true tunnel vs modified V

[kielbasa]

Hi guys.....haven't been here in a long time, got a question....i want to totally change the bottom of my little 15' Ebko boat (tunnel that turns into flat bottom), however i am curious why STV's, quartershots, HST's, liberators, etc all have that center pod and obviously the true tunnels don't, pros and cons of each?
i also watched an STV this past weekend go over some 1~2 foot chop, that thing was bouncing all over the place while the family style deep V's looked rock solid, i was under the impression slight chop like that isn't supposed to phase the tunnel style boats??
also who would be a good person to contact when attempting to redesign the bottom of this little boat? i realize there probably isn't a simplistic quick and dirty answer, but i need to start somewhere, Thanks for any input!

[Mark75H]

I didn't know EBKO made one like that. Can you post a picture of it?

My advice on modifying your boat that much:
Don't ... just buy one they way you want it to be

[Brad Zastrow]

The reason you are not getting many posts is your questions are so complicated. You are asking about engineering a hull bottom. Also general questions about various hull comparisons is very difficult to summarize in a few paragraphs.

I would recomend buying a hull you like rather than try to make one.

[tunnelmike]

You might create some very ill handeling charicteristics by changing the bottom. for a slow cruiser go for it. Mike

[tunnelmike]

You might create some very ill handeling charicteristics by changing the bottom. for a slow cruiser go for it. Mike

[Capt.Doug Metko]

Contact Jimboat at www.aeromarineresearch.com (http://www.aeromarineresearch.com) he can help you if you want to go foward with this project.

[race#115]

one thing i will tell you is that a stv (pro comp) handles rough water very good if you know how to drive one in it.Mine is great in rough water,my wife even likes it and she hates most boats and wouldnt even get in my old alison.

[David]

I'll give this a shot.

The Mod VP center sponson type tunnel hull more or less came about from OPC rules that required 'V' bottoms to have the center deeper than the outer sponsons. True tunnels were required to race in a separate class. I think Eliminator's 19' Daytona, originally designed for jets, was the first one.

Although developed for race boats, the Mod VP style bottom carries weight better than a true tunnel, so a lot of 'recreational' versions were developed. As far as that goes, V bottoms carry weight better than MVP bottoms.

The aeromarine software is what you need if you want to modify your boat. But it would be way easier to buy what you want. There is a lot of trial and error in developing a hull.

STVs are supposed to ride well in chop, but no hull can overcome all driver error.

[Racemore]

A centerpod makes a boat easier to get on plane by breaking the water so it can turn up besides the boyancy it lends and they run well in the rough.
It is also lets you tune the motor height for desired performance.A true tunnel with a single outboard the same size of a stv will out perform in the rough because there is no drag or restriction from the water going thru the tunnel.

Ive been in the situation numerous times against V's and mod vps with my old 19' tunnel and the faster I go the smoother it gets.I can easily get myself in water too rough to slow down in.I had my stepson and his dad turn his mvp around rather than cross sections of the river with me although he was 15mph faster.Just a few pro's&cons. The only boat that would matchup was a 21 daytona.

A pic of the old rig.19 Sterling/T3 mid/alpha case/220lazer

[THE HOGG]

whos the short haired guy???