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TIPS & TRICKS SEND IN YOUR IDEAS- (Mode/A/rp/arte News will give a free, one-year subscription (or one-year renewal, if you already subscribe) for each idea used in "Tips & Tricks." Send a rough sketch to Model Airplane News, 100 East Ridge, Ridgefield, CT 06877 4606 USA. BE SURE YOUR NAME AND ADDRESS ARE CLEARLY PRINTED ON EACH SKETCH, PHOTO AND NOTE YOU SUBMIT. Because of the number of ideas we receive, we can't acknowledge each one, nor can we return unused material. MIRRORING SERVOS Split elevators can cause problems if you connect two servos through a Y-harness. Servos of the same brand rotate in the same direction, and this can result in differing geometry between sides. This, in turn, produces unequal force and controlsurface reaction. An easy way to avoid this is to use comparable servos from different brands that rotate in opposite directions. Of course, the servos should have roughly the same speed and torque characteristics, but most standard servos are enough alike to work. Thomas Smith, Aberdeen, MD 18 MODEL AIRPLANE NEWS Cut to 1/4" SPOTLESS FUEL TANKS A dirty fuel tank can lead to less than immaculate performance and reliability, but it can be a chore to get a cleaning tool inside a tank. To make that easier, trim the bristles of a 6-inch acid brush to about 1/4 inch. Bend the brush tip to approximately 45 degrees to create your own tank scrubber. Pour an ounce or two of alcohol into the tank, swish it around, and let it sit for 15 minutes. Then, use your scrubber to clean the residue from inside the tank. If you need a sharper angle to reach a corner, bend the brush tip more. For really stubborn spots, cut the bristles slightly shorter to get more scrubbing action. William Pote, Hobe Sound, FL KEEP YOUR COOL With electric power growing by leaps and bounds, here's a simple cooler box that you can build to get more flight time and take better care of your batteries. Cut a piece of 1/4-inch foamboard into two pairs of matching sides to make four sides of a box. Epoxy the box together, but leave two opposite ends open. At one end, insert a 12V fan from RadioShack (item no. RS 273 243B; $10). Place your charger on top of the cooler box (secure it with rubber bands, if desired) and connect the leads from the fan and the charger to a 12V source. Then, place your pack in the open end of the box to cool it down before and during charging. This way, you won't abuse your packs by charging them while they're still hot, and you won't have to wait as long before recharging. Jack Hillyer, Seattle, WA GRAB-MAGNET FOR SMALL PARTS Little parts such as screws, pins, etc. can be difficult to retrieve one at a time from containers, and if you fish around with your fingers, you sometimes find the sharp end first—ouch! Next time, cut a strip from a flexible refrigerator magnet to fit into the container. The magnet will collect the parts from the bottom of the container, thereby making it easy for you to retrieve whichever part you need quickly and easily. Kenneth Kent, Florence, OR
TIPS & TRICKS RACK 'EM! Unless you're wealthy enough to add a new wing onto your house to serve as a 1/4-scale hangar, chances are that you have to store your models in a limited area. A great way to make the most of the space you have is to build a hanging rack out of 1/2-inch PVC pipe. You'll need about 4 feet of tube, four 90-degree elbows and two 45-degree elbows. Cut the tube into seven pieces: a top crosspiece, two medium-length diagonal extensions, two short vertical extensions and two long longitudinal extensions—exact lengths will vary, depending on the size of your airplane. At the midpoint of the crosspiece, drill a 3/16-inch hole to fit a 2-inch deck screw, from which you will hang the rack. When all the angles are squared, glue the pipe together, and just like that, you'll have a multipurpose plane rack for BULLETPROOF YOUR PLANE Kevlar weave is one of the strongest materials around; it's no coincidence that it is the prime ingredient in airbags and police body-armor. Ounce for ounce, it's much stronger than fiberglass, and as such, it's great for laminating into an airplane to reinforce high-stress areas such as firewalls, wing supports and landing-gear mounts. An inexpensive source for Kevlar is an auto junkyard; deflated airbags are easily found in late-model wrecks. Donald Stach, Madeira Beach, FL less than $2 in parts. Jim Haslouer, Merced, CA 90° PVC elbow 45° PVC elbow " PVC pipe SAWDUST-FREE WORKSHOP Here's a neat way to keep sawdust under control in your workshop. Take a standard box fan with a rectangular shroud and duct-tape a filter element from a forced-air heater/air conditioner onto the intake side of the fan. These filters are available in various sizes and can be found at hardware and home-improvement stores; they can be trimmed to fit, if necessary. Be sure to seal the edges well with the duct tape. When you turn on the fan, the intake air will be drawn through the filter. If you position the intake side near you as you sand, the sawdust will collect in the filter instead of all over your workshop (and you). Jimmy Bruns, Yucca Valley, CA ALL-TEMPERATURE PUSHRODS The plastic pushrods that are included in many kits can stretch or contract, depending on the temperature. This can throw off your trim settings and put extra stress on parts. A good way to avoid this problem is to run a length of wire through the center of the plastic-tubing pushrods. You can solder the clevises to the wire, which makes a stronger joint. More important, the wire will not be affected by temperature changes. The plastic pushrods now serve as support for the wires. 20 MODEL AIRPLANE NEWS James McCoul, Sterling Heights, Ml
