: Aileron & flap seals
My duct-tape experience indicates that flap seals yield +1-2mph. Aileron no speed,
but slightly increased roll response.

: stabilator seals
Don't know about those

: flap track fairings
Or those

: wing root fairing
Seems like they might help

: landing gear/brake assembly fairing
Allegedly provide big benefit... +5mph or so. We're working on getting a field
approval for our PA-28-180 to use Warrior fairings.

: wingtips with landing lights

: There is definitely some speed increase, which is nice. However, in
: my opinion the best value(s) are the wingtip landing lights followed
: by the improved pitch/roll authority with the aileron and stabilator
: seals.

Not that you even *asked* for another opinion, but I have been amazed at the
different the AMR&D VG's make on slow-speed response. Dropped power-on stall by 15mph
lightly loaded (60mph down to 45mph IAS dirty). Power-off stall by 5-10mph depending
on load. Climb increased, and significantly decreased power-off glide decent rate.
Had to re-learn how to land. Imperceptible cruise speed change. Slight increase in
cross-wind landing liability due to the wings flying more/slower, but the same control
surfaces.

-Cory


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* Cory Papenfuss *
* Electrical Engineering candidate Ph.D. graduate student *
* Virginia Polytechnic Institute and State University *
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