Help with Shugart SA801 8" floppy with 230v 50 cycle
cclist at sydex.com
Thu Nov 27 17:19:47 CST 2008
On 27 Nov 2008 at 22:20, Gordon JC Pearce MM3YEQ wrote:
> Only one of the pulleys should be crowned. If they're both flat, or
> both crowned, it will throw the belt. No, I don't know why.
Just checked a Siemens FDD-200 here--only the motor pulley is
crowned. I maintain that the speed is determined by the maximum
diameter. The purpose of crowning a drive pulley is to keep the belt
from wandering off the pulley; the lower parts of the crown actually
play little part in furnishing drive.
See, for example:
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