Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!pilchuck!ssc!fyl From: fyl@ssc.UUCP (Phil Hughes) Newsgroups: comp.sys.atari.st Subject: Re: Floppy drive speed Message-ID: <797@ssc.UUCP> Date: Sat, 21-Nov-87 01:01:26 EST Article-I.D.: ssc.797 Posted: Sat Nov 21 01:01:26 1987 Date-Received: Mon, 23-Nov-87 02:58:05 EST References: Organization: SSC, Inc., Seattle, WA Lines: 18 Summary: use a strobe light In article , ws1i+@andrew.cmu.edu (William Manchester Shubert) writes: > > Somebody I know wanted to know how you alter the speed on your floppy > drive (to set it to the proper 300 rpm, or whatever it should be.) They've > gotten theirs open, found what they call a "meter" of sorts, but now cannot > figure out how to uncover the actual speed that their drive is running at. > Can anybody help? Most floppy drives have a strobe disk on the motor drive. To check the speed you need to strobe it with 60HZ. A neon bulb will do the trick. Either get an NE-2 and resistor and plug it in or get one of those $.49 elcetrical testers which is a neon bulb in a plasicc case, plug it in tio the ac line and hold it next to the strobe disk. -- Phil Hughes, SSC, Inc. P.O. Box 55549, Seattle, WA 98155 (206)FOR-UNIX or 527-3385 ...!uw-beaver!tikal!ssc!fyl