The Desing Of a Bladder-fed Pressurized Fuel System for Free Flight by Tandy C. Walker
Nota publicada en
Free Flight Quarterly
Nº 12 de Julio de 2004
Free Flight Quarterly
Nº 12 de Julio de 2004
COSQUÍN 68 - 1/2 A de José Caronti. Argentina. 1968.
Este es otro famoso modelo Argentino,múltiple Campeón Nacional en la antigua categoria 1/2 A.
El plano original que se publica en la parte superior, fue dibujado por el centro técnico de FAA que funcionaba en la ciudad de Córdoba, en Mayo de 1971
En las fotos se puede apreciar una versión del modelo,
motorizado por un motor AME - AP .061(1Cm3)
motorizado por un motor AME - AP .061(1Cm3)
SAN DE HOGAN de Dennis Davis. USA. 1949
Plano enviado por Darío y Marcos Salomone del Club Aeromodelista RosarioPublicado en Air Trails en Noviembre de 1949
Este es el cuarto "Hogan" publicado en este espacio y
probablemente el primero en ser
diseñado por Dennis Davis para Berkeley Models
Ver SANDY HOGAN 70".
Ver MINI HOGAN 45",
y SANDY HOGAN de Roberto Zapatta de Italia
Fotografias del modelo de Dario Salomone
VIKING de Carl Goldberg - 2011 One Desing Event - NFFS
Plano publicado en la revista Model Airplane News en Junio 1963"2011 Carl Goldberg Viking 1/2A
Nostalgia rules. Any Nostalgia legal engine plus TD 049-051 allowed. The reduced form model design will be made available in the late summer of 2008 as a full sized plan. A kit will be available from BMJR. Plans for the full sized Viking are available from NFFS Plans Service for $8.00 (plan number 433)"
Foto del Foro de la NFFS de E.E. U.U.
One Desing Event Models
1998- 1/2 A Geef
1999- Honey-B 275
2000- 1/2 A Zeek
2001- Spacerod
2002- 1/2 A T-Bird
2003- Starduster X
2004- Zero
2005- Fubar
2006- Mini-Pearl
2007 Bounty Hunter
2008 Ramrod
2009 Spacer
2010
Country Boy 1/2A by Jim Clem. Nostalgia Rules. Any Nostalgia legal engine plus TD .049-051. Plans available from NFFS Plans Service for $8.00. Order plan number 341. Kits are also available from BMJR.
2011Carl Goldberg Viking 1/2A (in approved reduced form or in original form from the Goldberg kit). Nostalgia rules. Any Nostalgia legal engine plus TD 049-051 allowed.
The reduced form model design will be made available in the late summer of 2008 as a full sized plan. A kit will be available from BMJR.
Plans for the full sized Viking are available from NFFS Plans Service for $8.00
(plan number 433)
The reduced form model design will be made available in the late summer of 2008 as a full sized plan. A kit will be available from BMJR.
Plans for the full sized Viking are available from NFFS Plans Service for $8.00
(plan number 433)
2012
Dan Sobala's AB Geef (513 sq. in. wing). Nostalgia legal engines of any size. Nostalgia rules apply. Full sized plans are available from NFFS Plans Service for $8.00. Ask for plan number 177 (This model may also be flown in Vintage FAI with an appropriate .15 sized engine). BMJR is planning to kit this model.
2013
1/2A Satellite of any size up to 330 sq. in. wing. Model must have been either published or kitted in the form you decide to build and fly. May be powered.by any Nostagia legal 1/2A engine or TD .049/051. Nostalgia rules apply.
2014
Midwest Fortastop early Nostalgia model. Flown to Nostalgia rules with only specified early Nostalgia engines permitted. Plans available from NFFS Plans Service for $7.00, order plan number 255. Campbell's Custom Kits has kits for this model available.
JIM WALKER - American Junior Classics
Aunque este espacio es dedicado específicamente al Vuelo Libre,
le sugiero que disfrute de una lección de historia del aeromodelismo.
le sugiero que disfrute de una lección de historia del aeromodelismo.
Esta pagina que hoy les presento relata la historia de un hombre visionario, una persona que desde los 12 años (alrededor de 1916) comenzó con su fascinación por los modelos de aviones
Se trata de Jim Walker, el hombre que invento el sistema U-Reely hand control (UControl) y que fundo la empresa que hizo popular en todo el mundo esta modalidad del Aeromodelismo. 
