Tuck-in motor modification for Losmandy G11 equatorial mount

This is a tuck-in motor modification for the classical Losmandy G11 equatorial mount.

Losmandy mounts are all well designed for easy service & maintenance. However, for those vintage mounts, their servo motors are extruding outwardly and making them to be easily bumped into accidentally.  Losmandy has manufactured tuck-in version of mounts nowadays, but there are no tuck-in modification kits available for users to install by themselves.

The modification of G11 is straightforward. With the tuck-in adapter plate, one can complete the modification via either the pulley transmission method (with two GT2 T48 pulley wheels & GT2 belt 172mm in length, please see the following for more details.  https://www.printables.com/model/936574-dec-transmission-axes-cover-for-losmandy-g11t-equa ) or the  gear transmission method (via two 0.4 MOD T95 gears, one has center circle diameter 10mm, and the other has center hole diameter around 4.78mm).

Note that a ball bearing (with outer diameter 16mm & center-hole diameter 8mm, thickness 5mm) is also selected & installed to provide better supporting strength & rotation smoothness.

Also, the rotation axis is made from a 8mm-diameter brass cylinder bar with 36mm in length. Lathe it to 4.78mm-diameter with 5mm in length & adjacent with 8mm-diameter with 31 mm in length.

So the following items are required:

• Brass rotation axis for DEC & RA worm gears.

• 16x8x5 ball bearing for each axis.

• GT2 T48 pulley wheel: 2 are required for each axis. One with 8mm center-hole diameter & one with 5mm center-hole diameter.

• GT2 pulley belt: 1 is needed for each axis. Belt length is 172mm (or 86 teeth).

• Screw & washer: M3 screws & square M3 nuts are selected. The washer diameter is around 7mm. The length of cover fixing M3 screws is 30mm.