Not to Hijack a thread but I also bought a Kalt helicopter from Ebay recently. Not sure what it is but I popped to my local wealth of knowledge known as Martin Briggs in Ledbury and got all the necesary parts to get it up & running again.
This is only my second helicopter, the first being electric so quite a step up in size.
It has a 61 engine OS Max and is just over 4' nose to tail.
Setting the helicopter up is one thing but I think I will need a degree to set the Futaba transmitter up....

Carl