Official 390 E.C. Thread

Hi Guys,

Had my maiden voyage yesterday. Lots of cool crane pics that I will post later tonight. Had a newb question here. On the sea trial I was told to keep the bow out of the water when cruising, but it seems that it makes a huge wake, and that means you're plowing water. Is it more effiecient to use the tabs to lower the bow and create less wake? I'd rather not test it out while burning rediculas amounts of fuel!

Top speed yesterday was 27MPH boat weighs in at 22,000 pounds according to the crane. Also my windlass i think is the original. it says "good windlass" on it. It will only let the anchor down about 3 feet, then the motor just spins without dropping it any more. It picks it up just fine. Any suggestions?
 
Hi guys, I have a friend who just purchased a '89 390EC and he is trying to find some way to mount the motor from his dinghy on the transom during travel. Anyone have any ideas? I suggested this forum to him but he has not joined yet. Thanks

Greg
 
br1212 said:
Hi Guys,

Had my maiden voyage yesterday. Lots of cool crane pics that I will post later tonight. Had a newb question here. On the sea trial I was told to keep the bow out of the water when cruising, but it seems that it makes a huge wake, and that means you're plowing water. Is it more effiecient to use the tabs to lower the bow and create less wake? I'd rather not test it out while burning rediculas amounts of fuel!



Top speed yesterday was 27MPH boat weighs in at 22,000 pounds according to the crane. Also my windlass i think is the original. it says "good windlass" on it. It will only let the anchor down about 3 feet, then the motor just spins without dropping it any more. It picks it up just fine. Any suggestions?
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These things ride waaaaay too bow high to begin with. Bury the tabs all the time on plane. Search for the Pietro Tab and you'll see how some of us have solved this problem. It's worth its weight in gold. Also, it sounds like you either have a problem with the clutch on the windlass, or the rope is kinked and won't fall. Check the rope in the locker. If it's not the rope, call Good. They are great windlasses, and a great company.
 
Agree with 390x, these boats are Kardashians- very butt heavy. You will need full tabs down all the time. Several of us have done different things to increase tab area for even better performance.
 
docofthebay said:
Agree with 390x, these boats are Kardashians- very butt heavy. You will need full tabs down all the time. Several of us have done different things to increase tab area for even better performance.
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haha very funny way to describe it! Next time I have my boat hauled out I will look into the different tabbing options! For now though I don't think I will be WOT too much, mostly just putting around. I will check on the windlass and make sure nothing is tangled in the locker.

Just for my own knowledge, its starting to get 90 degree's everyday here. I left my AC running today with it set at 80 just so it does not turn into a oven. The one thing about my pump is that it does not shut off when the boat is at temp. It will run constantly. How long do these last, and does anybody run theirs all the time without issue?
 
Go back to post #182 in this thread and you'll see what I did to mine. I never go WOT, but for the same cruise engine rpms I get 1.5 mph more and the bow is at least a foot or two lower. Better performance at usual running speed, or adjust throttle back to previous mph and use less fuel
 
"The one thing about my pump is that it does not shut off when the boat is at temp. It will run constantly."

It is normal for the A/C pump to run continuously as it is on it's own separate breaker. As for how long do these pumps last? Don't know ... never had to replace mine.
 
electricaldoctor said:
"The one thing about my pump is that it does not shut off when the boat is at temp. It will run constantly."

It is normal for the A/C pump to run continuously as it is on it's own separate breaker. As for how long do these pumps last? Don't know ... never had to replace mine.
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Here I am after 6 days on the boat :smt001 ...the water pump should stop with the compressor. There should be an AIRRR power unit just for that under the cabin steps.
 
Pietro said:
Here I am after 6 days on the boat :smt001 ...the water pump should stop with the compressor. There should be an AIRRR power unit just for that under the cabin steps.
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And once I find this elusive AIRRR power unit. what do I do to turn off the pump when the compressor turns off? Is there a switch or something? Figured I'd ask now, so at 10pm tonight I will know what to do. I will also have to figure out how to remove the cabin steps. Didn't know they moved.

