Hello! I have a Bavaria 390. 1991. I need to change the upper and lower bearings of the rudder. Does anyone have the dimensions or drawings of these bearings? To make them.
Sincerely yours!
We have a B38 Lagoon and have replaced the rudder bushes.
They aren't roller bearings on ours, they're 'Delrin' bushes, and run directly on the rudder stock.
I didn't have the dimensions either.
So we removed the rudder and the old bushes. then very accurately measured the diameter of the rudder stock at the top bush position, it was about 50mm, and then at the lower bush position, it was about 100mm if I remember correctly.
Then I did the same on the inside diameter of the rudder stock tube and the top bush carrier.
A micrometer is absolutely necessary to get this right.
'Derlin' comes in rods of various diameters, just buy two suitable lengths that have a diameter larger than required.
I then had a local machine shop machine the 'Derlin' very accurately to size.
Bear in mind that the OD of the bushes has to achieve an interference fit, but I suppose if you didn't think it was tight enough you could cheat and apply some 'Sikaflex'.....
That was 10 years ago and about 8000 miles ago, there is no sign of wear so far...
.........Good Luck.....Bill.
