The Truth About Crossplane Twin Cylinder Engines

TLDRUnderstanding the misconceptions around crossplane twin cylinder engines and debunking claims made in a popular YouTube video.

Key insights

🔑Primary engine balance is determined by the piston, while secondary balance is influenced by the connecting rod

🚀The 270° crossplane inline twin engine has better primary and secondary balance than the 285° inline twin engine

💰The claim that manufacturing 285° offset engines is more expensive is unsubstantiated

🎯The 285° inline twin offers a more regular firing interval, resulting in a slightly smoother operation

👥Perceived differences in smoothness between KTM and Yamaha engines can be attributed to balancing shafts

Q&A

Which engine, the 270° or 285°, has better balance?

The 270° crossplane inline twin engine has better primary and secondary balance than the 285° inline twin engine.

Is it true that manufacturing 285° offset engines is more expensive?

The claim that manufacturing 285° offset engines is more expensive is unsubstantiated.

What is the advantage of the 285° inline twin engine?

The 285° inline twin engine offers a more regular firing interval, resulting in a slightly smoother operation.

Why do some people perceive KTM engines as smoother than Yamaha engines?

Perceived differences in smoothness between KTM and Yamaha engines can be attributed to balancing shafts.

Are there any significant performance differences between the 270° and 285° inline twin engines?

There are no significant performance differences between the 270° and 285° inline twin engines due to their crankshaft configuration.

Timestamped Summary

00:00In this video, the misconceptions around crossplane twin cylinder engines are addressed and claims made in a popular YouTube video are debunked.

08:46Primary engine balance is determined by the piston, while secondary balance is influenced by the connecting rod.

09:26The 270° crossplane inline twin engine has better primary and secondary balance than the 285° inline twin engine.

17:37The claim that manufacturing 285° offset engines is more expensive is unsubstantiated.

19:11The 285° inline twin offers a more regular firing interval, resulting in a slightly smoother operation.