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#1
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that looks familiar!!!!!
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#3
03-09-2011, 07:19 AM
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Yamaha 150 4 stroke
Took ours out for first time on Saturday. I agree it does push it great. We got 46 mph (gps) without stretching the rpms out. I will play around with it a bit more this weekend.
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#4
03-09-2011, 08:40 AM
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Quote:
tsu gets 44 MPH @ 5100 RPM using 2.32 MPG ssir gets 42 MPH @ 6000 RPM using 2.4 MPG So Tsubaki is going 2 mph faster while using less gas and less rpm (wear and tear) on his engine. Ssiredfish, if it were me I'd put a 19P on your engine and give it another shot. I think you would definately benefit from the added pitch. 
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer 1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer 1996 V21 w/1993 200HP Mercury on a Shoreline Trailer All towed by a 5.7L Hemi Durango. If God didn't have a purpose for us we wouldn't be here, so Live simply, Love generously, Care deeply, Speak kindly. (Leave the rest to God)  Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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#5
03-09-2011, 09:20 AM
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It would be a better comparison if tsub were running the 17 pitch prop but looks to me like ssir is getting around 4 mpg at cruise while tsub is getting around about 2.7 mpg.
__________________
 1994 Wellcraft V21
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#6
03-09-2011, 12:53 PM
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I was about to comment on this one. The overall fuel burn for the 4-stroke is much better. Ssired fish, congratulations on the new power. TSU, that is lazy on the RPM, the 17 may help your mileage. Both sound great to me. If I were to cruise around the best I see is 2.5MPG. Most of the time the 250 2-stroke averages ABOUT 2MPG all around. Less is possible. The price to pay for cheap HP.
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#7
03-09-2011, 01:24 PM
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5100 is a tad low, but not bad for a 60 degree EAGLE looper. They don't like to turn more than 5500-5600 as they are built pretty heavy inside for commercial type useage. 4 strokes do best at lower RPM's, at WOT a 4 stroke isn't that much better on fuel burn than a 2 stroke, maybe 10% better. At idle though they can be up to 400% better.
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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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#8
03-09-2011, 01:24 PM
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Yeah RR I get about 2.5 with my 150 2 stroke.
__________________
1994 Wellcraft V21
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#9
03-09-2011, 11:21 PM
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My mech. wanted me to even try a 15x19 but that particular 150hp states it needs to ride at 5800-6000 WOT which is what I ended up with. I was back and forth and got about 10 people(companies) to prop it out and 14.25 x 17 came up from four of em. I love the looks of the top end capabilities with this combo(boat/eng/prop) but I MOSTLY fish offshore and SELDOM get to ride WOT. This configuration will best suit what I believe my needs are which are an efficient, above-average cruise speed while maximizing range.
Oh, did I mention I had an authentic seatrail?????? NE 15-20kts. 1.5ft in the river!!!!! I got gas to burn, what can I say????? ALMOST FINISHED(yeah, yeah, I know, its never finished)!!!!! CAN'T WAIT TO GET THEM PICS UP!!!!!!!!
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