ORIGINAL: advanced builder

My second upgrade is a CMB .21 VAC ,now I can get my pipe down to 8-71/2" That will hep in RPM department. I was stuck @ 9 1/2" due to the rear exhaust. The .21 VAC is front exhaust. I had high torque. I need RPM. I have run Zippkits custom 1450 mod prop. It's been a good prop for 3 years running. I may not be able to turn it with a shorter pipe. Today's weather felt like we are on our way to better weather. Running time soon. Our club will have 4-5 JAE Zippkit riggers running this season. Joe's .21 rigger kit is a big hit in our side of the woods. The 45 JAE is coming on strong. Now that will be fun,cky. I have a bunch of painting to do. Better weather I can open the garage up and work. We all have hulls to test. soon.