IEXOS-100 backlash compensator

The iEXOS-100 equatorial mount has a problem where the clearance in the worm gear mesh is uneven during rotation. It is jammed in one position and loose in another which causes precise tracking issues.

This project is a holder for wormshaft that should solve this problem. The backlash compensation is about 1mm and should be more than enough.

There are a two stainless steel springs used to create preload in worm gear:

| | |
|-|:-|
|D | 3.7 mm|
|L | 20 mm|

The bearing ball at the back side of drawer should have a diameter of 1 mm.

Assembly:

- Place case on flat and levelled surface round hole down. put bearing balls in each groove.
- Insert drawer, make sure that balls are in place.
- Insert springs through back sides holes.
- Insert back plate to create springs tension. Keep eye on proper alignment of springs grooves on plate.

Installation:

- Loosen two bolts that holds stepper motor holder.
- Loosen 4 bolts that holds stepper motor itself - this is import