|Silhouette of airfoil with 6 degree angle of attack shown. Rectangle with thick black lines are 1.5" by 7.25"|
It looks like the amount of whittling that needs to be done for my windmill blade(s) can be reduced if I can talk my good friend John into running the 2 X 8 through his planer and take three degrees off the bottom and 20 degrees off the top.
One other nicety will be if I can be smart about the warpage. If I am lucky enough to get edge grain (quarter sawn) I won't have to think about warpage. If I cannot get edge grain then I think bark-side-down is preferred. That will add some concavity to the bottom surface which is not a bad thing.
I mentioned to Kubota that I wanted to put up a wind turbine.
"Oh, yeah, right. Do you know how much those things cost?"
That is when I told him I was going to make it. I got that look, you know the one. It is the same one crazy people get when they claim they can spin straw into gold.
Any idiot can make a windmill. It takes a special idiot to make a cheap and simple wind turbine that actually makes some power.