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D525
Joined: 16 Dec 2007 Posts: 14
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Posted: Fri Jul 24, 2009 7:38 pm Post subject: Steptech vs Delta |
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Hey everyone,
Looks like this post has gotten a little stale (like a few others) so here is something for you guys to kick around...
Looking at building a small (16ish) sport, but I am unsure of what kind of bottom to run with. Thinking about stepping away from the norm (sport jet power) and run an ecotec 4cyl.
Currently have a 21 step and love it, but will a delta give me better shallow water capabilities then a small v? Or is it worth stick with a v?
???[/u] |
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Forplay
Joined: 15 Sep 2008 Posts: 85 Location: Leduc, AB
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Posted: Mon Jul 27, 2009 9:04 pm Post subject: |
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My understanding is that the delta's have more surface area in contact with the water from the less angle non-stepped V, thus they can run in shallow water - at a slower speed than a steptec.
You lose some top end speed from the design with more hull contacting water, and they are looser/more slip in the corners at speed with that flatter bottom. Kinda like that part though ..
My two cents worth anyways .. |
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Rapid Transit
Joined: 20 Jun 2005 Posts: 206
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Posted: Tue Jul 28, 2009 3:34 pm Post subject: |
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foreplay ... you have hit the nail on the head , in my opinion, and I own a 17 ft delta v8. a steptec simply draws more water at slow speed and will not be able to follow a delta if they have to slow down below 35 mph
d525 ... what pump are you going to drive ? do you have enough torque?
I have watched some 16 ft delta bottom sportjets , they look like fun, and , these guys used to have steptecs |
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D525
Joined: 16 Dec 2007 Posts: 14
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Posted: Tue Jul 28, 2009 9:19 pm Post subject: |
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The small ecotec runs about 250hp and 240-250ft-lbs of torque with 90% of that available just off idle. Thats why I think it would make a great little ripper. The economy of the little four stroke looks pretty impressive too, with adjustable mapping on the fly.
Not really sure what pump would be a good match for it though? Thinking it would be nice to put an AT 309 so I could swap parts between boats. Have also heard alot of good things about the hammy. So who knows.
I think I will have to try and take a delta for a rip. Probably the way to go. See if i can get use to a slider instead of a slicer.
Thanks for the input guys! Keep it coming! |
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Rapid Transit
Joined: 20 Jun 2005 Posts: 206
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Posted: Wed Jul 29, 2009 4:20 pm Post subject: |
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is ecotec the brand name of the engine? is this the engine that Roger Keyhoe is using? |
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ntjetboater
Joined: 15 Jun 2005 Posts: 401 Location: Land of many rivers
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Posted: Thu Jul 30, 2009 10:49 am Post subject: |
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yep and yep.
GM ecotec and in Kehoes shallow water units
Also I have a delta on my slider;however I wouldn't really consider it a slider as it cuts hard when you want and need it to. _________________ If you ain't hittin bottom you ain't jetboatin! |
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Itsworthit
Joined: 15 Jun 2005 Posts: 432 Location: Whitecourt
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Posted: Wed Aug 26, 2009 3:04 pm Post subject: |
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If I ever get rid on my 17x sport I'd get a delta pad on my new 17, no question |
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