Originally Posted by ManUnitedgt2
im new to the hobby. I did a good break in. i just dont know how to tune it for performance. i check out that tune bible, but if not does anyone know how many turns it is for high speed needle to be tuned.
Each motor will tune differently, even though the same motor design.
Make sure you have a nice long stretch of smooth road or parking lot to top out on. If you cannot shift in 150' of run either the engine is not revving high enough or the 2 speed is adjusted incorrectly.
If you hear that you are max rev'ing the engine and it will not shift in to 2nd gear then you need to adjust the 2 speed clutch. Read the manual for this adjustment so you are aware of how the 2 speed clutch works and which set screw to adjust. It is very easy to adjust the 2 speed and you do not have to remove it from the chassis.
If you need to make adjustments to the HSN you will want to only make small turns... Think of a clock and tune by changing hours.... not 1/4 or 1/2 turns...
If you are running really rich you will have a significant amount of excess fuel spitting out the exhaust pipe. Temps are somewhat important but I personally tune to sound. Do not exceed 270 degrees F.
If you are new to gas and are unsure of what you are doing... Seek help from the local hobby shop or a local racer...