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<HTML> <BODY BGCOLOR="FFFFFF" TEXT="000000" LINK="0000ff" ALINK="ff0000" VLINK="ff0000"> <HEAD><TITLE> Electric Hovercraft Options </TITLE></HEAD> <font size="3" face= "courier"> <br> Changing The Voltage<br><br> <img src="six-cells-small.jpg" height=130 > <br> Thrust and runtime expressed as percentages of the performance of 4 cells.<br> 2 cells: Thrust = 40%, Runtime =195% <br> 3 cells: Thrust = 83%, Runtime =129%<br> 4 cells: Thrust =100%, Runtime =100%<br> 5 cells: Thrust =117%, Runtime = 86%<br> 6 cells: Thrust = 150%, Runtime = 70% <br> <hr><br> Using A Parallel Circuit<br><br> <img src="parallel-absract-small.jpg" height=130 > <img src="parallel-in-use-4-small.jpg" height=130 > <img src="parallel-in-use-close-small.jpg" height=130 ><br> Each motor in the circuit adds resistance and decreases the availble current, so when two motors are run in parallel, each motor won't be as powerful as when the circuit has only one motor: <br><br> Thrust and runtime expressed as percentages of the performance of just one motor operating with 4 cells.<br> 2 cells, 2 motors in parallel: Thrust = 34%, Runtime = 114%<br> 3 cells, 2 motors in parallel: Thrust = 46%, Runtime = 82%<br> 4 cells, 2 motors in parallel: Thrust = 74%, Runtime = 64%<br> 5 cells, 2 motors in parallel: Thrust = 85%, Runtime = 55%<br> 6 cells, 2 motors in parallel: Thrust = 108%, Runtime = 45%<br> <hr><br> Using A Serial Circuit<br><br> <img src="serial-hooked-flip-small.jpg" height=130 > <img src="P1010004-serial-in-use.jpg" height=130 > <img src="serial-in-use-close-small.jpg" height=130 ><br> Thrust and runtime expressed as percentages of the performance of just one motor operating with 4 cells.<br> 2 cells, 2 motors in serial: n/a<br> 4 cells, 2 motors in serial: Thrust = 40%, Runtime = 211%<br> 5 cells, 2 motors in serial: Thrust = 57%, Runtime = 170%<br> 6 cells, 2 motors in serial: Thrust = 69%, Runtime =136%<br> 8 cells, 2 motors in serial: Thrust = 97%, Runtime = 108%<br> <hr><br> Is there an advantage to <img src="dual-two-cells-in-GH-2small.jpg" height=130 > over <img src="serial-in-use-close-small.jpg" height=130 > <font size=8> ? <font size=3> <hr> <br><br> To go back to the main page, click here for the <a href="../MainPage.html">Goldstein Hovercraft</a> main page. <br><br> If you do not see a table of contents on the left side of your screen, click here for the <a href="../index.html" onclick="window.open(this.href,'newWindow'); return false;"> Goldstein Hovercraft</a> web site. <hr> © Goldstein Hovercraft, LLC