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KP06 03-20-2019 03:13 AM


Originally Posted by Jumpsummo (Post 12352501)
So you think being inaccurate for all angles but level but able to show some slight indication adds fuel to the tank? It's the same fuel. You just showed full when you burned x number of gallons. Wrong. When it indicated half your way was wrong because you dont have half. You have LESS than half when indicating half. You never know except full when it spits out the vent or empty when you run out if pumpable fuel.

The fill goes in the top of the tank. Preferably at the front. The measurement goes in the center as close as possible to the bottom and indicating full correctly. When it says half you have exactly half. If it said 1/8 at the end of last trip you know exactly how much fuel to add to get back to half

Accuracy at all levels means you can plan better so you aren't sucking that last 2 gallons. When the gauge works or not doesn't change the amount if fuel in the tank.

Typically the pickup won't get all the fuel out anyway so zero indication is where you can no longer draw fuel your way it indicates fuel you can't pump.

All this becomes especially important when you have far larger tanks than needed so you need accuracy in measurement in order to know how much fuel to add for the given trip.

My boat carries 300 gallons of fuel. Typical day I burn less than 100. Since 300 gallons weighs near 2000 pounds I need to know accurately where is about 75 gallons in each tank. Then I have a safety factor of 50%. I could cut it closer with more accurate measurement.

Once you leave the dock there is only "Did I bring enough". Knowing the level accurately means you can plan accurately. If all you do is fill you ski boat up and run back to the dock when near empty you dont need accuracy because you are never 44 miles out showing half a tank and half isn't enough to get home because you installed your gauge in the back and rendered it useless.

Calm down pal. There is no wrong or right answer to this. I used to think the same as you and never claimed that due was magically being added to the tank.

Then the last boat I owned had a 150 gallon tank with the sender at the aft end as well as fuel flow senders and fuel consumption totalizer.

When I was making long runs I would always leave topped off and I would know exactly how much I had to start with.

Once the gauge started dropping it was after burning right around 63 gallons every time. It was a very good check to confirm the fuel flow gauges were accurate.

when getting back to the dock, fuel level would show just under half level remaining and consumption gauge would show 110 gallons burned.

At at this point if your level sensor was mid tank youíd likely be showing just about empty, but yes if I wanted to take the wife to dinner before filling back up I still had fuel level information and my level sensor would indicate down to 10 gallons ROB.

There is no right / wrong answer to fuel management and each boat is greatly different.

OP, the boat looks great, Iím sure youíre super excited and rightfully so. Look forward to following this build and seeing the final product.


Diverboy264 03-24-2019 06:02 AM

https://cimg9.ibsrv.net/gimg/www.the...e9f5053295.jpg
https://cimg6.ibsrv.net/gimg/www.the...814b3d07da.jpg
Deck is now glassed in place.

Jumpsummo 03-24-2019 12:58 PM


Originally Posted by KP06 (Post 12352568)


Calm down pal. There is no wrong or right answer to this. I used to think the same as you and never claimed that due was magically being added to the tank.

Then the last boat I owned had a 150 gallon tank with the sender at the aft end as well as fuel flow senders and fuel consumption totalizer.

When I was making long runs I would always leave topped off and I would know exactly how much I had to start with.

Once the gauge started dropping it was after burning right around 63 gallons every time. It was a very good check to confirm the fuel flow gauges were accurate.

when getting back to the dock, fuel level would show just under half level remaining and consumption gauge would show 110 gallons burned.

At at this point if your level sensor was mid tank youíd likely be showing just about empty, but yes if I wanted to take the wife to dinner before filling back up I still had fuel level information and my level sensor would indicate down to 10 gallons ROB.

There is no right / wrong answer to fuel management and each boat is greatly different.

OP, the boat looks great, Iím sure youíre super excited and rightfully so. Look forward to following this build and seeing the final product.


Nothing to calm down about. You gauge was never accurate at any level and I'm trying to explain how it can be accurate at every level and every attitude of the boat. You don't have to listen. You do have to be wrong because those are the facts.

Only knowing how much fuel is in the tank when it's spilling out the overflow is a bad thing. Knowing exactly how much you need to add is very helpful at a fuel dock so you avoid a spill.

Especially if your gauge and pickup reach the bottom rear of the tank you can be very accurate.

I guess my main point is information is valuable. Accurate information is far more useful that guessing. Inaccurate gauge or instruments can get you in trouble. Imagine your depth gauge is off by just 5 feet. Means nothing at 1000 but means a large amount when it indicates 7 and actual is. 2.


stumprunner 03-24-2019 02:01 PM

Iíve nevwr had a fuel gauge on a boat be accurate in 40 years. Now with all the data available, we just fill up then reset use/flow meters. Works like a charm.

jwlsh 03-24-2019 03:01 PM


Originally Posted by stumprunner (Post 12366470)
Iíve nevwr had a fuel gauge on a boat be accurate in 40 years. Now with all the data available, we just fill up then reset use/flow meters. Works like a charm.

