Path: utzoo!mnetor!uunet!seismo!sundc!pitstop!sun!decwrl!decvax!watmath!cgwong
From: cgwong@watmath.waterloo.edu (Clint Wong)
Newsgroups: comp.sys.cbm
Subject: Re: 1541 disk alignment (1541 Physical Exam)
Message-ID: <16911@watmath.waterloo.edu>
Date: 12 Feb 88 15:09:01 GMT
References: <POSTNEWS23218@NADC.ARPA> <2511@mibte.UUCP>
Reply-To: cgwong@watmath.waterloo.edu (Clint Wong)
Organization: U. of Waterloo, Ontario
Lines: 14

In article <2511@mibte.UUCP> jbh@mibte.UUCP (James Harvey) writes:
>
>By the way, spindle speed is critical.  It must be within a
>couple of RPM of 300 RPM.  I was able to make a dandy strobe disk
>by doing a pie chart of 48 spreadsheet cells all of which had the
>same number.  I used Lotus123 but any pie chart should work.  I

This is probably true for most other types of drives but the 1541 has a
strobe disk on the bottom (inside) for 60Hz and 50Hz.
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