Cirrus 75 from Graupner


The Graupner Cirrus was produced in 1969, and was a milestone in R/C soarer design.
The full size aircraft on which the model was based won the Open Class trophy at the 1968 World Gliding Champs in Leszno, Poland.

Technically the most interesting features of the model were (a) the fuselage construction which employed two half-shells of ABS plastic, and (b) the all-flying tailplane. Both were novel features at the time. Also noteworthy were the beautifully detailed and accurate plans.

Wing construction was conventional D-Box but with great attention to detail. Highly accurate die-cut balsa and ply parts joined together to make an intricate but light structure.

Flying characteristic took some getting used to. Response to the rudder was poor due the the small dihedral (6°), but once in a turn the model would handle well even at high angles of bank. In a 5 - 10 knot wind the Cirrus was a competitive Open class thermal soarer although the long glide angle made airbrakes a desirable option for landing.

Structurally the Cirrus's main weak point was the fuselage which was prone to break in cold weather.

The Graupner Cirrus was eventually superceded by the Cumulus design from the same company, and out went the intricate - and expensive - wing construction in favour of foam and veneer. The Cumulus was a minor trend-setter, but it didn't have the elegance of its predecessor.

There are still a few of these classic models still in regular use, carefully tended by their owners.

Description by RC Soar


Radio icons

FrSky X10

FrSky X12s

Jumper T16

Jumper T18

Radiomaster TX16S

FlySky NV14

FlySky EL18

PNG (192x114)

FrSky X9D

FrSky X9E

BMP (64x32)

BMP (64x32)

FrSky X20

FrSky XE

PNG (300x280)

BMP Recommended (300x280)

FrSky X18

FrSky Twin

PNG (180x166)

BMP Recommended (180x166)

FrSky X10

FrSky X12s

PNG (180x160)

BMP Recommended (180x160)

FrSky X10

FrSky X12s

JPG (155x100)

Futaba 18MZ

JPG (158x80)

Graupner MZ16

Graupner MZ32

BMP (158x106)

Jeti DS-24

PNG (320x240)

Spektrum ix12

Spektrum ix20

JPG (266x164)

Similar Models

Some content in menu 2.

Wingspan: 2830mm (111.4 in)
Length: 1150mm (45.3 in)

Weight: 1600 g (3.5 lbs)
  • Wingspan: 2830mm
  • Fuselage length: 1150mm
  • Overall length: 1250mm
  • Wing area: 49,8 dm²
  • Elevator are: 5,8 dm²
  • Total wing area: 55,6 dm²
  • Flight weight: 1600 g
  • Total wing loading: 29 g/dm²
  • Center of gravity: 80 mm
4,418 models
(53,016 icons in the database)

Although I do my best to complete this library, you may not find the model you are looking for.

In this case, do not hesitate to ask me to add it : You're not bothering me. Please be patient, depending on my workload, I may take a few days to work on your model and gather information.

Ask for a new model

Generate your own image


Reno Aces Grumman F6F Hellcat
F4F Wildcat
Inductrix BL

A simple 'thank you' or a kind message is my first salary but if you think this website is useful, if you like the content, the service and if you want to participate to the hosting, feel free to donate. I thank you in advance.

Read me
Recent Changes
AIR-RC is the largest online database about RC Model Flying and it's growing...
Each model has descriptions, specifications, photos, video, icons for your radio and links to shops and manufacturers.
We sell nothing, it's made by RC hobbyist for RC hobbyists. Enjoy !
Copyright AIR-RC © 2024