Elegant sailplane has the
looks of an airliner in the sky
The Crosswind was not built from the ground up, but as an adaptation of Bill Evans’ low-wing Seville sailplane that
was published in the May 1977 issue of Model
Aviation. The wingspan was reduced to slightly
more than 6 feet, and a K&B Veco . 19 and trike
landing gear were added.
The sailplane got the name Crosswind from
where it made its first flight—the Crosswinds
RC Club in Saugus, California—and how the
wind blew at this field, which was across the
runway at 90° much of the time.
Construction began with deciding what
type of wing panel skinning to use—1/16-inch
balsa or 1/64-inch plywood. Bill used wing
sheeting tape instead of contact cement, and
recommended using Corefilm. Next, 1/2 x 1/8
balsa was cemented and pinned to the leading
edge of each panel.
The fuselage sides, top, bottom, and
formers were cut from stock as shown on the
plans. The left fuselage side was glued and
pinned against the fuselage top, and 1/2-inch
triangles were glued and pinned against the
left side and top. This step was repeated for
the right side.
Fuselage formers were glued and pinned,
as were the front and rear fuselage bottom
sheets. Wing-skinning pieces of 36-inch-
long 1/16 balsa, tapered from 10 inches wide at one end to 7
inches at the other, were butt joined and spliced. Wingtips
were washed out to produce an up-aileron effect to work
against increased lift, resulting in a smoother and flatter
With wing panels joined at the center line using 5-minute
epoxy, tail surfaces were cut from straight-grained 3/16-
inch sheeting, and the fuselage was carved and sanded to
shape. A bottom hatch was cut in the fuselage for the radio
compartment, and wing openings were cut to accommodate
the main gear blocks.
Bill’s Crosswind was then covered and assembled. Bill
noted that the covering should be a low-temperature iron-on material such as Solarfilm because of the foam cores
used with the wing. If a fiberglass fuselage shell was used, he
recommended that it be painted white and that the builder
improve the stabilizer bond by drilling small holes through
the platform. This would allow the epoxy used in joining to
fill the holes for added strength.
If the engine wasn’t cowled, Bill suggested that a side
mounting be used to improve fuel draw and provide more
clearance for the nose wheel steering arm.
His next recommendation was to go fly and enjoy the
Crosswind because no flying instructions were needed. For
long, high-soaring flights, Bill suggested using medium to low
throttle when lift was encountered. When power ran out, the
aircraft could soar like any other glider.
“Don’t be surprised if someone remarks that it looks like a
747,” Bill said. “In silhouette, the canopy and the swept-back
leading edge, as well as the tail fin and rudder, do give that
Featured in the August 1981 issue of Model Aviation as
AMA Plans Service number 342, the Crosswind is available
for $14, plus shipping and handling. AMA members can
access the MA Digital Library on the magazine’s website to
read more about this airplane and its construction. See page
155 or go to www.modelaircraft.org/plans.aspx for ordering
109 Model Aviation DECEMBER 2015