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Article #2057Electric Power Recomendations
From: John Moonan
Date: Tue, 26 Jan 1993 14:49
Date: Tue, 26 Jan 1993 14:49
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I'm a long time wet power flyer but this past summer I decided to build an electric powered glider for a change of pace. Ended up building a Goldberg Electra. Power is the stock motor with a Master Airscrew 2.5X1 gearbox and 12X8 folding prop. Battery packs are 6 cell 1400 SCR, 7 cell 1400 SCR and 7 cell 1700 SCE. It flys great and I've had a lot of fun with it for the last 6 months. Has a good climb on the 6 cell pack and very good climb on the 7 cell packs. Now the question: The motor seems to be drawing about 25-30 amps on a fresh charge. I say this because it blew 20 amp fuses after about 30 seconds of run but has not blown a 30 amp fuse yet. Is this a reasonable current for this motor? Would I be better off going to a 3.0X1 gearbox or a different prop? Am still using the original motor (has about 40 flights on it) and wondering how much longer I can expect it to last. Any suggestions for replacement motor (other then AstroFlight which are expensive) when the time comes? Would some of the modified motors that the car racers use work? How many turns, etc.?? -- THANX, John Moonan SYSOP, 495th R/C Squadron Groton, MA
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Path: arc1-ca.pugleaf.net!sparky!uunet!walter!att-out!pacbell.com!ames!agate!spool.mu.edu!hri.com!noc.near.net!news.bbn.com!news.bbn.com!jmoonan From: jmoonan@ccv1.bbn.com (John Moonan) Newsgroups: rec.models.rc Subject: Electric Power Recomendations Message-ID: <JMOONAN.93Jan26094904@ccv1.bbn.com> Date: 26 Jan 93 14:49:04 GMT Organization: BBN Communications, Cambridge, MA Lines: 22 NNTP-Posting-Host: ccv1.bbn.com