<VV> bearing noise in 1, 2 & 3, but not 4

[Sethracer at aol.com]

Written:
It sounds like the front transmission bearing to me as the input  shaft 
would be
spinning it under those conditions and not when the clutch is  down. but why
it would not make the noise in 4th is confusing.
 
 
I thought about this. Of course, in 4th gear the power stays in the main  sh
aft area. In the first three gears, the power travels to the cluster gear 
and  back again. It seems to me that the transfer of power to the cluster, 
all of  which goes from the input gear on the end of the long input shaft to 
the  front-most gear on the cluster, would cause side loading of the bearing 
on the  input gear. There would be no (or very little) side loading in 
fourth gear. That  seems like a theoretical answer to back up Dennis' experience.
 
Seth Emerson