Originally Posted by samb

A slight diversion to talk about thrust rings since I haven't built a cluster Saturn or used any Boyce aftermarket products.

3-4 wraps of quarter inch around the aft end of the motor will prevent forward movement during the thrust phase when seated against the motor tube.

2-3 wraps of half inch around the end of the exposed motor tube and motor will prevent aft movement when the ejection charge fires.



FWIW, I would probably use the kit hook and thrust ring for the 24mm center and buy or make some hooks and rings for the 18mm outboards. Maybe less flexibility but one less complexity point. Old windshield wipers are a good source of flat spring steel.

Hope this helps.