开云体育

Hello Gary and everybody,

I would like to ask a question about a problem I described in the past.

I tried to optimize my system for astrophotography. I recognized some backlash in my system. Gary gave me some very important advices so the problem is less important than before but there still is something wrong. The gears have no backlash and also the reductions, in my opinion they work well. When the system is still and I try to move the shaft with my hands everything seems strong with a very small amount of backlash, absolutely acceptable, so I could not explain the reason why when at low speed I change the direction, I have to wait 15 or more seconds to see a changing in the directions. The .dat file has been updated as Gary told me so the problem does not depend on it. I have a theory and I want to share it with you.

I show you a video (please let me know if you can see it properly). When I change direction (here is at high speed) the gear moves in the other direction quite quickly with a very small amount of backlash. The problem is that even if the gear starts to move in the opposite direction the structure starts to move after a certain amount of time. This “angle” when the roller rotates but the structure is still, is the reason that let me wait several seconds before I see in the ocular or in the camera the movement. In the video the roller starts to rotate in the opposite direction but the telescope starts after a while. I really don’t know what is the reason of that but in my opinion this is something that I believed was backlash of the gears, but actually it is not. Probably it depends on my structure. There is a sort of delay between the movement of the roller and the action on the structure. What do you think about it?

Thank you for your help.

Have a good day.?

Filippo