More C/L Links
Join the NCS. Send your Name, Address and AMA number to:
Navy Carrier Society, 225 W. Orchid Lane, Phoenix, AZ. 85021
Membership is $6.00 (USD) per year
Non US membership is slightly higher.
The Navy Carrier Society is the AMA recognized Special
Interest Group for C/L Carrier flyers. There are 3 official carrier events flown
around the United States, Class I, Class II and Profile Carrier. There are also
several unofficial events, Sportsman Profile Carrier, .15 Carrier, Sig Skyray
.35 Carrier and Nostalgia Carrier. Almost all of the events are scored and flown
the same way.
Click here to download the
Navy Carrier Scoring Program for Windows.
Click here for .15
- 1. High Speed Score. The model is timed from a standing start until it has
flown 1/2 mile, usually 7 laps. The time is converted to mph and that is the
high speed score.
- 2. Low Speed. The pilot signals and the next lap begins the low speed
flight. The object is to fly as slow as possible during this period without
stopping, touching down, stopping forward motion or exceeding 60 degrees
nose high attitude (3 warnings are given on 60 degrees). The time is again
converted to mph and the score is calculated as 10 X ( High Speed / Low
- 3. Scale Points. Profile and Sportsman Profile Carrier award 10 points if
the model closely resembles a Navy Carrier plane. Class I and II award 100
points if the model is built to within +/- 5% of scale of a Navy Carrier
- 4. Landing Points. The pilot signals intent to land on the next lap the
landing phase begins. If the pilot lands in a normal attitude, stopped by
the arresting hook then 100 points are awarded. If the model arrests with
the model in other than a normal attitude then 50 points are awarded. If the
model arrests but flips over on it's back or drops 1 wheel off the deck then
25 points are awarded.
The is a wide diversity of scores earned. High speeds can range from around
70 mph all the way to 120 mph. Low speeds can get as slow as 4-8 mph average.
Many times it is difficult to judge whether or not the model is stopped.
Control surfaces and throttle. Our models tend to be a bit more
complex than the typical C/L model. A typical model will have up and down
elevator, throttle and tail hook. Other controls can be added such as
flaps, ailerons and rudder. With the exception of the elevator and
throttle, the other controls are usually only deployed once, after the high
speed. They lock into position and stay there.
Throttle control. There are two popular ways of providing
throttle control, using a mechanical or an electronic servo.
- The mechanical system is accomplished by using a 3-line bellcrank
and 3-line handle. This system provides up and down elevator, just
like a standard 2-line system. It also adds an additional control
throw used to control the throttle. This throttle control fore-aft
movement is accomplished by actually letting the bellcrank move back and
forth about 1" from the handle end of the system. Sound
complicated? It is, but the bellcrank and handle do all the work for you and
are commercially available. The handle and bellcranks are manufactured
by Brodak and sold by them and Sig. Check with your hobby store.
There are several styles of bellcranks, I prefer the long span ones.
Make sure that when you buy one, that it is correct for your carburetor.
- Electronic controls. Fred Cronenwett, from Southern
California has been championing the electronic control system. I have
flown one of his planes and it works very nicely. You still control
elevation with the handle, but throttle, rudder, hook, flaps, aileron,
retracts, etc. can be controlled with signals sent up the wires.
- Whichever way you control everything, the secret is to make
everything work and work when you want it to.