Bad vibration

Don't know why it shows fifteen times. I did do some searching for boat terminology, went for a nice mountain bike ride before it got hot, crashed on the way down and spent the rest of the afternoon in the clinic. So I did not get a chance to get to the boat.

As far as the boat goes i just need to go thru the steps to eliminate the possibilities. Hopefully shoulder is better by next weekend

Thanks Rob

Figured out what was going on. Will try to explain with proper terminology. The vibration was coming from a SS shaft collar at the transmission side of the flax nut that goes on the stuffing box male end. Thinking someone may have added this to prevent the flax nut from backing off. The collar had two SS bolts as set screws. Ea. screw was an 1 1/2" long. 1/2" would have been sufficient. The set screws were not safety wired. The noise we heard directly before the vibration was one of the bolts coming uncorked and hitting the hull or floor. The other set screw was about 4 revolutions from doing the same. One set screw remained spinning on the shaft. Replaced with much shorter set screws and safety wired them. Test ride was vibration free. Thanks for the help from all of the replies

Pete, I read somewhere to use two set screws in each hole to lock them in.


Is that correct?

ononewheel wrote: Pete, I read somewhere to use two set screws in each hole to lock them in. Is that correct?

Seth,
That is certainy an option but, due to the wall thickness of the typical set collar, the set screws need to be real short. I'd prefer to see some blue locktite on a single set screw in each theaded hole.