Re: Is it normal for the drive shaft to move in an out by half an inch??
What engine? Can you post a picture? Not too sure what you mean by 'Driveshaft'... if you're talking about the crankshaft then no, definitely not normal- if even possible...
Or are you driving an alternator with the propshaft?? unusual but I suppose it's possible but rpms would be rather low.... Even so that shouldn't move in and out either..
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)