So I used Lee's two RAD measurement calcs and am getting wildly different values. I am 5'10" and have short legs and pretty short arms.
Backstory: I dropped enough weight during covid to gift myself a new FS bike. I am coming from a 18" 2014 hardtail with 120mm RS Revelation fork. I demo'd a Revel Rascal from from Velorangutan about a month ago and while I liked it ok, I didn't love it and had some lower back pain. Two weeks ago I tried a medium Ripley and really liked it. Set a bunch of PRs on a 18 mile ride along the SATN and everything about the bike felt really good. It made me want to push and I felt solid on the bike The only issues I had with it was that maybe my sit bones were at the end of the seat, but I didn't have any discomfort, and that the cranks seemed shorter than what I am used to which made it seem harder on climbs when I got out of the saddle. Harder in the sense that I was pedaling quicker revolutions which kinda tired me out.
This weekend, I tried the large Ripley and went on the same ride. I had stayed up too late the night before the ride and was almost 1mph slower. The bike felt ok but again, I didn't love it. Swapped it out for a large Occam with the big Fox 36 up front (150mm?). It was a big bike that I liked, but didn't love.
I then saw this thread and used my height to calculate my RAD from my height, and ended up with a 445 RAD. This made perfect sense since I felt really good on the medium Ripley which has a 450mm reach and the large has a 475mm. The large Occam is 474. I dived a bit deeper with the Level II RAD calculation by measuring my "knuckle height" and the "neutral" RAD came in at 480, which makes the large bikes the "better" fit. I am not sure whether I should go with my gut or that since I have been on bikes that are too small for me for so long, I do not know how "right" should feel.
Any ideas?