Does anyone have a suggestion on how to secure the Ford ring gear to the
reduction housing? Milo


You can try this trick.
Make the housing bore about .1 inch larger in dia. than the OD of the ring gear.
Glue the ring gear in the housing with red RTV.

Drill eight holes in the  pattern shown in the picture.
Use 5/16 18 tap drill "G" size drill.

Drill the "G" 0.2610 dia. tap drill holes down into the OD of the ring gear about .150 to .2 inch.
The ring gear is .3 inches thick before you get to the base of the gears.
Overall thickness is .4 inches including the height of the teeth.

Tap the holes in the aluminum housing with an ordinary 5/16 18 tap as far as you can.
Chase the treads with a 5/16 18 bottoming tap to the end of the aluminum.

Turn down the treaded end of the socket head 5/16-18  screws .1 to .15 inches long to
a diameter of .2 inches. Start at the ends of the trads

These studs will serve as a fail safe in the unlikely event the RTV bond fails in shear.

This gives a bit of cushion to the ring gear as planetary's are self aligning.

Drill the head of the screws and safety wire them.

Paul Lamar

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