Cat Walking Problem

Ochocoronas

Ochocoronas

Location
JAX FL
More time on my 50cal and I am starting to realize when I land a lot of my stuff the ski either wants to cat walk a lot or it does not want 2 hook up fast enough to recover even though the engine is turning good RPMs. Engine gets up to rpm ( no bogging,) it just does not get the bow down. I can lean way over the pole dig a knee into the firewall but it still cat walks and I spin in circles. Running a set back 148 mag 7/14 cut back with a ported 701 61x dialed to perfection and then some. Ski hits really good other then during my landings. If anything I would say the prop is spinning and not grabbing enough water. I removed the Intake grate and that helped a little.

So my question is..what direction should I go with the prop?
Any other advice would be great.
 
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Tyler Zane

Tyler Zane

Open Your Eyes
Location
Panama City Beach, FL
Let the rpm's settle down a bit so your pump intake track can fill up with water. Sometimes if the nose is to far up to get it back down, I'll get off the throttle and let it fall to one side. Once the nose leans over to the side enough I crank the bars in the same direction, punch it and away I go.
 
Harbor

Harbor

Location
Stockton
^^^^^ if you can do what tzane suggested and be good id go that, simple no adjustments to ski....

I also land tail deep noise high and had trouble riding out. Not a 50cal... I moved my foot holds forward and shortened the poll. I was just to far back I felt. My longer surf ride plate pushed the noise down to, but for flat water set up wake practice it seemed inappropriate so I kept the shorter one on. Sometimes I push the bars down too on landing as well as feather the throttle, goose it once or a couple times lightly when I land to start bring the noise down then a couple more times as iam riding out.
 
Ochocoronas

Ochocoronas

Location
JAX FL
No.... Its in the pump/prop , even just little 180s the prop has a hard time getting hooked back up. The prop does seem to spin out. This does not happen all the time but its happing more than it should with a set back 148 mag pump. If I hit and hold the throttle wide open from a slow roll the motor will get right up to the rev limiter. It hits good if you just blip the throttle from a slow roll but when landing blipping the throttle does not work so well. When at a good cursing speed it does not get up to the rev limiter as fast when I hold it wide open, it rips to full speed.
 
Ochocoronas

Ochocoronas

Location
JAX FL
So if I keep my current turd I assume I would need a smaller pump? How big of a turd do you recommended I get if I want to keep my pump?
 
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TheBuzzard

TheBuzzard

Location
the jetski grave yard
the pump isn't the problem. power to weight ratio is all wrong. too heavy and not enough power. I've never really had much between 701 and 1000 so I cant say what below 1000 will work. I did have a nice dasa 850 one time in an XFT but it was all setback and circle wheelied due to center of gravity, more than lack of power and it had a stock 144 with TBM pump stuffer and it flatwater flipped. when I heard they were shipping out that big prop in that 148 pump, I knew the turd 701 guys were going to have problems.prop too big for a 701
 
TheBuzzard

TheBuzzard

Location
the jetski grave yard
my bad, I didn't see the 7/14 prop but that just confirms that the problem is the 701 power. 701 is never going to just holeshot you out of a dead stall unless you and the hull weigh nothing. a smaller prop will give more bottom end or shim it forward to make the engine rev up faster to get in the power earlier. the problem is you'll always be chasing your tail with a 701..............what the hell is cat walking?
 
Mcarp6

Mcarp6

Location
Southern New Jersey
Ochocoronas said:
More time on my 50cal and I am starting to realize when I land a lot of my stuff the ski either wants to cat walk a lot or it does not want 2 hook up fast enough to recover even though the engine is turning good RPMs. Engine gets up to rpm ( no bogging,) it just does not get the bow down. I can lean way over the pole dig a knee into the firewall but it still cat walks and I spin in circles. Running a set back 148 mag 7/14 cut back with a ported 701 61x dialed to perfection and then some. Ski hits really good other then during my landings. If anything I would say the prop is spinning and not grabbing enough water. I removed the Intake grate and that helped a little.

So my question is..what direction should I go with the prop?
Any other advice would be great.
Click to expand...


I am running a 6/14 on my 148 on my 718 dual carb with a PFP in my Tigercraft and have had better luck than when I had a 9/15 skat cutback (I was spinning and kind of over propped) I still don't believe I am right on , but I have good results thus far.

Pump tuning would probably help, I played around with it opening up bore sizes on the nozzle , spacing the prop with a washer.


I am no tuner or expert, I'm just sharing my experience that's all if it helps any.


Sent from my iPhone using Tapatalk
 
Ochocoronas

Ochocoronas

Location
JAX FL
Thanks! Think I will just add a spacer to see what happens 1st.

What size engine would have enough azz to turn a 148 7/14 at the proper speed? Just a rough idea
 
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x2mafia

x2mafia

Maximum effort
Location
WA
Well my recommended pitch for my 5mil 838 with a TNT v2 was 9/15 for 148. And it rips from bottom to top.

And I was recommended the 7/14 for my 61x and this is in my predator which may be a little heavier than your ski.

What intake grate do you have
 
Ochocoronas

Ochocoronas

Location
JAX FL
205 Intake . I prefer riding without it. I noticed it did help the problem a little and it losens up the ski to suit my style better.
 
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