300 ZUKE Owners - AV Plate running Height and Prop
 

Just ran my new to me sceptre with a 300 zuke and bracket. Does anyone have AV plate measurements from Bottom of Keel? Even it its transom mounted. I only have 2.5 inches of movement on the Engine Holes. Trying to decide if that's going to be enough or if i should just stuff on the 4" jack plate now and be done.

Total PIA to move the engine up.... and once its close and i put on a Merc Rev 4 prop it will probably need to go up again... Let's just say my AV plate is Buried.

I know these seacrafts like to be a couple inches high as it is.... setback is 30 inches on a 30 inch shaft motor. Right now AV Plate is only 3.8 Inches above the bottom.... and I am not sure 2.5 is going to be enough. I thought i read where last year where someone was almost 7 inches up...?

Any help and or measurements Greatly Appreciated....

Thanks Robert

I am at the highest mounting hole sitting directly on the transom.sounds like you might need to be in the highest hole on the bracket.

Snookered Thanks... do you have any idea how high your AV plate is above the Bottom?

1.5 inches on mine with a 10' bracket. The boat you bought was well set up and squeezing about all you're going to get out of it. Also the Zukes hate Rev 4 props and most all Merc wheels due to their smaller diameter and blade surface area. Gearing n Zukes is way different then Merc and they need big wheels. A full rigged Tsunami is not going to be as fast as a 23.3 Formula hull. I owned one and am very familiar with the differences between the two. With the same power and props the Formula was 4-5 knots faster, mostly due to weight.

What hole are you in?? Can you post a pic??

Moose thank you for the input. I have read up on your Posts in regards to the 300 and the Powertech Prop. The zuke wheel just sucks performance wise, probably being the reason you went with the LFS Powertech. Mainly was trying to alleviate a bunch of testing with a slug of props.

Figured i could Probably run a 21p Rev 4 and then have Rich Work his magic on it to make it hit the Rev Limit. Right now i have on the 16 x 18.5 honestly just not impressed with it. Even at my elevation about 3500 feet i am usually 300 RPM slower here than sea level its pulling 5900 RPM and the Hole shot was sluggish at best.

Thank You for the Input... I am going to look into the LFS and perhaps Demo a Rev 4. Totally agree about the Gear Ratio being so much different.



I have 3 Holes i can move it up. About 2.5 Inches. Right now with 30" of setback its just about 4 Inches above the Keel... I think i am just going to Jack it to the Top and See what happens. If its Close... Then i can start messing with some props.

As always i much appreciate the Input from everyone.

One of the problems with Suzuki (Solas) props is the listed pitch. Come to find out the average pitch across the blade is 1-2 inches more making your 18.5 more like a 20-20.5. There is reason the slip ratio is so low on the Suzuki props.... the pitch is false and renders a false low slip ratio.

Moose is your zuke 300 at 100 hours yet? Trying to find some solid final numbers. The slip ratio was sick thats probably why its so low due to the not accurate pitch size.

I am thinking at this point to try the LFS and the Rev 4. The only reason i am stuck on the Rev 4, i have had such awesome results through the years. But that zuke gear ratio might really kill it.

Did u see much difference between the hole shot of the LFS and the Zuke Prop? I am guess the performance is not much difference other than at cruise. Can u shed any light? Thanks Again in advance Appreciate it.

Robert

The 18 Powertech has turned out to be a little under propped at load and my slip numbers are 10+. I'm going to wait until I get my Hermco bracket bolted on before I get back into propping. So far the 18.5 Zuke prop is as close to good as I have had.