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Posted: Mon Apr 02, 2012 12:20pm

Post Subject: hydraulic drive

am building a pair of 35` boats and considering fitting using hydraulic drive either via trad prop or l drive,any info would help including regulations for use of hydraulics on water


Posted: Mon Apr 02, 2012 5:16pm

Post Subject: hydraulic drive

As far as I know there are no specific regulations for hydraulic drives. You will have to be aware that they can spray a lot of oil about in the case of a leak. You can buy an all in one system from marine specialists or make up your own with off the shelf components. Be aware that many hydraulic motors are not equipped with thrust bearings to transfer prop thrust to the case. Without it the motor will have a very short life. You will also suffer an efficiency penalty but exactly how much will depend upon the type of pump and motor you select. Tony Brooks

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