09-05-2020, 01:46 AM
We take for granted the huge improvements from balancer shafts. Back in the '70s and '80s we had XS650s and Triumphs and BSAs that shook badly. Now we have balancer shafts down to 250cc bikes. and in most 4-cyl cars. Open the hood of a Civic or Corolla and you can't tell the engine is running by looking except for the belt.
