Oscar Continued

[greenman407]

Wow! What a can of worms I have opened. Thanks Guys for all the input. Kevin, as you probably can guess I also use independant control of each prop and can turn it around pretty good. This is just another gadget or gizmo if you will, that I wanted to add to the boat. As far as how much power they will have , If you believe the stats on this pump, pretty powerful. Thats why I ordered only one. Ill test it out first and If it seems doable, Ill proceed or look for another one.
As far as whether it will work or not, Salvador Moran wrote an article for the SCR, notably December 2009, showing the good results he had on his Sheerline Akula which is 1/96. My Oscar is also 1/96 but somewhat bigger. Thats why high flow pumps will be needed. Whatever happens , I will take it. If I dont like it Ill take it out or make some changes. At any rate, its new territory for me so I wont get bored. The pump is supposed to be here first part of March. As usual, Ill share all my DEEP.......DARK.......Secrets with you.................dudes.

[greenman407]

I know it will work when the boat is still or going slow, which is where I plan on using it the most. However, If it,in concert with the rudders, will improve the turn radius, then there is some payback, and we can go from there. One thing that I want to experiment with is working at high forward speeds. If we change the angle that the water jet exits the hull we may increase or decrease its effectiveness. For example. If youve ever paddled a canoe, you know that if you want to turn , you can do it several ways. If you are sitting in the rear, you can use your oar as a rudder. Or you can just stick it in the water as your moving forward and rotate it until the widest profile of the oar is causing drag on that side and the bow will come around. Therefore if the stern jets are pointed forward by, say 30 degrees, it will cause drag on that side. How much?..............we will see.

[trout]

Mark,
i will be the last one to say don't do it. It is experimenting like that bring new innovations. Go for it!

[KevinMc]

Kevin, as you probably can guess I also use independant control of each prop and can turn it around pretty good. This is just another gadget or gizmo if you will, that I wanted to add to the boat.

I couldn't recall if you'd done the diff throttles or not so I wanted to point out doing the easy stuff before cutting more holes in your hull.

As Tom says, far be it for me to try to dissuade anyone from trying something out on their boat. I can't wait to hear about your results!

[reddevil]

Of course an independent propeller control combined with a thurster and adequate rudder movements will allow you to move the sub sideway. That's one of the most funny and spectacular maneuvres you can do with a ship fitted with all those items. Modern supply ships and tugs do have them, operated through a computer, and all you have to do is move a joystick to move the ship exactly corresponding how you moved the joystick (incluiding turns). This gives you total and easier control.

[KevinMc]

Modern supply ships and tugs do have them, operated through a computer, and all you have to do is move a joystick to move the ship exactly corresponding how you moved the joystick (incluiding turns). This gives you total and easier control.

And there in lies the problem - I can say from personal experience that I found managing two throttles and the rudder was detracting from my enjoyment of running, I can't imagine adding a couple of side thrusters to the mix. Of course I recognize that everyone gets their jollies from a different aspect of the hobby so what was driving me nuts may be exactly what Mark is looking for and I look forward to hearing the results of his experiments.

[KevinMc]

Modern supply ships and tugs do have them, operated through a computer, and all you have to do is move a joystick to move the ship exactly corresponding how you moved the joystick (incluiding turns). This gives you total and easier control.

And there in lies the problem - I can say from personal experience that I found managing two throttles and the rudder was detracting from my enjoyment of running, I can't imagine adding a couple of side thrusters to the mix. Of course I recognize that everyone gets their jollies from a different aspect of the hobby so what was driving me nuts may be exactly what Mark is looking for and I look forward to hearing the results of his experiments.

[greenman407]

AMEN...........................god help me

[HvyCGN9]

On the twin throttle subject I run a modified Turnigy 9X Tx on CGN9 with twin throttle sticks (thx Oztruck!!) I can spin the 3m cruiser on the spot, pull perfect docking maneuvers(most of the time!winds permitting...I also get told off for showing off and going to fast....) For a big twin screw Russian (Oscar or Typhoon) I would invest in a FC16/ or F14 set with the twin stick setup (get em while ya can....) I think Rob over in Perth drives his Typhoon with an F14Navy Tx. With the great width between props 'tank' steering should assist enormously...


My two Surface unit Tx's

Cheers Bruce

[greenman407]

Thanks Bruce. That looks like it would be helpful. Oh Well, Ive already made my investment.
At any rate I received the test pump today. Ill be testing it tomorrow to see how much "push" it has.

[greenman407]

Well, I was hoping for more thrust but, I guess that its enough to try it. In the bathtub,as you can see, it sends out a stream of water 2 to 3 ft. long. I reduced the output tube size to a little less than 1/4" to achieve this. Ill do that again so that I can use 9/32" brass tube to exit the hull. I just today ordered three more pumps. After they arrive and are tested then Ill order the electronic switches and begin the installation.

[crazygary]

Wow!!

Pretty sweet results there, greenman407!

Hope your latest find works well for you!!!

[greenman407]

Thanks Gary. Here we are with the pump. A trip to Lowes yielded good results on the plumbing of this thing. I was going to buy a bunch of brass round tube that slides nicely within each other and make a reducer. It was going to cost $32 to go that route. IM NOT MADE OF MONEY............ya know. Lowes had the answer with this 3/8" nylon hose. Ill silicone it inside the pump exhaust nozzle. Its a good fit over the 9/32" Brass tube that ill use as an exit nozzle jet. Im going to set nozzles on all four corners, and use one pump at each corner. On each corner Im going to install two nozzles, one at 90 degrees and one at 35 degrees angling away from the center of the boat. I will explore the various nozzles and If the force is too high ,Ill put a resister inline electrically.

[greenman407]

I dont know whats wrong with the pictures but they dont display unless you click on them. At any rate there is plenty of room to put the pumps in between the Subdriver and the inside hull wall.

[crazygary]

Good find, Greenman407!

I*** we can think it, we can git 'er done!!

Nice!!!