This part has an improved tensioner design and allows more pulley teeth in mesh with the belt. This prevents belt skipping for very front-heavy scopes/lenses.
It also fastens to the RA ring using recessed M3 nuts rather than threading M3 screws into the plastic part.
This shows the two idlers and belt without the cover that holds the two shaft and screws onto the two posts on the mount.
The part is in the repo in the STL/All Latitudes folder and is named 11_DEC_motor_mount_v11_NEMA.stl and 11.1_DEC_idler_bracket_v1_NEMA.stl.
¶ Parts List
¶ Hardware
| Type | Specification | Quantity | Note | Store Links |
|---|---|---|---|---|
| Idlers | GT2 Idlers on bearings with a 5mm bore, 6mm belt width | 2 | Amazon | |
| M2 screws | 20mm | 2 | reinforces the idler shafts | |
| M3 screw | 12mm | 3 | 1 for the stepper and 2 to hold the cover on the idler shafts | |
| M3 screw | 16mm | 4 | 1 for stepper 3 to secure to RA ring | |
| M3 screw | 20mm | 1 | tensions the belt by pushing on the stepper mounting screw | |
| M3 nut | 4 |