Okay using the trusty ole sawzall I cut the notch out for the sprocket
here's another angle on the sprocket and the notch cut. Any questions or need different views let me know. This weekend I tended to work and forget to get the as I go Pictures.
More on the build. Here you see I am seting up the brake system. These are not new brakes but some I had and want to try on this build.
here is an overall view of the brakes and rotor. Yup its a big rotor but the bigger it is the less force needed to stop it. It is a motorcycle rotor redrilled to fit the MCP brake hub. Everything is setup so the rotor hub is against the bearing hub and I put a slit collar outside the brake hub to hold it all in place. The caliper is bolted to the frame with a couple shims between it aqnd frame to align it to the rotor.
Here you can see the clearance between caliper and tire. Tire 19 inches from center of frame. Thats the outer sidewall.