Design Your Own 50ci Engine: Balancing Crankshaft

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SUMMARY

The discussion focuses on designing a 50 cubic inch (ci) straight 4-cylinder 2-stroke engine, specifically addressing the complexities of crankshaft design. Participants emphasize the importance of understanding formulas related to piston weight, rod weight, and size for proper crankshaft balancing. Resources such as Wikipedia's article on engine balance and technical tutorials from AdvTech Consultants are recommended for foundational knowledge. Successful amateur engine designs often involve adapting existing components from established designs.

PREREQUISITES
  • Understanding of 2-stroke engine mechanics
  • Knowledge of crankshaft dynamics and balancing techniques
  • Familiarity with piston and rod specifications
  • Basic engineering principles related to rotating and reciprocating systems
NEXT STEPS
  • Research crankshaft balancing formulas specific to 2-stroke engines
  • Study the physics of engine cylinder bank angles
  • Explore advanced tutorials on engine design from AdvTech Consultants
  • Analyze successful amateur engine designs for practical insights
USEFUL FOR

Engine designers, mechanical engineers, hobbyists interested in custom engine builds, and anyone looking to deepen their understanding of 2-stroke engine dynamics.

Foamy_Man
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Hi, I am going to design my own 50 ci engine, straight 4 cylinder 2 stroke. I know nothing about how I should go about the crankshaft... Very few drawings so far, can anyone guide me on any formulas i should use to figure out what i need, based on piston weight, rod weight and size, etc...
 
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You need some real technical knowledge to do any of this properly .

Having said that though some amateurs have designed and built engines which worked successfully . Usually by copying and adapting components from other peoples designs .

What have you done so far ?
 

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