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Old    Paul Chaput (rugbyballa3)      Join Date: Feb 2013       06-10-2013, 12:04 PM Reply   
my axis a22 is getting amazing fuel economy 12-15 hours per 45 gal. i am wondering what other boats are getting?
Old    RB (boardman74)      Join Date: Jul 2012       06-10-2013, 12:25 PM Reply   
Your burning 3 gallons per hours at wakeboard speed? That seems way to low to me. Thats towing people with ballast? Most 350's are in that 6-10 gallon per hour range when loaded pulling. This seems really low to me and unrealistic.

In your profile it looks like you are running like 4000 in weight. I just don't see any way possible you are only burning 3 gallon per running hour, or even 4.

Last edited by boardman74; 06-10-2013 at 12:27 PM.
Old     (CarZin)      Join Date: Feb 2011       06-10-2013, 12:33 PM Reply   
With the weight you are running for Wakesurfing, I don't understand how you can get those numbers. If you are, then there is likely something wrong with your engine, as it is running REALLY lean, and you'll burn it up in no time.

However, with that said, fill the boat up completely before your next run, record the actual time with the motor running, then fill it back up again and give us the results. I'll believe you if you follow that procedure. I have found that if I wait a few days to fill up 1) I over estimate the amount of time I had the engine running and 2) as a result, get a much lower than actual GPH burn rate.

We always fill the boat up at the end of the day, and always start the new day with a full tank. So it is much easier to get precise readings on your fuel consumption. It can also be depressing. Found out that it takes me about $50 in gas to get to my favorite spot on the lake and back.
Old    Andy Graham (ottog1979)      Join Date: Apr 2007       06-10-2013, 12:47 PM Reply   
2002 Sanger V210 with 350 Mag MPI tow sports engine, stock 13x13 prop, 1,250 lbs ballast.
Sanger Gas 'Mileage'.pdf
Attached Images
 
Old    Paul Chaput (rugbyballa3)      Join Date: Feb 2013       06-10-2013, 1:02 PM Reply   
my lake is small so no running and i am basically only surfing. hours i am going off of hours on the boat so i filled up at 34 hours and i am at 46 hours now and i need to fill up before i take it out again. and its not running lean. i can recheck the plugs but its seems to be running great, and the exhaust smells normal. not to rich not to lean. ( i use to be a ford mechanic) i can get 2 good days of surfing out of one tank. a good day is 6-8 hours. depending on teaching people and weight in the boat. and if anyone wakeboards or not.
Old    Eric Scott (phillywakeboarder)      Join Date: Sep 2008       06-10-2013, 1:12 PM Reply   
Andy - how long have you been waiting for the opportunity to post that chart up! It's amazing! Makes me want to start one for myself.
Old    Chris (cjh1669)      Join Date: Apr 2005       06-10-2013, 1:14 PM Reply   
I have no idea, my weight and use varies so much that I'd really have a hard time figuring it out.
Old    Charlie Koch (cwkoch)      Join Date: Aug 2006       06-10-2013, 1:19 PM Reply   
I kept a similar chart on my boat for 2 seasons.... Gave up now that I fill with fuel caddies at the dock....

My boat is a 2010 Wakesetter VTX. 350 Monsoon. I was averaging just under 4.0 GPH. This is 90% hydrofoiling- full ballast, no wedge, 24 MPH. The other 10% was surfing. Full ballast, wedge.
Old    RB (boardman74)      Join Date: Jul 2012       06-10-2013, 1:29 PM Reply   
When the time is 100% surfing that makes more sense. I just checked a few boattest mags I have and a 18 foot bayliner with a 3.0 liter burns 5.6 gph@24 mph so no way loaded boats wake boarding at 21-24 mph are only using 3-4 gph. Now if all your time is idling and surfing thats a horse of a different color!!
Old     (CarZin)      Join Date: Feb 2011       06-10-2013, 2:03 PM Reply   
Well, ballast makes a huge difference. The 1,250 pounds of ballast on the chart above is 1/3 the ballast most boats run for a very good wave.
Old    Paul Chaput (rugbyballa3)      Join Date: Feb 2013       06-10-2013, 2:21 PM Reply   
dude on another thread was talking to me his enzo ran threw 34 gal in 4 hours hahahaha looks like i will never be buying an enzo.
Old    RB (boardman74)      Join Date: Jul 2012       06-10-2013, 2:28 PM Reply   
There was a thread a while ago about the G23 being north of 10gph.
Old    Delta Force (wakebordr11)      Join Date: May 2001       06-10-2013, 2:32 PM Reply   
Quote:
Originally Posted by rugbyballa3 View Post
my lake is small so no running and i am basically only surfing. hours i am going off of hours on the boat so i filled up at 34 hours and i am at 46 hours now and i need to fill up before i take it out again. and its not running lean. i can recheck the plugs but its seems to be running great, and the exhaust smells normal. not to rich not to lean. ( i use to be a ford mechanic) i can get 2 good days of surfing out of one tank. a good day is 6-8 hours. depending on teaching people and weight in the boat. and if anyone wakeboards or not.
Does your boat count hours when the key is turned and you're listening to the radio? How many hours do you spend idling and not moving?

