SERVICE LETTER # 7
WING TANK FUEL CAPS
ALL Kitfox™ OWNERS WITH OPTIONAL WING TANKS
DENNEY AEROCRAFT COMPANY
TANK FUEL CAPS:
When flying the Kitfox™ with fuel in the wing tanks, the low pressure
area at the top of the wing causes enough of a vacuum in the tank to
prohibit gravity feed at cruise speed. We installed a 1 1/2” high
ram-air “pitot” tube on the top of the fuel cap to alleviate this
problem. We will add this modification to your fuel cap; but, since the
filler neck was welded in without any particular placement of stops, we
must have you send back the cap with the forward direction marked.
the fuel cap on the wing tank, making sure the cap is on tight.
Mark an arrow with a felt-tip pen pointing exactly forward on the cap.
This will enable us to weld the ram-air tube in the exact forward
position so it will function properly. We will make this modification at
no charge to you except for shipping and handling.