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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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end politics . Aircraft steel tube frames.
Its simple . You cant allow criminals to vote . But our Constitution garantees criminals "RIGHT" to vote . Thats not confused , its simple ... We end political arguements by soundly rejecting the arguements from those who cant earn with their own hands . This implies there will be no "selling" nor commerce, ever again . You think , you compete with other producers , you build a competitive machine , you dont have to sell it , they come to you . you get value or money then you buy land , and live happily ever after . If you can do this , you are one who will discuss ETHICs and you will be heard and respected . ALL others will NOT be heard , no respect , not even a politician , cause they SELL ( see above "sell") The Ethics of all communities are : No group , nor syndicate carrys weapons . If you even mention , democratic "grouping" , you will be deported from the community ( no jails , merely deportation ) . ----------------- Now on to RCM Flame welding 4130 is a NO NO in aircraft . It is not measureable , nor repeatable . Brazing thin wall steel tube as in Bicycle frames is high quality , last long time , uses the properties of CRS tube , to its best . Structural aluminum frames use 2024-T3 ,cause it has 65,000 UTS , But 5052H38 is also high UTS . but not as high . Aluminum can fail , if enough reversals of cyclic stress . There is little difference in 5052H38 , its insignificant . So for wing spars use 2024T3 , but the rest of the wing can be 5052H38 or H34 , at 1/4th the cost . Californiametals has 2024T3 0.063 at $185 but you need to buy 100 sheets . Honda CBR1000 ,, Yamaha R1 has the right stuff . It can tune camshaft to lower effective compression ratio and gain economy , at cruise , yet make 1.5 HP per lb of engine wt at take-off . Now we have everything we need . But in the past engines were JUNK ( heavy, uneconomical) Do it ... BTW Dont buy www.longevity-inc.com . I got 518 and it cant be used nor fixed . Simon K is fighting me , He wont make good the warranty . Ingenuine offers to "fix" my machine .. |
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