Build an Electrostatic Motor

7/31/2019 Build an Electrostatic Motor

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Build an Electrostatic Motor
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This site gives information for building an electrostatic motor from 2 plastic soda (pop)

bottles. To see a video of the motor in operation, click on the file "cap0001.mpg" below. Be

patient - it's a big file (17 MB). For additional information on the procedure, clickhere.

cap0001.mpg17 MB

Step 1Base
http://www.members.shaw.ca/jachasehttp://www.members.shaw.ca/jachasehttp://www.members.shaw.ca/jachasehttp://www.instructables.com/files/orig/FML/L48W/CSQEQZJIZGU/FMLL48WCSQEQZJIZGU.mpeghttp://www.instructables.com/id/Build-an-Electrostatic-Motor/step1/Base/http://www.instructables.com/id/Build-an-Electrostatic-Motor/step1/Base/http://www.instructables.com/files/orig/FML/L48W/CSQEQZJIZGU/FMLL48WCSQEQZJIZGU.mpeghttp://cdn.instructables.com/FCC/UH6X/8XHEQZJIYFL/FCCUH6X8XHEQZJIYFL.LARGE.jpghttp://www.instructables.com/files/orig/FML/L48W/CSQEQZJIZGU/FMLL48WCSQEQZJIZGU.mpeghttp://cdn.instructables.com/FCC/UH6X/8XHEQZJIYFL/FCCUH6X8XHEQZJIYFL.LARGE.jpghttp://www.instructables.com/id/Build-an-Electrostatic-Motor/step1/Base/http://www.instructables.com/files/orig/FML/L48W/CSQEQZJIZGU/FMLL48WCSQEQZJIZGU.mpeghttp://www.members.shaw.ca/jachase


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Drill a hole in the wood just large enough for a bamboo skewer. The hole must be drilled as

vertically as possible. Insert the skewer in the wooden base. The skewer serves as the axle for

the rotor to spin on.
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Step 2Stator
http://www.instructables.com/id/Build-an-Electrostatic-Motor/step2/Stator/http://www.instructables.com/id/Build-an-Electrostatic-Motor/step2/Stator/http://www.instructables.com/id/Build-an-Electrostatic-Motor/step2/Stator/


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Use the larger bottle as the stationary stator. Tape two pieces of foil (4 layers thick) on the

bottle. These are the stator plates that will interact with the rotor plates. Cut tabs in the plastic

and bend the tabs in slightly. Trim back the plastic to slightly less than the length of the foil.

The foil tabs will allow charge to jump from the stator plate to the rotor plate, causing the

rotor to spin. If possible, use some tape to insulate the foil tab so that only the tip is exposed.

Step 3Rotor Bottle
http://www.instructables.com/id/Build-an-Electrostatic-Motor/step3/Rotor-Bottle/http://www.instructables.com/id/Build-an-Electrostatic-Motor/step3/Rotor-Bottle/http://cdn.instructables.com/F1F/VJ0G/B8PEQZJIY8N/F1FVJ0GB8PEQZJIY8N.LARGE.jpghttp://www.instructables.com/id/Build-an-Electrostatic-Motor/step3/Rotor-Bottle/


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Use the smaller bottle as the rotor. The rotor plates are made by taping 3 pieces of foil

symmetrically on the bottle, keeping a separation of about 1 cm between the plates. The tape

serves to insulate one plate from the next. Drill a small hole in the centre of the bottom of the

rotor bottle for insertion on the bamboo skewer. Insert a screw inside the rotor cap in the exact

centre to act as a "frictionless" pivot for the bamboo skewer.

Step 4Assembly
http://www.instructables.com/id/Build-an-Electrostatic-Motor/step4/Assembly/http://www.instructables.com/id/Build-an-Electrostatic-Motor/step4/Assembly/http://cdn.instructables.com/FNE/G8UZ/7NBEQZJIY9C/FNEG8UZ7NBEQZJIY9C.LARGE.jpghttp://www.instructables.com/id/Build-an-Electrostatic-Motor/step4/Assembly/http://cdn.instructables.com/FNE/G8UZ/7NBEQZJIY9C/FNEG8UZ7NBEQZJIY9C.LARGE.jpg


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Place the stator bottle on the axle. Next place the rotor bottle on the axle, ensuring that the

bamboo axle is in the centre of the screw you put in the cap. You may have to adjust the

length of the axle so the rotor and stator plates are properly aligned. Adjust the tabs on the

stator bottle so that the foil tip comes very close to the rotor plate without rubbing. You may

need to trim back the plastic tab a little but leave some foil extending past the end of the

plastic. This way, if the foil tab touches the rotor, it won't slow it down.

Step 5Operation
http://www.instructables.com/id/Build-an-Electrostatic-Motor/step5/Operation/http://www.instructables.com/id/Build-an-Electrostatic-Motor/step5/Operation/http://cdn.instructables.com/FRY/J59Y/YNVEQZJIYGZ/FRYJ59YYNVEQZJIYGZ.LARGE.jpghttp://cdn.instructables.com/FTI/UA5K/SAIEQZJIYHO/FTIUA5KSAIEQZJIYHO.LARGE.jpghttp://cdn.instructables.com/F2W/G7K2/R9PEQZJIY7Y/F2WG7K2R9PEQZJIY7Y.LARGE.jpghttp://cdn.instructables.com/FRY/J59Y/YNVEQZJIYGZ/FRYJ59YYNVEQZJIYGZ.LARGE.jpghttp://cdn.instructables.com/FTI/UA5K/SAIEQZJIYHO/FTIUA5KSAIEQZJIYHO.LARGE.jpghttp://cdn.instructables.com/F2W/G7K2/R9PEQZJIY7Y/F2WG7K2R9PEQZJIY7Y.LARGE.jpghttp://cdn.instructables.com/FRY/J59Y/YNVEQZJIYGZ/FRYJ59YYNVEQZJIYGZ.LARGE.jpghttp://cdn.instructables.com/FTI/UA5K/SAIEQZJIYHO/FTIUA5KSAIEQZJIYHO.LARGE.jpghttp://cdn.instructables.com/F2W/G7K2/R9PEQZJIY7Y/F2WG7K2R9PEQZJIY7Y.LARGE.jpghttp://www.instructables.com/id/Build-an-Electrostatic-Motor/step5/Operation/


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Using flexible copper wire, attach one of the stator plates to a Van de Graaff generator (or TV

screen covered with foil), and the other plate to ground (e.g. a sink faucet). Turn on the

generator or TV. It may take 10 or 15 seconds for enough charge to build up. You may have

to give the rotor a gentle spin to get it going, but if it is made properly, it will start turning by

itself. It should rotate up to 400 - 500 r.p.m.
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cap0001.mpg17 MB
http://www.instructables.com/files/orig/FML/L48W/CSQEQZJIZGU/FMLL48WCSQEQZJIZGU.mpeghttp://www.instructables.com/files/orig/FML/L48W/CSQEQZJIZGU/FMLL48WCSQEQZJIZGU.mpeghttp://www.instructables.com/files/orig/FML/L48W/CSQEQZJIZGU/FMLL48WCSQEQZJIZGU.mpeg

Build an Electrostatic Motor

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