This is a shaft drive Gori 3-blade propeller (untreated taper).
The drag resistance in a closed state is very small, providing advantages during sailing, and minimizing entanglements with "weeds" and ropes. During sailing: The blades are automatically closed while sailing. To keep the blades in a closed position, the shift lever should be put in reverse to lock the shaft. When going forward: By putting the shift lever in forward, the blades will automatically open to the forward position. To switch from "overdrive" to normal forward, the shift lever should be put in neutral and the boat's speed reduced to about 1 knot, allowing the blades to close before shifting back to forward. When going in reverse: The blade position in reverse is 180 degrees from the forward position, and since it uses the same shaped edge, it is very efficient even in reverse. Forward overdrive: The overdrive function is achieved by first putting the boat in reverse and then shifting the lever to forward while keeping the propeller in reverse. This allows for a more powerful forward thrust while maintaining the blade state of reverse.
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The 3-blade propeller is much better balanced compared to the 2-blade, resulting in less vibration and more efficient propulsion. Additionally, the "Gori 3-blade propeller" features an "overdrive function," designed to achieve the same speed at lower engine RPMs.
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Our company was established in 1969 and is located in Shirai, Makinohara City, Shizuoka Prefecture, as a domestic yacht manufacturer. Initially, we only manufactured yachts, but we also entered the RV and camper van industry, which shares many similarities with yachts, and began offering interior construction for camper vans and special vehicles, as well as selling parts. We handle various custom-made products centered around FRP-related items, such as FRP sinks, custom products, and shells for mobile sales vehicles. Please feel free to contact us with any inquiries.