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      • Among other innovations, Penn Yan was known for its patented "Tunnel Drive" concept, whereby a cavity was molded into the bottom of the boat's hull, partially enclosing the propeller and drive shaft. The tunnel drive system provided better boat speed and stability.
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  2. Among other innovations, Penn Yan was known for its patented "Tunnel Drive" concept, whereby a cavity was molded into the bottom of the boat's hull, partially enclosing the propeller and drive shaft. The tunnel drive system provided better boat speed and stability.

  3. Stock #156635 * * Motivated Seller * * Twin Mercruisers with Velvet Drive Transmissions, Tunnel Drives This 1979 Penn Yan 30 SF (Sport Fish) flybridge has tunnel drives, a large aft cockpit area, and creature comforts below decks should you be away from the dock overnight.

    • Toms River Twp, NJ
  4. Jun 10, 2008 · A veteran inboard mechanic with Penn Yan experience suggested manufacturing a "lip" made of bondo or fiberglass installed where the tunnel "flares" would reduce spray and cavitation and also switching to a 4-blade Ambush prop.

  5. Among his most notable inventions is the Tunnel Drive, which Penn Yan patented. Using a cavity that partially enclosed the propeller and drive shaft, Penn Yan’s tunnel drive system delivered higher boat speeds and hull stability.

  6. We are a group of dedicated former Penn Yan management, engineers and builders (yes, some named Amato) who have kept the flame alive! We offer insights and information that you can not get anywhere else from where to find the transom bracket in your Swift (and why you need to know) to how to adjust the rudder on your Tunnel Drive or even how to ...

  7. Among his most notable inventions is the Tunnel Drive, which Penn Yan patented. Using a cavity that partially enclosed the propeller and drive shaft, Penn Yan’s tunnel drive system delivered higher boat speeds and hull stability. Penn Yan was sold in 1979 and ceased operations in 2001.

  8. Aug 2, 2019 · 1989 PENN YAN 232 AVENGER. EXCELLENT CONDITION. 3RD OWNER. VERY WELL MAINTAINED. SHORE LANDER TRAILER INCLUDED. $8500. Edited October 21, 2020 by L&M.

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