Bad Exhaust Flapper Twice in 18 months. WHY?

cr2k

Captain
Joined
Mar 19, 2009
Messages
3,730
Re: Bad Exhaust Flapper Twice in 18 months. WHY?

Sounds like it's time for some pictures.
 

Maclin

Admiral
Joined
May 27, 2007
Messages
6,761
Re: Bad Exhaust Flapper Twice in 18 months. WHY?

With all the "space age technology???", ther is no excuse for not marketing a bullet proof flapper. Considering the price the marine industry charges for parts, there is no excuse.

This thread is really about proper maintenance and what a previous owner may have left for the next owner, whether by ignorance or choice.

So, please pardon me while I defend the Marine "higher prices", but it sounds like you want the price to go up! :)

Like the coffee pot the airforce ordered in the 80's that can make coffee upside down, sideways, zerogravity, 50 below, 250 above, wanted it for some 'round the clock duty command plane...the winning contractor made it and the cost was in the hundreds of thousands. Most airplanes would not need the extra engineering for a literal bullet proof coffee maker like that but you could get one. The coffee maker might cost as much as some planes.

Same with flappers or any other item designed to work within parameters plus safety factors, with proper cooling system maintenance the OEM ones as delivered can outlast the engine usage-wise. Now, even if the flapper could outlast a cooling system meltdown, the rubber exhaust hoses and other components including heat sensitive parts of the engine most likely did not make it thru with no fixes needed and the boat is in drydock anyway until the rest of the cooling system and all is fixed. Flappers seem like the least of the worries at that point and they are easy enough to fix compared to costs of ones that could never fail. And make ALL of those components (impellers, engines, exhaust, etc) to where they can tolerate a meltdown? Wow, does not bode well for entry level boating in my opinion.

19' Boat with normal duty flappers: $22,000 msrp
19' Boat with nuclear war safe flappers: $24,000 msrp
19' Boat that cannot be broken ever: $210,000 msrp*
Taking care of the entry level boat---"priceless" (in comparison to repair costs.)

Following the manufacturer's recommended schedule maintenance can save a lot of money and headaches and even disasters. You cannot just keep running an airplane, it needs to have the operator take care of it to stay in the air. Same for boats (much more so than cars), I'm just sayin'....


*with special coffee maker: $460,000 msrp, call for quote.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,082
Re: Bad Exhaust Flapper Twice in 18 months. WHY?

Water is a tad above room temp, much warmer than the cold side for sure. This is after engine warm up. So I shut down and heating the water with electric part of water heater and see the difference.

Ayuh,... That water will be considerably Warmer when runnin' across the pond, instead of hi-idle at the dock...
No energy in, No energy out....
 

lmannyr

Master Chief Petty Officer
Joined
Jul 5, 2007
Messages
815
Re: Bad Exhaust Flapper Twice in 18 months. WHY?

Ayuh,... That water will be considerably Warmer when runnin' across the pond, instead of hi-idle at the dock...
No energy in, No energy out....

OK....makes sense.. I'll test it out tomorrow night while watching the Christmas Boat Parade. :D
 

lmannyr

Master Chief Petty Officer
Joined
Jul 5, 2007
Messages
815
Re: Bad Exhaust Flapper Twice in 18 months. WHY?

What do you think about the HOT Risers I posted above. Once it was a hot port riser then ran engine again a couple hours later and the opposite was true.

Also, whatever side was HOT, there was very little water coming out of the exhaust port on the hot side and lots of cool water on the cool side.

Suggestions?
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,082
Re: Bad Exhaust Flapper Twice in 18 months. WHY?

Suggestions?

Ayuh,... Water, like everythingelse, takes the path of least resistence...
The water flow through a motor is Never exactly the same...

When was the Impeller last changed,..??
 

lmannyr

Master Chief Petty Officer
Joined
Jul 5, 2007
Messages
815
Re: Bad Exhaust Flapper Twice in 18 months. WHY?

it's Less than a year old...maybe 8 months ago...
 
Top