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A delta pad makes a flat surface towards the back center keel line of the boat for an outboard to have a surface to ride on. Works great on a fast bass boat or something like that. Some of the early jets were built that way before they realized that the rounded bottoms worked much better in a jet boat for loading the pump. They can be made to run pretty good. It's just a lot easier to make a fast boat run and load the pump right with a rounded bottom. If it's a boat that runs under 70 MPH, it probably don't make that much difference.
 

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From what I was told, they had used the Delta pads on everything from outboards to stern drives and on jets as an attempt to improve the out of the hole performance and lower the planing speed on modestly powered powerboats. They seem to have really gained in popularity when the states started imposing the 35MPH lake speed limits and the fuel crunch...

They really did not "add" to the performance of the boat as far as the everyday 60 MPH cookie cutter, but when heavily modified had detrimental effects as far as high speed stability (read; chine walk)..

I totally agree with Duane on the "no worky on the jet hull"...:)devil

I have seen a couple of Bahner jets with the Delta pad and they do seem to stay on plane at a lower speed, but really never noticed anything else that would make me desire a hull wiith a pad.

GT :)hand
 

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nope, you're good, that's a round keel;) loaders diggin alil deep though, might wanna do something bout that
 

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If you did have a Delta pad, it would use a flat intake and would look something like this, the red area would taper off as it got toward the front more (about 5-6')....





GT :)hand
 

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Discussion Starter · #8 ·
Thanks Glenn:)devil






nope, you're good, that's a round keel;) loaders diggin alil deep though, might wanna do something bout that

I was always wondering how do you know or what do you go by.. I really want to start setting this boat up this next week.. Lots of test runs and what nots.

Gonna try some runs with a droop with ride plate then some without and i really want to try a snoot to.

maybe i should start with a rock grate ? and change out that loader.
 

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Thanks Glenn:)devil
No problemo!;)






I was always wondering how do you know or what do you go by.. I really want to start setting this boat up this next week.. Lots of test runs and what nots.

Gonna try some runs with a droop with ride plate then some without and i really want to try a snoot to.

maybe i should start with a rock grate ? and change out that loader.
I always start with a factory style rock grate to get a baseline...Otherwise you don't know what changes actually hurt and which help..Just the way I roll...:)devil

GT :)hand
 

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IMHO "right and wrong".

Delta pads create 'false rocker', and that makes the hull ride with a 'nose up' attitude. This makes the strakes 'attack' the water at a greater attack angle. (LIFT) Some builders/racers used them on hulls that did not require them, or hulls that could not use them correctly. "Loading the pump" is easily done with a TEAR DROP in front of the intake. (for drag racing) Much of the problem lies in the use of a delta pad on hulls that have shallow V sections (deadrise) This 'false rocker' causes the water from the center to HIT the outer chines and cause 'tail lift' at higher speeds. I know because I set up a 440" injected Chevy BB, Berkeley jet, in a Hondo Pantera 17' 10" hull. It ran 109 MPH and was suffering the 'tail lift' at those speeds, back in 1985. I'd like to see a 1 degree pad on a Rodgers boat, I think it would run very well. Big wide pads do suffer unloading in rough waters, but narrow (enough width for the weight) pads do not.
 

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i'm interested in hearing more on the delta pad, my boat has one, 1981 Baker custom boats, gps around 67 and mild bbc power. how fast can it go before i see a loss as far as vs. a round keel. cool floor in tho.
 

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From what I was told, they had used the Delta pads on everything from outboards to stern drives and on jets as an attempt to improve the out of the hole performance and lower the planing speed on modestly powered powerboats. They seem to have really gained in popularity when the states started imposing the 35MPH lake speed limits and the fuel crunch...

They really did not "add" to the performance of the boat as far as the everyday 60 MPH cookie cutter, but when heavily modified had detrimental effects as far as high speed stability (read; chine walk)..

I totally agree with Duane on the "no worky on the jet hull"...:)devil

I have seen a couple of Bahner jets with the Delta pad and they do seem to stay on plane at a lower speed, but really never noticed anything else that would make me desire a hull wiith a pad.

GT :)hand
"No worky on a jet hull"hil:) I ran 93 MPH on mine. :)sphss
 

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"No worky on a jet hull"hil:) I ran 93 MPH on mine. :)sphss
Just don't turn and you'll be cool, it will probably step out like a estranged wife that hit the Lottery.;) Most setups will work OK in a straight line, not always the case with a family boat....

GT :)hand
 

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Just don't turn and you'll be cool, it will probably step out like a estranged wife that hit the Lottery.;) Most setups will work OK in a straight line, not always the case with a family boat....

GT :)hand
Any one who turns at top speed, whether it's a Delta Pad or Rounded Keel, deserves to get wet.
 

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my boat turns on rails but if you get to askin for it, it will spin out
 

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a droop did nothing for me except kill my hole shot but i could damn sure chine walk with the best of'm at full trim:p
 
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