Revista Rc Boat Modeler - Download Free

Recebi um email apresentando esta revista.
Se vc tem interesse em conhecer
é só linkar aqui.

Bufão, dá um tempo...

Se vc comtinuar zoando o blog, eu vou te excluir.
Eu nunca me importei que vc (ou qualquer outra pessoa)faça propaganda dos seus produtos, mas detonar o blog eu não vou permitir.

Daniel Katzav - Vision 50 Competition

O comentário abaixo e uma reprodução de um post no RunRyder.

""Hey Guys,

Here is my last video with my Vision competition 50.

this viddeo was taken in a fun fly that made in memorial to Stav Golan.""

Druprra dinamika...

O cara da Jersey modeler ( Dean) gente fina, compramos 01 galão com com bomba e tudo, ele nos mandou outro gratis...

Para o Thomé ficar feliz...

October 20, 2009 If you own a DX6i transmitter that has Product Identification Codes (PIDs) HA906X and HA907X, then please read the following advisory. Product Identification (PID) code may be found on the inside of the battery compartment of the DX6i transmitter. PID within the battery compartment    PID on the DX6i box (beneath the UPC) Our service centers in the US, UK, and Germany have received several reports of short circuits occurring in the DX6i, melting some interior components. The cause for this issue is an incorrect trainer jack used in the assembly. Use of these incorrect trainer jacks by either a buddy cable or a flight simulator cable can create a short circuit, causing energy from batteries to be released in the form of heat inside the transmitter, melting interior components and generating smoke. Our investigation shows that only a small percentage of the transmitters are affected, and the situation has now been corrected at the factory, but all transmitters with these two PIDs should be returned to Horizon for inspection and, if needed, repair. Even if you do not currently use or plan to use your trainer jack, please return the transmitter for inspection. Please complete the on-line request form here. For US and Canadian consumers, Horizon will pay for all ground shipping charges to and from our US service center. Customers outside the US and Canada should contact their retailer or local Spektrum distributor. Within Europe, please follow these links to our service centers in England or Germany. Australian consumers can follow this link. Any transmitters with PID other than HA906X or HA907X are not affected by this bulletin and do not need their trainer jacks inspected. If you have any questions, please call our Product Support group at 1-877-504-0233. We apologize for this inconvenience. While there is no evidence of any fire hazard associated with the melting, Horizon assumes no risk for any consumer failing to act upon this service advisory.

Novo Espeto Churrasqueira - By Marcus Andr...

O Marcus Andr.... prometeu que em nosso próximo churrasco na pista vai estar levando este espeto.

Ele diz que usou um sistema computacional integrado entre Microsot Windows 7 / PS3 / Xbox / Wii / CAD

para o desenvolvimento do mesmo.

É esperar para ver.......

CADÊ O R$ 1,00?

Eu, Bufão e Armindo....fomos comer no restaurante, e no final, a conta ficou
em R$ 30,00.

Fizemos o seguinte: Cada um deu R$ 10,00...
Eu: R$10,00
Bufão: R$ 10,00
Armindo: R$ 10,00

O garçom levou o dinheiro até o caixa e o dono do restaurante disse o
seguinte:

Esses três são clientes antigos do restaurante, então vou devolver
R$5,00 para eles! E entregou ao garçom cinco notas de R$ 1,00.

O garçom, muito esperto, fez o seguinte: pegou R$ 2,00 para ele e deu
R$1,00 para cada um de nós.

No final ficou assim:
Eu: R$ 10,00 (-R$1,00 que foi devolvido) = Eu gastei R$9,00.
Bufão: R$ 10,00 (-R$1,00 que foi devolvido) = Bufão gastou R$9,00.
Armindo:R$ 10,00 (-R$1,00 que foi devolvido) = Armindo gastou R$9,00.

Logo, se cada um de nós gastou R$ 9,00, o que nós três gastamos juntos
foi R$ 27,00. E se o garçom pegou R$2,00 para ele, temos:

Nós: R$ 27,00
Garçom: R$ 2,00
TOTAL: R$ 29,00

Pergunto: - Onde foi parar o outro R$ 1,00?

