Rans S-12, Manual

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09x01agl msw 10/01/2010
01A-1
MAIN GEAR LEG ASSEMBLY
1. Locate the parts shown in the parts manual
The use of a “D” size drill bit should be followed as described in gear leg assembly. Due to the
nature of the heat-treated gear legs it will be necessary to drill the gear legs to 1/4", while only
drilling the sockets to “D”. This will ensure the most accurate installation possible. Always drill
the gear leg with a drill press and cutting fluid.
2.
Slip the gear axle socket onto the lower end of the gear leg. Line up the hole in the socket with the hole
in the gear leg and drill using a letter “D” drill bit. Remove the socket, and drill the hole in the gear leg out to
1/4". Install gear leg socket using the hardware shown.
3.
Place the fuselage on a set of sawhorses, or other suitable work surface. Measure the depth of each
gear leg socket in the fuselage. Transfer this measurement to the top of each gear leg and mark with a piece of
masking tape. Install the gear legs with the fuselage in its upright position. Slide each gear leg into the sockets
on the fuselage until the tape on the gear leg is flush with the socket.
IMPORTANT: The gear legs must be
completely bottomed in their socket. It may be necessary to slightly ream the inside of the socket to allow the
gear leg to fully insert. It’s also acceptable to lightly sand the upper portion of the gear leg (spinning the end of
the gear leg over a disk sander works well). Both gear legs should measure equal length from a common point
on the fuselage. See
FIGURE 01A-03 . If adjustments need to be made to gear leg length, remove material from
the top of the longer gear leg. NOTE: Due to an internal doubler at the top of the gear leg socket, improper
insertion of the gear leg may result. It is recommended to bevel the top edge of the gear leg to help guide it
past the upper doubler. Failure to insert the gear leg to the full depth will exert excessive loads on the gear leg
and socket and may result in failure of the gear leg or socket. See
FIGURE 01A-03A .
FIGURE 01A-03