Vuelven los clásicos AME – BIG MIG de NV Rusia
15 miércoles Jun 2011
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in15 miércoles Jun 2011
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in19 viernes Nov 2010
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in13 martes Jul 2010
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inIt’s a dual bank, 14 cylinder «freestyle» engine build by Dennis Fadden of Vancouver, BC.
It’s based on Vernal Engineering (Bruce Satra) M5 cylinders and rockers;
probably distributors as well. That would make it 2.576 cuin.
17 jueves Dic 2009
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inNow 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.
16 miércoles Dic 2009
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inThe technology of glow 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?
WHICH TYPE OF GLOW PLUG SHOULD I USE?
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 type 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.
24 jueves Sep 2009
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in24 jueves Sep 2009
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in22 martes Sep 2009
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in05 miércoles Ago 2009
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inEl hecho de ver competir de igual a igual a modelos de 1.20 mts. contra modelos de 2 metros y motores cyclon es un espectáculo increíble
Como ustedes saben las diferentes motorizaciones en esta categoría tienen relación directa con el alargamiento alar de los modelos y expresan un grado de especialización que se ajusta necesariamente a la relación peso potencia de los motores, y a la utilización o no, de materiales compuestos y sistemas de 4 o mas funciones. El peso del motor se transforma en un factor importante en la adaptación de los diseños clásicos construidos mayoritariamente en madera para motores COX, asi como también en el diseño general de modelos nuevos de costo medio o bajo pero competitivos a fin de cuentas.
Todos estos motores fueron descriptos en diferentes notas de la sección Motor
Fotos del nacional argentino 2009 Ignacio Nobile
05 miércoles Ago 2009
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