1600GTO Counterweight Shaft Adapter with Aluminum Bronze Insert (S1600CSA)

10-14-26 The S1600CSA has been discontinued and is no longer available. If one is damaged (such as cross-threading), it may be possible to repair it. Contact Astro-Physics support for details.

The following historical information is provided for your reference. 

If your 1600GTO mount is is frequently used as a portable mount, you may wish to consider upgrading to this counterweight shaft adapter.  The aluminum bronze insert will reduce the likelihood that you will damage the threads by cross-threading when you attach your stainless steel counterweight shaft. 

This countershaft adapter can be used on all 1600GTO mounts with or without absolute encoders. 

Installation Instructions: Simply remove the original counterweight shaft adapter and install the new one. Note that both components were designed with a through hole into which you can insert an object, like an Allen wrench, to either loosen or tighten the adapter.