Coisa de Doido ( essa chinainbox nao para de lançar coisas...)

U$ 129.00 na Flying Hobby,

para quem gosta de escala......+ uma tralha....

"Tampinha" de antena do 2.4 GHz

Para os que estão desesperados por uma "tampinha" de antena do 2.4 GHz. Aliás, Alexandre e Rodrigo!!!!

http://aztechaero.goods.officelive.com/RadioAccesories.aspx

Se alguém for pedir algo desta loja, me avise!!!!

Tareq Alsaadi - 700N D++++ !!!!!!

Caramba !!!!

parece que tocou várias vezes na grama !!!

Vou tomar um Dramin para ver denovo.

Pushrod Measuring Tool II

 

http://www.infinity-hobby.com/main/product_info.php?products_id=5033&osCsid=78c55c933b5a9685629a70a2aec44474

desculpem a postagem anterior ( ficou muito monotona...)

An 74 aeronave com geometria baseada em efeito COANDA

Bem pessoal como adiciono este post a nosso blog por tratar-se de mais uma aeronave russa a qual utiliza-se de um efeito denominado efeito Coanda o qual relaciona-se a mecanica dos fluidos ( fato este que faz com que as turbinas sejam deslocadas para a frete do BA da asa). Fenomeno apresentado tambem nos sistemas de helicopteros NOTAR, em alguns cones de Cauda ( ex GlobmasterIII) etc...

Segue abaixo explicacao resumida do fenomeno

An early description of this phenomenon was provided by Thomas Young in a lecture given to the The Royal Society in 1800:
The lateral pressure which urges the flame of a candle towards the stream of air from a blowpipe is probably exactly similar to that pressure which eases the inflexion of a current of air near an obstacle. Mark the dimple which a slender stream of air makes on the surface of water. Bring a convex body into contact with the side of the stream and the place of the dimple will immediately show the current is deflected towards the body; and if the body be at liberty to move in every direction it will be urged towards the current. [2]
A hundred years later, Henri Coandă identified an application of the effect during experiments with his Coandă-1910 aircraft, which is the first aircraft to use a motorjet (an early type of jet engine). In 1934 he obtained a patent in France for a "Method and apparatus for deviation of a fluid into another fluid". What is today known as the Coandă effect was described as the "Deviation of a plan jet of a fluid that penetrates another fluid in the vicinity of a convex wall."
[edit] Causes
The Coandă effect is a result of entrainment of ambient fluid around the fluid jet. When a nearby wall does not allow the surrounding fluid to be pulled inwards towards the jet (i.e. to be entrained), the jet moves towards the wall instead. The fluid of the jet and the surrounding fluid should be essentially the same substance (a gas jet into a body of gas or a liquid jet into a body of liquid). In one application, a jet of air is blown over the upper surface of an airfoil, which can have a strong influence on the overall lift, especially at high angles of attack when the flow would otherwise separate (stall). See Blown flap.
[edit] Applications
The Coandă effect has important applications in various high-lift devices on aircraft, where air moving over the wing can be "bent down" towards the ground using flaps and a jet sheet blowing over the curved surface of the top of the wing. The bending of the flow results in its acceleration and as a result of Bernoulli's principle pressure is decreased; aerodynamic lift is increased. The flow from a high speed jet engine mounted in a pod over the wing produces enhanced lift by dramatically increasing the velocity gradient in the shear flow in the boundary layer. In this velocity gradient particles are blown away from the surface, thus lowering the pressure there. Closely following the work of Coandă on applications of his research, and in particular the work on his "Aerodina Lenticulară," [3] John Frost of Avro Canada also spent considerable time researching the effect, leading to a series of "inside out" hovercraft-like aircraft where the air exited in a ring around the outside of the aircraft and was directed by being "attached" to a flap-like ring.

