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1.2

Minor Versionm

by Suhail Ahanger

Introduction

Cut 4 to 5 blades at the top of a plastic bottle and insert a spoke through the centre of the bottle. Now twist the strips all in the same direction. Place the bottle and spoke assembly under fan and enjoy seeing the wind turbine model.

    • Exercise caution while using scissors/ cutter or any sharp tool.

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  1. Stick colored insulation tapes along the wall of the bottle to ensure good visibility when the bottle is under spin.
    • Stick colored insulation tapes along the wall of the bottle to ensure good visibility when the bottle is under spin.

    • Draw five flower "petals" like profile on the bottle top as shown in the figure.

    • "Petals" are nothing but turbine blades!

    • Stick at least one color of insulation tape on the petal area.

    • Cut down the "petals" to the bottle cap using Scissor/Paper cutter.

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    • Bend all five petals at right angle towards the bottle cap.

    • Twist the petals to any side to make the blade profile.

    • It is important that you twist all petals to one particular side.

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    • Heat any thick metal wire piece( at least 10 cm long) on a candle to make hole in the bottle cap.

    • Make a hole at the center of the bottle base also.

    • The Bottle must spin freely on the spoke.

    • Allow the spoke to cool down after making holes.

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    • Pass the Spoke through the bottle from cap to the base with bend portion on the cap side.

    • Secure the spoke with the provided spoke nut .

    vishal:

    Reverse the spoke direction and retake last 2 photos.

    Procheta Mallik - Reply

    • Hang the bottle by holding it at the nipple end and keep it under rotating ceiling fan or else blow air from mouth vertically down on to the blades.

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    • Holes are too small for the bottle to spin.

    • Untwisted blades or blades not twisted enough.

    • Ceiling fan's speed is too low to make the bottle spin.

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    • What direction the bottle spins?

    • How to change the direction of the Spin?

    • Does having more number of blades influence the speed of rotation ?

    • How does the blade area influence the speed of rotation ?

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Finish Line

Kailash NR

Member since: 05/02/2017

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