At 02:24 PM 10/3/2009, Karl Wolz wrote: >Seems it would be difficult to maintain an even 60rpm, or any other rpm, >without some sort of a readout. I can't afford a drill like that. Any divisor of 3600 (or 3000 if you're in Europe and most other places) can be easily checked with a *single* *standard, not CFL* fluorescent bulb, by marking a rotating disk with <divisor> evenly spaced marks. Once you're in the ballpark, slowly alter the speed until you see the pattern of n lines crawl to a stop with no ghost images. Your speed will be as accurate as the local power frequency, which in the US is pretty good. d |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.