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Jerry Walker
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« on: November 15, 2008, 11:07:33 PM »

Wellcome to the JM Precision Gas Powered Model Helicopter ForumThis is an informal forum for anyone wishing to contribute ideas relating to Gas Powered Model Helicopters.
Please feel free to add new topics and ideas or even just ask other members for help.
Any experiences that you may have had or advice that can help others will be of great interest.

Jerry
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shanky22
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« Reply #1 on: January 18, 2010, 11:36:49 AM »

TURBINE Assemblies are tried and tested and built by ourselves... We utilise reliable turbine and second-stage parts developed with our own casings and combustion chamber. Turbine castings and CNC components are manufactured to our design and specifications. Development, and manufacture, is controlled in-house.

GEARBOXES for Pod&Boom and Scale Turbine Conversions are manufactured by ourselves using tried and tested components and assemblies. We build and test the Turbine and Power-Stage with the Gearbox... It is then ready for fitting.

AIRFRAME Conversions are tried and tested and designed and manufactured by ourselves... with additional suppliers also supplying a range of Quality Components as specified by Ourselves.
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carbancle
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« Reply #2 on: February 20, 2010, 08:52:51 AM »

I have six years experience of working on malaria and completed my M. Phil in molecular medicine. I am interested in Doctoral scholarship from you in the field of molecular biology with specialization in plasmodium biology. Curently I am working as Research Officer in Pakistan. I have done my Master in Microbiology with A+ (80.8%).
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ddni666
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« Reply #3 on: February 26, 2010, 08:04:48 AM »


Is an online and print magazine available on a monthly basis.  Please feel free to register for free, your details are kept by us and in a safe environment and are never either sold or given to any third party.

Our news is on Search & Rescue, EMS, Civil & Military helicopter operations, Corporate Helicopters, Flight Training we update the news online as soon as possible.
 
In an addition to our updates, we are pleased to advise that as from March 2010 Helicopter Monthly will include UAV news (Unmanned Aerial Vehicles) such as Camcopter and so on.  The magazine will also be seperated into sections such as Civil, Military, UAV etc.
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helma
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« Reply #4 on: May 26, 2010, 11:24:38 AM »

Piston powered- 100LL or 80/87 (80/87 is almost impossible to find, as newer piston powered aircraft designed with engines that require 100 octane Low Lead engines.)

Turbine powered civilian helicopters- Jet A (based upon an unleaded paraffin oil.)

Turbine powered US Navy helicopters- JP5 (a kerosene based fuel with a higher flash point than Jet A. The higher flash point reduces the chance of fire caused by exposure to surrounding high temperatures. For example- consider aircraft on an aircraft carrier, if one aircraft catches fire, the nearby aircraft are better protected from fire.)

JP 4 was used from the '50 to the early '90 for military turboshaft powered aircraft. JP4 was a 50/50 mixture of gasoline and kerosene. JP8 replaced JP4 in the early '90s. JP8 is less flammable and offers better combat survivability. It is the primary fuel for military turboshaft powered aircraft. (except carrier based aircraft)

Trivia: You can identify aviation fuels by their color. 100LL is blue, Jet A and JP5 are clear. Dyes are used in aviation fuel for safety reasons. Putting Jet A in a piston powered aircraft would lead to an engine failure and possible crash. 100LL in a turbine is bad also, as the engine would run very hot and become damaged.
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sekar49
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« Reply #5 on: June 09, 2010, 08:42:53 AM »

On average, nearly all nitro helicopters can last up to 15 minutes. One thing that serious R/C helicopter enthusiasts love about nitro-operated models is the thrilling experience they get similar to a real-life helicopter. The maneuver and the noise it produces sort of simulate a real flight thus a more amazing flying adventure.

There are a number of plus factors, such as: More flight time since tank can be refilled immediately, Steady power that is coming from the engine, Secured and easier direction, Provides more realistic and adventurous flying experience, No upgrade needed when moving to an ultra-light helicopter.

Some of the drawbacks you might experience include: More expensive to operate and maintain, Requires a level of expertise to use and maintain, Produces noise, Can be a little messy because of the gas, May be restricted in several places due to some laws.

Things to prepare: Electric starter - nearly all nitro helicopters contain clutches so a pull start or twirly stick are not available, Engine - recommended are O.S. engines, Flight box - it organizes and keeps your other tools in one place, Fuel pump - either hand or electric pump. Makes it possible to transfer fuel from your container to the helicopter's tank, Glow plug ignitor, Gyro - for assisting the pilot to hold the heading of the helicopter, Muffler - ensure that the size fits your helicopter and engine, Radio system - includes 7-channel transmitter, PCM receiver, 4 digital servos, switch harness and a charger.
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