Velvet Drive Rebuild

[Chasing28]

Looking for a reputable shop to have my velvet drive (C-72) rebuilt in the Stuart Florida area.

Thanks

Jim

 

[DCMY #92]

I used Transmission Marine in Ft Lauderdale many years ago to rebuild both of mine. They are still working great.

 

[Captain Ralph]

Your dealing with probably the simplest and easiest clutch in the world,, ever,, to repair and rebuild.
Morpar 727 clutches, bands and seals. Hand full of common O rings.

Does it need a rebuild? Problem?
Are you mechanically inclined?

One of our support shops;
http://www.marinegears.com/

 

[madhatter1]

Mine supposedly needed a rebuild due to fluid leaking out. Big $. Turns out it needed a 50 cent O-ring. So like Ralph asked, what is the issue?

 

[Chasing28]

Transmissions are leaking about a quart every 12 hours of operation. The boat is on the hard for the summer and I am putting together our winter cruising plan. To that end, I am also putting together a maintenance budget (stabilizers, transmission etc.) and looking at worse case scenario wrt transmissions. I have twisted wrenches over the years, but I am in Canada and the boat in Florida. What is the scope of work to uncouple, break apart and rebuild? I have been hearing 2200 per unit?

Your dealing with probably the simplest and easiest clutch in the world,, ever,, to repair and rebuild.
Morpar 727 clutches, bands and seals. Hand full of common O rings.

Does it need a rebuild? Problem?
Are you mechanically inclined?

One of our support shops;
http://www.marinegears.com/

 

[Captain Ralph]

Transmissions are leaking about a quart every 12 hours of operation.

So, both clutches are leaking fluid or oil.
But while operating they work fine?

#1 leakier on a 7* clutch,,,front seal.
The seal is about $3.00 and does require the clutch to be slid back from the bell-housing.
#2 leakier is the rear seal, about $12.00 and just requires the shaft to go back and flange removed.
#3 Leakier is the oil cooler.
#4 leakier is the select shaft seal.

None of these require a rebuild. On site service can fix these.
What are we missing that requires a rebuild?

 

[Captain Ralph]

I have been hearing 2200 per unit?

Per rebuild or R & R??

 

[Chasing28]

You are not missing anything re. rebuild, as mentioned earlier, I am budgeting for maintenance prior to heading offshore for the winter and in that budget, I am looking to understand if they had to be rebuilt, what should I budget for that particular project.

In the meantime, they are both leaking at a rate that I am no longer comfortable with, and undecided if it is a project I want to take on. That is why I am looking for feedback on the scope of work.

I greatly appreciate your input here Ralph.

Best regards

Jim

So, both clutches are leaking fluid or oil.
But while operating they work fine?

#1 leakier on a 7* clutch,,,front seal.
The seal is about $3.00 and does require the clutch to be slid back from the bell-housing.
#2 leakier is the rear seal, about $12.00 and just requires the shaft to go back and flange removed.
#3 Leakier is the oil cooler.
#4 leakier is the select shaft seal.

None of these require a rebuild. On site service can fix these.
What are we missing that requires a rebuild?

 

[Captain Ralph]

Then tap on this shop for an estimate; http://www.marinegears.com

They may have your exact model rebuilt/exchange units ready to ship.
Time and headache saver.

 

[dsharp]

I’ve rebuilt a large number of the 71 and 71 series reduction gears at the family boatyard. Once you have them out of the boat and on a bench it shouldn’t take more than 2-3 hours to rebuild the gears. The front seal has a bad habit of wearing grooves in the input shaft. They make seal repair sleeves that are inexpensive.I’m not sure if they make a repair sleeve for the output coupling if it is also grooved. Depending on the hours you may want to replace the clutch plates in the clutch pack.The plates crossed over to Ford auto trans clutches. Whether they were the the same as Mopar plates I don’t know. The main variable is getting the gears removed and out of the boat. I’ve seen coupling bolts that it was easier to split the nuts with a cold chisel rather than deal with the rounded nuts. Some clutches the rear motor mounts had to be removed to get the center gear bolts out. Some makers used a stud with nut on the center bolts. It really just depends on how rusty everything is. Putting the gears back in and aligning the engines should take 2-3 hours per side. I have no idea what the hourly rate is , We sold the yard in the mid 80’s

 

[Chasing28]

Thanks for the input here DSharp, greatly appreciated!

 

[Chasing28]

Thanks, I did reach out based on a couple of responses and I think I have a direction forward. Greatly appreciate the note!

Cheers
Jim

Then tap on this shop for an estimate; http://www.marinegears.com

They may have your exact model rebuilt/exchange units ready to ship.
Time and headache saver.