The first Avrocar being readied at the Avro factory in 1958
This is as opposed to a traditional hovercraft design, in which the air is blown into a central area, the plenum, and directed down with the use of a fabric "skirt". Only one of Frost's designs was ever built, the Avrocar.
The VZ-9 AV Avrocar (often listed as VZ-9) was a Canadian vertical takeoff and landing (VTOL) aircraft developed by Avro Aircraft Ltd. as part of a secret U.S. military project carried out in the early years of the Cold War.[4] The Avrocar intended to exploit the Coandă effect to provide lift and thrust from a single "turborotor" blowing exhaust out the rim of the disk-shaped aircraft to provide anticipated VTOL-like performance. In the air, it would have resembled a flying saucer. Two prototypes were built as "proof-of-concept" test vehicles for a more advanced USAF fighter and also for a U.S. Army tactical combat aircraft requirement.[5]
The effect was also implemented during the U.S. Air Force's AMST project. Several aircraft, notably the Boeing YC-14 (the first modern type to exploit the effect), have been built to take advantage of this effect, by mounting turbofans on the top of wing to provide high-speed air even at low flying speeds, but to date only one aircraft has gone into production using this system to a major degree, the Antonov An-72 'Coaler'.

The C-17 Globemaster III uses the Coandă effect for a comfortable ride at low flying speeds
The McDonnell Douglas YC-15 and its successor, the Boeing C-17 Globemaster III, also employ the effect. The NOTAR helicopter replaces the conventional propeller tail rotor with a Coandă effect tail.
An important practical use of the Coandă effect is for inclined hydropower screens[6], which separate debris, fish, etc., otherwise in the input flow to the turbines. Due to the slope, the debris falls from the screens without mechanical clearing, and due to the wires of the screen optimizing the Coandă effect, the water flows though the screen to the penstocks leading the water to the turbines.
The Coandă effect is also used to make automotive windshield washers which function without moving parts and to create pneumatic logic circuits. [7]
The operation principle of oscillatory flowmeters also relies on the Coanda phenomenon. The incoming liquid enters a chamber that contains 2 "islands". Due to the Coanda effect the main stream splits up and goes under one of the islands. This flow then feeds itself back into the main stream making it split up again, but in the direction of the second isle. This process repeats itself as long as the liquid circulates the chamber, resulting in a self induced oscillation that is directly proportional to the velocity of the liquid and consequently the volume of substance flowing through the meter. A sensor picks up the frequency of this oscillations and transforms it into an analog signal yielding volume passing through. [8]
In air conditioning the Coandă effect is exploited to increase the throw of a ceiling mounted diffuser. Because the Coandă effect causes air discharged from the diffuser to "stick" to the ceiling, it travels farther before dropping for the same discharge velocity than it would if the diffuser was mounted in free air, without the neighbouring ceiling. Lower discharge velocity means lower noise levels and, in the case of variable air volume (VAV) air conditioning systems, permits greater turn-down ratios. Linear diffusers and slot diffusers that present a greater length of contact with the ceiling exhibit greater Coandă effect.
In cardiovascular medicine, the Coanda effect accounts for the separate streams of blood in the fetal right atrium[9]. It also explains why eccentric mitral regurgitation jets are attracted and dispersed along adjacent left atrial wall surfaces (so called "wall-hugging jets" as seen on echocardiographic color-doppler interrogation). This is clinically relevant because the visual area (and thus severity) of these eccentric wall-hugging jets is often underestimated compared to the more readily apparent central jets. In these cases, volumetric methods such as the proximal isovelocity surface area (PISA) method are preferred to quantify the severity of mitral regurgitation.
In meteorology, the Coanda effect theory has also been applied to some air streams flowing out of mountain ranges such as the Carpathian Mountains and Transylvanian Alps, where effects on agriculture and vegetation have been noted. It also appears to be an effect in the Rhone Valley in France and near Big Delta in Alaska. [10]
[edit] Demonstration
The Coandă effect can be demonstrated by directing a small jet of air upwards at an angle over a ping pong ball. The jet is drawn to the upper surface and curves around, diverting the flow downwards over the back. This change in the momentum of the air flow is reacted out in the reduced pressure on the upper surface of the ball, this suction being sufficient to overcome the weight of the ball (when there is enough air flow). This demonstration can be performed using a vacuum cleaner if the outlet can be attached to the pipe and aimed upwards at an angle.
A common misconception is that Coandă effect is demonstrated when a stream of tap water flows over the back of a spoon held lightly in the stream and the spoon is pulled into the stream. While the flow looks very similar to the air flow over the ping pong ball above (if one could see the air flow), the cause is not really the Coandă effect. Here, because it is a flow of water into air, there is no entrainment of the surrounding fluid (the air) into the jet (the stream of water). This particular demonstration is dominated by surface tension.
Another demonstration is to direct the air flow from, e.g., a vacuum cleaner operating in reverse, tangentially past a round cylinder. A waste basket works well. The air flow seems to "wrap around" the cylinder and can be detected at more than 180° from the incoming flow. Under the right conditions, flow rate, weight of the cylinder, smoothness of the surface it sits on, the cylinder will actually move. Note that the cylinder will not move directly into the flow as a misapplication of the Bernoulli effect would predict, but at a diagonal.
The effect can also be seen by placing a can in front of a lit candle. If one blows directly at the can, the air will bend around it and extinguish the candle.
If two lit candles are placed side-by-side, the heated air from each candle rises and entrains surrounding air. Since both "jets" are trying to entrain common air from the space between the two streams, they are drawn towards one another. This is more apparent if the candles are making a little smoke. This is a demonstration of the Coandă effect without the presence of any surface. In some sense, the plane of symmetry between the two flows can be thought of as the surface.
[edit] Problems caused
The Coandă effect has disadvantages as well as advantages.
In marine propulsion, the efficiency of a propeller or thruster can be severely curtailed by the Coandă effect. The force on the vessel generated by a propeller is a function of the speed, volume and direction of the water jet leaving the propeller. Under certain conditions (e.g. when a ship is moving through water) the Coandă effect changes the direction of a propeller jet, causing it to follow the shape of the ship's hull. The side force from a tunnel thruster at the bow of a ship decreases rapidly with forward speed. [11] The side thrust may completely disappear at speeds above about 3 knots. [12]

