I ordered my CTC bags from
Wiggle Ltd in Mid January but they still have not arrived. As soon as they arrive I will have a measure up and see what I can come up with.
Steve
Why wait for the ctc bags? I bought one of them but I never opened the parcel - it weighs 750g and is probably just mattress shaped. With sail cloth, if it's anything like the superlight cuben that Oookworks use, it's expensive material. Why not work on the basis of the minimum size for a touring bike with 700c wheels and a rack? Cut the sillouette twice, a couple of inches spare to allow for the width, stitched together all round but leaving the end open. Personally, I'd go for no zip / velcro to save bulk (I'd just use parcel tape).
To avoid arguments at the airport, it'd be good if it followed the curve of the wheel at the front (so it shouts "bike bag") and it'd be worth experimenting with stencils and spray can to have something official-sounding written big on the side such as "Airline Bike Bag".
One good thing with cuben is that it is sort of see-through.