Admin Group
Joined: 05/06/2004
Location: AustraliaPosts: 5170
| Posted: 10:37am 10 Jul 2011 |
I have to comment that the steel tube is a designed structural part of the extruded blades, both PVC and Aluminum. When I first drew up the profile I intentionally removed the any webbing around the "hole" because the steel tube would provide the strength needed in that area of the blade. Without it, the blade has very little strength and will bend and break, simple as that.
I also believe too much emphasis is placed on turbine weight. I remember in the early days of the extruded blades I was copping a lot of flack because they were considered too heavy by some. But 3 years later the extruded blades have proven themselves as good performers. Its true a set of well designed and carved carved timber blades can outperform the extruded blades, but that takes a different skill set, of which some of us dont have, plus a time cost.
Just my 2 cents. I put a lot of time and thought into those blades, and earn nothing in return other than knowing they work when used as designed.
Glenn
The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