http://www.vawt.tk Guys Don't Get sick Of me, But After making the V8-3" I realized that the Vanes are not able to hold onto all the wind that comes near it, that was due to when i expanded the middel section it flattened the vanes in the middel, so i designed the V8-4" in a way that when i expand it, it retain the correct shape to stay efficent and able to use all the wind it can get. This design has the RPM and have more Blade area than the V8-3".
V8-4" is made from the follwing:
-8 x 4"x10' PVC pipe cut to shape as in rendering($11.89 each)(95.12 total)(vanes)
-2 x 3"X2" permanent caps (sewer pipes aisle)($2.99 each))($5.98 total)(brackets)
-1 X 6" bike axle from an old bike (free or few $)(top axle)
-1 X 5" long male/female adaptor (arbor) ($7.99)(bottom connection)
-1 X 12" hard plastic tricycle wheel (free)(center bracket assembly)
-24 X 1"x1/8" screws ($1.99)(screws)
-1 X Ametek dc motor ($60.00)(generator)
-frame made from 2x4 ($11.00)(frame)
Total of::: $182.08
My Goal Still is to generate 100 watts at 35km/h
So I hope you guys enjoy this one like the ones before it.
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Step 1: Vanes
The Vanes are made from white 4" PVC cut to Cad Design.
I have cut the vanes to shape as designed in Cad. this design is much more effective in retaining the wind and producing rotation energy. trust me i tried many diffrent cuts and i wasted alot of money to come up with this one, so take my advise.
note: I rendered a drawing for you to see how to cut your vanes (PVC).
I hope I explained it correctly..
And A 1/8" hole is drilled at each side and it is 1" from side and 1" away from bottom.
Again you have to alternate the pvc pipes because of the flange end.
That is it.
Step 2: Mount Brackets
The mount brackets are 4"x2" permanent cap from hardware store.
I drilled a 1/8" hole around the circumfrance every 1.5" to give me 8 holes.
I also drilled out 1/4" center hole for the top axle and 1/2" hole for the bottom axle.
Make sure the side holes line up, otherwise you will have uneven height for the vanes and that will suck.
Step 3: Center Bracket Assembly
The center bracket gives you the extra blade area, the firmness and the Cigar shape.
I used a 12" bike rim. I simply screwed it in the center of the turbine, again make sure it is in the center other you will get a bad wobble.
Easy sh!t, there nothing else to say...lol
Step 4: Vane Assembly
make sure you messure things twice I have included a rendering that will describe the assembly action.
it will be triky to place the middle braket inside but take your time on this one, otherwise you may brake the vanes.
Step 5: In Action Movie
here is the first day up,
note the file is huge, at 59mb.
i Also uploaded a 30mb wmv to youtube.