PVC Exhaust

Hey Frosty, If you wrap them in 100mm fibreglass tape, overlapping nice and even, they will look like "bought" ones, I did this with a water separater and wet box on a gen set years ago, still in perfect condition.

 

Your just yanking my chain FMS.

What do I need with specifications after 10 years. My exhausts have outlived the VHF and the handheld both made in USA along with 2 bilge pumps and a float switch. Oh and an American fish finder yeah the bird one!!! The aft deck lights need replacing and im nearly on my 3rd dinghy. Exhaust ? no problems,-- and thats not acceptable to you.

Maybe I should no longer bother with trying to prove thier acceptability but to suggest thier superiority.

 

Asking for help or telling your "friend" that "it" works is meaningless without specificity knowing what "it" is.

To be fair, I give Frostie credit for the following:
1.) he doesn't risk other lives to test it
2.) he fit this only with redundant engines. A failure of the experiment wouldn't render his boat inoperable
3.) there isn't any electric or other equipment under the exhaust to be damaged upon failure

 

A few years ago I was involved with maintenance and some modifications work on two SAS aluminim high speed RHIB powered with 450hp high speed diesels - both boats had straight line pipe and silencer systems with transom outlets.
Both twin exhaust pipe and silencer systems were professionally made with high strand woven glass fibre and vinylester resin good for 600degees - mufflers were replaced at 300hr because they burnt. PC pipes would start a fire

 

In defence of Frosty he did a lot more - remembering species and material used 10 years ago bloody 1-and-a-half years ago I cannot remember the diameter and pitch of my propellers without referral to my records - to be sure to be sure

He is probably a better engineer in practical terms than most on this net...

With my water injected exhausts I am often complemented on a very quiet running boat... Plastic is good so long as it is rated for the anticipated temperatures which are quite cool after the water injection...

 

Sorry FMS I cant reply to your chain yanking the internet is down again ---damn it.

Watchkeeper you say it will set on fire?

I say it wont will you take a bet of 100,000 dollars if your so sure of your opinion ---- 100, 000 dollars or more if you want.

Are you realy sure about what you say on the internet.

Geez I hope im right --I maybe wrong oh dear what have I done!!!

 

Might just do that Landy I was looking at the potential of that today. Thing is it will still be PVC inside and apparantly I will set on fire and explode or worse. I seem to remember Robert Louise Stevenson being told about his steam engine the "Rocket" that he too would explode if he exceeded 40 MPH.

Yes I will have a go at that even if to just stop the nagging of the flat Earth society.

I wont bother waiting for a bet --no one has the balls.

 

Fraid you lost 100.000K, I'll send my bank details...

The two SAS 11mt boats had water injection, the silencers were water lock but due in part to poor design and limitations of shallow assault RHIB the hi temp WL were burning - turn yellow, begin delaminating and blister.

On another occassion a wealthy but irresponsible (being polite) Aussie businessman purchased a 18m Princess in Jameriah Marina after I surveyed the vessel.
My report included instructions the yacht cannot leave the marina until every hose, hose clips, hydraulic fitting has been replaced, sea valves removed and serviced and a whole bunch of other stuff.

Three nights later he called me 11pm about sound of water in ER during a party on board at the marina. When I got there I found AC running and a jubilee clip on AC pump hose let go, .5mt water in ER plus oil spill (local meknic drained LO into bilge). I had to shut off bilge pumps before oil went into harbour while I did a temp fix under water.

That week the owner had some repairs done so he could take his visitors on a cruise. He couldn't get correct size exhaust hose mixer to water lock so his meknic used PVC, 1 hour out the ER caught fire, boat burnt to water line, no insurance pay out because they had installed unapproved materials.

When lives are a cost, criminal charges possible and risk of invalidated insurance there is simply no acceptable reason or justification for not using marine quality approved parts and materials

 

That's funny.

If you want to make it look not so utilitarian,how about the missus knitting up a large sock covering for it and cover that with sequins?
Or she can go at it with a few kilos of rhinestones and some glue.

Or maybe some stainless steel woven mesh,make it look all high tech and pricey.

How about a carbon fibre printed vinyl wrap...wouldn't cost much and would look expen$sive.

 

Just make exhaust out of clothes dryer hose!!!!!

 

your very good at telling stories true or other wise we will never know.

It will cost you 100k to talk to me--Im serious put your money where your mouth is.

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I went to the local boat shop today to buy bits as you do and on the shelf was a plastic exhaust I said OOhh pass that down to me I want to look at it. It was definately PVC made so badly i could dig my finger nail in it I would not keep milk bottles in it which I think it was once in its previous life. If this is what you amateurs have been looking at then I agree what a mess and it would melt.

I know now what you think and Mine are extrememly high quality in comparison that ( sorry I need to keep saying this) has been on the boat 10 years.

 

I have been doing boat stuff since I was a sprat, father owned/sailed a 26' Mulet (NZ traditional work boat/rec sail yacht).
I qualified as marine diesel engineer, been sailing, building, repairing, conversion craft to 60m for 30yrs both on the tools and P/T mgr and or site works supervisor so I earned my stripes. I've owned several yachts, my current a 80' ketch
When we learnt our trade in NZ in 50-60s we learnt our trade and then some.

 

What seems to be going on here is the reverse of tomAatos and tomartos same product, different names... whereas both sides are talking about PVC, but in this case, same name DIFFERENT PRODUCT... - - So enough already it is bloody boring and ANAL on both sides and becoming personal and not PRODUCT derived discussion and the point is bloody trivial wanking to say the least... time to STF up...

 

We all have --every one here has marine back ground -- We all started in daddies boat, I did this I did that is non productive.

Your not the only one. However thanks for the input the problem has been discussed and a satisfactory outcome settled --thanks again .

 

I think your remarks are offensive and irrelivent