Introduction of my tools for EP

There is case it is necessary when an Electric Powered RC Helicopter and an Electric Powered RC Airplane are enjoyed.

I introduce the properties that are useful for these.

1.NiCd battery charger 2.Time keeper 3.Band monitor 4.Motor Maintenance Tool

1.NiCd battery charger

We made the charger of PWM control & delta V perception type. The parent power supply is the battery (24V) for the an automobile that connected 2 series.
We produced chargers containing 2 circuits 3 unit.
Those make it possible to charge 6 batteries simultaneously. (About 35 minutes)
Photograph is the charger that I am bringing in a flight area. Those are using IC 'MAX713' for NiCd battery charging.
A circuit has been made on the basis of a maker recommendation circuit. We bought IC and data with Akiduki Tuusyou of Tokyo Akiba field. Those required about 10,000 yen.

A circuit figure is here. kairo.gif


2.Time keeper

@This is the timer that used the hand held computer of EPSON.
I purchased this with the minami musen of Akiba field before about 6. The price was 30,000 yen.
When an Electric Powered RC Helicopter is flown,we require that a flight time is grasped. Battery lack is connected to a crash. Thereupon, I thought the utilization of this computer. It has come to work superbly in the riverside of Ooi River.
Function: 0-4min A buzzer sounds every one minute.
The number that a buzzer sounds informs time when passed. When time passed 4 minutes a tone changes. A more special sound is sent every 30 seconds. As for this the grasp in detailed time enables. PROGRAM is written in BASIC language. It is an easy program.
A similar function is attached, to a recent high-quality Proportional. However, my system that a sound is big, to be able to change to fond of setting differs. A black thing that exists left a photograph is the speaker for a car stereo. It is the thing that was attached to my car before. It has been connected to the outside speaker terminal of HC88.
An assistant and other persons are able to grasp time when passed during flight.


3.Band monitor

This is a general wide band receiver.
Ooi River where I am always flying is a vast flight area. However, the lover of RC helicopter and RC airplane show suddenly and transmit a radio wave. It is a very dangerous deed.
There is the person who manners are lacking rarely. Also, there is the person who there is not the recognition of radio wave interference.

I make it a rule to send a radio wave after I confirm whether the frequency of oneself does not do interference.

A photograph is the wide band receiver 'AOR2002' that I am using. This is the thing before 10 years over. At the present moment, a smaller good thing is sold. This machine type is not recommended.
RC band of 40MHz and 72MHz are had been remembered to a memory. All bands are scanned always.

I am always hoping safety.


4.Motor Maintenance Tool

When an Electric Powered RC Helicopter and an Electric Powered RC Airplane are enjoyed, the maintenance of a motor is the important work that can not lack it.
An Electric Powered RC Helicopter decreases power when the maintenance of a motor lacks. A various method is reported in a model forum of NIFTYServe.
Here, I introduce my method and the tool.

(1) Fiber brush: "MARS-FIBRASOR" STAEDTLER GERMANY purchase price: 850 yen
This is one kind of an eraser. In Japan, we can buy in a big stationery store and a picture material store.
It is called "fiber brush".
The bunch of thin fiber is included. We put out necessary length from the tip of a fiber pen. And, it becomes beautiful easily when a black -ization commuter is stroked lightly.
The eraser containing sand is used for the maintenance of a motor well. There is not the difference of cleaning performance.
However, there is the next merit.

I think that cleaning work is had better do every 10 flights, in the case that I am using 02H of Tamiya with 9.6V on an experience.
Fiber that was broken falls. Pay attention so as not to be attached to a hand. It sticks to a hand and be dangerous.



This is a fiber brush.

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In this way, the commuter of a motor is cleaned.


(2) Micro Lathe: a commuter precise grinding machine. KOSE company K-0101 25,000 yen

As for a motor a commuter becomes uneven, when the use number increases. This is the cause of motor power down.In the case that the power supply is 9.6V especially, the trend is strong.
I grind a commuter with this lathe every 20 flights.
In this way, power revives.


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