2017 Z3 Surf Wave/Prop

[hcooperrn]

Elevated is spot on in my opinion -- we're working our way up to those settings, I only have 250# in each corner so far, and run 10.8 to keep the face firm. Need to get our engine issues figured out before I get more aggressive...

The 2419 has been working for us at 5000' -- I'm thinking about getting just a bit more though, because we do have some cavitating when pulling up (smooths out as soon as the Taps3 plates go into action).

And the comments above about depth are spot on -- our lake has gotten low for the season and it shows. When going around the lake, as soon as the reported depth on the gauge went below about 10.5', the wave got short and lost all push. As soon as the depth got back up to 11.5'+, it came back to normal. I was surprised just how visible the change was, you would have thought I had dumped all the ballast.

[JohnnieMo]

Can anybody comment how many RPM they are running on the 2419? I found my 1433 was great listing the boat, but now with the evenly weighted and the suck gate it struggles a touch.

[JohnnieMo]

Can anybody comment how many RPM they are running on the 2419? I found my 1433 was great listing the boat, but now with the evenly weighted and the suck gate it struggles a touch.

[hcooperrn]

I'm at about 3200rpm at 10.8mph, 5000' and having engine issues, though that shouldn't matter too much for speed and rpm.

I'm curious about this 'tweaked 945' though, would love to get my rpm down below 3000 if I still have the hole-shot I need...

[Thegerman618]

Call OJ Propellers and tell them what you want. I have 16 Z3 with an OJ, I was at Powell with North of 3000lbs of ballast surfing 11.4 at 3200 RPM burning 6 GPH.

[JohnnieMo]

Call OJ Propellers and tell them what you want. I have 16 Z3 with an OJ, I was at Powell with North of 3000lbs of ballast surfing 11.4 at 3200 RPM burning 6 GPH.

I run about 3200 to 3500 RPM at surf speeds, evenly weighted plus a suck gate. It's fine but occasionally I get vibration. I'm not convinced it is "lack of prop" that is the problem. It could also be "this prop has been repaired three times", or even some other form of alignment.

[chasinsummer]

I think we did a monster thread on this but I will go over everything really quick.

With the Z and stock weight, you arent going to run in the 70-100% bow weight area, it just wont surf. If running stock weight I wouldnt run anything more then 50%.

Now.. this boat needs weight to really hammer out something insane. It has the most 2 face personality in regards to weight then any other boat I have been in. It doesent top out either, keep adding more and it keeps getting better.

Boat setup is a 2 way street. What people keep forgetting is that this system gives you different ways to get to the same equation within reason. One way in my opinion is best but thats up for debate.

First things first. Weight it down. 400 a side to start and preferably 550-600lbs if you can stomach it. With that extra weight dont even try running a 1235, the boat will laugh at you. I had OJ tweak a 945 for me and now the German is running it. His surf RPM with monster weight is 2800... let that sink in a little, yeah 2800RPM and I think he is north of 3000K just in the rear alone....

Next thing is to shore up the passive draining......... and before you say "Mine doesent leak" just trust me and the rest of us Z owners when we say it does. You can call CHP and ask for some of his valves to run on the drain and vent lines..... I havent ran them, I just plugged mine with marine drain plugs... it was simple effective and easy since when I was filling bags I had to be back there anyway making sure the bag was filling square with all the lead... the valves are the better bet if they work.

Once the passive draining is figured and you have all the extra weight under the stock bags (400+lbs a side) its time to set the settings.

Rear Ballast full evenly and if not doing transfers, I like to run 70/30 or 60/40 in favor of the surd side....... bow weight . This is where some opinions differ about ballast and plate position.

If you run more deployed surf tab then in turn you are going to probably be running less bow weight, the surf plate being further deployed will push the bow over and in turn leverage the rear of the boat out of the water.

I tend to like the plate to do just enough without going backwards in regards to pushing the boat out of the water. I accomplished this by running a little more bow weight to sink the overall boat deeper and pull surf plate back out of the water a little which in turn made the total amount of ballast more usable. Everything working in harmony. The less surf plate gave me a little more height yet the bow weight allowed me to keep the length.

My settings

Taps 3 at 4
Taps 2 between 3-5 (Rider preference here)

Speed around 11.4-12.0. The faster you can go once the weight is correct the more firm the wave gets without losing much of its characteristics.

Hope this helps, I know I have missed thing but its late. Enjoy.

Wow! Thanks for all the help. I can't wait to try these settings out. When you had OJ tweak your prop, did they tweak the cupping? If so, do you know what they did?

Awesome wave by the way. It looks great.


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[chasinsummer]

Call OJ Propellers and tell them what you want. I have 16 Z3 with an OJ, I was at Powell with North of 3000lbs of ballast surfing 11.4 at 3200 RPM burning 6 GPH.

Impressive. Before you and Elevated mentioned OJ, I was pretty set on Acme. I'm going to connect with OJ soon.


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[chasinsummer]

Elevated is spot on in my opinion -- we're working our way up to those settings, I only have 250# in each corner so far, and run 10.8 to keep the face firm. Need to get our engine issues figured out before I get more aggressive...

The 2419 has been working for us at 5000' -- I'm thinking about getting just a bit more though, because we do have some cavitating when pulling up (smooths out as soon as the Taps3 plates go into action).

And the comments above about depth are spot on -- our lake has gotten low for the season and it shows. When going around the lake, as soon as the reported depth on the gauge went below about 10.5', the wave got short and lost all push. As soon as the depth got back up to 11.5'+, it came back to normal. I was surprised just how visible the change was, you would have thought I had dumped all the ballast.

I'm going to have to start slow with Elevated's settings too. Leadwake is having a sale ($2 off per bag) and they're still running the buy 9 get one bag free deal. I'm thinking about picking up 10 bags and splitting them in the back like you're saying. I think it will make a huge improvement.


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