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Reply to "550 Spyder Replica Wanted"

@mhconley posted:

Something I'm trying to wrap my head around and simply cannot so let me ask a dumb question... It seems to me a VW engine & tranmission spun around 180° would provide 4 reverse gears and 1 forward. How does it work?

Martin

You move the ring gear to the other side of the pinion head and it outputs the opposite direction.  The early VW and Porsche boxes were designed with this in mind, and you can even do it in the slightly later 915 series Porsche box with a minor amount of machine work for ring gear clearance, and a little machine work to the 2nd gear slider so it doesn't contact the ring gear bolts.

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