Sonex is pleased to announce that Cooper Aircraft Corporation has introduced new, updated Sonex installation kits for the Rotax 912. These new installation kits are designed to work with Sonex Ring Mounts for Rotax installation, and are compatible with both tailwheel and tricycle gear installations in all Sonex aircraft models.
Sonex ring mounts are designed to work with Rotax part number 886-563 ring units, and utilize our popular ACV-J01-10 Jabiru Shock Mount rubber bushings as a robust, low-cost alternative to expensive Rotax engine shock mounts. Learn More.
Onex/Rotax Flies
Cooper Aircraft Corporation punctuated the release of their updated installation kits with flight of thier first Rotax 912/Onex installation. The aircraft, completed for Onex builder Mark Ferstl, uses their new cooling system designed to work with Sonex Ring Mounts. The Onex with 100hp Rotax 912ULS posted some impressive performance numbers with sustained climb rates of 1,300 to 1,400 fpm at 100 mph with outside air temperatures of 80 degrees on the ground at their Tuscon, AZ base of operations. Cruise speeds were clocked at 165 mph IAS and 180 mph TAS at 5300 RPM and 4,000′ msl. At the same altitude, max continuous RPM of 5500 RPM yields 170-175 mph IAS and 190-195 mph TAS. All climb and cruise testing were performed with temperatures in the green.
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Performance of the Onex with the Cooper Aircraft Corporation Rotax 912 installation is impressive!
Fit of the Rotax 912ULS in the Onex cowling with the Sonex/Rotax ring-type engine mount.
The Cooper Aircraft Corporation Onex/Rotax installation conforms with the form-factor of the Onex cowling nicely, allowing great performance with minimal cooling drag.
