Volvo outdrive question. (with video)

[suparye]

Re: Volvo outdrive question. (with video)

http://www.youtube.com/watch?v=THVsf5g26K8

Just found this, at 1:10 the outdrive is engaged. Its absolutely silent. At least I have a bench mark of a normal outdrive.

 

[tkrfxr]

Re: Volvo outdrive question. (with video)

Now, that's a nice-sounding engine and drive...

When that boat is in the water, people are surprised at how quiet it runs....the exhaust path and underwater exit make this drive (like my xdp's) sound very quiet and no smoke is seen as it dissipates in the water...

Looking at he video makes me itch to recommision my boat, like spring is here...

 

[suparye]

Re: Volvo outdrive question. (with video)

I told the broker I was not interested in the boat due to the outdrive. He told me he would a mechanic look at it.

He just emailed me this video.

http://www.youtube.com/watch?v=CKa4wBF0Jz4

Dont know what to think, I havent talked to him yet.

 

[Alpheus]

Re: Volvo outdrive question. (with video)

I dont hear no props clanging together in that video. Whats his point? That the props were not spinning the same RPM's? Honestly it was the noise that you heard when putting the outdrive in gear is what originally prompted you to question the condition of the outdrive. If the boat you were looking at performed just like the one in this latest video this thread probably would not exist. What is the point of that video anyway? Is the person that made it trying to show that its broken or what? There is no info or background about that video. Bottom line, the one you are looking at is not normal IE its broke. I would have your own mechanic look at the outdrive. Who knows He might get the same guy that originally installed those props.

 

[Don S]

Re: Volvo outdrive question. (with video)

The problem is, is you don't understand that those props MUST turn at the same speed because the pinion gear is on both gears and both shafts at the same time, but in opposite directions. The forward prop is actually attacked to the aft gear in the drive, and the shaft is part of the gear.
In your second video, they are not turning at the same speed. If you was smart, just go look at the boat. With the engine off, hold one prop and try to turn the other. You shouldn't be able to. TRY REAL HARD. if they move, something is wrong. It may be a prop problem, but I have never seen the hub of a prop go and cause a prop to start and stop like the first video shows, there was a metalic clank and then the prop would turn a bit, then stop again.
If you want to buy it, then YOU find a certified Volvo Penta dealer to do a survey of the engine and drive for you. DO NOT take the sellers word or yacht brokers word that everything is perfect. They are both trying to get rid of a boat and will say anything to sell it.

 

[suparye]

Re: Volvo outdrive question. (with video)

I told the broker I was not interested in the boat due to the outdrive. He told me he would a mechanic look at it.

He just emailed me this video.

http://www.youtube.com/watch?v=CKa4wBF0Jz4

Dont know what to think, I havent talked to him yet.

Alpheus:

The point of the vid is that it IS the same boat.

Don, I honestly think the foward prop is spinning at the right speed but the camera is giving that effect, similar to watching a helo on tv.

More info to follow on monday.

 

[Don S]

Re: Volvo outdrive question. (with video)

Go back and look at your first video. That is not a camera effect. That is a problem. at idle. In the second video they keep gassing the engine so you never get to see it stop.
It's not going to cost me a cent one way or the other, but I will tell you right now that a DPS drive is about 3 times your $3000 request for a price reduction. So unless you have $9000+ ready to throw into that boat, I would strongly suggest spending a few hundred for YOUR choice of a Volvo Mechanic to check it out.
If nothing else show them the video and show them this thread. Trust me. SOMETHING is not right.

 

[suparye]

Re: Volvo outdrive question. (with video)

So this is the story...

When the dealership take deliveries on boats they do a compression test, leakdown test and take a sample of the outdrive oil.

Apprently get the oil on this outdrive you must remove both props. Well when the mechanic put the props back on he never tightened them.

The noise in the first video IS the props making contack with each other.

I have been told the only time it was put into gear like that was for the video.

Therefore damage, if any, must be minimal.

I just wanted to let you guys know the outcome. Again, thanks for the help.

This definatley wont my last time on this board.

 

[Don S]

Re: Volvo outdrive question. (with video)

Good luck with your "Pig in a poke" Make sure your seller guarantees the drive for at least one full day on the water.

 

[Maclin]

Re: Volvo outdrive question. (with video)

Just be aware that they are not being truthful and are spinning quite a story to you. I would also be very wary of this company's capabilities. I mean, wouldn't anbody wonder why cannot get the right props back on and installed correctly for a promotional shot? Their own cover story screams "run away".

The prop blades in a duoprop set cannot hit each other even if the props were "not tightened". The blades just do not extend into the 90 degree plane at the end of the hub. Stack the props on top of each other and you will see that the blades cannot hit. In my opinion they must have had an incorrect prop of some type on there when the vid was shot.

 

[suparye]

Re: Volvo outdrive question. (with video)

Maclin: would it be possible for a prop to put on on backwards and then they may cross planes?
TIA

 

[Don S]

Re: Volvo outdrive question. (with video)

Maclin: would it be possible for a prop to put on on backwards and then they may cross planes?
TIA

Nope

 

[ENSIGN]

Re: Volvo outdrive question. (with video)

You've already had the expert(D.S.) TRY to help you,I guess there's a sucker born everyday!!!

 

[Don S]

Re: Volvo outdrive question. (with video)

Let me try to explain how the DP drive works. If you take the props off of a DP drive, you will see 2 shafts sticking out as show in this picture.

Inside the drive, the gears and the shafts are put together like this.

When all in place, the pinion gear (has the vertical shaft going to the upper for shifting, fwd, reverse, and neutral) turns both hears at the same time, they can not do anything else, because the fwd and af gear can not move away from the pinion gear.

The props have splines on only the aft part portion of the props, the forward prop has a very large splined hole in it to go over the outer shaft, the aft prop has a smaller hole. If you were to turn the fwd prop around backwards, it would stick out so far you couldn't put the aft prop on.

 

[suparye]

Re: Volvo outdrive question. (with video)

Here is an example of an aswer from a leader:

Let me try to explain how the DP drive works....

....If you were to turn the fwd prop around backwards, it would stick out so far you couldn't put the aft prop on.

Here is a example of an answer from an pompass and arrogant individual:

ENSIGN: "...I guess there's a sucker born everyday!!!"

In no way have I scrutinized anyones contribution to this thread. My questions have done nothing but seek clarification of somthing I know little about.

 

[mtnrat]

Re: Volvo outdrive question. (with video)

Yep $9000, just like Don says. The drive is toast. Do not take anything the seller or anyone proffered by the seller as true. Run away or at least have a certified volvo penta mechanic look at it. you have already been given the truth, Do not heed at your own risk. Good luck in finding a nice boat. That one looks not too bad except for the outdrive, but that leads me to wonder what other hidden gems are there.

 

[Lou C]

Re: Volvo outdrive question. (with video)

and if the drive needs to be replaced...well they'd have to take more than 3K off...do a search and see what rebuilt Volvo DPs go for it's more like 5K...
the drive should not make any noise esp if it's a Volvo with a cone clutch...dog clutch drives will clunk (in water) or clank slightly (out of the water) going into gear but that's normal for a dog clutch...there should be no whining humming or growling either......my 22year old Cobra is silent running on the muffs except for the slight 'clank' going into gear....