Alberg 37 International Owners Association Discussion Forum

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Information about engines and props

Name: John Hughes
EmailAddress: jfh@cs.brown.edu
Category: General/Other
Date: 19 Mar 2004
Time: 10:39:28
Remote Name: 82.225.49.106
Remote User: jfh

Comments

I'd like to collect some information about engines and props. If you've got a boat in the water, and have a little time to check this (or can do it decently from memory) can you send me this information? I'll tabulate and hand it off to Tom to put on the web page somewhere for the benefit of future owners. Send me your answers at jfh@cs.brown.edu, and once I get a dozen or so, I'll put 'em all in a spreadsheet or something and send them off to Tom A. --John Hughes -------------------------------------------------------- Engine type: Rated HP: Rated RPM: Xmission type, including ratio: Prop type (fixed, folding, other): Prop number of blades: Prop diameter: Prop pitch: Can you run engine in "forward" at rated RPM (ca 3400 for Westerbeke 4-107 for instance) without overheating/smoke? At what RPM do you reach 6 kts (in flat water or light chop)? What is your top speed? What is your top (non-overheating) RPM? Other remarks: -------------------------- I'll begin with my own answers (which are not very satisfactory) Engine type: Westerbeke 4-107, ca 1970 Rated HP: 37 Rated RPM: 3400 Xmission type, including ratio: Paragon SA-1D, 1:1 ratio Prop type (fixed, folding, other): fixed Prop number of blades: 2 Prop diameter: 13 (I think) Prop pitch: 9 Can you run engine in "forward" at rated RPM (ca 3400 for Westerbeke 4-107 for instance) without overheating/smoke? No At what RPM do you reach 6 kts (in flat water or light chop)? about 1500. What is your top speed? 6.2 kts maybe What is your top (non-overheating) RPM? 1800 maybe Other remarks: Vibration is a major problem for me, despite new engine mounts, a new shaft, and various other things. At 2000 RPM I get smoking and overheating.


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