Originally posted by Eric2004
So what is the purpose of having a NS and a MT version of the engine. Since both have same piston and sleeve set. The stroke is still 14mm.
The factor that change the stroke value is the distance between the center of crankpin to the center of the crakshaft, which equals 1/2 stroke. So a 14mm stroke will have the center of crankpin to center of crankshaft of 7mm. one complete revolution will move the conrod up and down 14mm. Am I right.
So in order for the new long stroke engine to have longer stroke, the distance bw crankpin center to crankshaft center must be change although the conrod may remain the same length!!
yes in order to have longer strok-needs to move pin out on 0.125 mm of center why it was done, realy good question!!!!
it doesn't change tramendosly anything, that changes which happened are nothing.
strok and conrod length is changing conrod ratio, it is very important value, but again, on tht particular engine it is so small, so it will not change anything. I was thinking about it, for while and it come to my calculation, that only one thing can be realy impacted vacuum value on induction cycle, but again, I didn't find to much difference ( but it was greatest change on that design)