It also ruins my peace and quiet splashing into the water all the time :) I have a collapsable "pirate" looking scope coming in the mail today. Can't wait to stand on the bow underway and use it! haha
 
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br1212 said:
And once I find this elusive AIRRR power unit. what do I do to turn off the pump when the compressor turns off? Is there a switch or something? Figured I'd ask now, so at 10pm tonight I will know what to do. I will also have to figure out how to remove the cabin steps. Didn't know they moved.

It also ruins my peace and quiet splashing into the water all the time :) I have a collapsable "pirate" looking scope coming in the mail today. Can't wait to stand on the bow underway and use it! haha
Click to expand...

That unit turns the pump off automatically. I'll post some pics later :wink:

PS: try to lift the steps, they should come off.
 
My pump turns off too when the compressor stops running. My pump is three years old and the ac stays on as long as the boat is in the water ( 8 months a year)
 
Maybe someone can answer a A/C question for me? My pump stopped working last season. There's no power running to the pump. Is there any way to check the relay under the stairs to find out what's gone wrong? The compressor still cycles but can't cool due to the lack of circulating water from the pump.
Thanks,
Rich
 
I have no pics of the box, only of the plate. I made it because I had to replace the unit.

Whenever one of the two a/c units kicks in, this box starts the pump. When I stopped working, I had to connect the pump directly by-passing the box. I started the pump whenever I needed a/c

P1010189fffff.jpg
 
Okay, I'm going to risk sounding foolish here, but let me add on. Perhaps it will make more sense once I open up and look at it later tonight. So my pump works, which I'm assuming the relay unit under the stairs must be operational in some sense or the pump wouldn't work at all? so either the relay unit under the stairs is not telling it to stop when the compressor stops or my pump is hard wired to the breaker panel thus running immediately when the switch is flipped on?

Again it may make sense when I open it up, but I'd like some idea of how to trouble shoot it later. Whether there is a switch there, fuse, or replace it? Thanks in advance, and sorry for being a pain!
 
br1212 & I are having opposite problems (sort of). I suppose could hard wire it to a switch and bypass the panel; but I'd prefer to see if there is a way to test the panel to find out what went wrong and fix it. If I can't find the problem in the panel I guess hard wiring the pump will be my next step. Thanks for the input.
Rich
 
br1212 said:
...
so either the relay unit under the stairs is not telling it to stop when the compressor stops or my pump is hard wired to the breaker panel thus running immediately when the switch is flipped on?
Click to expand...

That's it!

I found a pic of the pump relay board. It's a simple device. Whenever one of the compressors (up to four) starts, power goes to the circulation pump. Mine was toasted!

Troubleshooting it should be easy: start your a/c and check if there's current where the pump should be connected.
FYI it was 247 $

photo.jpg
 
a few images of the move!

When we got it in the water we were close to the rocks. They told me to put it in reverse and get it out of here. I did, and the boat went forward and not reverse. They put my props on backwards. So then they tell me it will be fine I just need to remember to reverse the shifters as the crane was all ready packing up. I said nope I don't think so. We got the crane back and fixed it! There is enough to worry about without putting that variable in there!

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if I were watching them pushi it out over the rcoks.....I would have soiled myself before they were done
 
yes shortly after that picture I put the camera down and ran over to help. Then I had to jump over the rock pile into the water to start the boat and get it in gear before the wind blew me into them. It was an interesting day for sure!

Had my first longer cruise this weekend. Did about 12 miles saturday on and off plane as my brother was jumping my wake in his 17 foot glastron.I will have to upload the video, it was pretty funny watching another boat go completely air born! However constantly getting it moving to make the wake cost me $$ burned through $200 that day. I was also towing the boat for most of the trip at around 6MPH. I'm sure the extra drag helped in burning some fuel.

Sunday however I putted along without the boat at 1500 RPMs for about 12 miles at 7MPH and it didn't move the fuel gauges at all.
 
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