Carter 650 Boost frame

Here's the first frame to feature the wishbone seat stays I am sourcing from Tange through the Merry Sales company. It is my first foray into designing my own tubes and these came out exactly as I wanted. The difference between these and ones I have used in the past is that they have a longer tapered section and are unmitered so that I can build everything from a 26" fatbike to  a 29er. No other wishbone seatstay hsa offered me the range of uses as this one and I am happy to say that there's a good supply of them available. 
 

Here's the best view of the wishbone tubes. They are single bend out of the box and I add the second bend at the thin end.