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Tuan, in your article "Engine Package I: Cam Timing, Rod Ratio, Port Size" you go indepth about rod/stroke ratios. I have a question about that:
Lets say, in a 1.58:1 rod ratio, what would be the angle (not crank degrees) of a rod, at 90 crank degrees ABDC or ATDC, to a rod (vertical line if ya wanna use that instead....a little more possible in this hypothetical crap I'm posting) at BDC or TDC. I'm trying to get the angle of the rod, that has a low rod ratio, when it is being pushed up/down the cylinder at 90 crank degrees. I want to see what kinda angles (with one leg being the rod at ABDC OR ATDC rod and the other leg being the rod at BDC or TDC or a vetical line) that are causing this extra friction in the cylinder when a low rod ratio is being used. Would these angles be relative to all rod ratios regardless of rod length and stroke length so long as the ratio was the same?
Lets say, in a 1.58:1 rod ratio, what would be the angle (not crank degrees) of a rod, at 90 crank degrees ABDC or ATDC, to a rod (vertical line if ya wanna use that instead....a little more possible in this hypothetical crap I'm posting) at BDC or TDC. I'm trying to get the angle of the rod, that has a low rod ratio, when it is being pushed up/down the cylinder at 90 crank degrees. I want to see what kinda angles (with one leg being the rod at ABDC OR ATDC rod and the other leg being the rod at BDC or TDC or a vetical line) that are causing this extra friction in the cylinder when a low rod ratio is being used. Would these angles be relative to all rod ratios regardless of rod length and stroke length so long as the ratio was the same?