I can't get anyone to answer my emails to sales@nexdome.com directly or by the online form.
I have purchased a new in-the-boxe's NexDome 2.2 with full automation (pre-2021) that was never set up. I have set it up without any issues except...
I need a solution to the shutter skipping problem. I have installed and added teflon tape everywhere the shutters slide over or against each other and also the dome. I have replaced the four 80mm wheels on top with 76mm wheels and added washers to center them in the shutter flanges. I have not installed the top retainers. I have tightened the stepper bracket mounting screws and adjusted the slide bearing behind the sprocket.
In short, I have done everything that is recommended in the forums and anywhere else online I can find. The single side drive seems to be unreliable by any normal standard.
Any solutions that I can purchase or modifications that will work with my pre 2021 Dome?
Either the new shutter kit and rotation or an additional left side track and steeper/gearbox mounting bracket so I can add another stepper/gearbox to make my own dual side drive.
Crickets from Lydell at the facebook group group as well.
Solved the problem myself by changing the 20 tooth sprocket to a 25 tooth sprocket I found on amazon which gets it deeper into the chain. The original smaller sprocket bottoms out when the set screw collar of the sprocket rubs against the uhmw track face so the full depth of teeth are not used. Also, changed the uhmw bearing on the mounting plate behind the chaim track with a .25 thick delrin bearing. That and the increased diameter of the larger sprocket make a pretty tight fit of the sprocket against the chain withoit rubbing on the uhmw track.
So far it has't required any ajustment of the bearing and it does not skip the chain anymore. If it proves be too tight, I have a .125 delrin bearing plate and a couple .040 abs spacer plates ready to go that I can use behind it to dial it in.
If it starts to stall the motor beacause of the larger spricket I can always flip the dip swithes on the tb600 driver to change the step mode from 1/8 step to 1/16 step to increae the torque by slowing it down.
As it is, it now works and opens and closes about 20% faster.