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EQ6R-Pro worm period


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Can someone explain how to calculate the worm period on a EQ6R-Pro. I know it’s 479sec or thereabouts but how do you calculate it it based on the mount’s specification details. 
Thanks

Bill

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Bill, to quote TimK's reply to your post on Cloudy nights

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Assuming the mount has true sidereal tracking the worm wheel rotates exactly once in a full sidereal day (86,164.1 seconds).   Obviously the worm wheel must have a whole number of teeth (180, 176, 160, etc.). The division is then simplified  (86164.1/# of Teeth).

If the worm wheel has 180 teeth then the worm gear rotates once in 478.6894 seconds. (Ignoring backlash or periodic error)

According to EQMOD prerequisites  website the EQ6R-Pro does indeed have 180 teeth on the RA worm gear, giving 479.6894 seconds.  

Hope that helps

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17 hours ago, malc-c said:

Bill, to quote TimK's reply to your post on Cloudy nights

According to EQMOD prerequisites  website the EQ6R-Pro does indeed have 180 teeth on the RA worm gear, giving 479.6894 seconds.  

Hope that helps

Yes, thanks. I’ve now got everything I need. 👍

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