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- Path: 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
-
-
- 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.
-