Valley Engineering, LLC was
formed in 1998 to manufacture and sell the prop speed reductions units for VW engines.
These PSRU's have undergone ten years of research and development. The
company is a father and son partnership between Gene Smith, mechanical engineer and
retired crop duster, and his son, Larry Smith. These units were designed and developed to
meet the performance needs of their ultralights, trainers and light planes that they had
been building since 1993. Testing showed these reduction units to be very strong and
lightweight, yet they yielded outstanding and unmatched performance.
We are proud to introduce our new Series 3 poly-v reduction units specifically designed for the
high-power engines available in our Premium Engine packages. This new drive comes in wide
range of ratios, making it easy for us to custom design the drive to fit your aircraft's
For smaller engines, we now offer the Valley
Engineering Poly-V reduction drive that was introduced at Oshkosh '06 on the Back Yard
Flyer UL/SP. Go to our Back Yard Flyer UL/SP page for more information.
(The image below is a
thumbnail. Just click on the image to see a much larger image.)