Who built this? - Page 3

codprawn · 15 January 2006, 05:17

Quote:

Originally Posted by MadMat

Or, more likely, prepare to learn something.

????

Petrov · 15 January 2006, 08:09

Quote:

Or, more likely, prepare to learn something.

?????

codprawn · 15 January 2006, 18:29

Quote:

Originally Posted by Petrov

?????

????????????????????????????????????????????

Matt · 15 January 2006, 18:31

What's going on?

codprawn · 15 January 2006, 18:47

Quote:

Originally Posted by MadMat

What's going on?

?

codprawn · 15 January 2006, 18:48

Dunno which is why I posted a ? in the first place!!!

Searider · 15 January 2006, 20:29

The propellers don't interfere with each other because they are side by side with probably 10" - 12" separation between each other.
They all will run in clean water aft of the transom just below the bottom of the boat.
If they were one behind to other or overlapping then they would interfere.

codprawn · 15 January 2006, 21:59

Quote:

Originally Posted by Searider

The propellers don't interfere with each other because they are side by side with probably 10" - 12" separation between each other.
They all will run in clean water aft of the transom just below the bottom of the boat.
If they were one behind to other or overlapping then they would interfere.

What about tip vortices? Don't they have an effect?

Simon B · 15 January 2006, 22:58

Probably but hasnt the vessel moved past this point and the thrust been used sort of like 2 aircraft being able to fly close to each other when side by side but not behind eachother or when prop engines are mounted close on a wing?

Dont ask me to quote the science cos I dont know it!

Matt · 17 January 2006, 23:19

Do you think these props will interfere with each other?
http://media.boatmad.com/gallery/v/l...nch+1.jpg.html

Petrov · 20 January 2006, 10:11

Little movie we made.
Took the movie away, somthing happend with the link, will come shortly again.