Design Your Own 50ci Engine: Balancing Crankshaft

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Designing a 50ci straight 4-cylinder 2-stroke engine requires a solid understanding of crankshaft balancing, which is crucial for performance and longevity. Key factors include piston weight, rod weight, and dimensions, with technical knowledge being essential for proper design. Many successful amateur engine builders have achieved results by adapting existing designs rather than starting from scratch. Resources such as Wikipedia and specialized engine tutorials can provide valuable insights into balancing techniques. Proper guidance and formulas are necessary to ensure a well-functioning engine design.
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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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