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Old 08-09-2014, 08:00 PM   #104
stugray
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Quote:
Originally Posted by industrial View Post
From tom @ RL who balances engine rotating assemblies as a full time job.

http://www.rlengines.com/Web_Pages/C...Balancing.html

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Nice cut & paste, but we dont know who your were directing that at.

Even "internally" balanced engines generate vibrations since the reciprocating masses are not rotating perfectly co-planar (the rod journals are offset from one another).

This causes vibrations that can be partially nullified by a harmonic dampener attached to the rotating mass.

And I fully understand engine balancing as I paid extra for it to have my racing boxer engine balanced.
And even though a boxer engine is "internally balanced" they still wanted to balance the entire rotating mass as a unit, and did not balance the front pulley & FW separately (for the final balance)
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