R/C Hints & Articles
|The Care & Feeding Of Four Stroke Model Aircraft Engines|
|Aluminum Spinner & Gear Polish|
|Model Cleaning At The Field|
|MonoKote Over SuperCoverite Covering Technique|
|The Famous "C.A.T." Check|
|Polishing MonoKote & Epoxy Surfaces|
|Lead Shot Weight Bags|
|Decal & Sticker Removal|
|Fuel Drop Spots In Your Car|
|Slipping Props & Backplates|
|Using the Preval System|
|Servo Mounting Screws|
|Building v. Rebuilding|
|Tail Brace Wires|
ALUMINUM SPINNER & GEAR POLISHFor a great shine that won’t be bothered by fingerprints, try a polishing paste called “SIMICHROME POLISH”. Happich manufactures it in Germany, and it can be purchased at most motorcycle shops.
This aluminum polish comes in a small (and pricey) yellow tube, but goes a long way. Great for your spinners as well as landing gear. Use a soft rag, then wash in soapy water and dry.
MODEL CLEANING AT THE FIELDI’ve tried everything that came along, including a lot of home brew mixtures to clean up my models after a day of flying. Nothing really seemed to work. Then I discovered “‘SIMPLE GREEN” – an all around general purpose spray cleaner available at Home Depot and most large grocery chains.
Dilute it with water according to the directions; 10-to-1 for our purpose. Spray it on and use those soft, non-scratchy, blue “Shop Towels on a Roll” manufactured by Scott. Also from Home Depot.
SLIPPING PROPS &
I’ve noticed at the field that some of the guys have problems
throwing props. It appears to happen more often when they use a
combination of a wood or nylon prop with a plastic spinner whose backplate
doesn’t have the ‘bite’ that the better spinners such as Tru-Turn
FUEL DROP SPOTS IN YOUR CAR
We all have seen it – those tell-tale spots that came from our
engines or mufflers dripping fuel or perhaps after-run oil (I hope it was Marvel
Air Tool Oil J)
on the way back home from a day’s flying.
DECAL & STICKER REMOVAL
Have you ever driven yourself nuts trying to get a price sticker
off something you purchased? Ever try to remove an old vinyl or paper
decal off your model? A neat
product called “GOO-GONE” really works well, and being citrus based,
smells good at the same time J
MONOKOTE & EPOXY SURFACES
I think I have the found the easiest way to really polish up those
MonoKote surfaces so that they are truly streak-free. This also works well
on painted surfaces.
MODEL CLEANING AT THE FIELD
I’ve tried everything that
came along, including a lot of home brew mixtures to clean up my models
after a day of flying. Nothing really seemed to work. Then I discovered
“‘SIMPLE GREEN” – an all around general purpose spray cleaner
available at Home Depot and most large grocery chains.
TOUCH UP PAINT SPRAYER
So many times we need to spray paint only a part of our models, such as a cowling or wheel pants, but the colors we need or the type paint we want to use are not available in a spray can. Yet, we find it a major task to drag out the big compressor and the spray gun. There is a simple, inexpensive, and effective solution: Use the “Preval” Spray gun. It is a small aerosol powered spray gun attached to a 6 ounce glass jar. The spray gun unit is sold as Preval part #267 and costs about $7; replacement power units, part #268, cost about $3. You can find these at auto paint and body supply stores. “Let your fingers do the walking.”(http://www.prevalspraygun.com/)
Simply mix your paint in the supplied jar and spray as you would using a can. When done, insert the pick up nozzle in some solvent and spray clean.
While you’re at the auto paint supply place, do yourself a favor and get some 3M sandpaper and some 3M Fine-Line tape.
SERVO MOUNTING SCREWS
The greatest thing since peanut butter? Well, not quite, but these new servo mounting screws sure make your life easier!
Why? They are #2 x 9/16” Socket Head Washer Screws! That's right, socket head with integral washers. You can use your ball drivers.
Available from “Micro Fasteners” http://microfasteners.com
To each his own, but this works for me! I prefer to install my hinges during assembly, but I don’t glue them.
I make my hinge slots where appropriate, insert the hinges, and, if necessary (such as when using quarter-scale pinned hinges) tack glue 1/16th or 1/20th balsa spacers.
Now go ahead and build your wing or tail feathers, including the sheeting. Do all your sanding, and then finally carefully cut along your hinge line and take the parts apart. Oh yes, hopefully you marked the location of the hinges and the hinge line on your plans as you went along so that you know where to cut!
The last step is to do any necessary beveling before you cover. After covering, slice open the slots and epoxy your hinges as always knowing the flying surfaces will be in perfect alignment with the control surfaces.
ATTACHING TAIL BRACE WIRES
No need for you to insert hardwood or ply inserts in your stabs or fins for brace wire attachment points.
During construction, in a convenient location of hard balsa, drill a 1/8” hole, then insert and CA a piece of 1/8” o.d. aluminum tubing. The tubing is easily sanded flush to the surface.
When ready, attach the brace wire fittings using a 2-56 bolt which fits the tube perfectly. If your stab or fin is thicker than 3/4”, use 2-56 threaded rod cut to size with a nut on both ends.
Be sure to use Loctite!
Please don’t use “Armour All” as an additive to your fuel in an effort to reduce foaming!
Noted engine guru C. F. Lee in an 11/99 article in R C Modeler repeats his warning that “-- Armour All contains silicone which will eventually form a glass coating on the glow plug element-– first showing up as idle/acceleration problems.” He also points out that most modern fuels already contain anti-foaming agents.
As for me, I always use 1/2” thick latex foam all around my tanks- - including the front.
Quite often when we hang a big gas-burner on our favorite model, it comes out nose heavy. Most likely, we didn’t check the C.G before covering, so now we’re faced with cutting a hole back near the tail for the addition of ballast.
Why not plan ahead? During construction, build a small ballast box as far aft as we can; use 3/32” balsa sheet for the top, ends, and sides. Frame it on the bottom with 1/4” square balsa. Now cover the fuselage a usual.
If ballast is needed, simple cut the MonoKote open, epoxy the lead in place, and recover the small access hole.
LYMAN SLACK HOMEPAGE
Contact Lyman Slack