In respect to carb modification and RPM control.
I have an RPM and hour metre that wraps on the ignition wire. Whats an optimal figure? Ive never actually bothered to check any of my older 2 strokes. Theyre all just ..Loud.
I have heard 2500 rpm is the optimal cutting speed but it may just depend on the type of motor and at what RPM the torque figure
peaks and the cutting width of the blades will effect blade speed.
The HP peaks on a 160 cc Victa 2 stroke at about 2700 rpm so cutting under load the rpm will drop a little.
Unless there is a problem with your Victa 2 stroke you shouldn't need a tacho / RPM meter as when the popet is fully open
the motor will probably still be under 4000 rpm.
My 4 stroke mower I set to 3200 rpm and when cutting long grass the speed drops to 2500 rpm.
Cheers
Max.
