The Mydeltapi Webstore
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Remote controle boat models
Welcome to this online store for
remote control boat models. First there is a presentation of boat models driven by electric battries. Under that you can find remote controlled sail boats. And there is then an exhibition of nitromethane or gas driven rc model boats. By clicking on the banners or buy buttons, you can learn more about the presented model or buy a model. Further down there is some information about radio based controllers used in remote control models of boats and other vehicles.
Electric battery driven remote control boat models
Pages with more products
RC helicopters and fast-winged aircrafts
More RC helicopters and fast-winged aircrafts
For advanced helicopter models, please go here
RC models of cars
More RC model boats
Back to main menu of all hobby and professional products
Information resources about vehicle technology
The working principles of
Motor technologies for RC aircrafts and vehicles
About remote control transmitters and resceivers- please scroll down
About the tecnology in RC helicopters
About helicopter history
Battery technology for RC vehicle models - please see below
Good online stores to find more RC models and hobby products
HobbyTron - a general store of RC airplanes and other hobby products - By clicing at this banner you will find many helicopter and aircraft models, and also a lot of other hobby articles. Most of the models are electric driven. Please click here to see one of the models and browse for all of the others.
Store with good offers on consumer electronics - and also many RC aircraft models - In addition to all kind of electronics you will also find a fine collection of hobby products you will find a lot of remote controle hobby aircraft models for an affordable prize. Most models are electric driven but there are also some nitro models. You will also find many other types of hobby items.
Trend times toys - a general hobby shop with many fine products for the youngest customers - This is a great shop of RC models and all other types of hobby itens for all age groups. It has however partly other models than the other shops presented, and you will find more for the youngest age classes here.
About remote control model transmitters and resceivers
In order to control a RC modeř vehicle there must be a transmittor that is used to perform the controle operations. The transmittor sends commandoes to the vehicle, and it resceives feedback from the vehicles about the state of the vehicle.
There must also be a resceiver inside the vehicle. The resceiver resceives commands from the transmittor, it sends back information about the state of the vehicle and it sends signals out to the stearing components of the vehicle and the motor to performs actions.
The transmitter and resceiver together is often called a controller.
The signals going between the transmittor and the resceiver can be analog or digital. By digital units, both the resceiver and transmittor can have a whole computer inside, and can thus send and resceive a lot more complex commandos than analog transmitters and resceivers.
The commands and state signals going between resceiver and transmittor are carried by radio waves. The frequency used varies, but have to abide to govermet regulations regardig use of radio frequencies for different types of use. In USA frequencies around 72 MHz is often used. The way of modulating the radio wave to give meaningful information can be AM or FM.
There a several types of actions to be controlled. In a car, there is the actions of the steraing wheels and the actions of the motor. In a helicopter, there are the actions of the motor, the foreward-backward actions of the main rotor, the idewise action of the main rotor, and the actions of the tail rotor, for example. A model can also have extra equipment that must be controlled, foe example video cameras.
The parts or functions in the resceiver and transmittor that is dedicated to each type of action is called a channel. The more channels a RC vehicle has, the more advanced combinations of action can it perform.
The radiotransmission for the different channels must be held apart. This can be done by using slight different frequencies for each channel. If however the control signals are digitally coded, the contol signals can be sent as packages, and in each package there will be infomation about what action types the command regards.
It is important that the controle signal are not blended with signals to controle other vehicles in use. Therefore the person controlling a vehicle must be aware of other transissions going on around the same place, and their frequences. The he must choose another frequency. This can be done in some units by the use of replaceable crystals. More advanced unit use syntisizer tchnology, called Phace Locked Loop, that can modulate the wanted frequency.
Som modern types of controllers use spred spectrum technology. In this thecnology used by the transmittor and resceiver variates in a cyclic manner all the time. Then it is little chance that two vehicles use exact the same frequency at any given time slot.
USA and Canada reserved radio frequencies
European reserved radio frequencies
Australian reserved radio frequencies
New Zealand reserved radio frequencies
Amateur Radio License reserved radio frequencies