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69068Re: [bolger] Re: MICRO TRAWLER

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    Nov 16, 2012
      Good points Susanne. Also consider that automobile engines typically only run @ about 20% of rated max HP around 80% of the time (coasting, idling at the stop light, flat terrain cruising etc). 

      On the other hand, when you consider hull drag, prop thrust and friction, marine engines are constantly going uphill towing a trailer and are designed accordingly. My recommendation is a 4 stroke outboard until you get into larger boats where a diesel inboard makes more sense. 

      From: "philbolger@..." <philbolger@...>
      To: bolger@yahoogroups.com
      Sent: Fri, November 16, 2012 4:57:13 AM
      Subject: Re: [bolger] Re: MICRO TRAWLER


      Every SUBARU engine is a flat -4 or -6 - and always water-cooled.

      Ultimately for the horsepower to get MT up on a plane no power plant will as light for the power as an outboard by the time you add up gearbox, shafting, propeller, pivoting of prop etc.

      Susanne Altenburger, PB&F
      ----- Original Message -----
      From: nezih
      Sent: Friday, November 16, 2012 3:35 AM
      Subject: Re: [bolger] Re: MICRO TRAWLER


      Any picture of the Engine,you saw in Fort Lauderdale in a Dunebuggy shop.
      Highly appreciated
      ----- Original Message -----
      Sent: Friday, November 16, 2012 4:24 AM
      Subject: Re: [bolger] Re: MICRO TRAWLER


      I read someplace that the engine designer was an airplane designer. It sure looks like and airplane engine. Back in the 1980's somebody built a water cooled aluminum block to bolt on to the crank case in place of the air cooled jugs.  They also had water cooled heads for it. I saw one of the engines in a Dunebuggy shop In Fort Lauderdale. That engine might well make a nice boat engine.  

      On 11/15/2012 09:00 PM, Mark Albanese wrote:

      Yeh, it was great to have it and the transaxle balanced atop a rolling jack. The heat is what burned the valves out. I expect in a boat one may also seem pretty loud.

      On Nov 15, 2012, at 11:49 AM, Douglas Pollard wrote:

      What the engine had going for it was it could be dropped out for rebuilding in 15 minutes.  Usually the valves were burned and new rings needed the lower end bearings and crank held up well... ...I would think it would make a far better engine for an air boat. In this case it can be standing above the boat where it can get free air circulation.  

      On 11/15/2012 12:52 PM, nezih wrote:

      Yesterday,I have been informed that boat builders here are installing old VW Beetle Engines(after marinise)
      as Inboard Engine.They are not heavy,like outbards.I think this engine eliminates the weight problem of other
      Inboard Engines
      Awaiting comments.

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