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TOPIC LISTINGS :
CAD Applications
cnc-modellbautechnik Bayer - CAD/CNC designing and producing high quality wooden model aircraft and boat parts. ( In German ) by Hans Joerg Bayer.
NextCraft - Multimedia tutorial CDs on model building and the use of CAD/3D applications.
RC CAD R/C Cad supplies a 3D, real-time visualization of your aircraft. Free download
Telehobbies R/C - The Computer-Aided Hobby Shop
Wings 2.0 - CAD software package to design model planes and other aircraft
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CALCULATORS
A list of Aircraft Calculators that may be of interest to modelers.
Aviation And Satellite Navigation/Position Calculators
Aviation And Marine Weather Sources
Aviation Barometer Converter Table
Aviation Density Altitude Calculator
Aviation E6B Computer Emulator
Aviation Fuel Savings Calculator
Aviation Speed And Distance Converter
Aviation Runway Crosswind Calculator
Aviation Weather Calculators
Bermuda Dunes, CA Area Airport Information
Aviation Carburetor CFM Calculator
Celsius and Fahrenheit Conversion Details
Cloud Altitude Calculator
Cost To Get A Pilot's License Calculator
Cumulus Cloud Base Calculator
Decimal Degrees And Radians Calculator
Individual Degrees, Minutes, Seconds, Radians And Decimal Degrees Calculators
Density Altitude Calculator
Distances Between Longitude And Latitude Points
Engine Compression Ratio Calculator
Aviation Hourly Fuel Consumption Calculator
Fuel Injector Flow Rate Calculator
Fuel Volume Calculator
Flow Rate Converter
Flying Distances Between North American Airports Calculator
Flying Distances Between World Airports Calculator
Flying Distances From Desert Area Airports Calculator
Flying Distances To Desert Area Airports Calculator
Aviation Glide Ratio Calculator
GPS Latitude and Longitude Converter
Internet Time Converter
Internet Time Calculator
Mach One Calculator
Mapping Scale Converter
Meteorology Conversion Factors Table
Metric Capable Calculators, Converters and Tables
Minutes, Seconds And Decimal Degrees Calculator
Model Airplane Life Size Scale Calculator
Model Airplane Scale Converter
Monthly Display Perpetual Calendar
Nautical And Statute Mile Converter
Octane Information And Calculator
Palm Springs, CA Area Airport Information
Pressure Altitude Calculator
Pressure Altitude to Density Altitude Conversion Table
Pressure Conversion Table
Pump PSI Calculator
Speed Of Sound Converter
Station Pressure Calculator
Straight Line Flight Distance Calculator
Surface Area Calculator
Sunrise, Sunset and Twilight Lunar Calculator
Temperature Converter
Thermal, CA Area Airport Information
Time Designation Converter
Unit Time Converter
Time Zone Converter
Time, Speed and Distance Calculator
A Different Approach To Time Zone Calculations
True Airspeed Calculator
True Airspeed Calculator VIA GPS
Vapor Pressure Calculator
Volume Calculator
Weight And Balance Calculators
Wind Chill Calculator
CA-Tips
(CLOGGING)
Here is a solution that will work. Buy a package of extra tips and don't mutilate the tip when clogged. Instead, put it in a tightly capped jar (baby food or olive oil), filled with acetone. Acetone will dissolve the CA and will not affect the nozzle. The next day it will be as good as new. Make sure the tip is dry and free of acetone before installing on the bottle. Remember, acetone is a fire hazard so treat it as such.
(STORAGE)
Everybody seems to have a secret on keeping CA adhesives usable for long periods of time. One of the most popular is to store the CA in the refrigerator. However, the answer may really be simply keeping moisture away from the opened container. Bob does this by storing the opened CA bottles in a plastic baggie that has silica gel desiccant bags included. The silica gel keeps the moisture out and the CA flowing.The silica gell can be revitalized by baking in you oven.
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Canopy Tips
( CHEAP REPLACEMENT )
A replacement canopy is sometimes a real problem. Try studying the shapes of various soft drink or other plastic bottles to find exactly the contour you need. You cut the area of the bottle where it necks down to the cap it a variety of sections to make windshields or entire canopies. Don't forget that heat, in the form of hot or boiling water may change the almost right shape to the perfect fit.
The plastic containers that hold your CDs comes in a variety of colors and can be shaped to form the WW1
and vintage canopies.
(CANOPY GLUE)
Formula 560 is an excellent canopy glue from the makers of ZAP.
