Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which gear usually suffers synchromesh wear first?

  • A.First gear, which must synchronise the greatest speed difference and is therefore subjected to the most work
  • B.Second gear
  • C.Top gear, which is used for the greatest proportion of the distance travelled and therefore wears most rapidly
  • D.Reverse

Answer: B

Second is the gear most often selected on a downchange while the vehicle is still moving quickly, so its synchroniser does the most work. First is usually selected from rest, when little synchronisation is needed. A crunch into second on a downchange is the classic first symptom of a worn gearbox. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. Most errors here come from carrying across a result from a neighbouring case where it does not hold.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.