Celestron 8SE Dobstuff 13.1": Swayze refigured Coulter mirror, 6 pt mirror cell (2 pt edge support) and CF focuser board made by me StarBlast 4.5 ST80/PortaMount II Zhumell 20x80/Oberwerk 15x70 on a Seronik-style tripod boom mount Hubble Optics 18 inch F/4 mirror.
20 inch f8 Chief Ed Jones designed and a 17 f9 Zanbuto Wide Band Chief Mike Jones designed .Both unobstructed telescopes .
Jeff Morgan - Wile E. Coyote School of Telescope Making
Quote:Probably you are referring to the thread here.The brake in question operated by a knob-operated pad of some type pressing against the side of the bearing.Don did specifically address one of the concerns about this that I had - he emphasized that the rocker box had t be braced against flex from the lateral pressure.Two friction pad designs are discussed. At first Don used what was basically a big washer for supplying friction, requiring the knob and axle be close to the edge. Then it was proposed that the knob compress a lever with the brake pad on the end, which is it appears what Meade does on its LightBridges.Taking Don's advice on the rocker box, and the success that he (and Meade) has with this approach that is probably the way I will go. The lift block idea is not all that complicated, but it is more complicated than the lever side brake.
Quote:If you can rebalance slightly so the scope just barely stays in place when the 31mm Nagler is in use, that may help. If you can increase the UC weight (add that finder you wanted?) and rebalance, then the significance of the EP weight is smaller, and it may help.If you can move the altitude bearing pads, it may help.My favorite (due to my age): with an f/4.4 scope, the exit pupil with the 31mm ep is 7mm. Swapping the 31mm for a 26mm gives a 6mm exit pupil and saves you 10 oz.