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Old 07-06-2009, 10:06 AM
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tnott
Oblonnygox

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Join Date: Aug 2006
Location: Adelaide
Posts: 221
Yep. Thanks Rod.

Mental, the teflon pads should only be fixed under the Alt. bearing if going with a flex-rocker/rigid ground board design, with the laminate glued to the top face of the ground ring.

If going with a rigid rocker/thin ground board design they need to be fixed above the feet of the groundboard, as in The Dobsonian Telescope, with the laminate on the underside of the rocker.

If you re-read A) and B) from my previous post I think you'll get the idea. The two approaches are like mirror images of each other.

If you do go with the flex-rocker approach the only slight down side is that the laminate on the ground ring faces up and can collect dust. I found that I had to wipe the laminate and teflon pads of the 16"Tridob each time I went out for a viewing session to keep the Az. motions nice and smooth.
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