Hi everyone There has been some previous threads on propulsion using oscillating fins, I have since scaled up to a manned size cat boat for sea...
G'day Kjell That looks like a great program, this is what I'm talking about ! Info: The hulls the are outriggers of a windrider sail trimaran...
G'day Can anyone please provide formulas and some explanations of them, that are used to calculate an efficiency of propellors and different...
Again Kjell you are stating the obvious ! show me some of your wisdom ! All tests i conducted are done on the same boat, so drag is exactly the...
That one is easy, i have already done the practical test to confirm my assumptions, there is no speculating here, its 45 deg pitch 90 freq,...
No suggestions then, said 40yr Guru ? Seeing that static thrust is equal to overall top-end boat speed less drag, I am suggesting a run test...
Please show me were this wheel has already been invented ? I know that for efficiency calculation "thrust" is a required field and when i...
I will try to explain what is happening from my observation, and why a bollard pull test does not work with my fin propulsion old mate ! At...
Sorry old mate but my pond & sea trials would suggest otherwise, i'm not sure your on the same page as i ! There a different dynamics at play that...
A bollard static thrust test is ok for the prop, the fin-drive as nearly zero static thrust. the thrust on the fin-drive is proportional to fin...
Thanks ! 360 watts is all i need, cheers !
I kind of know that, its written on the cover:rolleyes: Do you know what watts or KW are pulled from the batt when asked to produced 30 lds of...
Any idea what the nominal efficiency is of the electric outboard ?, looks the same make i have (Minn kota) My 30 size mini kota unit draws 50...
