ATM Nut.6" F15 Jaegers Refractor on Homebuilt EQ mount12.5" Homebuilt NewtProjects:16" F7.2 Reflector
nOOb with a ETX-80, ETX-90 and a Coulter Compact Odyssey 10.
Quote:If there is pressure between both surfaces and the ball, it will act like a gear. Apply too much torque, and yes, the balls will slide. If there is too much slippage, you will need to increase the pressure between the plates/balls.
Quote:What do you mean a smooth easily made lead screw? Please explain further or even post a pic/diagram if able.Thanks,Todd
Quote: I use a leadscrew with backlash compensation with my focusers and have no need for secondary planetary reducer. Also I use a self-lubricating material for the nut(s) with a SS leadscrew so no grease or oil is needed
-DannyMy warehouseMy Channel
Quote: I think a hydraulic drive would be even better.
I guess one thing that I don't understand is how the bearings have enough friction against the shafts to transfer the rotation from one shaft to the other.
Jason Lovettsville, VA US AT12RC 6" Questar Astro TMB 92mm LS
Quote:There is a big difference between what one imagines would work better and that of a design that has been built and proven to work.
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.
Quote: They are designed to be able to slip a little
Quote:Do you or anybody else on this forum have a pic of a focuser with a lead screw design?
Quote: Do you or anybody else on this forum have a pic of a focuser with a lead screw design?
Refractors Reflectors Two Cats A few eyepieces