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By aussiebill - 13 Years Ago
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Guys, thought you might like to see marine y block from old 17" timber speedboat i had to resurrect from old pile of parts owner brought in. Prop drives from crank snout. Our best thoughts for all the people affected from the hurricane in the North of your country. 
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By pegleg - 13 Years Ago
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Bill, How does the drive work? belt?
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By aussiebill - 13 Years Ago
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pegleg (8/28/2011)
Bill, How does the drive work? belt? Frank, the crank snout has a coupling slid over it and pinned, then prop shaft has matching coupling, in this case its direct drive, no in or out, just turn it off to stop! the vee belt on flywheel is for alternater. Other style front covers have in/out clutch dogs to get nuetral. A pretty common era of boats here.
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By pegleg - 13 Years Ago
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Bill, Got it. There's no reverse then either. There must be 30 different styles of drives, we have some weird ones as well. Most included some form of transmission with a reverse gear. No clutches, just a gear engagement of some form. 
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By Hollow Head - 13 Years Ago
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And then Hamilton jet drives with reverse done by moving flap that changes the direction of water flow... 
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By Hoosier Hurricane - 13 Years Ago
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My uncle once had a small boat with an inboard putt-putt engine. You started the engine by spinning the flywheel. Whichever way you spun it, that's the direction the boat would go. No clutch, no gearbox. Maybe it was some kind of old military boat, I was a little kid when he had it.
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By aussiebill - 13 Years Ago
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Hoosier Hurricane (8/29/2011)
My uncle once had a small boat with an inboard putt-putt engine. You started the engine by spinning the flywheel. Whichever way you spun it, that's the direction the boat would go. No clutch, no gearbox. Maybe it was some kind of old military boat, I was a little kid when he had it.John, fond memories of those put puts, most little hire boats here had these simple 1 cyl pull start by belt motors, generally reliable until my mate pulled the magneto top off and half apart and lost little part through floorboard of boat! I had a few of these engines, Common one here were Chapman pups, and in 1 & 2 cyls in line etc. Seppo, cant beat the hamilton jet, I actually have old customer who was racing his Y Block powered hamilton jet flat bottom boat! up till a few years back.!! 
yyy
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By pegleg - 13 Years Ago
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neat subject! where was this Jet thingie made? That put-put looks neat too, it's fabricated water jacket looks like a piece of pipe! I have seen something similar to what John described, it was on a work boat used to repair docks and wharfs. Sounded like a John Deere, swimming 
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By PF Arcand - 13 Years Ago
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One or two cylinder boat engines were manufactured in British Columbia years ago, by a company called "East Hope". They were often found in Gill Netters.
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By aussiebill - 13 Years Ago
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pegleg (8/29/2011)
neat subject! where was this Jet thingie made? That put-put looks neat too, it's fabricated water jacket looks like a piece of pipe! I have seen something similar to what John described, it was on a work boat used to repair docks and wharfs. Sounded like a John Deere, swimming
Frank, the hamilton jet were from New Zealand and sporned the flat bottomed drag style boats that race around a really tight and twisting man made coures in only a foot or so of water, they have a navigator that just points at upcoming turns, theses are blown alcohol boats with big rollbars and hitting the banks and rolling over is just as common as race car spinning out. they race the clock.
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By Hollow Head - 13 Years Ago
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Like this? http://www.youtube.com/watch?v=P8xMLvkkxWc
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By aussiebill - 13 Years Ago
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[quote]Hollow Head (9/2/2011)
Like this?http://www.youtube.com/watch?v=P8xMLvkkxWc[/quote] Seppo. great isnt it!!!!
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By Hollow Head - 13 Years Ago
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It sure is. Would like to try that with twin turbo Y-block engine, if here would be places like that 
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By pegleg - 13 Years Ago
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[/quote] Frank, the hamilton jet were from New Zealand and sporned the flat bottomed drag style boats that race around a really tight and twisting man made coures in only a foot or so of water, they have a navigator that just points at upcoming turns, theses are blown alcohol boats with big rollbars and hitting the banks and rolling over is just as common as race car spinning out. they race the clock.[/quote] Oh, Oh, OK. About ten years ago they had those races on our Speed Channel. Those things are Unbelievable. Makes motorcycle racing look like a Poker Tournament.
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By GREENBIRD56 - 13 Years Ago
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After watching them in action on the tube a few times - I'm convinced that a "sprint-boat" (?) would be way more fun to own than a jet-ski.
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By snowcone - 13 Years Ago
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I am assuming they run the same classes in USA as Australia, but I think a Y Block might be out of the question.
The mainclass is 400 sbc, with the entry class at 350 sbc.
Never seen a Ford in any of them around here
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By aussiebill - 13 Years Ago
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snowcone (9/5/2011)
I am assuming they run the same classes in USA as Australia, but I think a Y Block might be out of the question.
The mainclass is 400 sbc, with the entry class at 350 sbc.
Never seen a Ford in any of them around hereGary, the y block one existed!!! and raced years back here as i supplied the engine parts for it! Obviously with progress just like historic car racing, they dont mix the old with the current regulated cars, same in boats! I have been looking for jacks ph # but his old number is no longer current, thinking about it he may well be dead by now, he was elderly when i met him and had raced these for years, here and in NZ. Shame! as the last of the pioneers fade into the sunset.
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By snowcone - 13 Years Ago
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There were Y blocks years ago in our prop driven circuit boats, but I have never seen one in a jet sprint boat.
My Dad used to race Y blocks in his boat, but I ran sbc in all my race boats.
Mainly because hi performance Chev parts were readliy available and the Cleveland Ford was
too heavy and the Windsor Ford (SVO) too expensive
One of the fastest boats back in the old days was Jo Blo.
It had a supercharged Y block and went like the clappers, but as happens, the driver got himself killed pushing it too hard
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