Thank you Dingo for sharing.
Frosh when I have a question on windsurfing I will ask you for your opinion. So stick to the topic.
Thanks Raggi Thor.
Raggi Thor I am very aware of those things. I am not building anything yet or maybe not anytime soon. I am learning :)
frosh. you are wrong I am not asking anyone for the best construction method. I asked for some pro and cons. and asked for some sources. And...
Thanks par. you have been very helpful. I have collected a few books and got the dave gerrs book too. very nicely explained.
because total power is 900 HP extra a little of extra power to operate at low RPM for fuel consumption (Ranchi) gear ratio 3. Maximum Engine...
where are the values .
its 2 volvo penta D12-615 ZF 350 1 IV gearbox
Kjell thanks very much for the program again I tried to varify my values with r program. can you check it with ur program .. I have posted all the...
Fast Fred says to run the numbers on 80 percent ratings.
Gerr says to run the numbers on Maximum ratings.
Ranchi thanks for ur...
Lets Talk about Z drives here. Are they used for primary source of propulsion or they are used as thurusters for good maneuverabilty
Very nice work.
Thanks again PAR i will sure find that book very soon. I checked our library and I didnt find the book or found some books on plywood boat...
The '' Folks" I meant are the academic folks remeber this is academic.
Anyway I have changed a little bit.
took 615 hp engine with a lower...
do u have the bp delta chart for EAR 0.65
well i totally agree with you. ranchi, but the folks who will be looking at this will be asking why i have taken a larger engine when the power...
well I have changed the speed
Lets say here are the details
LWL 30 m
BWL 7.6 m
Draft 1.55 m
Displacement = 124 tons
Service speed 13.3...
The diameter is 40 Inches. I cant get anything better than that. IF the redutions ratios were highr maybe i could get a lower propeller RPM and...
Thanks Ranchi. Seems to have solved the problem
Maximum Engine RPM 2600
Propeller RPM 1020
Screw B 4.55
Efficiency 56 % (behind hull...