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Quick Lenz2 question.
By Igor, Section Wind Posted on Wed Nov 14, 2007 at 10:26:15 AM MST
Quick Lenz2 question.

Hi everyone.
With reference to Ed Len'z turbine plans from his website (below)
http://www.windstuffnow.com/main/wing_dimensions_and_angle.JPG
The blade dimensions are calculated from the diameter, but from where exactly is the diameter measured ?
Is it from the outermost edge of the blade, or the inner edge where the horizontal line is drawn in the diagram ?
I have printed out that diagram and taken measurements from it to try and work it out, but that diagram isn't to scale, because neither of those measurements fit the picture.
I emailed Ed a few days ago to ask this same question, but I have had no reply as yet.
Dave.

Quick Lenz2 question. | 5 comments (5 topical)

Re: Quick Lenz2 question. (3.00 / 0) (#1)
by disaray1 on Wed Nov 14, 2007 at 05:07:36 AM MST

Igor, I sure can't speak from experience or for Ed, for that matter, but I would take it that the diameter would come from the outermost edge. The inner horizontal is a reference line for attack angle.

Also, Ed posted this

http://www.windstuffnow.com/main/lenz2_turbine.htm

in a another thread a few days ago, which is very helpful. Thanks Ed!

AbbyNormal.

Re: Quick Lenz2 question. (3.00 / 0) (#5)
by spinner on Fri Nov 30, 2007 at 07:28:41 AM MST

once again, ed is being most helpful to all interested in his innovative design
thanks, ed
spinner

[ Parent ]

Re: Quick Lenz2 question. (3.00 / 0) (#2)
by windstuffnow on Wed Nov 14, 2007 at 07:30:51 AM MST

Hi Dave,
I did send you a reply but it bounced as undeliverable. It is the outermost of the diameter and the page dissaray posted again should clear up the confusion.

I think the early venturi model ( actually the L1 ) dimensions are a bit confusing on my site and I'll have to make it a bit clearer as to the differences between the two. Both are good running.
Have Fun! Windstuff Ed

Re: Quick Lenz2 question. (3.00 / 0) (#3)
by fcfcfc on Wed Nov 14, 2007 at 08:24:17 AM MST

Hi Dave:

I have looked at your turbines as well... Comparing the two designs, inner triangle, no inner triangle, have you noticed a measurable difference in efficiency between the two, particularly at lower wind speeds..??..

Thanks...

.....Bill

Re: Quick Lenz2 question. (3.00 / 0) (#4)
by Igor on Thu Nov 15, 2007 at 12:27:01 AM MST

Thanks Guys.

That's cleared that one up then. I assumed it would be the outer diameter, but when I did a scale drawing of what I had planned, it looked wrong compared to that drawing, so I just wanted to be certain before I go any further.

Thanks again. - Dave.

[ Parent ]

Quick Lenz2 question. | 5 comments (5 topical)

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