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      Members Only Fluid Forum View   08/08/2017

      Fluid forum view allows members only to get right to the meat of this community; the topics. You can toggle between your preferred forum view just below to the left on the main forum entrance. You will see three icons. Try them out and see what you prefer.   Fluid view allows you, if you are a signed up member, to see the newest topic posts in either all forums (select none or all) or in just your favorite forums (select the ones you want to see when you come to Fishing Minnesota). It keeps and in real time with respect to Topic posts and lets YOU SELECT YOUR FAVORITE FORUMS. It can make things fun and easy. This is especially true for less experienced visitors raised on social media. If you, as a members want more specific topics, you can even select a single forum to view. Let us take a look at fluid view in action. We will then break it down and explain how it works in more detail.   The video shows the topic list and the forum filter box. As you can see, it is easy to change the topic list by changing the selected forums. This view replaces the traditional list of categories and forums.   Of course, members only can change the view to better suit your way of browsing.   You will notice a “grid” option. We have moved the grid forum theme setting into the main forum settings. This makes it an option for members only to choose. This screenshot also shows the removal of the forum breadcrumb in fluid view mode. Fluid view remembers your last forum selection so you don’t lose your place when you go back to the listing. The benefit of this feature is easy to see. It removes a potential barrier of entry for members only. It puts the spotlight on topics themselves, and not the hierarchical forum structure. You as a member will enjoy viewing many forums at once and switching between them without leaving the page. We hope that fluid view, the new functionality is an asset that you enjoy .
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Starman

Another Prop Question

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I have read the earlier post about changing the pitch on a prop to increase top speed. As many, I want to buy a second prop, and use it for the top speed prop. I am running a new Yamaha 115hp Four Stroke on an 18 foot boat. The current prop is an 13.25" with a 17" pitch. I know that increasing the pitch to much can be bad by dropping rpms to low at full throttle. My question is, can a person reduce the size of the prop say like from 13.25" to 13" and not have to increase the pitch as much? Or can you mess with the diameter of the prop at all?

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On older motors, or motors with a heavy work loads, they do not recommend getting to far astray with the pitch either up the scale, or down.

It will add increased stress to the motor and possibly reduce its life or increase it's probable maintenance costs.

You may be able to achieve better results with a "Jack Pate" or fine tunning your trim with less stress to the motor?


~Determining RPM's~

Now, determine your wide open throttle (WOT) RPM

For safety and efficient performance, it is critical that your engine operates within the RPM range recommended by the manufacturer. Matching the right prop for the load is the most significant factor of RPM adjustment.

Effect of Prop Pitch on RPM
A pitch change can increase or decrease the RPM's and bring RPM's into the recommended range. A 2" increase in pitch (for example, from 21" to 23") typically results in a decrease of approximately 300-400 RPM.
wot1.gif

First, Determine Manufacturer's

Recommended RPM
Find the manufacturer's recommended RPM range in the owner's manual or ask your dealer.
wot2.gif

Test for Maximum RPM
Using the existing propeller or a new propeller, make test runs to determine the maximum RPM and boat speed. Vary the trim angle for optimum performance.
wot3.gif

RPM Higher Than Recommended.
If the actual WOT RPM's are above the recommended RPM range, install the next larger pitch propeller to decrease your WOT RPM. Re-test the WOT RPM.
wot4.gif

RPM Lower Than Recommended.
If the actual WOT RPM range is below the recommended range, install the next smaller pitch propeller to increase your WOT RPM. Re-test the WOT RPM.

When you combine all these factors, you have the information you need to select the correct propeller for maximum performance, safety, and fuel efficiency.
wot5.gif

~Usefull info links.~

www.rbbi.com

www.theoutboardwizard.bizhosting.com/

www.solasuk.com/Selection_of_x.html

www.caterpillar.com/services/shared/marine/pleasure_craft/product_support/docs /PMYART.DOC

www.google.com/search?num=100&hl=en&lr=&ie=UTF-8&oe=UTF-8&newwind ow=1&safe=off&q=Propeller+pitch+chart

www.boat-props.com/match/match_omc_props.html

Ed "Backwater Eddy" Carlson

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Backwater Guiding "ED on the RED"

[This message has been edited by Backwater Eddy (edited 05-11-2003).]

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