Quote:
Originally Posted by tbentley
Too advanced for me I'm afraid.
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What about letting air out of a bicycle tube?:
http://members.cox.net/tfangrow/hissdrive.html
I've wondered whether it might be possible to make a simple hand-operated EQ platform based on the same idea as a Dob friction bearing. Ie., rather than have the EQ platform move on a couple of roller bearings or wheels, just sit it on a couple of teflon pads. To track an object, you'd still need to push it by hand, but you'd only need to worry about one axis rather than two.
Picture a 30cm section of fat PVC tube sitting in two V shaped wooden blocks with teflon pads (and pointed at the SCP). The platform is bolted on top of the PVC tube in such a way that it sits level. The trick would be getting enough friction so it doesn't tip over but it's still movable.