Re: Choosing a prop
You might try reading this for a better understanding of changing props for better performance, and for the major differences between aluminum props and stainless steel.
http://forums.iboats.com/showthread.php?t=369057
If you would prefer to not go to this much trouble there are many other people who will come along and gladly help you.
Fish, welcome to the forum, I will try to help you as much as I can but without more information no one can help you, and I will tell you I need more information than anyone else. But if you would like my help fill this form out the best you can and I will help you as much as humanly possible. My expectations are that you are willing to expend as much time and energy as I will to find a better prop for your boat.
Just copy this form to your computer and paste it into a word processing program and fill it out, then paste it into your post or just use the numbers for reference in your reply and type in your information.
Iboats Boat and Motor Info
1. Year, make and model of boat
2. Length and base weight of boat and maximum recommended HP for your boat, look for boat decal on boat
3. Number of people and gallons of gas normally on boat and what do you use the boat for
4. Year, manufacturer and model of motor and manufacturer?s recommended Wide Open Throttle (WOT) range
HP and gear ratio of outdrive IMPORTANT
5. Anti-ventilation Plate height above the bottom of the transom of boat if it is an outboard in inches, use a straight edge or a board under the keel and sticking out to the anti ventilation plate for a reference, and take about 4 pictures for us to see.
6. Does it have a hydrafoil, dolefin, whale tail or trim tabs
7. . Manufacturer, model, diameter, pitch, number of blades and whether SS or aluminum props.
IMPORTANT
1.
2.
8. WOT RPM and speed from your current prop and how much gas and how many people were in the boat for the test data and is the speed by GPS. Make sure you trim the prop up until it starts ventilating and then just trim in until it quits ventilating. If you do not have a tach you can buy a Tiny Tach for less than $ 50
RPM ___________ Speed (GPS)___________ No. of people ____________ Gal. Gas ________
9. Has your motor been tuned up lately and have you checked that the carburetor butterfly is opening all the way
by only using the control on the console, checked compression, looked at the plugs and checked spark, is the bottom of the boat clean and barnacle free, and have you checked the Tachometer against a mechanics tach, all of the foregoing could be the reason your prop is not attaining full RPM, or too many RPM.
10. How long has this prop been on the boat and why, at this time, do you think it is the wrong prop. What problems are you trying to cure or what are you looking for the boat to do that it is not doing the way you think it should or to your expectations and Does the prop show any damage that you can see or feel
REMEMBER, The prop I recommend will be NO better than the information you give me.
The only thing I ask of you is to come back and give me a report of WOT RPM and speed for my database.
H
