Banktoturun;
Don't get me wrong, I am a delta worshiper myself! All of the advantages of the delta seem to outweigh any drawbacks. Plus you can build one at a fraction of the weight/cost/time of any other plane except a flying wing(ARGH!)
I personally haven't tried it with a radar gun, but have any of you built a negative aspect ratio "delta" to see how fast you can go? The one I built with a whooped Super Tigre .40 would easily outperform a low winged sport model a friend had- It had a FX .46 w/tuned pipe!! Used to get him really P.O.'ed!!
I also built a 2 hr. job that was a flat plate of 1" foam with all the goodies glued right in top-servoes, pushrods, tank, ect. and it had a repectable glide ratio-no kidding.
Keep me posted on the negative aspect ratio thing, if you will. I think I used a .7 width to lenght if I remember.
Jetts