The stuffing box hose on my boat(a contessa 26) is shot. I have dis-assembled, pressed in a new cutlass bearing and am ready to order a new hose, I have a problem. The stern tube and stuffing box "tube" are different dia's.
The pic above is my stuffing box assembly.
The left side of the assembly resembles the stern tube in that they both have a lip and a tube that is smaller in dia than the lip.
- The stuffing box tube(seen above) is slighter bigger than 1 1/2 inch dia. The lip is 1 5/8 dia.
- The stern tube is 1 5/8 dia and it's lip is slightly smaller than 1 3/4 dia.
So I have a problem. I can buy stuffing box hose 1 3/4 dia which fits the stern tube but will be a loose fit on the stuffing box tube. If I can find hose with an inside dia of 1 5/8's(my local supplier can't) I have trouble getting it onto the stern tube. In theory the hose could be heated and pressed onto the larger stern tube but IMHO this is asking for trouble.
What to do??
Below are just thoughts, please feel free to point out the really bad idea's
1) But a new stuffing box tube that will work for a 1 3/4 dia hose. Any idea where I can get one. It must work with a 7/8's shaft.
2) Build up the dia of the stuffing box tube with some fancy tape to allow a 1 3/4's hose to fit.
3) I have a metal lathe at home and would consider doing the following. Turn off(remove) the lip on the stuffing box tube. Buy some delrin, drill and turn it to fit over the tube to build it up to the correct size. This would include turning in a lip. The delrin would be held in place with two grub screws threaded thru the delrin into the original bronze tube.
This assumes I can find delrin in a size that works for this purpose. Finding bronze tube would be even harder to find I suspect.
For what it is worth I have no reason to believe that this assembly is not original to the boat. My father bought the boat in 1999 from the original owner. Up till 1999 the boat saw light use. Dad never replaced the hose.
I can tell you that I suspected that this would be a problem as I pulled off the old hose. Visually the two ends looked different sizes. How the builder was able to get this to work is beyond me, but it did work(till now)
Unfortunately I had to pretty much destroy the old hose to get it off so I can't take accurate measurements to determine what it's size is.