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Posted: 10/18/2019 3:04:16 PM EDT
[#1]
Quote HistoryQuoted:
When I put an aftermarket turbocharger on my Solstice car I was so used to safety wiring stuff on my airplane that I drilled the cap screws on the compressor and turbo and put safety wire on those screws just to feel good... ETA: I hate the guys that don't bend the pigtail back on itself! https://a4.pbase.com/o6/72/325172/1/83060852.0ljJk732.Saftywire1.jpg 
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Posted: 10/18/2019 3:10:03 PM EDT
[#2]
7:30-8:00 to loose, all pigtails to short.
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Posted: 10/18/2019 3:13:02 PM EDT
[#3]
Quote HistoryQuoted: See the video link I posted above. He build Jet engines and covers the types and methods, it's longer, but I believe cover all actual rules. No absolute limit, but something about beyond 3 is more hassle for no extra benefit or something to that effect. I agree with him, though a single wire through 6 is prettier, not any safer than 3 at a time. See the post below yours for actual limits. I work turbine engines also. |
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Posted: 10/18/2019 3:20:48 PM EDT
[#4]
Quote HistoryQuoted:
@brass See the post below yours for actual limits. I work turbine engines also. Quote HistoryQuoted:
Quoted: See the video link I posted above. He build Jet engines and covers the types and methods, it's longer, but I believe cover all actual rules. No absolute limit, but something about beyond 3 is more hassle for no extra benefit or something to that effect. I agree with him, though a single wire through 6 is prettier, not any safer than 3 at a time. See the post below yours for actual limits. I work turbine engines also. |
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Posted: 10/18/2019 3:37:48 PM EDT
[#5]
Quote HistoryQuoted:
Way too many perfectionists. 
Is it in the right direction - Yes/ No Is there a pigtail - Yes / No If yes, it's good. Fuck it, fly it. This is what an avionics technician safety wire job looks like. https://i.redd.it/45hcu5xucubz.jpg If you want to learn how it's done in Aviation - Chapter 7-123. SAFETY WIRE. http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/0/99c827db9baac81b86256b4500596c4e/$FILE/Chapter%2007.pdf 
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Posted: 10/18/2019 3:39:55 PM EDT
[#6]
Here come all the propulsion guys, out of the wood work.
Just please please please make sure you are wearing safety glasses. 
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Posted: 10/18/2019 3:46:16 PM EDT
[#7]
Quote HistoryQuoted:
Here come all the propulsion guys, out of the wood work.
Just please please please make sure you are wearing safety glasses. 
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Posted: 10/18/2019 4:03:35 PM EDT
[#8]
Quote HistoryQuoted:
For the Air Force it's under 1-1A-8, 16.1.4.a: "...The number of bolts, nuts, screws, etc., that may be wired together depends on the application. When securing widely spaced bolts by the double-twist method, the maximum number of bolts that can be wired in a series is three. When securing closely spaced bolts, the number that can be secured by a 24-inch length of wire is the maximum number in a series. ..." And from the FAA: "When drilled head bolts, screws, or other parts are grouped together, they are more conveniently safety wired to each other in a series rather than individually. The number of nuts, bolts, or screws that may be safety wired together is dependent on the application. For instance, when safety wiring widely spaced bolts by the double twist method, a group of three should be the maximum number in a series. When safety wiring closely spaced bolts, the number that can be safety wired by a 24-inch length of wire is the maximum in a series. The wire is arranged so that if the bolt or screw begins to loosen, the force applied to the wire is in the tightening direction." Quote HistoryQuoted:
Quoted:
Quoted: 204 series says 3 is the max. "...The number of bolts, nuts, screws, etc., that may be wired together depends on the application. When securing widely spaced bolts by the double-twist method, the maximum number of bolts that can be wired in a series is three. When securing closely spaced bolts, the number that can be secured by a 24-inch length of wire is the maximum number in a series. ..." And from the FAA: "When drilled head bolts, screws, or other parts are grouped together, they are more conveniently safety wired to each other in a series rather than individually. The number of nuts, bolts, or screws that may be safety wired together is dependent on the application. For instance, when safety wiring widely spaced bolts by the double twist method, a group of three should be the maximum number in a series. When safety wiring closely spaced bolts, the number that can be safety wired by a 24-inch length of wire is the maximum in a series. The wire is arranged so that if the bolt or screw begins to loosen, the force applied to the wire is in the tightening direction." |
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Posted: 10/18/2019 4:08:46 PM EDT
[#9]
Quote HistoryQuoted: I was always told 3 is the max. AF jet engine shop for 9 months. Then they sent me to go fly jet aircraft. |
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Posted: 10/18/2019 4:10:27 PM EDT
[#10]
Quote HistoryQuoted: QC or QA say a lot of things. Neither they or I are always right. We eventually come to an agreement over what the book says, though. |
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Posted: 10/18/2019 9:59:31 PM EDT
[#11]
Quote HistoryQuoted: No. You did it because you're retired, single, bored and your black lab was sound asleep on the shop floor.
Yup, I'm retired and single - but no, I'm not bored in the least and I didn't have a dog then... 
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Posted: 10/19/2019 1:51:15 AM EDT
[#12]
Quote HistoryQuoted: I was always told 3 is the max. AF jet engine shop for 9 months. Then they sent me to go fly jet aircraft. |
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Posted: 10/19/2019 2:36:50 AM EDT
[#13]
Former aircraft maintainer checking in. I'd say you did well for your first shot at it
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