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1954-2009 Rocky Mountain Modeleers
A few notes on building: Most models come with very good plans and instructions so you should need little
help. Build your plane's fuselage straight and watch out for warps in your wings and tail surfaces. Alignment is
very important if you expect your model to fly well. A Robart Incidence Meter is a valuable tool. Keep the gaps
between the wing and ailerons to a minimum -- under 1/16 inch and closer to 1/32 if possible (likewise for the
stabilizer/elevator and the fin/rudder gaps). Be certain that all the pushrods move freely and don't bind or rub
against anything. Connect push-rod ends with Z-bends or clevis connectors. E-Z connectors can be used for
throttle connections but don't use them on your control surfaces; they tend to disconnect too easily. Avoid
metal-to-metal contact in your push-rod connectors. It can cause interference in your receiver. Also try to
route your antenna away from servo wires to avoid interference. Before covering your model, be sure to seal
the wood around the engine firewall and fuel tank compartment with a couple coats of fuel-proof dope or
polyurethane. Most modelers build with CA glues (super glue). Heed the warnings about working in a well-
ventilated area. Some people are allergic to the flumes of CA and may have to use the more expensive
odorless types. If you are allergic the symptoms are similar to a bronchial infection with chronic coughing. Quit
using it for a few days and see if you feel better.
(Editor's note) Some early wing failures have been attributed to the main wing joint where the two wing halves
have been glued together. ARFs are a little more prone to this failure because an individual is led to believe
everything has been taken care of. I would recommend adding a six-inch wide fiberglass band around the
wing main joint. You can decide if your main wing joint needs this band by considering the following; If your
plane weighs six pounds and you have to pull-out of a high speed 4G dive (someone calculate the real weight
and I'll publish it), then the main joint has to support 24 pounds of weight. The wing can be bench tested by
placing the left and right side of your wing on flat wide supports (no point source) and then gradually add 24
pounds of weight on the main joint. If you see the wing sag, consider using the fiberglass band.
Several good books are available to help you get started. You can get them from your local hobby dealer or
from one of the RC magazines. You should read at least one of them. Another excellent source of information
is the Tower Hobbies catalog. Not only will you have hours of fun drooling over the goodies in the catalog but
also you will find it to be an invaluable reference, and it's only three dollars. Just look for their ad in the
magazines. Keep in mind that anything you might get from the catalog can also be ordered through your local
hobby dealer, usually for the same or nearly same price, and you get better "product support" and help the
local community if you shop at your local dealer.
Recommend List of Beginning Airplanes and Equipment
Note: This list will probably never be complete or on the leading edge. The club will try to be responsive to new products as they
are introduced and flight-tested. However, no one in the club can dedicate all their time and/or resources to build and fly all the
new models, so as new pilots bring their planes to the flight training program, we will make note of the plane's or equipment's
characteristics. If we see there is interest by the pilots and local hobby stores, we will update this list.
FIRST AIRPLANE (BALSA KIT - order does not indicate rank)
FIRST AIRPLANE (Almost Ready to Fly - ARF)
FIELD EQUIPMENT
Disclaimer: There is probably 100 years of opinion and observations from instructors and seasoned pilots
presented here. Please do not take any of these opinions as fact. Rather, use the data as points to consider
and discuss with your friends as you progress with your flying adventures. Remember that the more
information you have up front, the better you are prepared to make the right decision for you.
This is by no means a complete treatise. Flyers or Manufactures, if you see an error or omission, please send
email to the address found on the RMM home page.
Thank you for your input.
| Model | Wing Span | Engine Size (at our elevation the alrger engine is better) | Comments |
| SIG Kadet Senior | 78" | .45-.61 (.61 is recommended) | Three control-model. No ailerons. However, you can add them. This plane suits the 50 years old and older gang because of its large size and slow flying. Stick construction reduces weight. |
| Great Planes Trainer Sixty | 65" | .45-.61 (.61 is recommended) | No comments |
| Goldberg Eagle II | 63" | .40-.46 (.46 is recommended) | Excellent first plane and one of the more popular planes. |
| SIG Kadet LT-40 | 70" | .30-.46 (.46 is recommended) | The LT-40 builds square by using interlocking plywood fuselage sides.This kit has been built and flown by several new pilots. They really like the LT-40 gentle handling. The LT-40 kit was used to built a cross-country bush plane. |
| SIG Seniorita | 63" | .40 | If you like the .40 size engine, this is the plane to use. Stick construction reduces weight. |
| Hobby Loggy Telemaster 40 | 73" | .40-.46 (.46 is recommended) | Builds fast using sheet balsa sides for the fuselage. Heavier than the stick constructed planes. This was my first airplane. |
| Model | WingSpan | Engine Size | Comments |
| Hobbico SuperStar 50 AWARF | 69" | .60-.61 | Larger size gives improved stbility over the 40 size planes. |
| Hanger 9 VRTF-Easy2 | 64.75" | .46 | Can be built by an experienced builder in two hours! |
| Hobbico Avistar 40 | .46 | Excellent 40 size plane. Will take you past the trainer stage and on to aerobatics. | |
| PT-40 ARF | 60: | .35-.46 | 90% pre-built |
| Hobbico Airvista | 62" | .40-.46 | Recently announced in the local hobby store. Another VRTF. No data. |
| Sig LT-40 ARF | 70" | .40-.46 | Good looks. Sig is a well known manufacture of model planes |
| Basic | Advanced | Deluxe |
| 1.5 Volt Hobby Battery | Ni-Starter | Ni-Starter |
| Glow Plug Connector | Hand operated fuel pump | Electric fuel pump |
| Fuel bulb | 12 volt electric starter | 12 volt electric starter |
| Chicken stick or leather glove | 12 volt battery | 12 volt battery |
| 12 volt battery charger | 12 volt battery charger | |
| Field tote box | Field tote box | |
| Power panel | ||
| 4-way wrench | 4-way wrench | 4-way wrench |
| 1 gallon of 10% to 15% fuel | 1 gallon of 10% to 15% fuel | 1 gallon of 10% to 15% fuel |