|My inspiration for building a model wind turbine was after visiting the Kid Wind Project display during STEM Day at the Minnesota State Fair. Much like most of what I learned about mousetrap cars was from the Doc Fizzix website, I have learned much from Kid Wind Project website .||Large Wind Turbine Lewiston Minnesota After talking to the representative from KidWind Project at the state fair, I checked out their website and ordered a few items. Included in the order was the adjustable hub, small dc motor, and KidWind MINI2.0 model turbine.|
|The first model wind turbine I constructed used the adjustable hub from Kidwind . More blades can be used and the pitch can easily be adjusted by tightening or loosening the hub clamping the dowels.||Closer view of the Kidwind hub and motor. The knob in front tightens or loosens the hub halves that clamp the dowels. It is easy to change the pitch or number of blades.|
Small D.C. Motors as Generators
This motor came with pinion gear attached, it was possible to glue the hub over the gear without using sleeves.
|This small motor included a bracket and short leads. The bracket made it easy to mount the motor to flat block with screws.|
|Adding leads with alligator clips at the end makes it easy to connect to the meter probes.||Cutting the leads in half and soldering to the motor, only half as many leads are needed.|
Building the Model Wind Turbine
|Draw a straight line through each hole and then
mark a spot ¼” away on back side, draw a diagonal line from front mark of line to back side mark.
|Before creating the blades, check the fit of the dowels into the holes.|
|Make sure the dowels come straight out of the
holes also so that there is 120 angle between each dowel.
|Use a vise to clamp wood parts while drilling.|
|Glue the dowel into the base and makes sure it is vertical when looked at from all directions.||Use a vise to clamp wood parts while drilling.|
Glue the mount or cradle for the motor to the top of the dowel support.
|Bottom half of round motor is glued into cradle. The motor will be glued after the next step.|
|Cutting short length of plastic tubing to create sleeve to go over motor shaft.||Plastic sleeve fits over motor shaft very tight, no adhesive needed.|
Brass tubing sleeve fits over plastic sleeve and inside hole in wood hub.
Building the Blades
|Create a pattern to trace the other blades with.||Trace around the blade pattern.|
|Cut around the pattern that you traced, line down the center is the fold.||Use a straight edge like a ruler and work a fold line in the cardboard.|
|Bend curve shape into one half the cardboard after the fold, the other side should remain flat.||Draw a straight line on one half of the cardboard to locate the dowel that connects the blade to the hub.|
|Glue the dowel to the cardboard blade on the location line.||Place the dowel on line and then apply glue around the edges.|
|Seal the edges of cardboard. I later found that pressing a stiff ruler down along the area that was glued was a help to get a good glue joint.||Three blades ready to be glued to the hub. The blade in the center has flat side showing.|
|I did not get a good curve bend on this blade, looks more like a triangle.||When you glue each blade in line it up with the line that is angled.|
Testing the Model Wind Turbine
|I trimmed each blade to 7” and tried another test of the voltage.||I tested again and the voltage went up slightly, the batteries were set on the base to hold it down better.|
I trimmed the blades again down to 6” long this time and the reading went up further. Kid Wind website explained that this is common as the blades have too much drag and smaller blades spin faster.
Pictures from Fuel My Brain Model Wind Turbine Workshop
|The blades are spinning rather fast in front of the fan.||For this hub, plastic tubing was used and a wood plug was used at one end
drilled to fit the motor shaft with a tight fit.
High Tech Kids Wind Turbine Competition – http://www.hightechkids.org/programs/mn-renewable-energy-challenge-4-12-grade
MN Renewable Energy Challenge (4-12 grade)
High Tech Kids, in partnership with Kid Wind of St. Paul is again offering the MN Renewable Energy Challenge!!
“High Tech Kids: The Minnesota nonprofit that coordinates team registration, resources, volunteer recruitment and administers the challenge. Established since 1999 we have served more than 22,000 students.”
Video explantion of the insides of a large wind turbine http://youtu.be/UakeTEJlXGw
Pictures from MN Renewable Energy Challenge May 5, 2012 ( I was a judge)
|Below: First group that I worked with to build this model wind turbine design, the students did well with this project. Project went well for the next group too.|
13 thoughts on “Model Wind Turbine”
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I keep trying to adjust this website to work with multiple browsers but it seems to be a losing battle. The width is very narrow. Opera is not one that I have available.
Cool its amazing how they figured out wind was a source of energy.
yep thats nice
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This really helped out a lot with my school project! lol. sikeeeeeeeee
Thanks for the help on my project.