Beeknight @ Tue Sep 11, 2018 9:39 am 写道:Sergeantpepper @ 周二 9月 11, 2018 9:26 am 写道:ideas are ever being sharpened up
flex ? that'd only take care of tensions, dont forget about compressions yak & floats will NOT bounce up and down in perfect harmony
不很明白tension和compression的区别,愿闻其详。
BTW,aluminum metal flat bar合用吗?1/8inch厚度是不是太薄?Lowes最宽的只有2",我需要个4"宽的来cover mount base。https://www.lowes.ca/metal-products/hillman-aluminum-metal-flat-bar_g1185843.html
呼唤Tigeroffroad!!
家里木料倒是有一些,切割成合适的尺寸不成问题,但在水上用总觉得木头不耐久。用线fish out 8根螺丝,再一根根地倒着拧紧螺母可不是something I look forward to repeating.
"All structures have forces acting on them. You should have an understanding of tensile, compressive and shear forces. The part of the structure that has a tensile force acting on it is called a TIE and the part that has a compressive force acting on it is called a STRUT."
you'd need a rigid cross bar to work both as a TIE & a STRUT....
well, 1/8"x4" al bar is not flexible at all, it may just do it...just add reinforcement on top if it bends in future