If you don't mind, do you have the following: Full Load Displacement? Full Load Speed? Pitch? Brand / Style of Propeller?
Good news from a design / engineering perspective. It is a conservative approach and well within industry norms. As a side note, the corresponding...
If the shaft is a 3.5" diameter AQ22, the installed Safety Factor is 3.51. Or another way to look at it, for a recommended Safety Factor of 5.0...
That remains to be seen. Riding the keyway is still a possibility. Putting the key upside down with the wrong radius in the bottom of the keyway...
The vast majority of these breaks are due to a previous grounding incident, soft or hard. Cavitation is not the cause nor is whip, as the shaft...
Run it by Frank and Jimmies or some other prop shop, the fact that it is right at the end of the key way cut says it all. I have seen this exact...
That is a classic propeller fit / key way induced shaft break. The crack most likely propagated from the keyway, the break was clean and happened...
Since you are looking at cleaning up the existing system, go with an Ultra Bilge Pump Switch so you don't have to worry about a float switch...
Olderboater has that right, when comparing the two displacement varies by the cube (raised by the the third) 3 times the boat, effort and cost.
Looks like you have at least 2" of pitch to take out, this may be tough on old re-conditioned propellers. It would be good to work with a local...
Congratulations, the old girl has new legs, 17 knots with fin stabilizers, very nice!
Sweet, getting closer to enjoying the benefits of your comprehensive re-power work!
Good point on the chine walking description, what the OP experienced when the boat (unexpectedly) leaned to Port and stayed there or to Stbd and...
The vast majority of shaft breaks are all at the same point - a stress riser at the keyway fatigues over time and lets go. Could be age, prop/key...
Sorry, my bad, need to get the glasses checked! Swap em out like you proposed.
I like the on engine set-up as is. The metal canister makes sense being so close to the engine heat. What about a 20 micron MA500 closer to the...
Coast Guard passenger vessels absolutely need metal only Racor’s. It is a requirement to get a USCG certificate. Pleasure craft should use at...
Hopefully, yacht design will go back to creating the necessary machinery/treatment spaces first, then the appointments next as normal order of...
Now that is great owner/operator post :)
CAT has a brief discussion on the topic here: https://www.cat.com/en_US/by-industry/marine/USEPATier4FinalMarineEmissions/tier-4-faq.html I have...
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