here's a couple more for consideration:

D/R - Dual Rate
Expo - Exponential
IU - Idle Up
TH - Throttle Hold

Originally Posted by bizzy511

this isnt an abbreviation, but what are the "CLASSES"?

i think the class refers to size of the heli, but im not sure.
i sometimes see people say "250 class" or "450 class", are they referring to size?

also what are the sizes for each class?

Very good question but no answer. I've googled a lot on this subject but didn't find a clear and conclusive answer. Same goes for micro/mini/etc.. different limits are cited in different places.
Anybody able and willing to explain it to bizzy511 and yours truly ?
K2
Yeah, BUMP

Originally Posted by Koala2

Very good question but no answer. I've googled a lot on this subject but didn't find a clear and conclusive answer. Same goes for micro/mini/etc.. different limits are cited in different places.
Anybody able and willing to explain it to bizzy511 and yours truly ?
K2
Yeah, BUMP

Scroll down to "RC Electric Helicopter Sizes."
http://www.rchelicopterfun.com/elect...licopters.html

@SoLo, AXL A slow night in February like a slow night in March

Mike

PS: to stay on topic....has "PITA" been mentioned

@Chap2012 : nice site but still no answer ...
It doesn't seem to be something a lot of people really know in detail.
OK, the bigger the figure the bigger the heli, except when we come tot the really big guys.
From the NE site it seems that 100 series stops at 33 cm rotor diameter and the 150 series at 49 cm. and then ... nothing anymore ...

Originally Posted by Koala2

@Chap2012 : nice site but still no answer ...
It doesn't seem to be something a lot of people really know in detail.
OK, the bigger the figure the bigger the heli, except when we come tot the really big guys.
From the NE site it seems that 100 series stops at 33 cm rotor diameter and the 150 series at 49 cm. and then ... nothing anymore ...

How bout this? Which class?

Worlds smallest One-man Helicopter GEN H-4 by ADEYTO (2 min 57 sec)

BTW, I'm a coax Guy

I'll have a wild guess. Gen-class ? Or a 4000 in metric and a 1600 class for non-metric-believers ?

Originally Posted by Koala2

@Chap2012 : nice site but still no answer ...
It doesn't seem to be something a lot of people really know in detail.
OK, the bigger the figure the bigger the heli, except when we come tot the really big guys.
From the NE site it seems that 100 series stops at 33 cm rotor diameter and the 150 series at 49 cm. and then ... nothing anymore ...

It's just that it's been posted dozens of times, on RCG and elsewhere. Helis were referred to by blade length- 700, 600, 550, 500, all by blade length in millimeters. Then there were by engine size for glow helis-- .30 engines meant 500 to 550 mm blades; .50 or .60 were 600 to 640 mm blades; and .90s go for 640 to 700 mm or more. When the electrics came along, they were advertised based on the motors they ran, 400s, 450s, and so on, and then Align decided to promulgate "500" helicopters with 425mm blades and no 500 motors in sight for years, either to help advertise their products or to confuse generations of new helicopter fliers (you choose).

Anything below a "450" (a 325mm heli) is pretty much arbitrary, and companies can pick what they want, but it really doesn't matter when they're that small; anything above that, unless it's the BS Align "500," is the length of the blades in millimeters. It's easiest to talk about blade length or all-up weight. For me, among others, I have two 425s (what Align would call a 500), one upgraded to a 480, and I have a 520 that I've stretched to a 600. And a 600 that I'm thinking of bumping to 680. It's much simpler if you talk about them by the blade length and not a marketing term.

Thanks, its dawning a bit but remains confusing as the manufacturers are not consistent in their model designations : e.g. the NE Solo Pro 328 has effectively a rotor diameter of = yes 328 mm, but the Solo Pro V, called the 260, has a rotor of only 190 mm and their "Kestrel 500" exist in two sizes but far less dan 500 mm of rotor ....
Mind made up, I'll use the rotordiameter in the future. Seems the most logic way to qualify them.

Originally Posted by Koala2

Thanks, its dawning a bit but remains confusing as the manufacturers are not consistent in their model designations : e.g. the NE Solo Pro 328 has effectively a rotor diameter of = yes 328 mm, but the Solo Pro V, called the 260, has a rotor of only 190 mm and their "Kestrel 500" exist in two sizes but far less dan 500 mm of rotor ....
Mind made up, I'll use the rotordiameter in the future. Seems the most logic way to qualify them.

while that would be the most logical, unfortunately when you discus the specific heli, you have to pretty much use the name the manufacturer gives it to avoid confusion, and since there are no real standards, especially for the newer microhelis we are pretty much out of options if we want to be sure we are discussing same heli

maybe a weight class might be more appropriate?

mk

FUI - Flying Under the Influence
FWI - Flying While Intoxicated

Do we already have FWGHBSWMBO?

Flying While Getting Hit By She Who Must Be Obeyed

FOD Flip of Death
See that occasionally... on the board

Although I keep reading the forums.

I keep reading.. Adjusting the pot.

I doubt it has anything to do with gardening. I have seen adjust the gyro. But pot ?

Potentiometer. Basically a variable adjustable resistor. They are used to signal the gyro, for instance, as to what sensitivity to adjust to. Varistor is a similar term. The volume on a non digital radio uses the same thing directly to vary the volume. Inside is a circular surface that has a uniform variation in resistance. A probe is rotated to different positions on this surface to gain the desired resistance.

What does "3G" mean? Example, Solo PRO 180 3G Flybarless 3D Micro Helicopter.

3 gyros?