(TINTING)
A easy way to add a different look to your creation is to tint the canopy a color that compliments your airplane's color
scheme. Rit Cloth Dye, available in most any supermarket, fabric store, or drug store will tint the clear plastic
quite well. Mix up the dye in luke warm water in a container large enough to immerse the entire canopy. Dip the canopy for period of one minute or so, until you get the feel on how fast the dye is "taking". Rinse in cool water and dry off. If it is not dark enough, dip it again. Sometimes it takes quite awhile. You can tint by making a fixture to hold only a certain part of the canopy in the dye.
Remedy for A Scratched Canopy Scratched canopies? Theres a great product made by Meguiar Co.
Their clear plastic cleaner... it works... and polishes your canopy at the same time... The product is sold by NAPA auto parts stores..... Meguiar's inc. irvine ca. 92713 usa...Happy flying
Chris AllenCanopy tinting
Canopy dying: There are several different methods in dying canopies. The first is using RIT dye to tint your canopy to the shade and tone that you want. First, there are two types of material which model airplane canopies of; 1) butyrate and 2) PEG. The PEG will not dye and will need to use one of the other methods listed below to tint.1. Get a package of RIT liquid dye the color you want to your canopy to be. You can use powder dye but must be careful that it gets dissolved and mixed completely or you may get spots on the canopy. If you are wanting a black tint, use smoke or dark gray, the pure black actually has a little red tint to it.
2. Get a bucket or container big enough to fit the entire canopy in. Some people use their kitchen sink as long as it is stainless steel. You still need to be cautious of any spills, they don’t come out.
3. Fill your container with hot water, as hot as your tap will produce. Using stove heated water may distort the canopy.
4. Pour in the dye solution and stir till complete mixed.
5. Put the canopy in making sure it is completely submerged.
6. Using a wooden or plastic spoon, lift the canopy out after about 5 minutes to check the shade. If you want it darker, put it back in and check on it every few minutes till it is just a little darker than you want. (remember, once the water is cool, the dye will no longer work)
7. Once it is just a little darker than you want, pull it out and rinse it off with cool water.
8. Let it dry and you are ready to install.
If the RIT dye does not work to your satisfaction or you have a PEG canopy, you can get some spray tint or paint. Testers and Pactra both make several different colors of spray tint in the small hobby sized cans. They are available at hobby shops and places like Meijers or Walmart. Three items are a must when spraying this tinting or transparent paint (how’s that for an oxy moron?)
1. Inside surface must be clean and streak free;
2. You should mask around the edge of canopy and spray paint to the inside;
3. You must spray this stuff on in several very light coats! (it’ll run like a waterfall if you spray too heavy)
If you are not real interested in a tinted canopy but just want it painted, you can paint the inside of the canopy with most any enamel. Krylon works well.
Holding Canopies CLEAR PARTS: Use white glue to attach canopies and windows to aircraft - this will not fog or ruin the plastic. You run the (big) risk of fogging,
scratching or even melting your canopies if you use super glue, or even normal modelling glue, rendering it worthless and unable to see through. Super glue can be applied to clear parts after it has been coated with Future Floor Wax (Aussie equivalent - Johnson's Super Shine) to prevent it from being ruined. Naturally, check this first on some scrap plastic before using on a 'live' project. Cleaning them (both injection and vacuform) can be achieved by using an alcohol based window cleaning liquid, applied with a Q-tip or cotton-bud.
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LINKS on this subject
3D canvas tutorial (how to design a canopy)
How to make canopies
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Cardboard Organization
Cardboard Organizer
Here's a great way to organize your work area. Take those cardboard tubes left over from your MonoKote and cut them into various lengths. Glue or tape them together like a pipe organ. Glue them vertically to a piece of wood to close off the holes on one end. Now you can set it on top of your work table to store your knives, pencils, screw- drivers, etc
Aidon Mazzoni andJim Herrmann
CLAMPS: Use wooden pegs (plastic pegs could risk being affixed) as clamps on flat surfaces like wings and fins or small round objects like some fuselages, missiles ettttttc. Rubber bands (doubled over) are good as clamps around the fuselage and there are also alligator type clips that can be used (be careful the teetttttth do not eat into what they are clamping - if in doubt, place a bit of masking tape bettttttween plastic and teetttttth!). Of course masking tape (or even Scotch Magic Tape) can also be used as a clamp, particularly where cowlings and cockpits are not very accommodating for pegs or rubber bands - just make sure you have secured the tape tightly.
