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#1
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To wonder about those specific differentials..............1996 engines, same year V21:
Evinrude 150hp fuel burn at 4,000 rpm.........WOT top speed (41mph) and fuel burn rate. Evinrude 200hp same Evinrude 225hp same Most of us see about 39-42mph top speed with carb'd 150hp outboards. That lines up well with the Wellcraft spec data. 
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#3
06-21-2012, 01:53 PM
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From the data I've read, the most fuel efficient 2 stroke 150hp outboard today is the Mercury Opti Max.
So, assuming it's likely 30 % more efficient overall, it bumps the cruising range from 125 miles to 162 miles..........still way short of the advertized 230 miles. Maybe as poster stated - the I/0 yields close to that efficiency/ range.
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#4
06-21-2012, 06:15 PM
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The 96 specs with a 200 MERC lists the range as 178 miles which is about right I would say for a 200 and figuring 60 gallons of fuel. http://wellcraft.com/index.php/resou...IG_V_21_96.jpg
The 150 OPTIMAX would increase your range pretty significantly though probably pushing you out to the 230 miles or so.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD  AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664 
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#5
06-22-2012, 12:24 PM
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I have an '07 150hp Yamaha 4-stk. My full load is around 3,000lbs. Thats 4 heads, Ice, tackle BUT excluding the 400lbs of fish I bring home
 .At typically seas(2-3') and cruise(28-32mph) Im getting between 3.2-3.6MPG. That puts my range in at 180-201mi. Now same conditions with light load Im in around 212-230mi..... -BUT- My buddy had a 175 4-stk Suzuki on a 21' Pioneer CC. We would make 170mi on 45g's......pretty impressive  . Although our soakin wet clothes added a few more lbs to the load......
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- The charm of fishing is that it is the pursuit of what is elusive but obtainable, a perpetual series of occasions for hope. Lucky Jack - .......The Surprise is not old; no one would call her old. She has a bluff bow, lovely lines. She's a fine seaboat: weatherly, stiff and fast, very fast, if she's well handled. No, she's not old; she's in her prime. 85' Wellcraft 20 Fisherman "Guale Girl" 1979 Alumnacraft 14 - STILL got holes in it 2006 WS Tarpon160f - "Mudd Butt"
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#6
06-22-2012, 01:39 PM
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Quote:
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#7
06-22-2012, 02:26 PM
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Quote:
__________________
- The charm of fishing is that it is the pursuit of what is elusive but obtainable, a perpetual series of occasions for hope. Lucky Jack - .......The Surprise is not old; no one would call her old. She has a bluff bow, lovely lines. She's a fine seaboat: weatherly, stiff and fast, very fast, if she's well handled. No, she's not old; she's in her prime. 85' Wellcraft 20 Fisherman "Guale Girl" 1979 Alumnacraft 14 - STILL got holes in it 2006 WS Tarpon160f - "Mudd Butt"
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