Just curious If anyone has some input on this. Need to prop a former F1 1991 26ft. Sutphen w/ 1.50 Bravo 1. Motor is 540 cid 550 hp. Boat weights 4500 pounds. I do beleive it has a 26 degree V. Peak rpm is 5000 to 5200. Probably would be a Bravo1 or Hydromotive 4 blade prop.

Marinetrans,

We just concluded a week of testing with the owners of Hydromotive. We tested many props including two of their newest offerings. The Quad IVX and the P5X. What we found was the stock Quad IVX ran as fast as a lab finished Bravo 1 and the stock P5X had the same top speed as a stock Bravo 1 but with much better acceleration.

If you are looking for a prop that has fantastic acceleration and plane-off the P5X is the ticket. If you are more concerned with top end speed the Quad IVX is the way to go.

If you have any more questions or would like more details of our testing feel free to call.

Matt
877 842 6855 toll free

Sutphen30,

The new Hydromotive X series props are of the Bow Lifting Design. The rake angle is similar to a Bravo I.

Matt

What type of boat ride do you like ? do like the feel of up and out of the water running on the prop ? or a more stable ride with good cruising speeds and accleration where TOP -END is not as imporant?

everyone has different desires of," THE FEEL OF THE BOAT"
The style of prop makes a big difference in this ?
more info on this would make a big difference in guiding you to the correct propeller.

I would like the boat to handle good mid to top end. Some good top end speed would be nice too.

Marinetrans,

We have done the prop work for most of the SVL and F1 boats in APBA and SBI. We have a great deal of experience and a proven record with F1 style boats. No matter what type of boating you do we can work with you to find a prop that will work for you.

We have the experience with the F1 style boats in the racing circuits which run in all types of water conditions.

If you have any questions don't hesitate to call, would love to work with you on your boat.

Matt
877 842 6855

Wouldn't The "X" dimension come into play? Whether the prop is running deep or not? His boat, being an older vintage (don't take that wrong, I own a 1989 boat), wouldn't there be a possibility that he has a low "X"? How do these newer style props work on low drive settings ie. 15.25" X dimension?
Thanks, Russ

I do believe it is 1 inch above the stock demension.

I am not sure what you mean by "stock dimension"?
You can use the "Cord Method". Measure from the keel to the bottom of the Transom Assembly, at the transom. Add 9.25 inches. That is your approximate X dimension.

RLW,

Drive height is a consideration when propping out a boat. Of course as the drive height is raised speed increases as does prop slip. But like everything else with a boat more is not always better. As the drive is raised higher bow lift is lost. There is an optimum drive height for every boat and prop. We also have to take into account what the owner's desires are regarding drive height.

When we work with SVL's and SV boats this is always a consideration. The very high drive heights is what makes the 6 blade prop perform well.

It is also important to consider dynamic drive height as well. This is especially true with cats as the stern of the boat is raised when running due to the hull design.

A good 4 blade prop is a great all-around prop for most boats that provides good handling, good plane-off, good acceleration, and good top end speed. Of course every boat is different as well as the owners needs and desires and that always has to be taken in account.

Matt