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#425756 - 07/30/08 11:35 AM Re: Thoughts on This Prop? [Re: deepv]
deepv Safety Officer Admiral Registered: 03/17/04 Posts: 6678 Loc: SoCal	And seabuddy's closing statement: Originally Posted By: seabuddy From another thread on tabs... seabuddy Admiral Registered: December 15, 2002 Posts: 23829 Online I see Bennett fully adjustable tabs offered on the internet for roughly $425. That is for a way over-size 12" by 12" size. You could go so oversize and have killer control if you take care and make others take extreem care when using such powerful sized tabs on your size boat. Bow down on take off, side to side, lift one side to better take a quartering sea, adjust for a heavy crew member on one side, nose down to take a chop, help hold the bow where you want it for ride altitude, when you want it there... kind of control ...(and you retract them while underway up and out of the way when you do not want their impact on your boat). That is cheaper than a top prop price to me. And more bang for the buck, too. BTW, always check that you get everything and the return policy when you buy. Top Reply Quote Quick Reply Quick Quote Notify Email Post #329528 - July 19, 2007 05:26 AM Re: Another question about stern lift [Re: seabuddy] Dave R Dave R Admiral Registered: July 30, 2003 Posts: 4531 Loc: Raymond NH Offline +1 on the Bennett trim tab recommendation, even if you go with smaller tabs, you'll be thrilled with the results. I LOVE mine and won't own another planing boat without them. I found these in 15 seconds: http://cgi.ebay.com/ebaymotors/BENNETT-M...sspagenameZWDVW _________________________ "Mischief Managed" 2000 Regal 2550 LSC 7.4 MPI Bravo 3 _________________________ 72% of fatal boat accidents are caused by boaters that haven't taken a safe boating course. 2001 Sea Ray Sundeck 190 5.0 EFI Alpha I,Generation 2 2002 4x4 LB Lariat CC F250, 7.3PSD
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#425758 - 07/30/08 11:37 AM Re: Thoughts on This Prop? [Re: deepv]
deepv Safety Officer Admiral Registered: 03/17/04 Posts: 6678 Loc: SoCal	So now the question becomes hydraulic tabs or new prop? Both are going to be about $400 to $600. _________________________ 72% of fatal boat accidents are caused by boaters that haven't taken a safe boating course. 2001 Sea Ray Sundeck 190 5.0 EFI Alpha I,Generation 2 2002 4x4 LB Lariat CC F250, 7.3PSD
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#425804 - 07/30/08 01:57 PM Re: Thoughts on This Prop? [Re: deepv]
Bankonit27 Admiral Registered: 09/08/03 Posts: 1223 Loc: Geneva, Illinois	Gotta weight the options. It sounds to me like you are trying to improve water sports ability, which in my mind the prop helps more than the tabs. I would say the tabs are more for adjusting the ride and attitude while running, especially on a 20' boat. BTW, I have heard good things of the Rev 4, for similar applications. _________________________ 1999 Crownline 266BR Mercruiser 7.4L MPI B3 pulled by a 2003 Ford Excursion
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#425814 - 07/30/08 02:24 PM Re: Thoughts on This Prop? [Re: deepv]
athiker Admiral Registered: 12/02/03 Posts: 2454 Loc: Lake Norman, NC	Originally Posted By: deepv So now the question becomes hydraulic tabs or new prop? Both are going to be about $400 to $600. My 2c would be hands down go for the tabs for the same money. You will guarantee results and can adjust those results as needed where with a prop change I'm guessing the change will be more subtle and it will be what it is...no fine tuning. You aren't having trouble getting anybody up and out of the water during watersports are you? Aren't you looking to plane better while towing a slower speeds? The only wildcard is wake shape as mentioned in the quote above...and not being a high-end wakeboarder, I can't really comment on that. Its true w/ the adjustable tabs you can raise them all the way if they negatively affect the wake, but then pulling a wakeboarder at under 20 mph is probably when you want to use the tabs for planning purposes. A 4 blade might accomplish that and keep the wake I guess...I just didn't have that much change when I went to 4 blade. I did not go w/ a high-end SS 4 blade though and maybe the one I used had too much rake. _________________________ 2000 Cobalt 206 5.7L EFI Alpha 1 photo 1999 Isuzu Trooper LX
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#425817 - 07/30/08 02:28 PM Re: Thoughts on This Prop? [Re: athiker]
deepv Safety Officer Admiral Registered: 03/17/04 Posts: 6678 Loc: SoCal	Bankonit27: Is that the Merc Revolution 4? athiker: The only trouble getting someone up out of the water is ME! My son pops up right away and it's quick. I come around he grabs the rope and I keep going... As soon as there's tension he yells GO and he pops right back up. One concern is the shape of the wake after installing tabs. It seems that MadDog was not pleased with the post-tab wake shape. _________________________ 72% of fatal boat accidents are caused by boaters that haven't taken a safe boating course. 2001 Sea Ray Sundeck 190 5.0 EFI Alpha I,Generation 2 2002 4x4 LB Lariat CC F250, 7.3PSD
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#425818 - 07/30/08 02:28 PM Re: Thoughts on This Prop? [Re: deepv]
deepv Safety Officer Admiral Registered: 03/17/04 Posts: 6678 Loc: SoCal	I am thinking of making the prop change first. _________________________ 72% of fatal boat accidents are caused by boaters that haven't taken a safe boating course. 2001 Sea Ray Sundeck 190 5.0 EFI Alpha I,Generation 2 2002 4x4 LB Lariat CC F250, 7.3PSD