Sorry, I call HS on those numbers... Wake surfing isn't that fuel efficient...
Old     (CarZin)      Join Date: Feb 2011       06-10-2013, 2:43 PM Reply   
Quote:
dude on another thread was talking to me his enzo ran threw 34 gal in 4 hours hahahaha looks like i will never be buying an enzo.
That is 4 hours of actual wakesurfing and long runs (like 8-10 minute runs without falling). Less than 8 gallons per hour, which is pretty damned good for a boat with 72 gallons of fuel onboard, 4 people, and 4,000 pounds of ballast and a dry weight of 4,500 pounds. Plus, I have a 23 foot boat compared to your 22 and an extra 1,000 pounds in dry weight over yours.

I simply do not believe that you have 5,000 pounds of ballast on your boat running at 3-4 gallons per hour. I think when a lot of people say they wakesurfed for 4 hours, they actually sat on the boat for 2 hours screwing with bags and changing riders that can't stay up for more than 1 minute without falling, then idling back to the rider. I'm not saying you are attempting to lie, but I think there are some factors at play here that you haven't fully recognized or realized.

I did have a 21 foot Supra with an Indmar prior to the Sv233, and it wasn't far off from the 8 GPH in the Enzo.

Last edited by CarZin; 06-10-2013 at 2:51 PM.
Old    Chris Dirty (Dmac420sj)      Join Date: Mar 2012       06-10-2013, 3:00 PM Reply   
Sanger wins again!!! Lmao
Old    Johnny (johnny_defacto)      Join Date: Sep 2006       06-10-2013, 11:29 PM Reply   
I believe Paul could be getting those numbers. I am getting similar GPH in my 2011 A22 with the 335 CAT motor.

I always run my tank full, fill it up after I ride... always. So I recently put 8 hours of almost non stop engine running (one 15 minute break for lunch and only sometimes would I cut the motor to change riders) during a learn to ride day with our local wake club. I am being conservative, but 7 hours of run time is what I am using, and no, my hour meter does not run unless my engine is (plus I do not have my key turned to "run" or "on" unless the motor is running as I have "accessory" for my stereo when I turn the key left). I used 22.5 gallons of fuel exactly, used the same exact pump on the same exact day.... that is 3.2 gph.

2011 A22
335 CAT motor
ACME 1235 (I have had same results with the Cinco 5 blade as well)
approx 4000 lbs of ballast, water and lead.
Full fuel
gear
No less than 6 people at all times... 6-10 all day long.
Rode with full ballast 25% of the time (plus a set with full ballast and 10 adults with a pro for a demo)
Half ballast (2k plus people) 50% of the time
No ballast (650 lbs of lead only, plus people) 25% of the time.
I also do not run the wedge, which I think may kill GPH, not sure though.

I run full ballast most of the time and get approx 3-4 gph all day long.

On another occasion we rode hard for 4 hours with full ballast half the time and half ballast 1/2 the time and we only put in about 14 gallons afterwards.

I thought maybe I was lucky and got a "wednesday motor", but these numbers are a common thread with Axis owners... that, along with banging wakes.
Old    Paul Chaput (rugbyballa3)      Join Date: Feb 2013       06-11-2013, 8:55 AM Reply   
Quote:
Does your boat count hours when the key is turned and you're listening to the radio? How many hours do you spend idling and not moving?

Sorry, I call HS on those numbers... Wake surfing isn't that fuel efficient...
not much idle time and i have a cabin so i sit and listen to music on my ipod dock. i know its seems crazy and i dont run any where biggest run might be 30 sec- 1 min. and even them we can idle over there in that time. hahahaha its nice being on a small lake and having a cabin on that lake.
Old    A.J. West (you_da_man)      Join Date: Sep 2009       06-11-2013, 9:35 AM Reply   
My 2011 Axis A22 with 335 motor is not seeing those low numbers, especially surfing.
Old    Justin Harrelson (skiboarder)      Join Date: Oct 2006       06-11-2013, 9:42 AM Reply   
I put about 3500# and a wedge down specifically to make it less efficient in the water (plow a bigger wake). If it took out the weight, the wedge, stereo equipment, tower and all of the seats, I have no doubt that it would burn less gas, but the experience would be kinda lame.

