#11
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Quote:
B
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Bill Tromblay "A sign of a good machinist, is one who can fix his F$@& Ups" My mentor and friend, Gil Zietz Micro Metric Machine. |
#12
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That will be correct.
Will
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Here to learn. William Pointer |
#13
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Ok... so what is the English material spec? Is it 1100 or what did they call it?
B
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Bill Tromblay "A sign of a good machinist, is one who can fix his F$@& Ups" My mentor and friend, Gil Zietz Micro Metric Machine. |
#14
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Quote:
Peter
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P.Tommasini Metalshaping tools and dvds www.handbuilt.net.au Metalshaping clip on youtube http://www.youtube.com/watch?v=WEAh91hodPg Making Monaro Quarter panel: http://www.youtube.com/watch?v=KIpOhz0uGRM |
#15
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1200 is BS 1C and in sheet form is L16 or L17 If you have the composition I'll be able to dig out a little more for you. Will
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Here to learn. William Pointer |
#16
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A source for UK aircraft metals:
https://www.aircraftmaterials.com/da...ium/alalu.html
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Kent http://www.tinmantech.com "All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919. |
#17
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Aircraft Spruce and Specialty has an entire section devoted to aluminum for aircraft use:
https://www.aircraftspruce.com/catal...s/aluminfo.php The nice thing about the attached pdf is that it has ratings for cold workability.
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Jacob Hunsinger Shrinking using a stump: https://www.youtube.com/watch?v=-HAFndATFo4&t=7s Making a reverse using a stump: https://www.youtube.com/watch?v=7PlF1BoMCQI Circular Truss E-Wheel http://allmetalshaping.com/showthread.php?t=15419 Last edited by Jacob; 03-01-2019 at 01:58 PM. |
#18
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This is what I'm looking for. Great to see the Twin Mustang up and flying. B
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Bill Tromblay "A sign of a good machinist, is one who can fix his F$@& Ups" My mentor and friend, Gil Zietz Micro Metric Machine. |
#19
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Thank you for the info, Aircraft Spruce has a nice listing for the American materials. I have been doing structural repair and component manufacturing for many years on vintage and American warbird aircraft. As of late, I have been building parts for a DeHavilland Tiger Moth and repair work on a DeHavilland Chipmunk and a Hawker Sea Fury. I always like to make the best choice possible on material selection and substitution, especially with a 430mph Sea Fury. I'm well versed with the American aircraft aluminum from 1100 to 7075 as we form, weld and machine aircraft components every day. A danger with material substitution is compromising the overall design. You could make every part out of 2024 or 7075, or you could substitute titanium, but why make it hard on yourself, if it doesn't need to be. I had an inquiry in eleptical leading edges for a Hawker project, like a Spitfire wing. It is easy to say, use 2024, but what did the English use for an example. If the original material is more similar to 6061, than it would be easier to make than the same part out of 2024.
The English materials that I have dealt with are very different than American materials. The Tiger Moth cowl is so soft, you can put in tool marks easier than you can take them out. The pilot hit the Chipmunk wing leading edge on a runway light, I could tear the aluminum like a piece of paper English Chipmunks have a lower G rating than Canadian built Chipmunks that were built out of 2024 aluminum. My friend and mentor would say, knowledge and skill overcomes superstition and luck. Thanks all your help, Bill
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Bill Tromblay "A sign of a good machinist, is one who can fix his F$@& Ups" My mentor and friend, Gil Zietz Micro Metric Machine. |
#20
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Hi I worked at Hawker DeHavilland's in the 60's in Sydney and all structural stuff was 2024 T3 hardness oil and fuel type tanks 6061 T6 there were a few other alloys also but the 2024 was the main one and it was alclad.
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Jim |
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