Clevis Tips
(SECURING)
There is usually some plastic tubing provided in the package of clevis when they come from the hobby shop. provided Silicon fuel tubing, cut to about a 1/4" length will keep your clevis closed.
You should always use a 2-56 nut on the threaded rod to lock in the clevis once you get the clevis properly adjusted.
This lock nut prevents the push rod from rotating and thereby changing your control surface deflection. Most of the threaded push rod ends have the threads pressed on the wire instead of cut on with a die.The 2-56 lock nut becomes almost mandatory in these conditions and also allowsslop energy transfer.
canopy in the dye.
LINKS - Clevis Types and Setup
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Cleaning Tips
Dishwasher liquid soap maked a great cleaning agent to remove the fuel from your flown aircraft.
Finish off with Windex.
Ammonia : A 50-50 mixture of sudsless ammonia and water cuts through the grease in short order, and leaves no scummy film on the Avoid spraying any Chemical on engines and exposed radio switches.Use rubbing alcohol as a cleaning solution in engine compartments and around electronics. If use with a spray bottle, the alcohol can be blasted on to engines, engine compartments, etc. without necessity to rub the grease off with a rag. Give it a try.
Anodizing
Antifreeze : This website gives cleaning tips using antifreeze. Good for cleaning old or dirty engines.
Cleaning Superglue (CA) Tips After using a bottle of CA adhesive for a plane or two, the tip usually gets cured glue all over it. Remove the tip from the bottle and soak it in a closed jar of acetone. Nail polish remover also works, as long as it's the kind that contains acetone. After about an hour, the cured CA will gel, and is easily peeled off the tip.
Cleaning Planes Automobile windshield washer antifreeze cleaner works very well as a spray on cleaner for taking oil off airplanes.( if you put a small drop of dish soap in the spray bottle it will work even better.}
Cleaning oil soaked wood Cleaning fuel soaked balsa. K-2R will remove fuel from balsa wood very nicely . Just spray the K-2R directly onto area that you want to clean and the power will extract any fuel and oil from the wood. The power is then easily cleaned up with a damp rag. The K-2R will however leave the wood with a white finish. - Jim Dooley
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Colour Reference Charts - Part 1 = Urban Fredriksson's
Colour Reference Charts - Part II = Urban Fredriksson's
Humbrol Paint Cross Reference Page
Model Airplane Color Design - PC program that helps design paint schemes for model aircraft. By William Busto.
Control Horns
Control Horns - Control Rods
Control Links - Clevis Types and Setup
Converting Cubic Inches to cc's Sometimes there's a need to convert cubic inches to cubic centimeters (cc) or vice-versa where engine displacement is concerned. One cubic inch is equivalent to 16.39 cubic centimeters. So to convert from in3 to cc's, just multiply the in3 by 16.39 to get cc's. To convert cc's to in3, divide the cc's by 16.39 to get in3. And remember, a 7.5cc engine is the same as a .46 (pretty close).
Cutting Tips
Cutting covering
When cutting sheets of plastic shrink covering nothing beats glass for a surface to cut on, it will not dull the knife or slow it down when cutting. The covering material
will kind of stick to the glass if the backing is removed all by itself for easy cut ing. You can also use low heat to make it stick even better for critical cutting. You can use solvent to put together large panels of covering without it sticking to the work surface. The best place to find a suitable piece of glass is at the flea market. Look for an old glass
top coffee table. The rectangle ones work super if you have the room. Stay away from non-safety glass it breaks too easy…Saw this one somewhere….
(CABLE CUTTING)
If you have trouble cutting a cable without fraying it try melting some solder into the area you wish to cut. When hardened, use a Dremel cut off wheel or wire cutters to get a perfect cut.
Stranded control cable is difficult to cut neatly. Use a small amount of solder on the spot you are going to cut, then use a wire cutter, resulting in a quick clean cut. Oscar Lovrak
(COMPLICATED DESIGNS)
An easy way to cut complicated designs and numbers from Iron On Material is to draw out the design on paper.Then
cut paper to create a full sized pattern for the design. Use spray adhesive on the backing sheet.
The adhesive will grab the full size paper pattern (Make sure you lay down the pattern in such a way that the cut out is correct). Cut the material with a new #11 Xacto blade. A glass surface also helps with clean cuts.
