal thread is the concern. You would cut the acme thread with the compound set to 14 degrees, cutting mostly on one side of the tool, but the square thread has to be plunge cut. Of course both would have to be cut using a boreing bar, but the square thread is more critical and flex in the bar will give more problems. On the other hand, it is your project, you can do whatever you want.
Mike
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Joined: Aug 2013
Posts: 388 Likes: 1
Sidelock
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OP
Sidelock
Joined: Aug 2013
Posts: 388 Likes: 1 |
OK bonny, here is my 2cents worth. I think V thread would be ok, but if you don't like them, use acme thread. The internal thread is the concern. You would cut the acme thread with the compound set to 14 degrees, cutting mostly on one side of the tool, but the square thread has to be plunge cut. Of course both would have to be cut using a boreing bar, but the square thread is more critical and flex in the bar will give more problems. On the other hand, it is your project, you can do whatever you want.
Mike Mike, many thanks for taking the time to reply. What it is, is i have a westley richards 1897 type action with v-threads already cut. But looking at the action with its flat front surface, i was thinking it would be relatively easy to barrel the rifle as a take-down. But i would worry about the wear on the threads.
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Joined: Jul 2012
Posts: 4,461 Likes: 207
Sidelock
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Sidelock
Joined: Jul 2012
Posts: 4,461 Likes: 207 |
bonny,
I suggest you take a look at other(more modern) take down rifles and consider their systems. It is important that the barrel is locked in, in a vertical position without having to depend on torque to hold it. Then, I would think it is not necessary to take it down over and over, creating excess wear. Just one guy's opinion, and I haven't built a takedown rifle. For what ever it is worth, I have long thought the most effective system was that used on the WW2 Japanese type 99 paratrooper rifle. It's main drawback was it was not British and not elegant enough.
Mike
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Joined: Feb 2004
Posts: 13,879 Likes: 15
Sidelock
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Sidelock
Joined: Feb 2004
Posts: 13,879 Likes: 15 |
Seems like Acme would be too corse. Look at the M12 and M42.
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Joined: May 2008
Posts: 8,158 Likes: 114
Sidelock
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Sidelock
Joined: May 2008
Posts: 8,158 Likes: 114 |
I beg to differ- at least on the Model 12 side- and the Model 97 as well- never have owned a Model 42, or for that matter, any shotgun in .410 bore-- Model 12's never really wear out- I seldom dis-assemble mine, and transport them to area farms and hunting spots in full length Boyt cases-- but their interrupted thread design is hard to find any fault with- almost impossible to cross-thread, and the take up adjustment is flawless- can't speak for the Remington 17 and Ithaca 37, also the Remington 31, as to the longevity of their take-down threaded designs-but I am sure they compare favorably with that of the Model 12--
"The field is the touchstone of the man"..
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