I used 24 density polystyrene foam. ++++++++++++++++++++++
Dankie Eric My first KR connection was via Peter Eich in the early 80's - he put me onto Sakkie Halgreen - I watched UKU being built, but he was already using poly-U. There was one other (KR1) flying at the old BaraG - owned by a guy called Speedy, but I never got see it under construction. The reason for my curiosity - I have been to and fro on the topic of polystyrene vs. poly-U for months now. It would suite me to use material I can get from Sagex and ship up to Zambia. I understand the downside of styrofoam in that fuel, polyester resin/ vinylester and most solvents it will dissolve it, plus it is not as easy to sand as poly-U. I am however of the opinion that over 2lbs /cub ft, Styrofoam is as good or better in shear and thus equally suitable as a composite sandwich filler. I have not seen Last-O-foam, but I gather it is a better quality poly-U? When did you build / finish your KR? Do you have any pictures posted. Did you add a layer of slurry over the foam before laying up the glass (Dynel?) I presume the 24 is kg/m3? - what is that in lbs/ft3? Groete Steve J
