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Conference vicki::boats

Title:Powerboats
Notice:Introductions 2 /Classifieds 3 / '97 Ski Season 1267
Moderator:KWLITY::SUTER
Created:Thu May 12 1988
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1275
Total number of notes:18109

825.0. "Spectrum boats and Force outboards" by PFSVAX::MATSCHERZ () Thu Apr 18 1991 17:41

    I have a question,
    
      I have a 85 hp force motor on a Spectrum 1706. I am wondering how
    fast it should be able to go. Also will the speed increase with some 
    tuning of a different prop or anyway that anyone knows to increase the 
    speed. Currently it has a top end of around 35-39 depending on trim,
    weight etc.
    
    					Thanks for any help
    				(John Dixon using Steve Matscherz's
                                                                account)
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825.1I have a 1706 W/50HP forceCSCMA::LEMIEUXFri Apr 19 1991 10:3313
    
    	Hi,
    
    		How do you like the 1706? I have one with a 50HP force.
    	I get 30MPH out of it with just me and standard equipment and
    	2 six gallon tanks on board. I was considering the 85HP but
    	if all it will increase my speed to is 35-39 MPH I probably
    	won't bother. I don't ski with it, just fish and Scuba once
    	in a while.
    
    		What year is your boat? mine is a 1989.
    	
        P
825.2Force your Force faster!CSOADM::HALLMon Apr 22 1991 22:2012
    You didn't mention what the pitch is on your prop, that could make a 
    difference in your top speed. I have a 17foot Maxum (fiberglass) with
    an 85 hp Force and can go 35 mph with 2 other people and ski gear,
    which I guess is around 1900-2100 lbs. I have a 15 pitch prop on the
    motor now. If you have a tach on your boat check the RPMs at say 30mph.
    Talk to your dealer about trying a higher pitch prop and check the RPMs
    again at 30mph and top speed under similar water conditions as before.
    be carefull to not over rev your engine while trying props. Any loss
    in holeshot might be corrected by a whaletail or Doel-fin type device.
    
    
                                                       Mike H.
825.3MTCLAY::GALLOWed Mar 09 1994 14:369
     Any more comments on Spectrum Boats and Force engines 
       would be appreciated. I was going to look at a new
       18ft bowrider with a 90H.P.
                                   
      
    Thanks                   /    /
    Mike G.       ^^^^^^^<<#######@^^^^^^^^^^^