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I think they were a "little optomistic
Posted: Sep 14th, '17, 17:18
by thuddddddd
Re: I think they were a "little optomistic
Posted: Sep 14th, '17, 19:11
by Stephan
Blame Ethanol...
Get that thing down to 12,000 lbs and wring it out again!
Re: I think they were a "little optomistic
Posted: Sep 14th, '17, 20:57
by Tommy
Unless you were running into a 12 MPH current...
Re: I think they were a "little optomistic
Posted: Sep 14th, '17, 21:11
by Tony Meola
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.
Re: I think they were a "little optomistic
Posted: Sep 15th, '17, 08:07
by thuddddddd
Re: I think they were a "little optomistic
Posted: Sep 15th, '17, 08:07
by thuddddddd
Re: I think they were a "little optomistic
Posted: Sep 15th, '17, 08:08
by thuddddddd
Re: I think they were a "little optomistic
Posted: Sep 17th, '17, 08:43
by thuddddddd
I remember a prop calculator... anyone have the link?
Re: I think they were a "little optomistic
Posted: Sep 17th, '17, 08:58
by Charlie J
have you christened the boat yet by puking
Re: I think they were a "little optomistic
Posted: Sep 17th, '17, 09:55
by thuddddddd
Charlie..... I've never puked on a real boat.... mostly RLDT's ..... so no... not this one , or the 41
Re: I think they were a "little optomistic
Posted: Sep 17th, '17, 22:04
by Tony Meola
thuddddddd wrote:I remember a prop calculator... anyone have the link?
Timmy
It is on boatdiesel.com
Re: I think they were a "little optomistic
Posted: Sep 18th, '17, 11:58
by thuddddddd
Thanks Tony..... pretty interesting playing with the calculator.... I need to get a real weight on the boat and some other information
Re: I think they were a "little optomistic
Posted: Sep 18th, '17, 20:37
by Tony Meola
Timmy
Check with your marina. The travel lift usually has a scale on her.
Re: I think they were a "little optomistic
Posted: Sep 18th, '17, 20:55
by MarkD
Thuuddd...... Love the boat!
Re: I think they were a "little optomistic
Posted: Sep 19th, '17, 05:11
by thuddddddd
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
Re: I think they were a "little optomistic
Posted: Sep 19th, '17, 21:00
by Tony Meola
Timmy
21 gallons an hour is a deal. Heck the 31 with 454s was at least 25 gallons an hour.
Re: I think they were a "little optomistic
Posted: Sep 20th, '17, 17:03
by Stephan
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
Re: I think they were a "little optomistic
Posted: Sep 20th, '17, 22:05
by DanielM
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.
Re: I think they were a "little optomistic
Posted: Sep 21st, '17, 06:42
by Carl
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!
