Engine tuning
I have been looking for arcticles on tuning engines to understand the best way to get the most power from a Nelson Q500 engine. In Canada we race Q500 with a Nelson short stroke engine with an exhaut that has the inner pipe removed. This tames the engine down a bit I am told taking a few thousand RPM off of the peak. I beleive that since the engine was designed to run a pipe the timing of the engine is less than optimal when not using the pipe, so given that assumption what can be done to get the best performance from the engine under this new operation. It seems to me that some of the faster engines have a different sound, perhaps my imagination but then again maybe no, perhaps others have found the right set up tht may include more than propellor selection.
Is there an arcticle that describes engine design and how to best tune the engine for peak racing performance?
Kevin M