Van's has published OP-58, an optional (OP) plan set which describes the installation of lower-cowl louvers in the RV-6/6A. RV-7/7A and RV-9/9A engine cowls (note: this kit does not fit other model cowls). The louvers may be used where additional exit air flow, such as for cooling purposes, is desired.
You can order kit "COWL LOUVER KIT" from the Van's Aircraft online store or by calling the Van's order desk. Cost for the kit is $8.00 plus shipping and it includes parts for creating louvers on both sides of the lower cowl. Complete instructions describing cowl modifications and installation of the aluminum parts included in this kit are found in the OP-58 document. The builder/installer will need to modify the lower cowl and will supply fiberglass fabric and other materials used during installation.
You may download the OP-58 plans/assembly instructions at this link.
greg
You can order kit "COWL LOUVER KIT" from the Van's Aircraft online store or by calling the Van's order desk. Cost for the kit is $8.00 plus shipping and it includes parts for creating louvers on both sides of the lower cowl. Complete instructions describing cowl modifications and installation of the aluminum parts included in this kit are found in the OP-58 document. The builder/installer will need to modify the lower cowl and will supply fiberglass fabric and other materials used during installation.
You may download the OP-58 plans/assembly instructions at this link.
greg
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