okbeast Posted May 22, 2007 Report Posted May 22, 2007 Can anyone explain this. I know the long-rod is obviously a longer rod but wouldn't that accomplish the same thing as the extra stroke? Or is the extra 5mm from the longer rod "negated" by the shorter blaster pistons? Quote
dawarriorman Posted May 22, 2007 Report Posted May 22, 2007 The stroke of the engine is determined by the distance between the pin (where the rod mounts to), and the center of rotation of the crankshaft. If that pin is 30 mm from the center of rotation, that means that from TDC to BDC the total stroke is 60 mm. Move that pin 2 mm further away, and you increased the stroke 4 mm. The length of the rod doesn't matter to the stroke, it only determines how far away the piston will be. The benefit to a longer rod engine is that it lessens the rod angle and helps to relieve stress. Quote
Fireroad Express Posted May 23, 2007 Report Posted May 23, 2007 the longer rod also decreases wear on the piston by reducing the angle of the rod by moving the pin closer to the top of the piston. Quote
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