Originally Posted by
keithtsr
What pushed me to Rossi in the 80's was snapping Webra crank shafts. I can't remember whether they were 17mm or 15mm but I broke 5 or 6 of them before they increased the size of them. By then, factoring in the Dyna carb and the snapping cranks I was done with Webra.
I'm very happy where I'm at now with the Rossi!
Oh yeah.....I remember that now.
It didn't happen to me but I heard about some broken rods that were caused by the piston being too tight at the top when new...
On new true ABC engines like the NR I always take the plug out then put some castor in the cylinder and rotate the shaft with a drill just to give it a head start especially If it is a bit too tight.
Likely with todays CNC mfg the tolerances that can be easily held will make the above nonsense a thing of the past.
Dave