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#1
08-16-2009, 01:36 AM
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Re: stern heavy
If you're referring to the little trim skeg as absent, a 200 Merc 2-stroke definitely creates considerable steering torque especially w/o hydraulic steering. The tab won't solve your porpoising but it may help counter that dive to port quartering a swell...those little tabs have amazing influence, the final say you might say, almost like a second rudder
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there's no such thing as normal anymore... 
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#2
08-16-2009, 09:24 AM
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Re: stern heavy
when you say black max prop,i have a 1981 black max 150 with a 3 blade alum prop.is this the prop you are talking about.
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1971 seacraft 20 1976 seacraft ma
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#3
08-16-2009, 01:34 PM
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Re: stern heavy
It may be. The Black Max was a motor name given to some of the Merc V-6s.
The Black Max propeller is an aluminum prop designed for aft heavy apps like stern-drives, good chance that one came with that 150. It is a classic blade that offers unmatched stern lift in a 3 blade. It has very little rake and cupping and is easy to turn. Quicksilver's equivalent prop is called Black Diamond. My understanding is that the prop used to be available in stainless... I believe Propco still makes them in stainless and PowerTechs MQF and MQS (MQS for your motor) series are also the same shape with slightly different pitches. The Black Max is everywhere for around $100 -130. Chances are that your other prop is just that. Swap em out and see but be careful that you don't over rev as the prop on the 150 likely has a lower pitch than the Laser II but if its a 19 pitch and compatible, try it out. And definitely get a trim anode on there. Good luck.
__________________
there's no such thing as normal anymore...
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