Kaman K-Max, Rotex AG

uncle chop chop
I have never seen one like this, i take it the twin rotor heads counter act the tail rotor?

Günther Debiscop
Nice one. Which kit?

Pierre-Christian Baudru
Very nice one, great job !

Ueli Hebeisen
Indeed the two rotors spinning in the opposite direction eliminate the tail rotor. This system is called a Flettner system and was invented by the German Anton Flettner during WWII. This system was then adapted by the Kaman company later.
The kit is from Attack Squadron, a Polish company. It is a resin kit with PE parts: high quality but not so easy to build.
The Kaman K-Max is one of the few - if not the only - helicopter that can lift more than its own weight.
And yes: in operation the rotors are offset 90° but for service they can be disengaged to any position. Having them parallel allows for storing in a narrow display case 😉

Gareth Windsor
An interesting build and you've done a nice job too. I was aware of the Flettner system but didn't know that there was a modern helicopter utilising it.

Ekki
Very good job on a very interesting subject

Mike Grant
Love it 🙂 Do these markings come with the kit?

Ulf Petersen
Very interesting model, Ueli. Great build!👍

Ueli Hebeisen
@Mike: no, these decals are custom made (Alps printer). I had the chance to visit Rotex AG and take photos of the HB-ZGK and Rotex gave me the permission to use their logo. There are two K-Max operated by Rotex, the HB-ZGK has the warnings at the rotorhead in englisch whereas the HB-ZIH has them in German.

Dutch
Very nicely done! I have always been an admirer of Kaman's inter-meshing rotor helicopters. You have captured the K-Max very well. Terrific work and photos.

Ueli Hebeisen
Attack Squadron the polish company had done a reissue of this kit, this time the added decals for 4 civil versions. Among them is the K-Max that I have built.
And more news from ROTEX the Swiss K-Max operator: they are adding a third K-Max HB-ZTW to their helicopter fleet.

Łukasz Gliński
Ahhh, lovely Liechtensteiner K-Max, how come I missed it for so long? Fantastic! What's the fit of the parts?

Donald Dickson II
I did not know anyone did a kit of this! Thats awesome!

I did the Husky...
HH-43 | Album by smokeriderdon (1:32)