Re: [Amel Yacht Owners] sea wather from bow-thruster
Bill,toggle quoted messageShow quoted text
I agree, the bow thruster is a really great design. IMO, it is vastly superior to the tunnel type thrusters due to the larger diameter, slower turning (more efficient, more thrust). I also like the fact that when it is retracted everything is protected. I am hoping that the bottom paint will be pretty effective in controlling marine growth. With a high speed in tunnel thruster I have found it hard to keep paint on the blades. Henri Amel had a lot of vision I think.
I gave the gearbox of my bow thruster a really good flushing with white spirits. There was a slight amount of milky oil and rust in the very bottom. I replaced the prop shaft lip seal and refilled with fresh oil but so far I have not replaced the bearings. The thruster sounds good when run in both directions both before and after the servicing but I noticed that it felt a little rough when I turned the shaft before the oil was replaced. With the boat out of the water, the prop takes more than 3 seconds to spin down. I could not feel any play at all in the prop shaft, laterally or in and out. I would like to replace the bearings as you suggested but am hoping that I can get another 3 months out of what are probably the originals. Can you advise based on this information whether you feel I should change them now, or go one more season?
The foam seals have all been replaced and they have a lot more compression than the old ones.
Good point about releasing the tension on the halyards. I actually removed all of the sails for storage so the tension is just enough to control slapping.
I note that my boat has a powerful adjuster on the main permanent backstay. Is this to make it easy to add tension to reduce forestay sag or to make detensioning that stay easy when the boat is not sailing?