On Sun, May 5, 2024 at 07:41 PM, Frank wrote:
Their cup like design and spring steel material may not fully compress to give maximum surface contact/friction.? Their sharp edges coupled with joint movement may carve out adjacent surfaces.
This is not the case, Frank. I've been using Belleville washers for years. They compress at 6¨C7 pounds of load and don't go any further. They do not have sharp edges and don't cut into any surfaces, especially the surrounding steel flat washers I suggested. Once the knobs snug up, you have all the torque you need to keep the mount in place. There is no need to tighten any further to gain mount stability and lock ALT/AZ into position.
John
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Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, Sequence Generator Pro and PixInsight user