Click sobre la imagen para visitar la pagina web
Comics de la revista Flying Models del mes de Mayo del Año 1954, publicados en el sitio web Home of Jim Walker & The American Junior Aircraft Company
IsiPlot 1.2 Full
IsiPlot es un programa que nos permite imprimir imagenes en escala, es la heramienta perfecta para imprimir los planos publicados aquí. admite formatos raster (jpg, png, gif, etc) e incluso dfx, el formato de autocad.
El modo de utilizar el programa es muy sencillo, cargamos el plano en el programa y procedemos a calibrar el dibujo, para ello en la esquina superior derecha pinchamos la regla, nos vamos al dibujo y pinchamos en un extremo de una línea de la cual conocemos su medida, pulsamos en el otro extremo y se abre una ventana donde introducimos la medida, lo podemos hacer en pulgadas o en centímetros.Ahora pulsamos sobre la escala para indicarle al programa si queremos imprimir a 1:1 u otra selección, entonces el software lo que hace es, teniendo en cuenta el tamaño real de las piezas dibujadas, distribuye el plano en hojas DIN A-4 para su impresión y después montaje, las hojas a imprimir también las podemos configurar, con margen, sin margen, imprimir todas o solo unas determinadas y el IsiPlot imprimirá unas marcas para facilitarnos el montaje.
Aerodinámica para aeromodelos. Primera parte
Notas restauradas,publicadas originalmente en la Revista
AEROMODELISMO Nros. 11 y 12
ZEEK de Lew Mahieu. USA. 1952
Un hermoso modelo del Estadounidense Lew Mahieu, publicado en la revista Argentina AEROMODELISMO a comienzos de la década de 1950.
El Plano y la nota original con los comentarios del autor fueron restaurados digitalmente.
Kit del Modelo
1,4 mtrs. de ala, costillas de ala y elevador, cuadernas del fuselaje, timón,
cabana en terciado a modo de matriz, marginales y fuga del elevador
fuga y marginales de ala $ 200 ( 53 U$S Dollars aprox.)
1,4 mtrs. de ala, costillas de ala y elevador, cuadernas del fuselaje, timón,
cabana en terciado a modo de matriz, marginales y fuga del elevador
fuga y marginales de ala $ 200 ( 53 U$S Dollars aprox.)
Cuatro ZEEKs para las distintas categorías de la clase Nostalgia Gas en EE.UU.
OLIMPIC de Renato Mc Berkeley. Italia 1949
Publicado en la revista Italiana Modellismo Nº 22 de Enero de 1949
20.000 Visitas en un Año
Mirando el mapa nuevamente, recuerdo que hace tres meses escribí una nota sobre las primeras 10.000 Visitas, no imagine entonces que 10.000 visitas mas tarde aún seguiría tratando de adivinar los motivos de las personas que han echo de este archivo online de Aeromodelismo, uno de los mas consultados.
Mientras imagino a personas desconocidas en lugares distantes, me atrevo a pensar que las 20.000 visitas que recibio este sitio en su primer año online, confirman de echo que el interés apasionado por lo modelos de avión, es mucho mas que un pasatiempo comercial o un capricho excéntrico
Si usted todavia no es aeromodelista, recuerde (sobretodo si usted no vive en Bagdad o Puerto Príncipe) que siempre está a tiempo de ponerse unas alas, con intentar no pierde nada…construya un modelo, alguno de los mas de 600 publicados aquí, vaya al campo con su maquina de volar y déjela escapar, solo por jugar a encontrar eso que anda buscando mirando el cielo mientras amanece.
Solo me resta recordarle a usted amigo aeromodelista, que puede colaborar enviando material, comentarios y notas técnicas o de opinión, que serán de incalculable interés para todos.
Click Aquí
Muchas gracias por su visita
Muchas gracias por Volar Libremente
Tabla de Equivalencias - Fracciones y Decimal de Pulgada = Milímetros
Muchas veces durante el proceso de interpretación de un plano,nos encontramos con medidas que nos son poco familiares ya que el sistema utilizado no corresponde con el sistema de medida adoptado habitualmente en nuestra región del mundo
Para esos casos yo utilizo está tabla, una herramienta simple
que usted puede imprimir y utilizar en la mesa de diseño
PROFI .049 y .061
"... The new Profi 1cc (.061) has been a big hit. Performance is a huge surprise with significantly better numbers than the competition and 3000 up on the .049 (34,300 rpm) when using the same prop. Appearance and weight is the same as the .049..."
Nuevo Motor PROFI 0.61 Cu.In.
"... The latest version of the .8cc (.049) is here.
Testing in the US shows highest RPM of any .049 to date!
This one is also turning Free Flight size prop at 31,300 rpm.
