Axis Wakeboard Boat Forum

In the search of trying to figure out my summer long planing issue in my 16 A22 with the 409 I went out with the dealer last week on a 2017 A22 with the 450HP. For the sake of those who do not know the difference in these boats is not only the 40HP in the motors but also in the Trans ratio set up.

Boat had the High Torque ACME 2419 prop on it (what mine came with before having my custom OJ prop built). Result = with all ballast full (750's in the rear) and wedge down the boat hit the wall at 13.4mph and would not plane out to wakeboard speed. Salesperson that was with me moved himself from the observers seat up to the front and no change.

Bottom line altitude makes a TON of difference in these things. If a 450 cant get it done up here and 350's are pushing 1100's at sea level in these boats im just a little dumbfounded. Stinks to think that I would have to go up to the supercharged 550HP motor to get a boat from AXIS that can plane at my altitude (5300 ft) with full ballast and wedge.

On a positive note my dealer is being awesome (Tommy's) and the new Electronic throttle on the 17 is amazing. We will see where it all goes in the next few months. In the mean time I am off to Lake Powell on Wed and am excited to see what dropping a few thousand feet does to "Wake Up" my 409. Just wanted to share with the group......

So you tested with the rear slammed, wedge down, and no additional bow weight other than 1 person moving from mid-ship forward? I know elevation can play a big factor but it sounds like your weight ratio is off to me.

What was the RPM? Especially at higher altitudes, you will need to have the ability to get up on the engine's power curve.

Even at sea level you would have a very hard time planing out with 3000lbs in the rear....2000lbs of water plus wedge acting as another 1000lbs. Did u even have a P&P bow bag hooked up? If so you had about 1000lbs at best up there between the hard tank and P&P bag, you easily need another 1000lbs up there. Figure how much weight you want to run and run a 60/40 split to start and then start adding more to the bow or drain some out of the rear.

I am at the same elevation as A22inCO, I have a 2015 A20 with the 350. I have 600's in the rear , 900 in front plus 300 pounds of shot in the nose 2419 prop. With four people, full ballast and the wedge down I also can't get to surf speed, 10.1. Altitude kills... The dealer has been helpful.

My neighbor with a A22 and the 450 can't plane with full ballast and more than 6 people.

It looks like you may need the supercharger to be slammed at altitude.

Just came back from Powell. Have 750's in rear and 650 bag up front. With 409 and stock high alt prop. Did just fine. I run full ballast when wakeboarding. It did take a little time to plane out but for surfing I added another 2 325 bags on rear bench and surf side. Had no problem getting to surf speed. I'm in San Diego and have no problems at all with maxing out with 8 people or at havasu.


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Oh and it's an A24


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Boat had full PnP including the bow sac 650lb full. In my boat I run an extra 200lb of led in the nose on top of this set up so rest assured I have my weight ratios well dialed and a good bit of knowledge here. It was a true Apples to Apples test and I was shocked that the boat could not get on plane with the big motor and 1.72-1 trans ratio.

Given that my struggles here were long standing and well noted I thought it would go without saying that all of the other bags + hard tanks were full. In my description I just tried to let everyone know the variables that were sure to be asked (rear bag size and prop).

There are a few of us here in CO that are running into the same "wall" with the altitude. AXIS is apparently working with the dealer on an even more aggressive prop but what this test tells me is that my 409 is hopeless on getting this to plane if the extra 40hp and taller trans can't get it done.

Well I guess the higher alt guys just have to go to lower alt to boat. It's just a fact that boats/ vehicles can't run at the max they should in higher alt. I've seen a lot of posts and they are always the same thing. Over and over


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T22 with 450 here. I'm at 4K' and performance is "just OK." Had to add an integrated bow sack (on top of seats) and 150 in lead in the bow to get to surf speed with 900s in the rear (1.72/2249). Very much doubt it'd plane out for wakeboarding weighted like that (never tried).

Sometimes we go down to 2k' and it's like the boat has a supercharger. So much more power down there.