Unauthorized V-drive modification

[INCOMMUNICADO]

Dale, I agree that a well desinged hydraulic drive system could work well. But I don't think it would go along with KISS. We have enough horse power not to be efected by the loss of 15 to 20 percent.The system would run very smooth ( if properly alined and installed) I think the problem is cooling the oil if the unit is run for days nonstop. If it's water cooled we have another heat exchanger to deal with. If it's air cooled we need a large cooler with fan enough fresh air inducted into the engine compartment to do the job.( that would be alot of moist salt air) As for saving space I'm still thinking about that. With 5 to 20 gallon oil resevoir, pump mounted to the rear of the Perkins hydraulic motor,all the hydraulic components and drive and cooling.All this makes my head hurt. But I think it would be a great system on Maruska, Incommunicado is far to old. Have fun with your new project this winter.Please post pictures. Allen

[S/V Deo Volente]

Dale you  sound like the guy who could make the hydraulic drive work. I was only concerned that a good idea could be poorly executed, like the one I saw. Of course there is generator powered electric drive.

[Dale Tanski]

All good ideas can and are often poorly executed, yielding unanticipated results. Our government is a good example.

If the opportunity presented itself I would love to try.  We must keep in mind that all automatic transmissions like the one in your car are basically hydraulic drives and they prove themselves daily, so much so it is difficult to find a family sedan with a gear box and a clutch.

As for Allen, you sir had the opportunity to become a hero in the 365 community. A pioneer, a traveler to the planets, a god among the masses.  Now I realize that didn't end so well in all of those scenarios but opportunity is still opportunity.

Good motoring...

Dale 

[PeteW]

Rebuilding a Walter Machine RV-10 and don't care for the prices they have quoted on parts. I've already been gouged over $300 for bearings seals and gaskets. But will also need to replace the #9A pinion shaft ($220) and one of the end yokes in the #34 double Cardan assembly.



The shaft is definitely something  unique to Walter machine. But the CV joint components can be purchased elsewhere. I center yoke is Spicer 10-26-47, the U joints are 1000 series Spicer S-170X. But I cannot locate any suppliers of 1000 Series End yokes with 1.0" 10 tooth spline bores. (10N if your looking at Meritor). 1000 series is too small for automotive so its a tractor/PTO part.

Walter Machine refuses to sell me just a yoke new or used. They say I have to buy the entire assembly from them for $430. I am beginning to think the yokes are ground down to achieve the 1.18" bearing shoulder and are made from some automotive OEMs end yoke forging. So I need help finding this OEM part which should only cost $35.

Incidentally the 1"splines on the pinion shaft and end yoke is the weakest link in the RV-10 V drive design. So if you have backlash in the drive this is what is most likely worn out. My input yoke was good but the pinion yoke and pinion shaft splines are hammered.  I'm assuming I am not the first Pearson owner to have to replace these parts.

Pete  

[PeteW]

Here's something you don't see every day.


On the left is a set of 1:1 gears from a Walter RV-10. On the right is the 1:2 gears we all have in our Pearson's.  The 1:1 gears are what you will need if you ever want to re-power with a Yanmar 3GM. I can't imagine what Walter Machine would want for a set of these if they are even available. I needed a pinion  shaft  and CV joint yoke so the cheapest thing to do was cannibalize a used  V-drive. So now I have a plan C if my motor blows when I'm on the other side of the planet.

I say Yanmar 3GM because 30 horse is all you will want to push since Walter rates the 1:1 Vdrive at 2.7 HP per 100 RPM. Since the Yanmar reduces 2:1 we are talking 1500 RPM max. Because the equation for torque = 5252 x HP / RPM. Walter says take 75% of that for diesel.

Pete   365 ketch old hull #6.