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Thread: 10' cougar set up
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07-30-2013, 12:05 PM #1Junior Member
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10' cougar set up
Trying to get top speed of 35 mph! 1984 10' cougar cub step hull w/ 1969 merc 200 20hp, long shaft, 20" transom motor lifted 1" engine tilt 4th position {best speed} 1st run 25 mph 5800 rpm engine running ok but slightly rough. Replaced engine wiring, kill switch, plugs, points, set points & timing w/ dial indicator 180°, timing @ .300 full throttle & max @ .360 btdc. carb jet .071, adjusted throttle cam/linkages, using 100 octane fuel w/ quick silver syn oil, engine starting & running perfect now. Tried other props 2 blade brass15p would not plane off, 2 BL stnl 13p cupped slow plane 27 mph 4800 rpm, 3bl alum 13p 28 mph 5300 rpm. Any suggestions I want 35 mph.people say they hit low 30's w/o any effort.
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09-19-2013, 09:43 AM #25000 RPM
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I guessing the long shaft is the problem. I run a 25 HD Merc with a 15" lower that sits on the transom. If I remember correctly the hub should be even with the sponsons. Go to little boats under 20 there are a lot of guys there posting there cubs .Mine is hanging from the rafters in my garage been 25 years since it seen water lol.
THE BEST PART OF LIFE IS SPENT ON THE WATER
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09-30-2013, 10:12 PM #3Junior Member
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Yeah I believe i need to find short shaft also, last run with 2 blade alum 11 pitch running 31 mph @ 5500 rpm. thank u for input.