Tunando o Jatinho mais ainda.....

Xan e Ricardo F. acho que com este motorzinho, o jatinho fica mais macho ainda...

The Hoffman Magnetics "Mighty Mite" EDF60 Motor Is Made In USA And Suitable For 60mm EDF, With Cutting-Edge Technology Describes This New Powerful EDF Outrunner. It's Capable Of Flying A 36oz Jet With Speed And Authority. Up To 2 lbs Of Thrust !
Specification:
- Weight: 75g
- Shaft Diameter : 3.0mm
- Kv: 4620 rpm / V
- R: 0.021 ohms
- Working Voltage: 11.1 - 14.8v (3 - 4S Li-Po)
- Power: 650 Watts
- Suitable For Fan: 55 - 64mm EDF

Veja o Video no link:

http://www.youtube.com/watch?v=wTocZdoxd3I&feature=player_embedded#

Setup: Hoffman Magnetics "Mighty Mite", Castle 45amp esc, 4s 2250mah lipo, and the Alfa 5 bladed fan : ) !

O jatinho parece familiar???

Turbininha tunada....

The Cyclone Power "Red Velocity" 64mm Special Metal Fan 4300Kv + Areo 60 ESC With SBEC Can Replace For The Stock Fan System Of Most 64mm EDF Foam Jet In The Market.
With The New Version Design And Great Performance, The "Red Velocity" EDF Can Provide Those Foam Jet With Super High Power, Fast Speed & Jet Feel !

Ricardo F, acho que com uma destas o isopor vai mai rapido....

Beriev Be-200 O unico hidroavião a jato em produção

Futaba, Futaba, Futaba!!!!!

A Futaba lançou um sistema de trainer sem fio!!! Futaba, Futaba!!!

Chega daqueles cabos trainer enchendo a paciência.

A distância entre os 2 rádios é de até 10m.

Acessório para o novo rádio da Jr!!!!

Pessoal, achei o acessório mais importante para fazer o novo rádio da Jr funcionar direito!!!

O.S Gasolina GT 55 - 55cc

Para o Marcelo e o Xan babarem....

