Index of /london/alternative-energy/Dave.Paxton/windmill

Icon  Name                                    Last modified      Size  Description
[DIR] Parent Directory - [   ] PWA.DWG 01-Aug-1992 10:42 4.3K [   ] PWA.PCX 03-Aug-1992 16:56 20K [   ] PWB.DWG 01-Aug-1992 11:15 5.5K [   ] PWB.PCX 03-Aug-1992 16:56 20K [   ] PWBT.PCX 03-Aug-1992 16:57 20K [   ] PWSIDE.DWG 01-Aug-1992 11:14 29K [   ] PWSIDE.PCX 03-Aug-1992 16:56 24K [   ] PWTB.DWG 01-Aug-1992 11:01 3.6K [   ] PWTOP.DWG 01-Aug-1992 10:57 6.5K [   ] PWTOP.PCX 03-Aug-1992 16:57 20K [TXT] README.TXT 12-Jul-1995 15:01 4.6K [   ] paxmil.zip 16-Jul-1995 17:36 47K
Welcome to the drawing board of Dave Paxton.
This unziped package should contain 11 files.
     README.TXT
     PWSIDE.DWG
     PWSIDE.PCX
     PWTOP.DWG
     PWTOP.PCX
     PWA.DWG
     PWA.PCX
     PWBT.DWG
     PWBT.PCX
     PWB.DWG
     PWB.PCX
The TXT file is this file and contains the original ASCII drawings of the 
first experimental device. The DWG files are for use with AUTOCAD and the 
PCX files are best viewed thru CSHOW. When viewing the drawings it is best 
to view in this order: PWSIDE, PWTOP, PWA, PWBT, PWB.
It has come to my attention that no text was added for the sail itself. 
This sail is made out of any lightweight material such a nylon or ripstop 
nylon. It is supported by a simple lightweight frame made of EMT better 
known as conduit. This frame is in the following shape:

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The sail is tightly stitched to this frame. The pivot point where the sail 
attaches to the support arm is either a simple larger diameter pipe with 
grease between the two or the bearing assembly from a bicycle that allows 
the handlebars to rotate in the frame. The dotted extension above the 
spindle and the support cables are in case the 1" galvanized water pipe is 
not sturdy enough to suport the sail. Also, a cable stretched from arm to 
arm and secured to each arm just clear of the sail mechanisms will give 
high wind stability to the assembly. 1/4" or 1/8" steel cable will do. 
This is a proposed construction plan not a proven construction plan, 
therefore, you may find that a heavier pipe is needed. In my proposal the 
power generated is taken to the bottom of the tower an drives a generator 
there rather than at the top. This may present a little more drag but it 
allows me to easily change generators in order to experiment without 
climbing the tower.You may elect to place the generator at the top of the 
tower.

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<NOTE> In my first experiment with this design I made a much smaller 
windmill with no generator connected as of yet. It was noticed that there
is "pulsation" or vibration in the "tower" (the model is small enough it 
is on a mast) that a second model will be constructed with 5 sails (or 
blades if you will) instead of 4 hopeing that the pulsing will be lessend
by haveing more than one sail deployed in the wind at a time, allowing a
steady push instead of haveing a lull betweeen power aplication. I will 
(when I have enough time) make a new drawing for the proposed windmill
with the correct number of sails.

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Since at this time I am unemployed the time I have spent on this drawing 
is without expense to me and I am passing it on to you at no expense. 
Plotted scaled drawings will be printed for those that wish them but there 
will be a charge. You will find my name and address on the drawings or I 
can be contacted net mail at the address this file was frequed from. 
Donations are not sought but if you should wish to send any use the 
address on the drawings.


                                     TOP VIEW


WIND DIRECTION
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 -----------o----------0----------o
            A         /|          |
                     B |          |
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                       o
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          Detail A

          /\
         /  \  <--Spring
        0---------------------------------
       / ^                           ^
      / Pivot                     Support
     /                              Arm
    / <-Sail
   /


           Detail B
 
     \       /
      \     /
       \   /
        \ /
         O <---Bicycle Hub (with 10 speed gears)
        / \
       /   \<--- Support Arms spaced 90 degrees
      /     \
     /       \