When the design is cut remove the backing . You now have a template for future use.-
TOPIC LINKS- COMPOSITES
- Having a sticky time of it while using epoxy glue? Most epoxy glues in popular use can be cleaned up with ISOCOL which is an alcohol based substance available from most chemists f. It comes in a 375ml green plastic bottle and is also great for thinning epoxy so it can be used for fuel proofing balsa and plywood. And whilst on the subject of cleaning up, methylated spirits works well on wet Silicon. Either of these materials on your good shirt (you know, the one your wife asked you to change before entering the workshop) is bad news. However prompt action with the appropriate solvent can often give satisfactory results. It is also easier to remove excess material before it has set. If you have the misfortune to actually stick yourself to something with CA, don't panic, there are solvents available but acetone and cotton wool also works. It takes a little time but eventually you will be freed.
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REFERENCE LINKS
BELOW :
First rule in this Hobby..
DON'T FALL IN LOVE WITH YOUR AIRCRAFT.
Eventually they will be reduced to kit form if you fly them long enough.
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Molding Fiberglass Parts Moose Carbon Fiber - High-performance carbon-fiber landing gear for R/C airplanes. MS Composit MS Composit (Czech) Mugi U.K. NextCraft - R/C design and building featuring 3D design techniques and fiberglass mold making techniques. By Mike James. Nichter Prototypes/Creative Solutions : Source for prototypes,silicone molds,model making,patterns,sculpting,resin, casting,vacu-forming,carving accessories. Nida-Core Ozmods RAKA Boatbuilding Products Reece Coroplast Supply Reichhold Chemicals RnR Products Saarpor manufacture another Depron equivalent called 'Climapor' in Germany. Web site in English and seven other languages. They list their European retailers. Sea Commander -Specializing in scale fiberglass floats, streamlined structural mounting systems and kits. Scaled Composites LLC - Scale aircraft, tooling, manufacturing, composite structure designs Stan's Fibre Tech Strip-a-Kit Structures and Composites Laboratory System Three Epoxy Gordon Tarling can sometimes provide large sheets of Depron in the UK (700x1000mm). Technology Laboratory for Composites Thomas Models A great source for quality star trek resin kits and decals. U.S. Composites - Supplier of fiberglass and composites materials, carbon, polyester, epoxy resins vacuum pump Vacuum Bagging Wings Water based Polyurethane skin glassing Woolmer Composites UK suppliers of pre-formed carbon components. World Of Plastics (coroplast supplier) Ky. Andrew Zaf Supplier of 2mm translucent correx in Aust. Ex-Sydney.. |
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Crystals
Transmitter Crystals
Receiver crystals have to meet only one criterion: when plugged into the receiver, they must operate at the [design frequency] plus-or-minus tolerance. The total allowed frequency "error" (tolerance) is determined by the design of the receiver if filters, tolerances in oscillator components, frequency [in]accuracy of the crystal itself, frequency drift of the crystal with temperature variations, and aging of the receiver crystal -- plus errors in the center frequency of the transmitter (also determined by a crystal with its own tolerances as for the receiver crystal) -- and in the setup (tuning) of the transmitter's shift points.
Now, the transmitter crystal has an added requirement to that of the receiver crystal. First, it is of much lower frequency than the channel frequency, its signal being multiplied a number of times. But (very important!) the transmitter crystal must also meet certain "pullability" requirements; i.e., the frequency change per change in load capacitance. This is how the frequency shift or FM is achieved in the transmitter. In the transmitter, the shift points are individully set by means of two potentiometers or variable capacitors or a combination thereof.
It should be noted that these adjustments will be different for every crystal unless this "pullability" spec is tightly controlled by the manufacturer, which costs money.
From the above, it should be clear that you should always use the manufacturer's crystal so that you will stay within your radio's design limits. Don't forget: all these tolerances build up.
It is amazing that our radios work this well with all these tolerances, but the precision of the quartz crystal helps us here -- you can typically expect a max error in the order of between 3 and 10 ppm (parts per million), depending on brand, which means that your frequency error will be between 3 and 10 times "one millionth times the frequency." For 72 MHz, this would be a total error of 360 Hz (for each crystal) when the tolerance is 5 ppm for each; total frequency error can be as much as 720 Hz in that case.
It will be easily seen that, since tolerance is expressed in ppm, the real (absolute) error at 72 MHz is about twice as great as the absolute error one sees at 35 MHz, with the same crystal specs.
RECOMMENDATIONS:
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do not change receiver crystals other than with "own brand" type
- do not change transmitter crystals at all unless you have access to precision lab equipment which lets you set the proper shift points, or you may experience loss of range
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