Article View: rec.models.rc
Article #1832Re: Tachometers
From: Pete Foss PO/46
Date: Thu, 21 Jan 1993 16:55
Date: Thu, 21 Jan 1993 16:55
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In article 24776@hacgate.SCG.HAC.COM, lew@4ccvw46.scg.hac.com (Lyman Lew) writes: >In article <C10wo1.4ov@usenet.ucs.indiana.edu> ntaib@silver.ucs.indiana.edu (Iskandar Taib) writes: >>I am at the point of ordering my tach. The two possibilities are the >>Royal analog tach from America Hobby Center and the Tower Hobbies digi- >>tal tach. They both cost around $30-35. >that switch from off-2 blade-3 blade. It measures to the nearest 100 >RPM. The unit has a photo cell that senses the number of times light >is intererupted by the prop. How accurate it is, I don't know. It does >respond fairly quick though. You can test the accuracy (at least at one point) by pointing it at an electric light where you get 3600 rpm. PS. I was able to tach an electric airplane indoors by shining a flashlight through the prop at the tach.
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arc1-ca.pugleaf.net!sparky!uunet!haven.umd.edu!purdue!ames!saimiri.primate.wisc.edu!zaphod.mps.ohio-state.edu!rphroy!rposrim!pfossReferences:
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Path: arc1-ca.pugleaf.net!sparky!uunet!haven.umd.edu!purdue!ames!saimiri.primate.wisc.edu!zaphod.mps.ohio-state.edu!rphroy!rposrim!pfoss From: pfoss@cmsa.gmr.com (Pete Foss PO/46) Newsgroups: rec.models.rc Subject: Re: Tachometers Message-ID: <96764@rphroy.ph.gmr.com> Date: 21 Jan 93 16:55:14 GMT References: <24776@hacgate.SCG.HAC.COM> Sender: news@rphroy.ph.gmr.com Reply-To: pfoss@cmsa.gmr.com Organization: ................. Lines: 18 Nntp-Posting-Host: rposrim.gmr.com