The first gas engine for Japan O.S company. The code type is "GT55"

The design is base on nitro engine, the position of carburetor similar with nitro line engine
Specifications:
List price: 65,100 (w/o tax: 62000)
Size¡G54.93cc
Cylinder dim.: 41.2mm
Piston stroke: 41.2mm
RPM: 1500~8000 rpm

The carburetor set on front of engine can prevent leakage, and easy to adjust.

CDI plug with waterproof cover. The keep the high work voltage and low current are their features.



The CDI sensor using magnetism sensor. Special design IC with high sensitivity. It can keep stable rpm in low speed.

CNC cylinder liner with high precision. Special aluminum has low coefficient of expansion and very light weight
The large radiator can offer great heat dissipation for high power output.

JR 11X - Vídeo Promocional

Para ver video tamanho original, click aqui

Esquilo Escala 600E

Moçada, Mais um escala confirmado para o nosso encontro.Piloto João...

Essa Hobby King está virando baixaria....

O da direita, HK-500GT, U$ 69,95 e o da esquerda, HK-250GT, U$ 57,77

http://www.hobbycity.com/hobbycity/store/uh_viewitem.asp?idproduct=9975

http://www.hobbycity.com/hobbycity/store/uh_viewitem.asp?idproduct=9974

JR 11X - Lançamento

JR 11X

Furto Loja - Casa Hobby Mococa/SP

Bom amigos,
Na madrugada deste quarta-feira estourarm cadeado, fechadura e levaram o que deu pra levar. Ainda bem que não levaram os dois modelos Giants que estavam aqui para manutenção no dia. A camera de segurança pegou a ação dos bandidos e espero que isso ajude também.
Qualquer ajuda com informações será muito bem vinda. Depois dessa não sei se continuo com isso.
Itens roubados na loja Casa Hobby Modelis (Mococa/SP)

-Kit ARF Phoenix Models T-27 tucano 60
-Kit ARF Kyosho Spitifre 40
-Kit Revel 1/48 F-18 Super Hornet (estava na vitrine)
-Miniatura de carros em metal 1/24: Maisto Kombi, New Beatle, Camaro, Impala Versão taxi New York, entre outros.
-Miniatura de carros 1/18: Maisto Porche Vermelho
-Rádio 3 canais Kyosho para Automodelo Somente Transmissor
-Automodelo completo Ofna off road 1/8 Lx Pro c/ motor Ofna 26 e rádio futaba 2 canais
-Helicóptero MX 400 pro completo com giro futaba 240 e rádio spectrum 6 canais (park -flyer version).
-Combustiveis Morgan fuels: 4 galões 10% Omega - 2 galões 10% coll power - 2 galões 20/20 Ys 4T coll power - 2 galões Eliminator 20% automodelo
-Kits da Guliows e ainda 3 modelos montados sendo 1 J-3 super cub 24", um P-51 16" e um Aerobrás Pt-19 Fairchaild
-Veleiro completo Protech modelo Century
- Monitor LCD 17" Philips modelo 170cw

Obrigado a todos,
Favor repassem aos amigos.
Luiz Dutra.

CASA HOBBY
Rua Visconde do Rio Branco, 519
Sala 3
Mococa/SP
TEL/FAX: (19) 3665-1039

Campeão de vôo e design!!!

Este italiano, além de voar muito, tem os projetos mais bonitos de aviões que eu vi até hoje. Vocês já devem ter visto ele voar o Mig com turbinas vetoradas que foi colocado em 2 posts já faz algum tempo. É o Sebastiano Silvestri.

Este biplano, sonho de consumo, é o Miss WindS Bipe 50e. Fazia muito tempo que alguém não desenhava um avião como esse!!!

A primeira foto é do SharkS 30e e a do meio o AngelS Evo 50e

Vale à pena ver o vôo do biplano....e confesso que eu acho que meu negócio é muito mais avião do que helicóptero. Não trocaria um biplano desse por helicóptero nenhum!!!

Não se esqueçam que ele pesa mais de 3,0 kg

Foi carregar a LiPo no carro e....

Bufão, não esqueça de avisar seus clientes sobre os perigos de carregar a LiPo no carro, especialmente para aquele de Santos que foi tentar segurar o X-Cell 60 funcionando...