Bear makes a 48" supermag recurve.
But I have to agree with Arthur and even go beyond what he mentioned. For me, nothing less then 62" for a recurve and nothing less then a 66" for a Longbow. My draw is 29" FWIW. I actually love the length of my 70" Schulz longbow, and 68" Brackenbury recurve. They are the smoothest drawing bows that I have.
ATA? No axles on trad bows.