I came up with this design for the rotovelo roof last year when I was deciding whether or not to buy a rotovelo which came with no roof. Similarity to the current trisled version is coincidental. Tana Lee did the assembly and after a test run today, it works a treat. It's simply 2 sides and a top cut from a sheet of coroflute welded together with hot glue then tape. We secured the coroflute cap to the hatch using 4 short lengths of alloy. We bent footings for them in the vice, punched a few small bolts in it and thats it. We will glue velcroe to the front uprights so a detachable clear plastic screen can be carried/used as required. I immediately noticed the coroflute dulled the chain noise which was a nice surprise. I did try a flevobike velo roof. I found the flevo bike roof to be unstable in the wind and it involves a tricky 2 move process to enter/exit the bike. By contrast, this roof is rock solid, light as a feather and a few hours to make at under $100 NZ.