Friday, July 27, 2012

The ZF 9 Speed Automatic - part 1

Last March Honda announced they'd venture into the new ZF nine speed automatic.  
One nice thing about gears is that you can make a decent estimate of the ratios simply by measuring how big they, relative to each other.  All you need is a good cross-section or cutaway view, a plot digitizer, and some patience.

ZF will give you the ratios and a stick diagram in the .pdf link above, but I've always preferred lever analogies.  Here's what I came up with:











- nzvyyx

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