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Re: jetdrive bow thruster
Re: jetdrive bow thruster -- sailorglenn	Post Reply	Top of thread	Forum

Posted by: randykimball ® 11/12/2006, 16:56:13 Author Profile eMail author Edit

It is not about size of nozzle or pressure.. it is about pounds of water moved in what time, (equal and opposite reaction). This figured against the weight of the boat or bow area and the resistance to move through water (sideways) compounded by the cross current you want to be able to fight. I'd almost figure on using what ever amount of water I could afford to draw in from the keel and thrust at either starboard or port bow. .... that is where you are going to be when you are done... you may need all you can afford in an emergency situation. ... that is your REAL answer. If a 4 HP motor did it before, than 4 HP will do it again, add a HP for flow through your pipe system... making it 5 HP for good measure. A 4 HP pump is going to do 4 HP worth of water moving work... a 4 HP motor driven prop is going to do 4 HP worth of water moving work. You can do a text book worth of calculations if you wish, but when you are done this is still where you will be. The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them. Modified by randykimball at Sun, Nov 12, 2006, 16:57:26

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