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#425839 - 07/30/08 03:19 PM Re: Thoughts on This Prop? [Re: deepv]
Bankonit27 Admiral Registered: 09/08/03 Posts: 1223 Loc: Geneva, Illinois	Yep Revolution 4. You may want to find a shop that works with you, to find the right fit. Or start with an inexpensive one like WM did. While there are some hard and fast rules with props, you need to find one with the best feel. Each of the props will have different feels, if that makes sense. AT, did you use an aluminum? _________________________ 1999 Crownline 266BR Mercruiser 7.4L MPI B3 pulled by a 2003 Ford Excursion
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#425841 - 07/30/08 03:24 PM Re: Thoughts on This Prop? [Re: deepv]
deepv Safety Officer Admiral Registered: 03/17/04 Posts: 6678 Loc: SoCal	Just got of the phone with the owner (Doug) of Elite Marine were I get my service done. He's got a loaner program and I am going to borrow an Alpha 4, 4-blade Al 14x16 to test out up at Big Bear next week. He says that my current 14x19 3-blade SS Vengence is a fine prop for top end speed to zip across miles of Lake Mead without over-reving and that an Al prop will be just fine for what I am attempting do do which is not go balls out at 45mph but rather low speed water sports and I won't be busting the bank either. I will be picking up the loaner Saturday to go check it out. Heck I could even get a 14x18 for lower elevations and have two props for the price of one. _________________________ 72% of fatal boat accidents are caused by boaters that haven't taken a safe boating course. 2001 Sea Ray Sundeck 190 5.0 EFI Alpha I,Generation 2 2002 4x4 LB Lariat CC F250, 7.3PSD
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#425865 - 07/30/08 05:42 PM Re: Thoughts on This Prop? [Re: Capn Morgan]
deepv Safety Officer Admiral Registered: 03/17/04 Posts: 6678 Loc: SoCal	Originally Posted By: Capn Morgan Apollo Some of these have vent holes in SS, some do not. It depends on the size and # of blades you go with for your application. No plugs for the vent holes available, as these run better without plugs. Those are available on line for around $280 shipped. Not bad. So maybe I test a prop for free and then order an Apollo on line for less. Hate to do it but I B.O.A.T at this dealer last winter and he said they'd be $525 plus shipping (he doesn't stock them) from him. That's a LOT of gasoline right there. _________________________ 72% of fatal boat accidents are caused by boaters that haven't taken a safe boating course. 2001 Sea Ray Sundeck 190 5.0 EFI Alpha I,Generation 2 2002 4x4 LB Lariat CC F250, 7.3PSD
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#425867 - 07/30/08 05:51 PM Re: Thoughts on This Prop? [Re: deepv]
D-Rod Admiral Registered: 06/25/05 Posts: 7542	Sorry, haven't read your whole post. Will later. But I would go with a 16" pitch 4 blade if you're only getting 4500 at WOT. A 18" pitch will yield the same 4500 or so RPMS (less slip). 16" should get you to 4700/4800, which will help your hole shot. Secondly, i'm not a fan of venting props. Go drive a DP or B3 drive and see how much they slip during holeshot. Not much. Yet, they have plenty of power. It deals with the lift/bite factor. Slipping a prop is wasting power. A 5.0L is plenty of power for a 20ft boat. I think you want to buy the prop that has the ut-most grip and stern lift (to keep the bow down).
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#425869 - 07/30/08 05:52 PM Re: Thoughts on This Prop? [Re: deepv]
seabuddy Admiral Registered: 12/15/02 Posts: 28862	Why are you back to Alum?
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#425871 - 07/30/08 05:57 PM Re: Thoughts on This Prop? [Re: D-Rod]
deepv Safety Officer Admiral Registered: 03/17/04 Posts: 6678 Loc: SoCal	EDIT: seabuddy: Cost? But it looks like that might not be such a big a deal as I thought as indicated in my post quoting Capn Morgan. D-Rod: I don't want to over-rev accidentally and spin a rod or something like that though. This boat weighs a lot for a 20 foot boat. Something like 3800 pounds, dry if I recall. Edited by deepv (07/30/08 05:58 PM) _________________________ 72% of fatal boat accidents are caused by boaters that haven't taken a safe boating course. 2001 Sea Ray Sundeck 190 5.0 EFI Alpha I,Generation 2 2002 4x4 LB Lariat CC F250, 7.3PSD
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#425873 - 07/30/08 05:59 PM Re: Thoughts on This Prop? [Re: deepv]
seabuddy Admiral Registered: 12/15/02 Posts: 28862	Alum somehow is an rpm limiter?
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#425876 - 07/30/08 06:01 PM Re: Thoughts on This Prop? [Re: seabuddy]
deepv Safety Officer Admiral Registered: 03/17/04 Posts: 6678 Loc: SoCal	No, just cost. But I suppose the flex of an Al prop vs SS would cause a bit more slip... I'm thinking of a SS Apollo now... _________________________ 72% of fatal boat accidents are caused by boaters that haven't taken a safe boating course. 2001 Sea Ray Sundeck 190 5.0 EFI Alpha I,Generation 2 2002 4x4 LB Lariat CC F250, 7.3PSD
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#425877 - 07/30/08 06:02 PM Re: Thoughts on This Prop? [Re: seabuddy]
D-Rod Admiral Registered: 06/25/05 Posts: 7542	I think you're engine is safe to 5200 rpms or so. You should plenty of cushion to protect against over-revving? Have you driven a boat with a DP drive? You should do that before purchasing a new prop. I think it will give you pointers in what you WANT the new single prop to be able to accomplish.
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