There is. It`s called a Swift Folder.
The two halves of the frame pivot together then clamp onto the oversize seatpost with quick release skewers.
The bike delivers a very stiff fast ride and is one of the all time best high performance folder designs.
There`s a couple of threads dedicated to Swifts here in the folding bike section.
The aluminium frame used on the discontinued Xootr model is still available from the bike`s designer Peter Reich at swiftfolders.com
It`s a fantastic bike. Apart from the large diameter seatpost and clamp on bar riser the bike uses all standard bike parts and thus can be easily modified or upgraded.
The ride is totally phenomenal. My Swift has replaced my road bike. I`d post a link to some pics or further discussions here on forums, but I`m still a newb.
Last edited by joey buzzard; 05-21-19 at 03:33 PM.