Two Stroke Design SoftwareExpansion Chamber Analysis & Design This is a complex return wave simulator that allows you to analyze an existing pipe or design your own for the desired powerband and top RPM. read more Porting Calculator Calculate the needed exhaust and transfer port durations to match the desired peak power RPM. This is not a rehash of the old outdated port time*area formulas but rather it relies on the true blowdown time (the time it takes for the exhaust pulse to go to zero pressure). read more Jetting Calculator Calculate the best needle, slide cutaway, and main jet for perfect air/fuel ratio thru the whole throttle range. read more Squish Velocity Calculate the exact piston/head squish band clearance needed for the right squish velocity for max power. read more Crank Balance Calculate the right size and placement of counter-balance holes in the crank wheels for less vibration. read more Yamaha Energy Induction System (boost bottle) Calculate the correct dimensions for the bottle to resonate right at the RPM range before the engine gets "on the pipe" which is when there is a bad power dip which the bottle counters. read more 2 Stroke Fuel/Oil Ratio Calculator Calculate the needed fuel/oil ratio dependant on your oil, type of riding, max RPM, and type of cylinder cooling. This uses my formula that goes mostly by the oils viscosity and viscosity index. read more Author: Michaael Forrest Email: 19jaguar75@gmail.com |