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Old 03-12-2014, 09:43 AM   #19
gadenors
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City: thisted
Vessel Name: Elviva
Vessel Model: trawl/tug Ejvind 25
Join Date: Mar 2014
Posts: 36
Quote:
Originally Posted by Tad Roberts View Post
I would avoid the high RPM (3600-4000) Yanmar and look seriously at the Beta (Kubota) 60 or 75. These engines put out the rated power at 26-2700 RPM, much closer to the speed you actually use them at. I think it might be (used to be) less money than the Yanmar.

betamarine - Engine View
Like Tad Robert said, I fully agree. The Beta 75 HP. 3.3 litre, I like to add: Paired with at Deep red.ratio i.e. 3:1, from a PRM. hydraulic or a ZF gear, will give a efficient push for the Sundowner 30 TUG.-and low noise, comfortable running, at pleasant 1800/1900 rpm.
_ do not only look at HP.but more for a real TORQ, to swing a big propeller.
Trawler/Tugs want/need that kind of propulsion...!

The US.Beta people (by Stanley), gives good proffesional help.
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