I was reading about your sprockets, etc for the rear chain. On our Pro Stock Sportster based dragbike, we had a "bottle gear" for the rear. It was a sprocket on a piece of thickwall Chromoly so the spline for the tranny was one one end and the sprocket on the other. THen we had a 3/4" thick aluminum plate on solid 1" aluminum stanchions that spaced the plate out to the right level to get past the car tire. THe opening in the bottle gear tube on the sprocket end housed a big thick bearing to support the far end of the bottle gear. We would launch this at about 8,000 rpm, shift at 9,000+. I made damn sure the rear axle was in line with the rear of the frame to the 001" so it would always launch straight. I machined the rear parts/pieces so it was all straight and true so all measurements were correct. We used stock Sporty oil pump for a year and then my partner (he was the rider and the $$)got sucked into a dry sump system and it was a comedy of errors for the eight horsepower it was supposed to be good for. I safety wired EVERYTHING! It took a while to put together but we never had anything come loose. Looks like from your pics you are taking your time, doing a great job. Make sure if you have to change sprockets for a different ratio you will still have room between tire and oil tank. Will the tire grow? We had batteries, oil and fuel and fuel pump all in front of motor down low. Built a fairing from aluminum first then carbon to cover all this and give good aero chracteristics. It looked like a Busa kind of from the front with fairing in place. Friday in snowy Ohio