This engine is running 3000 higher than the competition on the same prop.
But it turns the full bladed props so Free Flight guys are going to be going higher than ever..."
Testing in the US shows highest RPM of any .049 to date!
This one is also turning Free Flight size prop at 31,300 rpm.
This engine is running 3000 higher than the competition on the same prop.
But it turns the full bladed props so Free Flight guys are going to be going higher than ever..."
Price for the .049 is currently $145.00 plus $5.00 shipping.
The 1cc price is $155.00 plus $5.00 shipping.
Now Turbo plug heads are shipped with these engines as well as the Nelson plug head. It makes for a better looking combustion chamber than the standard Nelson plug setup however performance difference seems nil.
Turbo plugs are available at $5.00 each. The turbo plug is going to give everyone many more heat ranges for the different nitro percentages used in FF, CL and RC.
Turbo Plug
The technology of glo
w plugs escapes most of us. Sure, we all know that our nitro engines need them to start and to run, but beyond that, we don't know much. Glow plugs are, in fact, a critical part of the whole performance picture.
A glow plug is the ignition system for your nitro-powered vehicle. Instead of a spark-ignition system such as those found in models airplanes engines, the remarkably simple glow plug is what we use to ignite the fuel in our engines. It doesn't have a single moving part or adjustment; its only functioning component is a simple, stationary coil of wire.
A la derecha una clasica bujia K&B
de los años 50´s
HOW DOES IT WORK?
Starting an engine is one of the functions of a glow plug. When a glow igniter is attached to a glow plug, it causes the glow plug's coil to "glow" white-hot. This ignites the air/fuel mixture in the cylinder when the engine is started. Once the engine is running, the heat generated during compression and combustion keeps the glow plug's element hot enough to continue igniting the fuel mixture on its own without the help of an external power source. In the simplest terms possible, that's how a glow plug works.
WHAT IS A TURBO PLUG?
OK; you've blown the glow plug that was included with your engine, so it's time to get a new one. Which one do you buy? You could try to find the same plug, if information about its brand and type was included with your engine. More likely, you will have to choose from the brands and types of plugs that are available at your local hobby shop.
What makes the subject of choosing a glow plug a little confusing is the variety of types that are available. Each manufacturer offers a range of plugs, from as few as three or four up to 10 or more. A plug is usually identified by a code that indicates its effective operating temperature; not the operating temperature of the engine or the outside air, but the relative temperature of the glow plug's coil. Each manufacturer has its own unique temperature-rating system, and general application recommendations are sometimes included to try to steer consumers toward the correct plugs for their needs.
The process can be confusing, however, because a universal rating system does not exist for glow plugs. For example, an O.S. R5 plug is not the same as a McCoy MC-9, although both are considered "cold" plugs. A glow-plug manufacturer's guidelines will suffice for average enthusiasts who simply want their boats to run; racers and performance buffs, however, won't get the most out of their engines without a little experimentation. So what should you look for in a replacement plug?
Some general rules about plugs are determined by the size of the engine and the type of fuel used. Smaller engines usually require hotter plugs, while larger engines favor cooler plugs. Engines that run fuel containing a high percentage of nitro favor the cooler plugs as well, while those that run on less nitro prefer hotter plugs (nitro fuels for car engines typically include 10 to 40 percent nitromethane). For example, a small, .12ci (2.1cc) engine that burns highnitro fuel would favor a warm plug in a mid-range temperature (small engine = hotter plug; high-nitro fuel = colder plug). The same plug might also be suitable for a .21ci (3.5cc) engine running low-nitro fuel (large engine = colder plug; lownitro fuel = hotter plug).
A la Izquierda
primer plano de una bujia turbo
The size of your engine and the ty
pe of fuel are easy enough to determine, so these guidelines should get you pointed in the right direction. For racing buffs who want to get maximum ponies, however, another element that's not easily determined-yet should be taken into consideration-is compression ratio. The compression ratio of an engine will also be a factor in choosing the proper plug. High-compression engines favor colder plugs, while those with lower compression favor hotter plugs. Engine manufacturers rarely disclose an engine's compression ratio, so it may be difficult to use this information to select plugs unless you know how to calculate compression or can measure it with a compression gauge.
Note: turbo plug only fit heads designed for this type of plug.
w plugs escapes most of us. Sure, we all know that our nitro engines need them to start and to run, but beyond that, we don't know much. Glow plugs are, in fact, a critical part of the whole performance picture.A glow plug is the ignition system for your nitro-powered vehicle. Instead of a spark-ignition system such as those found in models airplanes engines, the remarkably simple glow plug is what we use to ignite the fuel in our engines. It doesn't have a single moving part or adjustment; its only functioning component is a simple, stationary coil of wire.
