Re: curiosity has got me
I have been wondering what is the difference between an MR leg and an alpha?
from reading a history of the alpha1 drive.
the 1-MR was in 1985. 1 year only. it had "new reverse spiral cut lower unit gears. the gears used to draw together under load, now they are force apart under load. the drive shaft bearing (below the water pump) was changed and a threaded retainer was added to hold the drive shaft bearing cup in position.
near-net forged gears
and a ''a'' stamped on the end of the propshaft to be able to tell the difference from an mr vs. the r drive.
apha1 came out in 1986. it's similar to the 1-mr. and a name change."
the info is from another iboats member who posted up a history of the alpha1 drive. the read was called alpha drive unit history. no idea who originated it.
