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| SOS - Help! Diesel Engine Advice |
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Message |
    
palgrave
New member
Username: palgrave
Post Number: 2
Registered: 07-2009
| | Posted on Monday, July 06, 2009 - 04:27 pm: | 
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Can anyone help?
I have a Sabb 8hp single cylinder diesel in a 14 foot river launch.
I have fitted the engine with rubber engine mounts on the main engine brackets, and directly to the oak engine bed with the g/box mounts/brackets.
Engine and shaft run well, but the engine has a lot of vibration! And I am concerned that it may damage the shaft (direct couple to the prop shaft).
Can and should I fit the engine directly to the substantial oak frame to reduce the vibration? Would this reduce the vibration? Thanks |
boatbum
Member
Username: boatbum
Post Number: 19
Registered: 05-2006
| | Posted on Monday, July 06, 2009 - 05:19 pm: |
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Single cylinder engines are notorious for vibration. Most boats were designed around an engine, if yours is original I would think the rails were designed for the engine. Try finding a throtle position that creates the least vibration and run her there. Most older engines were directly mounted to the bed frame. |
palgrave
New member
Username: palgrave
Post Number: 3
Registered: 07-2009
| | Posted on Monday, July 06, 2009 - 05:33 pm: |
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Thanks for your feedback/advice. My boat had a S&T single cylinder petrol engine in her. I fitted the SABB last winter. She runs with less vibration at half throtle, so try to run her at that. Could I, and should I take out the rubber engine mounts, and bolt the engine directly to the frame, whould that help? |
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