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Solar Gravity 2018

Author Topic: polar aligned  (Read 587 times)

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Offline clive

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polar aligned
« on: 20:51:13, 23 November, 2014 »
it looks like im polar aligned about 7 minutes in south and 7 minutes east when looking through my eye peice the star was moveing a little bit to each side and then it goes back to the center what iv e read its the worm period  ill check on next clear nite my back s to bad to carry on to nite thanks to chris lx 200 and roger for the infor   i thould i couldnt do it because my mount was out of level   from here on i suposs the fun begins when i have a go auto guiding thanks 

Offline griz11

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Re: polar aligned
« Reply #1 on: 16:05:11, 09 December, 2014 »
Check a couple of things. First worm to gear clearance. Sounds like it might be a bit loose allowing the gear to rock a little. Check your balance. You don't want it in perfect balance. You want it to pull against some weight as it moves across the sky. Doesn't have to be a lot but when its pulling against the weight it will keep the gear against the worm so it can't wiggle around. There is always some clearance or it will bind but if you have too much and its not balanced it can create havoc.

Griz
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Offline mechanoid

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Re: polar aligned
« Reply #2 on: 14:17:26, 11 December, 2014 »
I always aim for as perfect a balance as I can, in all orientations.  That way friction will always oppose the motion for either axis, keeping a near constant load between gears.  If you don't, then there is the danger that there may be some orientations where the imbalance assists the motion. That you don't want !

Dave
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