Sonerai 2 stretch
The Sonerai II-LS, Low-wing Stretch, and the Sonerai
II-LTS, Low-wing Tri-gear Stretch, make up the rest of the Sonerai
family of VW powered homebuilt aircraft. The front cockpit of the
II- LS and II-LTS is 28" long and the rear cockpit measures 30"
long. Both cockpits measure 23.250" in width. These two aircraft are
different from the stock Sonerai II in length, wing loading and
useful load. The Sonerai II-LS and II-LTS were designed to give the
passenger additional room and more pilot headroom.
The Sonerai II Stretch series are low- wing, two place tandem
aircraft, that are flown from the rear seat solo. Both the II-LS and
II-LT are designed to be powered by a 2180cc (or larger) VW Aero
engine conversion. This is because of the increased useful load.
All models of the Sonerai II Stretch use a minimum of different
sizes of materials to reduce the cost, without hampering the
integrity of the design. The wing is all aluminium and is composed
of two panels that easily fold along side the fuselage enabling the
aircraft to be towed tail first on its own gear. Stainless steel
cherry rivets are used to skin the wing. The fuselage and tail
surfaces are constructed of standard sizes of 4130 steel tubing that
are fabric covered. All aluminium sheet used is 2024-T3 .025" except
for the spars which are .040". The fibreglass cowling removes easily
to allow complete access to the engine, magneto, tank and
instruments. The landing gear is made from 2024-T351 5/8" aluminium
and uses 5" wheels with 3/4" axles. A tapered tailspring rod is used
to support the tailwheel (II-LS), while the II-LTS features a nose
wheel. Both of these aircraft feature a 10 gallon main tank with an
optional 6 gallon auxiliary tank which mounts in the turtle deck and
baggage can be placed behind the seat.
The Sonerai II-LS and II-LTS are an excellent choice of VW powered
homebuilts for the first time builder. Both aircraft offer room,
comfort, economy and speed, and makes the II-LS and II-LTS a great
"basic" cross country aircraft.
rate of climb
landing distance, ground roll
limiting and recommended speeds
design manoeuvring speed (Va)
never exceed speed (Vne)
stall, power off (Vsl)
landing approach speed
All specifications are based on manufacturer's