Hi Kaptain Karl,
I had a look through avsim and flightsim and the only Robin that seems to be available is a HR400. This post heres seems to support this
http://www.visualflight.co.uk/forums...?TOPIC_ID=1851
If you are still interested in getting a HR400 (which apprently is similar) try going here:
http://library.avsim.net/download.php?DLID=22485
http://library.avsim.net/download.php?DLID=42704
This is the best model by the looks of it is one and was developed for FS2002 and then adapted for 2004. You ill need to get both files to get it to run well on FS2004. Any probs, please give me a shout!
Fingers