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Degree vs. Knowledge
There's a fundamental flaw in the OP's original perspective of "college". That flaw is that college is a just a sophisticated "trade school" where someone learns "how" to "do" some "thing". It is not. Its education to broaden the minds of those that attend. Within a given discipline it teaches...- gitano
- Post #53
- Forum: CNC Machining
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4-Speed Electric Motor: What are the Speeds?
Thank you all very much for your answers! The use I have planned for this motor is driving a grain mill. This mill is normally hand-powered, but built with the handle attached to a 12" pulley so that it can be motorized if so desired. I so desire. A 1/2 HP electric motor is sufficient to the...- gitano
- Post #5
- Forum: Transformers, Phase Converters and VFD
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4-Speed Electric Motor: What are the Speeds?
Attached are two pictures of the data plate for an electric motor (F48Y 14A50) I just bought. It says the motor rpm is 1075, but it's also a 4-speed motor depending in the wiring. I cannot find out what the other three speeds are, or, whether the 1075 rpm is the "hi" one or the "lo" one. (I am...- gitano
- Thread
- Replies: 4
- Forum: Transformers, Phase Converters and VFD
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Looking for replacements for discontinued parts
I have a Grizzly 3617 mill that has a inoperable Contactor. I don't want to offend anyone by discussing a "Chinese machine", so in what forum, if any, can I put my request for assistance in finding a replacement for a discontinued part? Paul -
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Screws for Ruger No.1 Quarter Rib
I found some at Fastenall for $0.2131 a piece. (Had to buy 10 of them. Oh dear! ;) ) Rib installed. Thanks for all the suggested sources. I don't know why I didn't think of Fastenal to start with as there is a Fastenal store about 2 miles from my house. Paul- gitano
- Post #8
- Forum: Gunsmithing
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Screws for Ruger No.1 Quarter Rib
Found some at Numrich. $4.45 EACH! Sheesh! But, they have them. Good ol' capitalism... What the market will bear. Paul- gitano
- Post #2
- Forum: Gunsmithing
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Screws for Ruger No.1 Quarter Rib
I am installing (or trying to) a factory Ruger No.1 quarter-rib on a custom barrel. The rib is already profiled properly, but I'm trying to get screws for it. Both Brownells and Midway offer them, but both are out of all except 1 each. Both say "backorder", but no telling when they will show up...- gitano
- Thread
- Replies: 7
- Forum: Gunsmithing
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Tensile Strength of AR-10 and/or AR-15 Between Barrel Nut and Upper Receiver
EGGZACKLY! Paul- gitano
- Post #23
- Forum: Gunsmithing
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Tensile Strength of AR-10 and/or AR-15 Between Barrel Nut and Upper Receiver
If I remember correctly, the rule of thumb is 1/3rd the diameter of the "bolt". In other words, if the bolt is 1" in diameter, you need to sink at least 1/3rd of it in the "nut" (or whatever threaded receiver), to get more 100%+ the strength of the bolt. (I'm recalling this from the top of my...- gitano
- Post #22
- Forum: Gunsmithing
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Tensile Strength of AR-10 and/or AR-15 Between Barrel Nut and Upper Receiver
My 'issue' isn't technically with headspace per se. More correctly put, it's with people that think headspace is in any way associated with "safety". Those people that essentially say that civilization as we know it will end if you shoot a rifle with "excessive" headspace. While, at the same...- gitano
- Post #19
- Forum: Gunsmithing
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Tensile Strength of AR-10 and/or AR-15 Between Barrel Nut and Upper Receiver
Thanks for the reference! That's perfect. I'm just not interested or concerned about headspace.I own a couple of Savages with that design and I don't bother to use it to set the headspace except 'close enough'. I make minute ("my noot") adjustments for headspace with my reloading dies for all...- gitano
- Post #17
- Forum: Gunsmithing
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Tensile Strength of AR-10 and/or AR-15 Between Barrel Nut and Upper Receiver
"the Savage model of adjustable headspacing..." isn't the goal or even desireable. (Don't get me started on "headspace". A bigger paper tiger is not known to Western civilization.) I have Ackley's books, and I don't recall him experimenting with "cut off lugs". Doesn't mean he didn't. I just...- gitano
- Post #15
- Forum: Gunsmithing
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Tensile Strength of AR-10 and/or AR-15 Between Barrel Nut and Upper Receiver
Thanks for taking the time to reply, pantherpaw9. That looks like a good place to start. I'll let you know what I come up with. Paul- gitano
- Post #13
- Forum: Gunsmithing
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Hardening 12L14 - Case or Otherwise
"Maybe it's magic" :D Some stuff seems to be! Thanks to everyone for taking the time to answer. Paul -
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Hardening 12L14 - Case or Otherwise
I am not interested in making any cutting edged tools from 12l14, rather I am just trying to reconcile being told by professional machinists that one can NOT harden 12L14 steel, and seeing an ad for something made of 12L14 and it being "case hardened". Can you please explain (briefly if you... -
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Hardening 12L14 - Case or Otherwise
Some time back, I made a chamber reamer from some 12L14 with the intent of 1) "practicing" first, and 2) "use once". I'm sure many of you will already be shaking your heads. It was 'fun' turning, but all attempts at any form of 'hardening' were futile. Thereafter, professional machinists told me... -
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Aluminum to Aluminum Interference Fit - ID 0.694"
I said I'd relate the 'final details', and here they are. After contemplating cutting the new hole with the plug Loctited in place, I decided that the best course of action was to just bite the bullet and chuck the blasted piece in the 4-jaw, bore a larger on-center hole, and bush it. I just... -
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Aluminum to Aluminum Interference Fit - ID 0.694"
Thanks for all of the replies. It's done and dusted. Didn't trust the AL-AL, so I went with steel, red Loctite and somewhere in the vicinity of 0.0015" clearance. I'll post here once I get the new hole drilled or... Paul