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plavutka 06-22-2020 07:25 AM

Maybe hull upgrading with nice pad kell?

26 Outlaw Bad Influence 06-22-2020 10:32 AM

Is the 200 hp = 10 mph linear or exponential. 20 hp per mph?

When you say upgrading hull with nice keel pad, are you saying upgrading this hull with a “larger” keel pad, or upgrading to a hull with a larger keel pad? I suspect there are several factors that play into a fast hull. I just don’t have the design background to know what those are. I’m sure weight is an issue with any hull design, and I’m looking at any way to reduce that. Of course, that’s limited to “don’t touch the wife’s toilet or shower holding tank.”

26 Outlaw Bad Influence 06-22-2020 10:54 AM

I’ve also read a little on CG (center of gravity) and loading your boat. One article said weight aft as much as possible, but others weren’t so definitive or clear. An aircrafts CG is identified at design, and can be determined by weighing. The CG is also based on known equipment distribution, and can be recalculated if equipment is moved, added, or removed. I would think, as in aircraft, that CG affects the boats attitude/AOA (angle of attack) and as such hull performance at any particular time. I’m not aware of any published CG for my boat, and don’t really know anything about the affect AOA has on speed, but I’m sure it does. Seems probable there is a sweet spot where the perfect angle of attack results in best speed. I’ve read some about prop shaft angle and trim tabs, and how both affect thrust, drag, and AOA, but it’s still murky to me. Add to that waves and wind, and I’ve got a lot to learn to get the maximum performance my boat is currently capable of. I’m feedback, especially on CG, is appreciated.

BIGSLOW 06-22-2020 11:09 AM


Originally Posted by 26 Outlaw Bad Influence (Post 4744641)
Is the 200 hp = 10 mph linear or exponential. 20 hp per mph?

When you say upgrading hull with nice keel pad, are you saying upgrading this hull with a “larger” keel pad, or upgrading to a hull with a larger keel pad? I suspect there are several factors that play into a fast hull. I just don’t have the design background to know what those are. I’m sure weight is an issue with any hull design, and I’m looking at any way to reduce that. Of course, that’s limited to “don’t touch the wife’s toilet or shower holding tank.”

The hull design of the outlaw is not an efficient hull design is what they are telling you. There is nothing wrong with it, it is just how it was built. Other hulls are more efficient and allow for more speed with the same power, these hulls have steps, pad, and notch. You would be money ahead if you leave your current boat stock and buy a different boat if you want to go faster.

plavutka 06-22-2020 11:30 AM

https://www.google.com/url?sa=i&url=...AAAAAdAAAAABAD

https://mbgforum.com/topic/7573-hull-pad/

https://www.screamandfly.com/content...ee-Hull-Faster





Baja Rooster 06-22-2020 01:12 PM

The Outlaw is a great all around performance boat and much friendlier for family outings than some of the faster hulls. It can be done but not really by incremental improvements as the factory got it pretty right to begin with.

I have a 272 with a nearly identical hull and have gone down this road. Smitty got his 272 almost over 100mph but I think it took 1200hp or so. Speed can be had, but this is what you’re achieving.

https://cimg2.ibsrv.net/gimg/www.off...417ed3145d.png

87MirageIntruder 06-29-2020 04:56 PM

I just went through a similar dilemma but I have a 28 Nordic Heat. The 496HO is a great engine stock, but when you modify it you better do it right or it won't hold together. There's not much you can do with it as far as "one step at a time" mods to build on. It's pretty much all or nothing. So, I decided to go all in and rebuild it with forged internals and a Whipple supercharger system. Doing everything myself I was still over $12k into it. Next step is beefing up the Bravo X drive, and that's another $$$ story.

hoodoo 06-29-2020 05:54 PM

[QUOTE=26 Outlaw Bad Influence;4744650]I would think, as in aircraft, that CG affects the boats attitude/AOA (angle of attack) and as such hull performance at any particular time. I’m not aware of any published CG for my boat, and don’t really know anything about the affect AOA has on speed

your right to a degree, but aircraft generally have a narrower “sweet spot” when it comes to cg’s and are less forgiving speed wise and control wise if you violate the published cg.
i think with a boat it’s about minimizing the wetted surface and still be “flying” level.
so you need a hull that wants to lift and enough power to lift it. as stated by others, your easiest gain in speed is picking a hull designed for speed.

Keith Atlanta 06-29-2020 08:35 PM

Artic is right. The rule of thumb on Baja is about 20 HP per MPH, that is pretty accurate and would probably go to 25 or more after 85 MPH. (Somebody throw in their 2 cents here)
Another thing nobody touched on yet is the drive. Being a single-engine Baja you are inevitably going to have drive issues so tack on another $15K for an SCX. There was a dude on here that had a beautiful Baja 26, I believe he was running a 700SCi with an SCX, great thread for you to lookup. The SCX had a whole other list of issues on a Baja 26 too that might be useful in your decision.

So, yeah just buy a new boat. LOL

Baja Rooster 06-29-2020 09:24 PM

I’m sure that you’ve found this thread by now. It seems to be the closest to the road you’re embarking on.

https://www.offshoreonly.com/forums/...c-525-efi.html


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