Steerable, Inboard shaft drive?

[powerabout]

Hakes marine designed and built retractable drives for racing yachts.
I regularly race on one now.

 

[OCB]

loss Gear oil.

Why on earth would you want to run anything in salty water when you can put it safely inside the boat.

Some old outboards had open lower bear boxes with no oil and were water lubricated, new material may make that possible.
I discovered that and old outboard in my collection had been run with no grease/oil in the box for quite a while and showed little damage.

The design mite call for it be in the water. Water lubricated very interesting? Can you school me on that?

I have seen lower units gears used off road truck rear ends. The truck was 800 HP Trophy truck with 40" tires. The oil leaded out crack in the rear end housing. It raced for more then 75 miles with out NO OIL. Their was almost no wear on the gears.
The gears where from Imco lower unit.

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[OCB]

Trust bearings

You can combine standard adjustable thrust bearings in a conventional inboard shaft drive with C/V joints and also twin U/V

Front axles use 2 small tapered roller bearing or Omni joints that are very close together in 4x4 front diffs.
The Cv will work,But not at high angles. In case steering and trim. Cardan joints won't last in very long in a high angle 4x4 driveline.

 

[OCB]

Retracable Yach drives

Hakes marine designed and built retractable drives for racing yachts.
I regularly race on one now.

Thank you, I will study that design.

 

[tom kane]

I have used water lubricated prop shafts in a torque tubes for years and they were great just polished the shafts no signs of wear Novasteen product. Rubber types were no good.
In the auto trade it often happened that some auto service people forgot to replace the oil in engines and G/Boxes and when this was discovered no apparent damage was found,just a little is all it takes and of course there are gear boxes spray lubricated to reduce the drag of heavy oils. Never the less Manufacturers recommendations are the best.
Synthetic oil and Silicone, Graphite and similar lubricants have their application in heavy Industrial use. Finding the right knowledge base for the information is difficult.

I don`t think that running such things as C/V`s and U/V`s in water at present is practical they would need to be very streamlined to avoid a lot of turbulence and rotational friction.

 

[tom kane]

Steerable,Inboard shaft drive

Front axles use 2 small tapered roller bearing or Omni joints that aree very close together in 4x4 front diffs.
The Cv will work,But not at high angles. In case steering and trim. Cardan joints won't last in very long in a high angle 4x4 driveline.

Cardan shafts have been used in boats (in a fixed position) and in autos and have been successful for ages so setting them up so they can move in any direction
helps them last and spreads the wear and lubrication over a bigger area.
A conventional prop shaft in a torque tube drive inboard set up using thrust bearing twin U/V joints with a sliding spline works great and simple and will last forever.
You can use 30 degree U/V joints. Keeping the U/V joints at 5 degrees each prefered.

 

[Barry]

www.sarodrive.com/en_technik01.php

The surface piercing, steerable, trimable prop drive from Germany

 

[OCB]

www.sarodrive.com/en_technik01.php

The surface piercing, steerable, trimable prop drive from Germany

Thank you for posting, I have seen this drive. I'm still looking for a inboard steerable if their is one?


OCB

 

[Barry]

Their info says that it is a steerable drive

 

[BlueBell]

LOL!
That was quite the read. I just happened upon it.
OCB and Tom Kane were quite a match!

ATTN: @DogCavalry @bajansailor