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| Author |
Message |
    
Michael Trawler
Visitor
| | Posted on Monday, July 09, 2007 - 12:08 pm: | 
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I own a 1978 34ft Marine Trade Trawler DC with a single 120 Ford Leman I've been running at 1700rpm getting 7.5-8 kts.
what RPM should I be running at?
thanks |
greg lilienthal
Member
Username: glilienthal
Post Number: 6
Registered: 08-2006
| | Posted on Monday, July 09, 2007 - 04:56 pm: |
|
1700---1800 rpm,s regards greg |
captain William Myers 1
Visitor
| | Posted on Tuesday, September 25, 2007 - 11:49 pm: |
|
Michael
Run it at 75% of its total rpm. To find it run it at WOT for a short time 1-2 mins then figure 75% 1700 is good for fuel saving but to low to be 75%, and can hurt the engine not help it. |
Brian Brownell
Visitor
| | Posted on Saturday, October 13, 2007 - 10:28 pm: |
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Anyone have fuel consumption figures(gph) for rpm settings on ford lehman 120hp engines. Considering buying a trawler with the lehamn engine. Thx. |
Big Red
Visitor
| | Posted on Friday, November 02, 2007 - 01:00 pm: |
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I'm running the same boat; 1979 Marine Trader Europa with a 120 Lehman. I have been running @ 1750 rpms while only cruising at about 6 kts. The prop is a 4 blade 24 X 16. I have a spare 3 blade 23 X 16. Which prop should I use? I need another knot!
Thanks - Loyd |
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