Nothing about boating is cheap. I don't think one boat to the next will render any savings on fuel. Even if there is a measurable difference, it is tiny in comparison to the other costs of ownership. If you want to improve your fuel economy, lose the weight (and the wake).
Old    Mase (superair502)      Join Date: Mar 2010       06-11-2013, 10:26 AM Reply   
I am running like 5000 lbs and the 2315 prop in a 2012 a22 without cats and the 335 and we did the math out to like 12 dollars per set. We rode long sets also. I did the gph and I was right at 5 which is even better than I got in my 2001 nautique 210 with less weight and higher pitch prop. The a22 does seem to be amazingly efficient to me as well.
Old    Mase (superair502)      Join Date: Mar 2010       06-11-2013, 10:27 AM Reply   
Can't remember the exact gph I'm going to do it again today.
Old    Andy Graham (ottog1979)      Join Date: Apr 2007       06-11-2013, 10:29 AM Reply   
Eric Scott - I just like measuring these things for fun. It's easy: each time I fill I write down the gallons on a pad in the truck, check the boat hours & write that down too. Eventually it gets to an Excel spreadsheet on my computer.

I re-checked the math and had the average GPH wrong (after previously copying the formula to add more date lines). Here's the correct average GPH over 317 hours of use:
Attached Images
 
Old    Justin Harrelson (skiboarder)      Join Date: Oct 2006       06-11-2013, 11:00 AM Reply   
I agree that is it a fun math problem. If nothing else.
Old    Andy Graham (ottog1979)      Join Date: Apr 2007       06-11-2013, 11:04 AM Reply   
As you can see by the variation in my first chart, a day or two calculation would not be a good indicator of long-term average. Your GPH varies widely based upon how much boarding, how far you go to get there based on what speed, idle-cruising or not, etc.
Old    Mase (superair502)      Join Date: Mar 2010       06-13-2013, 11:07 AM Reply   
I did a single say average of my a22 yesterday and came up with 5.6 gph. I have the 335 with the 2315 prop. No cats on the motor. Ballast is 1100s in the rear, mushroom sack 950, factory 900, bow triangle and wedge. All topped off. Pretty decent if you ask me. We rode right from the ramp and all the way back when done. No unweighted driving or idling.
Old    Paul Chaput (rugbyballa3)      Join Date: Feb 2013       06-13-2013, 1:04 PM Reply   
mason was that surfing or wakeboarding?
Old    Bruizza (bruizza)      Join Date: May 2009       06-13-2013, 1:13 PM Reply   
Our Axis had the Raptor 400 and we ran 3600lbs of weight plus wedge consistently for wakeboarding and it burned easily 6-8gph. There were some Saturdays we couldn't make it the whole day without pulling the boat off and refilling it. Sounds like the smaller engine is much more fuel efficient.
Old    Mase (superair502)      Join Date: Mar 2010       06-13-2013, 3:37 PM Reply   
That is wakeboarding. Saturday I will try to get some gph info on surfing the axis but I can for sure guarantee you it will be under the 5.6 wakeboarding. When propped with the 2315 I think the small engine on the axis is the way to go as the torque curve on indmars site shows similar numbers to 4800 rpm on all motors. And the 350 seems to be way more efficient. I can easilt get 6000 lbs without wedge or 5500 with wedge out of the water and on plane with that prop with 4 people in the boat so im not sure why anyone would want more motor unless they want to barefoot or ski. the wake is one of the 3 biggest I have ever ridden only boat by x stars and 230s with 6000lbs + and barely bigger at that and a 2013 x star which was quite a bit bigger but had 10 people and 5000 lbs ballast.
Old    Mase (superair502)      Join Date: Mar 2010       06-13-2013, 3:38 PM Reply   
*^only Beat
Old    Mase (superair502)      Join Date: Mar 2010       06-13-2013, 3:40 PM Reply   
Bruizza, with the 1235 I wasnt seeing those numbers but I dont think I have ever been out a whole day and ran out of gas. We have never ran less than 4000 lbs even with the 1235 and one day I pulled 12 sets wakeboarding and still had an 8th of a tank left.
Old    Seahawks #1 Fan Robert T (cwb4me)      Join Date: Apr 2010       06-13-2013, 3:44 PM Reply   
Gas consumption is a funny thing.Just like fishing , your results may vary.
Old    Gene Williams (gene3x)      Join Date: Apr 2005       06-13-2013, 3:51 PM Reply   
I am curious if anyone has run numbers on the older 22SSV. In my experience seems to have the most efficient hull when weighted heavily. Maybe it just seems like it but everyone else I talk to seems to be throwing more money at their boat when slammed.

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