January 31, 2013
By Jim Moore
Sensenich is offering this composite prop, which meets ASTM standard, for $3,500. Photo courtesy of Sensenich.
Combining the smooth, lightweight operation of wood and strength comparable to steel, the latest composite, ground-adjustable propeller from Sensenich is the first made for the Van's Aircraft RV models to the ASTM F2506 standard, and the company said owners can expect an increase in performance. The distinctive “semi-scimitar planform” with a 72-inch diameter is specifically designed to improve takeoff and climb performance.
Photo courtesy of Sensenich
Van's announced in October plans to produce a factory RV-12 under the special light sport aircraft rules, and ASTM compliance will make the new composite prop from Sensenich a potential match. The company said the new prop has been tested so far on Lycoming O-320 engines, with other engine pairings now being tested.
Priced at $3,500, the composite RV prop has an anodized aluminum hub, and the pitch can be adjusted on the ground to maximize performance for climb, cruise, speed, or economy. The process takes a few minutes: remove the spinner, and adjust the pitch within a range of preset angles. Both blades move simultaneously and there is no need for protractors or similar tools. Then tighten the bolt, replace the spinner, and fly.
“We have been testing and refining this prop for three years, getting it right before introduction to the public,” said Don Rowell, president of Sensenich, in a news release.
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