The discussion revolves around the mechanics of a crankshaft system, specifically how forces from a piston affect the crankshaft's ability to turn. Participants explore the implications of force direction, torque variation, and energy expenditure in the context of an engine cycle, with a focus on understanding power losses and mechanical advantages in a custom application involving a cam and lever system.
Participants exhibit a mix of agreement and disagreement regarding the nature of power losses in the system. While some assert that there are no significant losses due to side loads, others highlight the complexity of torque variation throughout the crankshaft cycle, indicating that the discussion remains unresolved.
Participants reference specific angles, lengths, and forces, but the discussion lacks a clear consensus on the calculations needed to quantify losses. The interplay between geometry and force application is acknowledged but not fully resolved.
Individuals interested in mechanical engineering, particularly those focused on crankshaft dynamics, engine mechanics, or custom mechanical systems, may find this discussion relevant.
FeX32 said:No worries.
The torque is about the center of the crank. This is inclusive of the 5.25" moment arm.
Basically you can think of it as 164 lbf acting perpendicular to the crank arm at that 5.25" distance.