On my 31 Commander I have 4” from the end of my shaft coupler to the end of the fiberglass shaft log. Not enough room for the standard Buck Algonquin packing assembly. I can trim the hose end by a few barbs. What is a minimum length for the hose connection at the shaft log?
top of page
bottom of page
As long as you can get 2 hose clamps completely on both ends of the hose, and just a tad of space between the log and stuffing box barbs so they don't touch , you should be fine
John
Are you referring to the Buck Algonquin “self aligning” PG125G 1.25” box? My shaft logs were completely rebuilt new tubes etc. The box mentioned had to be cut to fit in my 31’ with F engines. It is preferable to cut the box and or tube before the hose length in my opinion since a longer hose allows for greater flexibility to compensate for small alignment errors <0.003” such wheel vibrations or shaft errors.
I thought maybe they adjusted things after my boat… guess not my 31 is hull #1 out of the Tennessee plant. I cut the packing tube off a littlebefore the second rib. I will cut the shaft log tube to allow a 1/4” gap between the log and packing box and about 3/8” gap between the male and female parts. I will have about 2-3/4” shaft log inside the hose
What year 31'? My '74 is one of the last three built here in Holland, has bronze shaft logs. The engines are moved forward almost to the bulkhead. My friend's '69 has fiberglass shaft logs, and engines well aft compared to mine.
My 31 Commander is1968 hull #1 out of the Tennesse plant. Your shaft log is totally different. From the transmission flange face to the shaft log I have 6”. No room to even reach the thru hull raw water intake. I am installing a Buck Algonquin 00PB125G. What engines do you have? I have a pair of 350 W 230 hp engines.
The Sport Cruiser had a lot more room to move the engines forward - plus, they put 427s in some of them. When they moved the engines forward (the express cruiser was discontinued at that point), they had to reduce the engine angle from the traditional CC 16 degrees which required a modification to the hull design and different struts. The engines forward had better weight distribution and a more efficient shaft angle.
My 72 31 Express had the spud type stuffing boxes with the 350 Qs.
I will take a few photos tomorrow for everyone. One commentvwas the fiberglass shaft logs were not a standard length. I bought an inside pipe cutter on Amazon. I had a profesional version when I was contracting. Will send a link on this item.