Follow along with the video below to see how to install our site as a web app on your home screen.
Nota: This feature may not be available in some browsers.
Ik heb ergens gelezen dat dat te maken heeft met de lengte van de rotor, twee bladen zonder rotor head gemeten. correct me if i'm wrong.
Model helicopter sizes
Helicopter sizes are often quoted as a number: 16, 90, 300, 325, 450, etc... Unfortunately these numbers are all measuring different things so here's a guide to why they were chosen.
Glow helicopters are usually measured by the size the motor they are designed for. A small helicopter might take a 0.30cu motor, a large one a 0.90cu motor. This is normally shortened to 30 or 90.
Older electric helis were often designed to use a certain number of C sized cells. The newer designs from the same people have sometimes kept the same numbers (e.g. Swift16, Logo 10, 16, 20, 24)
Small electric helis are often designed around a particular cheap brushed motor. These motors were called 300,400,500 and 600 based loosely of the length of the motor can in tenths of a mm. Each size had roughly twice the power of the previous size. Then there are upgraded versions of these motors, where the numbers were made up to fit the series according to the power of the motor (such as 350 and 450). Naturally the helis based on these motors were named after the motors. These days only cheap 300 sized helis would use a brushed motor, and even those are often upgraded.
Rotor blade length in mm is now a common way to compare larger helicopters, although there is often a range of blade lengths that be used, and 'stretch kits' that lengthen the boom to allow even longer blades on the same helicopter.
Some comparisons
HoneyBee FP or CP uses 300 sized brushed motor and 250mm blades.
The TRex uses 325mm blades and is classed as a 450 (electric motor size, although no one uses a brushed motor)
The Ikarus ECO 8 (an 8 cell pack) uses 500mm blades
0.30 size is about the same as 550mm blades,
0.50 size about 600mm blades (same as a Logo 16)
lekker ingewikkeld zeg.
waarom hebben ze niet gewoon een heli van 65 cm een 650 serie, en een 83 cm 830 serie genoemd .......
was het naar mijn iq iets makkelijker geweest.
Komt omdat er al vele jaren langer helicopters rondvliegen dan jullie en ook ik ermee vliegen.Mee eens!![]()
ik vond het gewoon een beetje vreemd dat er gesproken word van een 450 formaat, terwijl die 450 nergens terug komt in de desbetreffende heli.
maar goed, het is dus een oude term die nog steeds gehandhaafd is. ik begrijp de formulering wel, maar ik zat mijn KDS 450 aan te staren, en heb toen de rolmaat genomen en ben gaan meten ......... geen 450 te bekennen !! vandaar mijn vraagstelling hierover.
Als je het eenmaal weet, valt het je niet eens meer op...