{"id":727,"date":"2010-03-14T00:10:19","date_gmt":"2010-03-14T07:10:19","guid":{"rendered":"http:\/\/cafe.foundation\/blog\/?p=727"},"modified":"2010-03-21T21:28:17","modified_gmt":"2010-03-22T04:28:17","slug":"trikebuggy-addendum","status":"publish","type":"post","link":"http:\/\/cafe.foundation\/blog\/trikebuggy-addendum\/","title":{"rendered":"Trikebuggy Addendum"},"content":{"rendered":"

In “Two Motors and Everything But Coffee,”\u00a0our entry for February 28, we detailed Pierre-Jean Beney’s Hacker motor-powered Trikebuggy.\u00a0 Pierre-Jean wants to change things, including, “The motor, the prop, the battery and the wing… So I am still somewhat away from where I want to have….”<\/p>\n

Currently, it takes 2,000 propeller revolutions per minute to maintain level flight.\u00a0 The LiF2PO4 batteries\u00a0allow a current draw of 160 Amps at 48 Volts, and will produce level flight power for about 22 minutes at this rate.\u00a0 These are, according to Pierre-Jean,\u00a0very safe batteries, but heavy.\u00a0<\/p>\n

Pierre-Jean’s new batteries are Li-Po, which will give 52 Volts at the same amperage, but are, in his estimation, less safe.\u00a0 They are also lighter, weighing only 6.6 kilograms (about 14.5 pounds), and have lower internal resistance.\u00a0 The pictures below show the relative size of the old and new batteries.<\/p>\n

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The electric Trikebuggy's original LiF2PO4 batteries<\/p><\/div>\n

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Trikebuggy's new, lighter batteries<\/p><\/div>\n

\u00a0You can\u00a0follow Pierre-Jean’s experiments on the Trikebuggy Owners’\u00a0Yahoo Group<\/a>\u00a0and see additional photos of his and other Trikebuggies. <\/p>\n