Figuring Out Fork Length For A Custom Long Bike
I’m planning a pseudo-long bike build. I want to have all the details worked out before I start getting dirty. I’m going to run a 19inch front wheel and the down tubes are going to be +4. I’m guessing the rake will be in the high 40's. Bikes I liked have been running about 12 to 14 inches over forks. It’s important to me that the frame sits level. I however have no idea how to figure this out before I order the frame and I don't want to order a custom frame only to have to cut it up when I can have them do it for me. So my question is how do I determine the rake and fork length so I can order the frame and forks? I have asked several people this question and I don't know if it’s a guessing game or a secret. I asked a guy who was riding a long bike and even he acted like he had eyeballed it. I don't want to guess. I want to use math. My bikes aren't just to look at.