Exactly this. Knowing what you've burned and managing that every trip is a far safer way to go. Now, can we get back to the build porn please? :)

jwlsh 03-24-2019 03:06 PM


Originally Posted by Diverboy264 (Post 12365340)

Is there any kind of backing plate for those transom eyes? Where I dock, in addition to the stern docking lines I also need to clip a safety line to one of the transom eyes to stop my boat pushing into next boat over in strong winds, always makes me wonder how much force gets put on them. Also use it for towing our Big Bertha but that's probably ok. Would like to have at least a small plate to spread the force.

Jumpsummo 03-25-2019 01:55 AM


Originally Posted by jwlsh (Post 12366635)
Exactly this. Knowing what you've burned and managing that every trip is a far safer way to go. Now, can we get back to the build porn please? :)

This build has 300 gallons fuel capacity. He's seldom going to need all that so carrying around 1800# of fuel is not a very good beginning to a 100 mile trip. 25% is deemed a safe extra amount. If the iaverage economy is 1 mpg then 125 gal is a safe reserve. You need 300% reserve?

What is the economy with full tanks compared to 1/4?

Here is another part of the formula. The economy varies depending on loading. That extra 1200# some thing he needs to carry will cause the boat to ride different and use way more fuel. So yes it matters and discussions like this belong in a build before the hatches are sealed.

It's so important that it might be useful to have some testing with both a rear and center mounted indicator.


Yes, using the fuel flow capability in the MFD is one of the tools. It's actually very accurate. If it weren't would it be more or less useful? According to some of you it wouldn't matter because you fill you Jon boat's 6 gallon every trip anyway so it should be the same for everyone.

I agree most fuel tanks are horribly inaccurate. These tanks being long front to back it makes a huge difference where the sensor is placed.

stumprunner 03-25-2019 09:16 PM

If all he needs is 150 gallons, why canít he just keep 150 gallons onboard by using Fuel flow meters? Still no need for inaccurate fuel gauge.

Jumpsummo 03-26-2019 05:43 AM

So if he has some quantity. Say 1/4 on the port and 3/8 on the starboard. His engines say he burned 75 gallons from each tank last trip out but the trip before that he trolled on the port engine a good while then added 50 gallons to each tank. Now he wants to go out knowing he's got 75 gallons in each tank.

if the gauges were accurate he just fills to 1/2 both tanks. He added 38 to the port side and 19 on the starboard.

If the senders are mounted in the rear and he fills to 1/2 he's going to be short by some unknown quantity. More if he's in the water vs.on the trailer. He could spit ball it but he's be guessing as to what quantity is in the tank. So add more some will say. How much more? An extra 10? An extra 50?

What is Jump after here? By the time we get to #7 it would be nice to have accurate measurement. If we don't I'm going to install both and prove what a difference it makes. You would think someone would have researched this but I've not found it published. I do know my Pro Line center mounted sender is 100% accurate, 100% of the time. It doesn't even move much when going on plane.

pooldoo73 03-26-2019 06:58 AM

Is there any way you guys can move the fuel sending location discussion to a new thread?

Jumpsummo 03-27-2019 11:02 AM

I don't complain when you lazy people ask the same question answered 6 times already on each and every Horizon 3000 topic. One of us is on topic. Once that lid is closed it's too late.

BluewaveBay 03-27-2019 11:57 AM

Shut up about the damn fuel sensor, this is a build thread. You can argue about that crap elsewhere.

Diverboy264 04-19-2019 11:07 AM

Update
 

Diverboy264 04-19-2019 11:12 AM

Also received pictures of the Hardtop that will go on.
https://cimg9.ibsrv.net/gimg/www.the...2dfa8a9ba8.jpg
https://cimg1.ibsrv.net/gimg/www.the...7a69f7ad67.jpg

Diverboy264 04-19-2019 11:13 AM

Motors have arrived!
https://cimg0.ibsrv.net/gimg/www.the...36593023eb.jpg

frankpunt 04-19-2019 12:21 PM


Originally Posted by Diverboy264 (Post 12449493)

300's ?

UCF 04-19-2019 12:23 PM


Originally Posted by Diverboy264 (Post 12449493)

Damn. I need to get my ass in gear.

It's looking good. :thumbsup:

I'm hopefully going to be down next week, I'll check it out.

Paul Barnard 04-19-2019 12:42 PM


Originally Posted by Diverboy264 (Post 12449476)

Hey bud, where do you get off interrupting an argument about fuel with build pics? That's kinda' rude don't you think?

Diverboy264 04-19-2019 01:29 PM


Originally Posted by frankpunt (Post 12449704)
300's ?

Yes, Suzuki 300's.

Diverboy264 04-19-2019 01:40 PM

My current Console layout.
-No MFD for the motors since Suzuki hasn't released them. Instead, I will have dual C-10 displays behind the wheel.
-The VHF mic will be moved up and out of the way, so no dangling cords.
-GPS antenna puck will be moved further back
-Flush mounted compass will reside in the center
-Also have 2 cup holders to the right of the throttles going in.
https://cimg4.ibsrv.net/gimg/www.the...b883765c57.jpg


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