The Bf 109T details include a lightened, two-line bellcrank,
removable hatch for radio equipment, and the battery. Conley
Eric Conley’s next . 15 Carrier model will
be a Bf 109T with a larger wing and 2. 4
GHz throttle control. Conley photo.
. 15 Navy Carrier, which he hopes to be an improvement over the
Messerschmitt Bf 109T model from roughly 10 years ago. It will use
the newly allowed 2. 4 GHz radio control for throttle and operate the
elevator on two lines. He has some interesting ideas, as you can see
from the photos.
Eric is using an internal-combustion engine on this model, which
is a change from the electric . 15 model he has been flying for the last
few years. He believes that the current battery technology does not
allow for optimum low-speed performance because of limited battery
capacity within the 2.5-pound weight limit of the electric . 15 rules.
The new Bf 109T will be enlarged for better low-speed
performance. The new wing has two additional bays on each tip,
bringing the wingspan to 33. 5 inches and the wing area to 247
The horizontal stabilizer is also increased to a 15-inch span and 48
square inches, including a 27-square-inch elevator. The stabilizer is
asymmetrical with the inboard side an inch longer than the outboard
side. Eric believes that this feature will result in better control as
the engine’s 11° offset results in most of the propeller blast being
concentrated on the inboard elevator.
Power will be a Nelson . 15 FISE fitted with a Perry 2400 carburetor
and turning an APC sport 7 x 4 propeller.
The radio system used to control the throttle results in an
additional 2. 7 ounces of weight. Most of this is battery weight. In
Eric’s opinion, the extra weight is more than offset by the simplicity
of setting up and operating the system compared to the more
traditional three-line control setup.
Only three months remain to get ready for the Nats.
Navy Carrier events will be flown Tuesday through
Thursday, July 15-17, with processing starting on
Monday evening. The annual Navy Carrier Society
(NCS) banquet will take place on Wednesday evening.
I hope to see many of you there!
131 Model Aviation APRIL 2014
An asymmetrical stabilizer exposes more area to propwash from the
offset engine. Conley photo.