Speed Reduction Drive Videos
Valley PSRU on a Big Twin


15:52
Installing a Valley Engineering Series Three PSRU on a Big Twin Engine.
Valley PSRU on a VW Engine


22:42
Installing the Valley Engineering series three PSRU on a VW engine.
High Performance with Valley PSRU


1:44
Gene Smith flies the high performance Backyard Flyer with Valley PSRU.

Backyard Flyer HP at Airventure 2012


:22
The Backyard Flyer HP doing a short field takeoff at Airventure 2012 with a Valley Engineering PSRU.
Waterbug Airboat with PSRU


5:43
Larry demonstrates the Valley Waterbug Airboat with Valley PSRU.