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09-28-2008, 02:50 AM #16
I'm glad part of this post was deleted.
V-king jet boat
Seadoo speedster 200 310hp
Hole shot http://s5.photobucket.com/albums/y16...t=MOV00922.flv
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09-28-2008, 03:11 AM #17
Sounds like your having fun getting her going. Thats awsome your right into the boating scene. Dont take things to heart. This is the best high performance boating site on the net hands down as mentioned. I think the best thing ive noticed on hear is theres a lot of world champions, High points Champs,world record holders, Extreamly fast boat Manufacturers ect.That post every day on hear. Your attention grabbing 60mph thread then only posting 40 is,well,You Know what I mean. You seem like an enthusiactice fellow boater keep up the good work and lets see some pics man!Pics are always sweet!
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09-28-2008, 08:32 AM #18Rob Lankford
1988 20' Action Marine 2.4 200
Previous owned boats worth mentioning
1976 17' Action Marine 2.4 200
1984 20' Action Marine 2.5 200
1983 17' Hydrostream V-King 2.4 Bridgeport
2003 LPB STV RR COPY 2.5 280 /300 Drag
2005 LPB STV RR COPY 2.5 280
2005 Baja 23 Outlaw 6.2 Mercruiser
2006 FTP Quarter Shot T3 Race 2.5 200 CARB/2.5 225 PROMAX
2009 FTP Quarter Shot T3 Race 2.5 280
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09-28-2008, 08:49 AM #19
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09-28-2008, 08:51 AM #20
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09-28-2008, 08:55 AM #21
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09-28-2008, 09:00 AM #22
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09-28-2008, 09:08 AM #23
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09-28-2008, 09:12 AM #24
Yeah, that would have been a better title. If you want to know why it is unlikely just ask and I will explain the problems you will have to overcome.
You are making a good start in high performance boating, but you seem to be choosing the long route of learning each part from personal experience rather than other's.
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09-28-2008, 09:14 AM #25
Alright Jonny boy, what will I have to over come??
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09-28-2008, 09:26 AM #26
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09-28-2008, 09:28 AM #27
Fun....Its all good.Just posting my humble opinion
Rob Lankford
1988 20' Action Marine 2.4 200
Previous owned boats worth mentioning
1976 17' Action Marine 2.4 200
1984 20' Action Marine 2.5 200
1983 17' Hydrostream V-King 2.4 Bridgeport
2003 LPB STV RR COPY 2.5 280 /300 Drag
2005 LPB STV RR COPY 2.5 280
2005 Baja 23 Outlaw 6.2 Mercruiser
2006 FTP Quarter Shot T3 Race 2.5 200 CARB/2.5 225 PROMAX
2009 FTP Quarter Shot T3 Race 2.5 280
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09-28-2008, 09:30 AM #28
wow compleatly over my head,
must be some rap videogame about bicycle daredevels, been busy in bigboy world i guess.
most overnite successes usually take at least 10 years
Certified turd polisher,
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09-28-2008, 09:44 AM #29
(1) Propellor availability. Since motors the size you are using aren't generally used at the speeds you are trying for, no one makes a prop for your goal. Even bending the max pitch available won't get you over 50 mph. Look at your current pitch, max motor rpm and gear ratio; find a speed/prop pitch calculation and put in your data with about 20% slip. The motor is going to max out and not just rev forever ... don't get it in your head that you can just call up 10,000 rpm because you want it. Realistic max rpm might be 6,000 or so.
I hope you've already learned that props can only be altered about 2 inches of pitch from their produced base pitch. Some props are already stretched to be finished at the additional 2 and won't go any farther. There are 2 ways to overcome this ... finding a prop shop that can cut the blades off and competently reweld them on at a steeper angle or finding a prop with the desired pitch and some how adapting it to your shaft.
(2) Possibly around 50 mph with the altered prop you will hit the "hp available vs hp needed for load" intersection. These are a pair of exponential curves that come at each other very quickly at the end. The next problem comes from how much motor the boat will float vs how much power is needed to go faster.
(3) Stability. The boat is not going to be stable at your goal speeds. You might see the goal speed just as it spits you out.Last edited by Mark75H; 09-28-2008 at 09:47 AM.
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wolfgangb liked this post
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09-28-2008, 11:00 AM #30
Last edited by xr1million; 09-28-2008 at 11:07 AM.