I think they were a "little optomistic

thuddddddd · Post by **thuddddddd** » Sep 14th, '17, 17:18

http://www.hatterasowners.com/Brochures ... CB-002.pdf

thats with 6.2 EFI Horizon mercruisers @4800 rpm

Stephan · Post by **Stephan** » Sep 14th, '17, 19:11

Blame Ethanol...

Get that thing down to 12,000 lbs and wring it out again!

Tommy · Post by **Tommy** » Sep 14th, '17, 20:57

Unless you were running into a 12 MPH current...

Tony Meola · Post by **Tony Meola** » Sep 14th, '17, 21:11

Maybe it is that extra 2 inches they squeezed into that 34 foot length.

Like Stephan said lighten it up, and take a good hard look at the props. Maybe they need tweeking.

thuddddddd · Post by **thuddddddd** » Sep 15th, '17, 08:07

http://www.hatterasowners.com/Brochures ... B-0163.pdf

thuddddddd · Post by **thuddddddd** » Sep 15th, '17, 08:07

http://www.hatterasowners.com/Brochures ... CB-001.pdf

thuddddddd · Post by **thuddddddd** » Sep 15th, '17, 08:08

http://www.hatterasowners.com/Brochures ... CB-003.pdf

thuddddddd · Post by **thuddddddd** » Sep 17th, '17, 08:43

I remember a prop calculator... anyone have the link?

Charlie J · Post by **Charlie J** » Sep 17th, '17, 08:58

have you christened the boat yet by puking

thuddddddd · Post by **thuddddddd** » Sep 17th, '17, 09:55

Charlie..... I've never puked on a real boat.... mostly RLDT's ..... so no... not this one , or the 41

Tony Meola · Post by **Tony Meola** » Sep 17th, '17, 22:04

thuddddddd wrote:I remember a prop calculator... anyone have the link?

Timmy

It is on boatdiesel.com

thuddddddd · Post by **thuddddddd** » Sep 18th, '17, 11:58

Thanks Tony..... pretty interesting playing with the calculator.... I need to get a real weight on the boat and some other information

Tony Meola · Post by **Tony Meola** » Sep 18th, '17, 20:37

Timmy

Check with your marina. The travel lift usually has a scale on her.

MarkD · Post by **MarkD** » Sep 18th, '17, 20:55

Thuuddd...... Love the boat!

thuddddddd · Post by **thuddddddd** » Sep 19th, '17, 05:11

Thanks Tony and Mark...

Funny thing about the prop calculator...with the available info , and even making stuff up (gear ratio/existing prop sizes/hp/total weight ) ... there isn't a lot of performance difference between the various props (on the basic calculator) 20-22knt cruise @4100 , around 20-22 gph... 29-31WOT and 40-44gph ( that is a short day , with on;y 225 gal under the deck) ..... the calculator "loves" something around 17x 15(22knt cruise 31WOT)..... I'm running 20x15's have a set of 17x20's kicking around .... guess I'll have to get actual numbers on the various systems.... but short of a diesel repower I guess I have an idea of real and imagined performance

Tony Meola · Post by **Tony Meola** » Sep 19th, '17, 21:00

Timmy

21 gallons an hour is a deal. Heck the 31 with 454s was at least 25 gallons an hour.

Stephan · Post by **Stephan** » Sep 20th, '17, 17:03

Talk about optimistic...
@4100 I would expect each engine to be nearer to 40 GPH
For My 454s 3100 RPM is about 24 kts at 28gph. I can round up to 1 GPM at about 20 kts with about 2850 if my memory is correct. All this is for calm seas. While the ride is acceptable at 20 kts in some chop the 1 GPM disappears.
My props started life as and are stamped 18X18 however the measure 17.5X17. I have small rudders among other things.
Stick with the imagined performance - it's more durable.
Regards,
S

DanielM · Post by **DanielM** » Sep 20th, '17, 22:05

Stephan,

Funny picture. I have had friends come and ask my advice about this or that 'great deal' they have found on an old boat that needs redone. I always tell them the same thing. Any time you want to fish, hire the best charter in the area, tip them handsomely, stand in the cockpit and throw crumpled up $100.00 bills in to the wake and then giggle knowing you're coming out ahead. That being said, I just like messing around with boats. Wish I had more time for them.

Carl · Post by **Carl** » Sep 21st, '17, 06:42

DanielM wrote:Stephan,

Funny picture. I have had friends come and ask my advice about this or that 'great deal' they have found on an old boat that needs redone. I always tell them the same thing. Any time you want to fish, hire the best charter in the area, tip them handsomely, stand in the cockpit and throw crumpled up $100.00 bills in to the wake and then giggle knowing you're coming out ahead. That being said, I just like messing around with boats. Wish I had more time for them.

Ain't that the truth!

bertram31.com

I think they were a "little optomistic

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