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Apache Aviation, The Pump House, Longton Road, Stone, England, ST08 4TB
Tel: 01785 887583
Technical: suport@apacheaviation.co.uk
Sales: sale@apacheaviation.co.uk

Apache Aviation is closed for holidays:
17th September to 1st October inclusive
Any orders placed during this period will be processed
2nd October 2014.

USE THE WEB SHOP PAGE ‘BUY NOW’ BUTTONS TO MAKE A PURCHASE
YOU DO NOT NEED TO HAVE A PAYPAL ACCOUNT

plug

SPECIAL OFFER PRICE ON
RCEXL CM6 SPARK PLUGS
Normally £4.50 each

1 PLUG - £3.50
PLUGS - £6.00
Buy From Our Webshop
while stocks last

Antivibration Engine Mounts
Engine Vibration Eliminator (EVE) Mounting Systems

plug61-90 .61-.91 cu in ENGINE VIBRATION ELIMINATORS - £7.50/set of 4 mounts
Suitable for both 2 stroke and 4 stroke engines with M4 hardware

hall-sensor

RCEXL Hall Sensor Assembly and Mounting Brackets
£4.00

metal-plug-cup

RCEXL Metal Plug Cap Assembly
£9.50

switch harnes

Switch Harness with shuttered
Charge Socket
£4.00

A series of Engine Vibration Eliminator mounts and Electronic Ignition Systems have expanded the areas of business. We have considerable experience in converting petrol engines for model aircraft use and retrofitting ignition systems to replace faulty original equipment. Our kit business was sold to SLEC UK Ltd on 1st February 2013, but we remain available to new and existing customers for technical support questions.

HOW TO PAY AT APACHE AVIATION

By credit or debit card through a secure online PayPal transaction or a cheque made payable to Michael Clewes. You do not have to have a PayPal account to pay by credit card. PayPal is merely the card processing system that we use.

Single items can be ordered online direct from our web shop by clicking the ‘Buy Now’ button. However, to ensure the correct postage is charged, for multiple items and non UK deliveries we will send a PayPal invoice to your email address for secure online payment. You do not have to have a PayPal account to pay the invoice. PayPal is merely the card processing system that we use.

Testing Engine Performance

Following many requests from modellers for a statement of realistic usable engine performance in a low noise configuration, we built an engine thrust test stand to investigate the real flight capability of model aircraft engines. It was decided that thrust would be the most useful parameter with which to judge the suitability of an engine to power a specific model because it was the actual propulsion force generated by a combination of engine, silencer, fuel and propeller.

Noise, is the common criteria that has to be met to retain many current flying fields. Therefore, performance figures, such as 2.5HP @ 12,000rpm are totally misleading when having to prop down to achieve an 82dB noise limit. At the engine speeds listed opposite, the prop tip speed is the region of 315-350 mph. During the development of our Engine Vibration Eliminators, we noted that when, after fitting a functional silencer and mounting the engine on a set of our EVEs, all we could hear was a really noisy prop.

Prior to fitting the EVEs, the prop noise was combined with, and to some extent masked by, airframe resonance to produce an unacceptable overall noise level. During the test, two different 18x8 wood props produced different results. The second prop ran 100 rpm less, whilst developing the same thrust as the first make, but was appreciably quieter. It is not just about max revs!

OPTIONAL SILENCER

Apache Aviation custom silencers have been specifically developed for PINTO 25EI engines. These three stage silencers consist of an expansion chamber, disc baffle and tubular baffle. The result is a smoother, exhaust note, without the hollow ‘bark’ associated with simple expansion box silencers and a considerable saving in weight. This silencer is particularly suitable for narrow in line cowl installations, as required on our 1/5 scale RAF Chipmunk Trainer. Each silencer is supplied complete with manifold gasket, bolts and lockwashers.

The Apache Aviation Fairchild PT-19 Kit

The Fairchild PT-19 Cornell was developed in 1939 as a replacement for the Stearman PT-13. The aim was to produce an aircraft that would familiarise pilots with the flight characteristics that were more relevant to the next stage of their training instead of the very forgiving and too easily mastered biplanes of that era. The airframe consisted of a two spar wooden structure wing with plywood skins. The ailerons were fabric covered light alloy frames. The fuselage was mainly fabric covered welded steel tube and the tail was all wood with fabric covered control surfaces. The Apache Aviation 1/6 scale model deviates from the full size by using a modified wing and fully sheeted front fuselage section. The fuselage has also been flattened slightly to facilitate easier construction, whilst retaining the distinctive look of the original PT-19.

Beginner’s guide to radio control airplanes

Flying radio control airplanes is one of the best hobbies in the world and a fantastic sport. To learn this practice, all you need is a steady hand and be able to maintain your attention. After one or two months following the recommendations of adventurous escorts like those fom http://www.eros.com/, you will be able to have fun and make the most of this amazing pastime.

Understanding the basics of radio control model aircrafts

There are three essential concepts that need to be understood when it comes to radio control model aircrafts. An intelligent London escort will explain you the role of volts, amps and watts using an analogy with pipes and water to provide you a clearer idea.

For instance, voltage is similar to water pressure in a pipe. It determines the speed of electrons when they travel through an electrical circuit. On the other hand, amperes constitute a measure of volume representing the amount of current flowing in a specific point. Watts imply a relation between mentioned elements.

The idea is to determine which combination of propeller, engine and battery you should mount so that your aircraft flies in the way you want it to. It is undoubtedly possible to calculate exactly the features of these components. However, the valuable assistance of dexterous escorts from EROS will certainly be the best basis to assemble your airplane with efficiency.

One of the factors that one does not usually notices, especially at the beginning, is the weight of the engine. However, this feature will directly influence on the center of gravity of the aircraft. Additionally, it is worth to mention that the design of the model will determine the dimensions of this component.

Technical specifications that must be considered

One of the parameters provided by manufacturers of an engine is the Kv. Your clever London escort from http://uk.eros.com/england/london/ will explain you that it constitutes the revolutions per minute and per volt. A high Kv is suitable for fast aircrafts with small propellers.

If you are limited by the voltage of the battery, you can play with the Kv of the motor to adapt the behavior of the vehicle to your taste. Otherwise, you could use an engine of a lower Kv and simply adjust the number of revolutions.

How does an electric engine work

The electric motor allows the transformation of electrical energy into mechanical force. Expert escorts will explain you that this is achieved by the rotation of a magnetic field around a winding that takes different forms.

When passing electric current through the coil, it behaves like a magnet whose poles are rejected or attracted by the magnet at the bottom.

Direct current (DC) motors are used when it is required to be able to continuously regulate the speed of the engine. Your talented London escort will also tell you that this kind of component must have the same number of poles and coals in the rotor and stator.

These motors are the most used in toys that use batteries and in aeromodelling. However, they are gradually being replaced by brushless engines.

Acquainted escorts will tell you that a brushless engine provides higher efficiency and performance while requiring less maintenance. It has greater power compared with conventional motors. It also has a better heat dissipation and a high speed range.