| u4ea32 |
The 47 now is available with twin Yanmars+ASD, seems like a sensible package.
Anyone actually have one of the Yanmar+ASD Fountain 38/42/47/48/52?
How long have you owned it?
What do you think so far?
The 47 now is available with twin Yanmars+ASD, seems like a sensible package. |
|
|
| BTMarine |
I have a 42' wih Yanmars and Asd, the boat will run 77mph at wot and cruise 70 to 75 all day. Fuel mileage is about 3mi's per gal. This boat is for sale, if you know anybody that would like a great boat give me a call. (561-324-0536) Bill Mazzoni
PS: If you have any questions about how they run also call me |
|
|
| u4ea32 |
| Bill, I'll call you tomorrow. |
|
|
| u4ea32 |
I talked to Bill, and here is what I understand (Bill, please correct any of my misunderstandings):
Overall, it sounds like an excellent package.
The diesel+ASD boat burns about half the fuel compared to a gas boat, consistently getting 2 miles per gallon or better.
The ASD package is very reliable.
Originally there was a problem with the clutch that was solved by changing the gear selection from being cable operated to electrically operated. Fountain factory installation uses the electrical shift now.
Outdrives can keep the boat on plane at a slower speed than the ASD.
Time to plane is slower than a gas powered boat. Once the boat is on a plane and properly trimmed (tabs and drive), then the boat really is quick to accelerate.
The diesel+ASD boat will out accelerate a gas boat up to about 75, and be a dozen or two boatlengths ahead, but then the gas powered boat will catch up and go past: diesel top speed is in the high 70's versus 90 or much higher in gas boats.
Due to the surfacing nature of ASD drives, one must be more attentive to working the throttles.
Trimming the drives takes work too, especially in a seaway.
The ASD outdrives are much lighter than six drives, maybe even lighter than Bravos.
The engines are not staggered, they are side-by-side due to their length.
Service access to the engines is still pretty good.
The engines are much larger and heavier than gasoline engines. The total installed engine is substantially heavier than the Yanmar specs suggest: nearly 1500 lbs per engine+transmission.
As an aside, IMCO discovered the same thing when they put twin Yanmars in a 40-something foot Hallett recently: the installed engines weighed about 1800 lbs, whereas they were expecting about 1150. IMCO pulled those engines out, and they are now sitting on a shop floor somewhere. |
|
|
| u4ea32 |
I also emailed back and forth with Rik at Arneson.
Rik is confident in his claim that the ASD allows a boat to plane at a slower speed than outdrives, this based on side by side testing of Fountain 42s.
Therefore, the ASD slow speed issue may be one of perception: perhaps is just seems like you can't get it to plane slowly, but that outdrives are even worse. I dunno. |
|
|
|
