Sundancer ACTUAL weights

[Yendor]

I don't have, nor ever had, any desire to "win" as you have chosen to term it.
It was not my intent or desire to appear condescending in any way,
only to try and help you see an angle (or now two) that I perceived you overlooked. My bad.

I wish you luck attaining your desired end.

 

[aerobat77]

still doesnt solve my issue of wondering if my weight is ok in comparison to others. If I can get an answer on that, then motor performance is my last mystery to solve.

Your weight is as it is . When its 15k than its 15k - what do you want to do against it ?

Regarding the prop : cannot say what the numbers stand for exept the "r" stands most probably for right turning but a ruler and 10 seconds of work would have tell you its surely not 12 inch in diameter i guess.

Concentrate on the motors

 

[Creekwood]

@Joshieburger for your reference my '97 330 with carbed 7.4 vDrives has the OEM props, 17x17. My cruise speed is 3400 rpm and 30-31mph. Idle is about 650rpm. I almost never try to run at top RPM WOT but I think mine was slightly low at 4200 or maybe a bit more. I have no need to run at WOT though and the boat feels like its not working hard at all in that 3200 to 3400 rpm range.

 

[Joshieburger]

Your weight is as it is . When its 15k than its 15k - what do you want to do against it ?

a higher weight will make the boat slower, and therefore my performance numbers will most likely be down. So instead of worrying that my motors may be low on power, or the transmission isnt efficiently running, or the props are wrong, I want to eliminate any hull specific issues first. My bottom is clean and now I have fresh props...

Long story short, I want to elimintate the possibility of "...well your boat is 4,000 lbs heavier than its supposed to be (or others of similar model year), so of course it isnt gonna be as fast, perform the same, etc."

I dont feel like im asking for much. Just what other boat owners are tracking their weight to be. Then we spiral out of control...

 

[Joshieburger]

@Joshieburger for your reference my '97 330 with carbed 7.4 vDrives has the OEM props, 17x17. My cruise speed is 3400 rpm and 30-31mph. Idle is about 650rpm. I almost never try to run at top RPM WOT but I think mine was slightly low at 4200 or maybe a bit more. I have no need to run at WOT though and the boat feels like its not working hard at all in that 3200 to 3400 rpm range.

Thanks for the helpful reply and the data. According to the service manuals I have seen, assuming you dont have a MAG, your WOT RPM should be 4000-4400, so you should be perfect. Cruise should be about 75% of WOT so around 3000. I don't plan on running WOT, I only used that as an example that these two motors would produce the same results at that point, but I believe they will throughout the rpm range as well...

Somehow, this thread turned into solely focusing on my motors... I just want to eliminate the possibility of me being overweight, so I can jive average performance numbers with my own, ONCE my engines are running normally. And I am going to keep them 1x Carb and 1x FI just to get good comparative data when they are both running as they should. I think it's my duty being in a unique situation. What if someone else has to replace a motor quickly and only has a carb option? You're welcome future community! lol.

 

[Golfman25]

Thanks for the helpful reply and the data. According to the service manuals I have seen, assuming you dont have a MAG, your WOT RPM should be 4000-4400, so you should be perfect. Cruise should be about 75% of WOT so around 3000. I don't plan on running WOT, I only used that as an example that these two motors would produce the same results at that point, but I believe they will throughout the rpm range as well...

Somehow, this thread turned into solely focusing on my motors... I just want to eliminate the possibility of me being overweight, so I can jive average performance numbers with my own, ONCE my engines are running normally. And I am going to keep them 1x Carb and 1x FI just to get good comparative data when they are both running as they should. I think it's my duty being in a unique situation. What if someone else has to replace a motor quickly and only has a carb option? You're welcome future community! lol.

How are you going to eliminate the possibility of being overweight? You either have too much stuff on board (which is doesn't sound like) or you're holding a lot of water in the core (maybe/maybe not). As I said above, I think you're in a reasonable range. Time now for some test runs and some numbers. Then work from there.

 

[Joshieburger]

How are you going to eliminate the possibility of being overweight?

By getting data from other users on how much they weigh. Then one can reasonably assume that the average is correct, some will be high due to water intrusion and some will be dry and perfect numbers. Its the "average" that I would like. It would be great to know (knowing that I do indeed have a couple soft spots) how MUCH water I am possibly holding. Wouldnt using all these owners in this community and what they know about their boat be a great free way of finding that out? I know not every boat is the same, but an average is an average which is perfectly fine for me.

As I said above, I think you're in a reasonable range.

This is noted, and is helpful. Thank you.

For everyone else that would like to help out, see below for Other good examples of what I am looking to accomplish in this thread:

Hi there! 1997 Sundancer 330DA: 11,700lbs NET (from Sea Ray), Travel Lift WEIGHT: 15,000lbs (no water, 80 Gallons of fuel)

Good afternoon! 1996 Sundancer 330DA: 11,700lbs NET, Travel Lift WEIGHT: 12,500lbs (full water, full tanks)

etc...

It would be cool for other models to chime in too for their own data. As we have sort of seen already in this thread.

 

[Creekwood]

Well it won’t be a help to you till mid October, but I will post my travellift weight when I am hauled this fall. I have never checked. It’ll be interesting to see what it is.

 

[Golfman25]

By getting data from other users on how much they weigh. Then one can reasonably assume that the average is correct, some will be high due to water intrusion and some will be dry and perfect numbers. Its the "average" that I would like. It would be great to know (knowing that I do indeed have a couple soft spots) how MUCH water I am possibly holding. Wouldnt using all these owners in this community and what they know about their boat be a great free way of finding that out? I know not every boat is the same, but an average is an average which is perfectly fine for me.