- Page 1 and 2: Tinisn Tor EASIER TO FLY! USA $4.99
- Page 3 and 4: EDITORIAL BY DEBRA SHARP Small plan
- Page 5 and 6: percent of MAC aft of the upper-win
- Page 7 and 8: HOBBICO FLYZDNE WARBIRDS Improvisin
- Page 9: Voyager 50 CCPM 30 and Nem Heli Eng
- Page 13 and 14: Multi-Temp Thermal it's back for go
- Page 15 and 16: PILOT PROJECTS Col. Austin Ayotte,
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- Page 20 and 21: 1 /2A TO Z Cox sells this Engine St
- Page 22 and 23: 1 /2A TD Z 32 MODEL AIRPLANE NEWS H
- Page 24: 1 /2A TD Z Herr Engineering Aqua St
- Page 27 and 28: Marc Frohm of Germany built this am
- Page 29 and 30: FLORIDA JETS This giant sport jet w
- Page 32 and 33: Sig Mfg. Somethin' Extra ARF he Som
- Page 34: SIG MFG. SDMETHIN' EXTRA The Someth
- Page 37 and 38: LJ o Li. Li EL h I set the elevator
- Page 39 and 40: COMPANY PORTLAND OREGON THE GLIDERS
- Page 41 and 42: KIT FEATURES The Aresti 40 is well
- Page 43 and 44: HANGAR 9 ARESTI 4D properly positio
- Page 45 and 46: eceiver, but you won't be able to u
- Page 47 and 48: 33% & 39% Extra 330L 3i%& 37% Extra
- Page 49 and 50: Glass cloth will not take to sharp
- Page 51 and 52: FMA Direct CO-PHot by Gerry Yarrish
- Page 53 and 54: FMA DIRECT CD-PILDT on a scale of f
- Page 55 and 56: Assemble ABS Cowls and Wheel Pants
- Page 57 and 58: HDW TD ASSEMBLE ABS COWLS AND WHEEL
- Page 59 and 60: Even a big old pelican can be model
TIPS & TRICKS<br />
RACK 'EM!<br />
Unless you're wealthy enough to add a new wing onto your house to serve<br />
as a 1/4-scale hangar, chances are that you have to store your models in a<br />
limited area. A great way to make the most of the space you have is to<br />
build a hanging rack out of 1/2-inch PVC pipe. You'll need about 4 feet<br />
of tube, four 90-degree elbows and two 45-degree elbows. Cut the<br />
tube into seven pieces: a top crosspiece, two medium-length diagonal<br />
extensions, two short vertical extensions and two long longitudinal<br />
extensions—exact lengths will vary, depending on the size of your airplane.<br />
At the midpoint of the crosspiece, drill a 3/16-inch hole to fit<br />
a 2-inch deck screw, from which you will hang the rack.<br />
When all the angles are squared, glue the pipe together,<br />
and just like that, you'll have a multipurpose plane rack for<br />
BULLETPROOF YOUR PLANE<br />
Kevlar weave is one of the strongest materials<br />
around; it's no coincidence that it is the prime<br />
ingredient in airbags and police body-armor. Ounce<br />
for ounce, it's much stronger than fiberglass, and as<br />
such, it's great for laminating into an airplane to<br />
reinforce high-stress areas such as firewalls, wing<br />
supports and landing-gear mounts. An inexpensive<br />
source for Kevlar is an auto junkyard; deflated<br />
airbags are easily found in late-model wrecks.<br />
Donald Stach, Madeira Beach, FL<br />
less than $2 in parts.<br />
Jim Haslouer, Merced, CA<br />
90° PVC elbow<br />
45° PVC elbow<br />
" PVC pipe<br />
SAWDUST-FREE WORKSHOP<br />
Here's a neat way to keep sawdust under control in your workshop.<br />
Take a standard box fan with a rectangular shroud and duct-tape a<br />
filter element from a forced-air heater/air conditioner onto the<br />
intake side of the fan. These filters are available in various sizes<br />
and can be found at hardware and home-improvement stores; they<br />
can be trimmed to fit, if necessary. Be sure to seal the edges well<br />
with the duct tape. When you turn on the fan, the intake air<br />
will be drawn through the filter. If you position<br />
the intake side near you as you<br />
sand, the sawdust will collect in<br />
the filter instead of all over your<br />
workshop (and you).<br />
Jimmy Bruns, Yucca Valley, CA<br />
ALL-TEMPERATURE PUSHRODS<br />
The plastic pushrods that are included in many kits can stretch or contract, depending on the temperature. This can throw off your trim settings and put<br />
extra stress on parts. A good way to avoid this problem is to run a length of wire through the center of the plastic-tubing pushrods. You can solder the clevises<br />
to the wire, which makes a stronger joint. More important, the wire will not be affected by temperature changes. The plastic pushrods now serve as<br />
support for the wires.<br />
20 MODEL AIRPLANE NEWS<br />
James McCoul, Sterling Heights, Ml
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