A la derecha una clasica bujia K&B
de los años 50´s
A la izquierda una moderna bujia
convencional
HOW DOES IT WORK?
Starting an engine is one of the functions of a glow plug. When a glow igniter is attached to a glow plug, it causes the glow plug's coil to "glow" white-hot. This ignites the air/fuel mixture in the cylinder when the engine is started. Once the engine is running, the heat generated during compression and combustion keeps the glow plug's element hot enough to continue igniting the fuel mixture on its own without the help of an external power source. In the simplest terms possible, that's how a glow plug works.
WHAT IS A TURBO PLUG?
Glow plugs are available in two configurations: standard and turbo. Most engines come with a standard plug. They feature a straight, threaded housing that threads through the cylinder head into the combustion chamber. Turbo plugs feature a different type of housing; the end that goes into the combustion chamber is tapered. The tapered end mates with a head that is specially designed for use with turbo plugs. The head is also tapered to accept this type of plug. The supposed advantages are less compression leakage around the glow plug and less disruption of the combustion chamber. The hole in the cylinder head that exposes the glow plug to the air/fuel mixture in the cylinder is much smaller, and there are fewer rough edges to create unwanted hot spots.
A la derecha un ejemplo
de una bujia turbo
WHICH TYPE OF GLOW PLUG SHOULD I USE?de una bujia turbo
OK; you've blown the glow plug that was included with your engine, so it's time to get a new one. Which one do you buy? You could try to find the same plug, if information about its brand and type was included with your engine. More likely, you will have to choose from the brands and types of plugs that are available at your local hobby shop.
What makes the subject of choosing a glow plug a little confusing is the variety of types that are available. Each manufacturer offers a range of plugs, from as few as three or four up to 10 or more. A plug is usually identified by a code that indicates its effective operating temperature; not the operating temperature of the engine or the outside air, but the relative temperature of the glow plug's coil. Each manufacturer has its own unique temperature-rating system, and general application recommendations are sometimes included to try to steer consumers toward the correct plugs for their needs.
The process can be confusing, however, because a universal rating system does not exist for glow plugs. For example, an O.S. R5 plug is not the same as a McCoy MC-9, although both are considered "cold" plugs. A glow-plug manufacturer's guidelines will suffice for average enthusiasts who simply want their boats to run; racers and performance buffs, however, won't get the most out of their engines without a little experimentation. So what should you look for in a replacement plug?
Some general rules about plugs are determined by the size of the engine and the type of fuel used. Smaller engines usually require hotter plugs, while larger engines favor cooler plugs. Engines that run fuel containing a high percentage of nitro favor the cooler plugs as well, while those that run on less nitro prefer hotter plugs (nitro fuels for car engines typically include 10 to 40 percent nitromethane). For example, a small, .12ci (2.1cc) engine that burns highnitro fuel would favor a warm plug in a mid-range temperature (small engine = hotter plug; high-nitro fuel = colder plug). The same plug might also be suitable for a .21ci (3.5cc) engine running low-nitro fuel (large engine = colder plug; lownitro fuel = hotter plug).
A la Izquierda
primer plano de una bujia turbo
The size of your engine and the ty
pe of fuel are easy enough to determine, so these guidelines should get you pointed in the right direction. For racing buffs who want to get maximum ponies, however, another element that's not easily determined-yet should be taken into consideration-is compression ratio. The compression ratio of an engine will also be a factor in choosing the proper plug. High-compression engines favor colder plugs, while those with lower compression favor hotter plugs. Engine manufacturers rarely disclose an engine's compression ratio, so it may be difficult to use this information to select plugs unless you know how to calculate compression or can measure it with a compression gauge.Note: turbo plug only fit heads designed for this type of plug.
THE FLYING ACES STICK de Bill Effinger & Thracey Petride. USA. 1936
Publicado en Flying Aces en Septiembre de 1936
El Favorito de Volar Libremente en la categoria Guardia Vieja
Por su diseño vanguardista, sus hermosas líneas y su relativa sencillez constructiva.y por constituir un hermoso ejemplo de los modelos Británicos
de principios de los años 50`s , este modelo es EL FAVORITO del año
El CREEP de Brian Eggleston es sin duda un gran competidor
para la categoría Guardia Vieja Motor
(Nostalgia Gas Argentina)
PIPPIRIKI de Reeves
Publicado en Australian Model HobbiesProj Span inch 60.00
Dev Span inch 57.00
Chord inch 8.00
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