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Discussion Starter #1
Are there certain props that tend to put lift in a tunnel ?
Boat seems to run flat without a lot of trim.
Mach 22 open bow.
2" shorty imco scx.
Currently labbed 28/ 135 gear
 

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Resident Ford Nut
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10,075 Posts
As much as I hate prop boats I have to ask, what's the current prop ? is it a 3-blade or a 4 blade or a 5 blade cleaver ?


http://www.mercuryracing.com/propellers/maximus.php

Check out the Maximus vs the 5 blade Cleaver. If I recall correctly the cleavers give good lift at the transom.....but don't quote me on that because I hate prop boats and don't much follow the technology on them.

BTW, when are you going to give me a ride in that thing.

S CP ;)

Jon :D
 

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Discussion Starter #3
Prop Hater !

I'll give you a ride when you get over your prop hating ways.
Put a prop on that sausage haulin station wagon and get some real speed.
And to answer your question-anytime if you find your way to the river.
 

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Resident Ford Nut
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See you in July or August. What prop are you running?

S CP
 

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Floatin dirty
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Yes, different props can provide different effects to your boat. some will give stern lift, some run neutral and others give bow lift. Hydromotive props tend to give bow lift while Merc Maximus tends to give stern lift due to the diffuser ring. I had a 21 Daytona which is not much different then your boat and I was running a Hydromotive 4 blade for best results.
 

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I 2nd the answer on the Hydromotive or Bravo 4 blade, Hydromotive will be faster if you are fast now. Otherwise the 4 blade Bravo will do fine, typically under 85-90 or so. Maximus will scare you as they are a tail lift prop. Hydromotive P5x is great with high X dimension and over 100 or so, it will provide the widest range of trim(bow lift), the P5 is not as much of a bow lift prop. Typically on Daytonas, they don't require much bow lift on the 25 and smaller hulls anyway. TIMINATOR
 

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Discussion Starter #8
This hull tends to run very flat at moderate speeds with an outdrive.
I'm used to tunnel hulls lifting even a lower speeds.
Once it gets air its ok but I would like it to free up at cruising speed.
Thanks for your input.
 
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