In theory, understand it does a bit, Bob, at least in "primany-imbalance" supposedly. But of course, with the Hinckley Triumphs all having balance-shafts, it would be difficult to notice any difference in vibration between the "Modern Classics"(as Triumph calls their standard Bonneville line) and their "Crusiers".
As you probably know, the less the angle from 180 degrees(as in a "Boxer" BMW) the two pistons are moving, the more primary vibration a twin will have(without a balance-shaft, of course), thus causing the old "Triumph front wheel bogie" often seen when older Meriden Triumphs were started while setting on their centerstands, and why the engines of Harley's Dynaglide rubber-mounted models to their own version of this dance inside their frames while sitting at a stoplight.
It would be interesting to remove the balance-shafts of both Triumph models and see which would actually vibrate less, wouldn't it?!
Last edited by Dwight; 06/12/2007 2:26 PM.
