LoPresti Tiger Cowl
cowl mod for the Grumman Tiger is in production and has been well
here for Cheetah / Traveler Cowl info.
The LoPresti Tiger cowl
consists of a vertically split nose bowl made with carbon fibers,
a cowl-to-prop "baffle" seal, a new cooling air exit,
and a separate NACA scoop for engine combustion air. The combination
of efficient circular inlets, a prop seal and the NACA duct that
does not "rob" any cylinder head cooling air effectively
reduces oil, head and induction air temps.
LoPresti, who optimized the Traveler design to create the Tiger
more than 25 years ago said, "The basic R&D for the Tiger
was done in three months in 1973 without any computers. Experience,
intuition and a strong sense of urgency drove the design. Our
intuition proved to be very good. Today we have 26 more years
of experience. We can make any airplane go faster. Not
only is the Tiger faster now, but engine cooling is improved!
The Tiger is now a more efficient "cat" and has
a fresh new modern look that enhances the Tigers overall
in 1973 at Grumman, our experimental Tiger gave us 172 MPH. Given
the right circumstances, I feel that we have a good chance to
reach this goal with additional mods."
Flight testing showed that we
"found" 5 MPH with a prototype nose bowl that had a
less than perfect finish.
This RH Naca duct is
for the Tiger only.
The Cheetah has a
NACA in the forward cowl.