Isn't the Rawland Ravn design for this. Fat 26"/ mid 650b/ skinny 700c. You'll not be getting hold of one of them in a hurry, but maybe have a look at the geo to see how it works?
https://www.bikeradar.com/mtb/news/article/rawland-cycles-launches-ulv-and-ravn-48176/
Never seen it before, by yes, it certainly looks that way!
@pascalo started
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Isn't the Rawland Ravn design for this. Fat 26"/ mid 650b/ skinny 700c. You'll not be getting hold of one of them in a hurry, but maybe have a look at the geo to see how it works?
https://www.bikeradar.com/mtb/news/article/rawland-cycles-launches-ulv-and-ravn-48176/