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답변 (13)
알류미늄 튜브를 가공하는 기술로 필요에 따라 힘이 덜 받는 부부을 깍아내는 가공기술입니다. 더블이니깐 두가지 두로 깍아 냈다는 뜻입니다. 링크 참고하세요
http://www.eastonbike.com/PRODUCTS/TUBING/tubes_mtb_7005_ultra.html
http://www.eastonbike.com/PRODUCTS/TUBING/tubes_mtb_7005_ultra.html
그냥 지나가다가. 자전거가 원래 서양에서 온 것이라서요. ^^ 참고하셔요. ^^
Butted
Thicker at the ends. Said of spokes and frame tubing. (Butted spokes are also called "swaged") Butted tubing is usually made with a constant outside diameter, but thicker walls at the ends. The idea is to make the part stronger at the ends, where the stresses are greatest, and lighter in the long middle section, where stresses are less.
Some writers have objected to this term being applied to spokes, and maintain that "swaged" is more correct, since the operation that produces a butted/swaged spoke is one of thinning the middle, not thickening the ends. For some reason they don't generally object to the use of "butted" in reference to tubing, though the process is also one of thinning the middle, not thickening the end. This objection is based on a misunderstanding of the origin of the term "butted." "Butted" means having a butt, i.e. a thick end, and has no reference to the means of fabrication.
그래서, Double butted 란,
Butted at both ends. This term is commonly used to refer to frame tubes and spokes, although some prefer the term "swaged" when discussing spokes.
출처 : http://sheldonbrown.com
"겉으로 보아서는 바깥지름이 같으므로 그냥 '봉'으로 보인다. 그러나 안지름은 차이가 있다. 봉의 중간 부분은 안지름이 많이 커서 봉의 표면 두께가 얇은 반면, 봉의 양쪽 끝에부분은 두께가 상대적으로 많이 두껍다는......^^" 것으로 저는 알고 있었는데 제가 잘 못 알고 있던 것인가요? ^^
Butted
Thicker at the ends. Said of spokes and frame tubing. (Butted spokes are also called "swaged") Butted tubing is usually made with a constant outside diameter, but thicker walls at the ends. The idea is to make the part stronger at the ends, where the stresses are greatest, and lighter in the long middle section, where stresses are less.
Some writers have objected to this term being applied to spokes, and maintain that "swaged" is more correct, since the operation that produces a butted/swaged spoke is one of thinning the middle, not thickening the ends. For some reason they don't generally object to the use of "butted" in reference to tubing, though the process is also one of thinning the middle, not thickening the end. This objection is based on a misunderstanding of the origin of the term "butted." "Butted" means having a butt, i.e. a thick end, and has no reference to the means of fabrication.
그래서, Double butted 란,
Butted at both ends. This term is commonly used to refer to frame tubes and spokes, although some prefer the term "swaged" when discussing spokes.
출처 : http://sheldonbrown.com
"겉으로 보아서는 바깥지름이 같으므로 그냥 '봉'으로 보인다. 그러나 안지름은 차이가 있다. 봉의 중간 부분은 안지름이 많이 커서 봉의 표면 두께가 얇은 반면, 봉의 양쪽 끝에부분은 두께가 상대적으로 많이 두껍다는......^^" 것으로 저는 알고 있었는데 제가 잘 못 알고 있던 것인가요? ^^
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