This is noted, and is helpful. Thank you.

For everyone else that would like to help out, see below for Other good examples of what I am looking to accomplish in this thread:

Hi there! 1997 Sundancer 330DA: 11,700lbs NET (from Sea Ray), Travel Lift WEIGHT: 15,000lbs (no water, 80 Gallons of fuel)

Good afternoon! 1996 Sundancer 330DA: 11,700lbs NET, Travel Lift WEIGHT: 12,500lbs (full water, full tanks)

etc...

It would be cool for other models to chime in too for their own data. As we have sort of seen already in this thread.

You're assuming we are out there weighing our boats. My guess is we are not. Which is why you have minimal response vs the number of owners on this site.

 

[Joshieburger]

You're assuming we are out there weighing our boats. My guess is we are not. Which is why you have minimal response vs the number of owners on this site.

And thats perfectly fine. I wouldnt expect people that dont know the weight of their boats to comment on the weight of their boat... Im a pretty reasonable person. This post has only been here a day, so we will see as time goes.

 

[Joshieburger]

You're assuming we are out there weighing our boats. My guess is we are not. Which is why you have minimal response vs the number of owners on this site.

Love the 370 model by the way. I'm jealous. Maybe when this one sinks!

 

[Joshieburger]

Well it won’t be a help to you till mid October, but I will post my travellift weight when I am hauled this fall. I have never checked. It’ll be interesting to see what it is.

Thanks for the positivity! I am really curious to know as well.

Most people dont think to ask when they get hauled out. Would be cool for them to know that they can and to have an idea of what they are pushing.

 

[keokie]

You're assuming we are out there weighing our boats. My guess is we are not. Which is why you have minimal response vs the number of owners on this site.

Correct. You'd have to have the same boat and also have weighed it. I have weighed my 310... on the trailer, and I don't know how much the trailer weighs other than a guess. I do still read threads about different boats/problems than mine out of interest, the possibility I might learn something, and the possibility I might have something to offer. If I had a twin engine boat with performance issues and mis-matched motors, those mis-matched motors would be a part of my every thought regarding the matter.

The OP mentioned the thread spiraling out of control, but I don't think it has done that. Yes, there has been some curiosity about his power plant set up, and some gentle and polite criticisms. I haven't seen any insults or even condescension about it (if I missed any disparaging comments, my apologies). But I've been on this board for a long time, and I don't recall anyone with a twin engine set up like the OP's. The standard has always been to go through great lengths to 'match' motors when replacing one in a twin set up.

 

[techmitch]

Thanks for the positivity! I am really curious to know as well.

Most people dont think to ask when they get hauled out. Would be cool for them to know that they can and to have an idea of what they are pushing.

Do you happen to know when the last time the scale on the lift that pulled your boat was calibrated?
Also, I'll bet those soaking wet straps that lift the boat have some serious weight to them also.

 

[Scott215]

Dry weight is around 13,300 on Internet

 

[Joshieburger]

Do you happen to know when the last time the scale on the lift that pulled your boat was calibrated?
Also, I'll bet those soaking wet straps that lift the boat have some serious weight to them also.

Good point. But they couldnt lift me with their forklift and it was supposedly 14k capacity or something…

 

[Golfman25]

Correct. You'd have to have the same boat and also have weighed it. I have weighed my 310... on the trailer, and I don't know how much the trailer weighs other than a guess. I do still read threads about different boats/problems than mine out of interest, the possibility I might learn something, and the possibility I might have something to offer. If I had a twin engine boat with performance issues and mis-matched motors, those mis-matched motors would be a part of my every thought regarding the matter.

The OP mentioned the thread spiraling out of control, but I don't think it has done that. Yes, there has been some curiosity about his power plant set up, and some gentle and polite criticisms. I haven't seen any insults or even condescension about it (if I missed any disparaging comments, my apologies). But I've been on this board for a long time, and I don't recall anyone with a twin engine set up like the OP's. The standard has always been to go through great lengths to 'match' motors when replacing one in a twin set up.

My opinion, for what it's worth (and not that it's worth very much), is you get to a point where you're confident in the engines -- good compression, tune ups, fuel, etc. Test with stock props, and see what your performance numbers are, then work from there. The weight is what it is, and you'll just adjust the props until you get to that sweet spot.

 

[Joshieburger]

My opinion, for what it's worth (and not that it's worth very much), is you get to a point where you're confident in the engines -- good compression, tune ups, fuel, etc. Test with stock props, and see what your performance numbers are, then work from there. The weight is what it is, and you'll just adjust the props until you get to that sweet spot.

Sorry, I got a little defensive in previous posts, but I do value the input.

frustrations came from input that was trying to answer anything but the questions asked

 

[Golfman25]

Sorry, I got a little defensive in previous posts, but I do value the input.

frustrations came from input that was trying to answer anything but the questions asked

You get to ask the questions. We get to answer. Not uncommon for the answers to be all over the place.

 

[keokie]

Sorry, I got a little defensive in previous posts, but I do value the input.

frustrations came from input that was trying to answer anything but the questions asked

And the weight question is important. As has been discussed, it can indicate an enormous structural issue. I doubt you have that here, though. The limited experience I have with verifying Sea Rays' weights is that in an "in use" scenario, they are always much heavier than Sea Ray specs.