> Interesting < [ bondline.org] Ken Blackman received approval to move the "Sparrow Hawk" high compression STC from Cessna 152s to the AA-1C Lynx, SA641NW.
Maynard Crosby received approval for an installation of the Tiger O-360-A4K in Cheetah and Traveler airframes, effectively converting the Cheetah to a Tiger, though the Traveler became a "Super Traveler" with the limitations in fuel capacity and CG limits from the smaller tail.
Peter Otten received SA5452NM to install the 200 HP IO-360-C1C6 and Hartzell C/S prop from a Piper Arrow onto a Cheetah. As part of the conversion, the option of increasing the GW by replacing the center spar with a Tiger part allowed recovery of the UL lost with the change in engine and prop weights. After years of keeping the multiple STC unavailable to the public, Peter sold the rights to FletchAir, and they eventually sold the rights to Scott Jernigan, who re-engineered the drawings and coined the term "Hyper-Cheetah", saying that if the 180 HP Tigerization made a Super Cheetah, the next higher superlative would be "Hyper", which coincided with his Hyperdyne Systems business name.
John Coze received approval to install a 260 HP IO-540-D4A5 engine and Hartzell C/S prop on his Cheetah, SA4966NM.
There are many other one-off conversions with 4 and 6 cylinder engines installed on the Cheetah/Tiger airframe, but none are multiple STCs or available to the public at this time.
Message sent from a rotary pay phone... Bengie [ Linked Image]
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