• RECEIVE THE GIFTS MEMBERS SHARE WITH YOU HERE...THEN...CREATE SOMETHING TO ENCHANT OTHERS THAT YOU WANT TO SHARE

    You know what we all love...

    When you enchant people, you fill them with delight and yourself in return. Have Fun!!!

Sign in to follow this  
chillincarp870

Pitch on props?????

Recommended Posts

Pitch is somewhat like putting different sized tires on a car. Too big and the motor can't turn the rear wheels. Too small and you'll over rev the engine but not go very fast.

Imagine putting monster truck tires on a Geo Metro. It has a small engine and won't be able to get those big tires moving real well and the engine will bog down. Now put training wheels on that Metro and you'll spin them all the way down the street but when you get on the highway the motor will be rev'd way up and you can't go very fast because the engine is at the limiter.

There is a window where the right pitch works best with the boat style, weight, and engine. Most of the time it's preferable to select the pitch so that max engine RPM is near the top of the manufacturer's recommended limits.

Prop pitch is only part of the puzzle as you can get into multiple blades and different blade styles, but after you find the right pitch you then can play with the other variables if you want to really squeeze the last bit of performance out of your boat.

Share this post


Link to post
Share on other sites

is it really that big of a deal for a duck boat on what pitch to get? or would you go somewhere in the middle of the pitch available as i don't know the rpms of the motor

Share this post


Link to post
Share on other sites

On a duck boat with a small motor, just use the prop that came with the motor. Changing the pitch on the prop will not have any useable effect. If you are looking to improve your performance, you may want to investigate what is available in weed resistant propellor designs.

Share this post


Link to post
Share on other sites

If you are just looking for a general purpose prop, try to find a 3 blade aluminum, 10 X 11" or 12" pitch. I would not go any higher than that in pitch, and the diameter will be a standard for the gearcase on your motor. Look for a good deal and try not to spend too much. Soderblooms is probably a good bet for you.

Share this post


Link to post
Share on other sites

Do you have your old Prop?

If so, take a look at it - it should be stamped in the hub area on the outside - you're looking for a number with the letter "P" before it. As hydro said, it'll probably be a 11 or 12

If you don't have your old prop, or you can't find the pitch of it, I'd give Jay Soderbloom a call; he should be able to point you in the right direction.

marine_man

Share this post


Link to post
Share on other sites

Marine Man I was wondering if you would have any idea on proping a fish boat boat for more speed by knowing what the boat size and motor are. Or any other fmrs know about proping a fish boat. Its a 1994 Lund Angler Deluxe with a 1992 40hp johnson. Right know with me (230 lbs) and any passanger I can go about 23mph gps speed. Is that about right or is there more speed to be had. I dont have a tach so I guess I dont need my max rpms. I guess I am wondering more or less if that speed is what others with similar package are getting

--I will run out to shed and check my prop size and update

Share this post


Link to post
Share on other sites

That sounds pretty close to what I'd expect.. what is your holeshot like?

The prop size would help as well... or are you still out in the shed grin

marine_man

Share this post


Link to post
Share on other sites

Prop size is 12.5x13. boat has good holeshot and plains out fine

Share this post


Link to post
Share on other sites

I would say that's pretty close to the right prop.. you could maybe try a 15, but I'd want a tach to verify it before I changed.

marine_man

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  

  • Your Responses - Share & Have Fun :)

    • Among other wilds that have moved into our urban areas, we can now add loons.  There is a breeding pair on the lake formerly known as Calhoun, mostly staying on the west and northwest sides.  But there is also a bunch of yearlings fishing the east side, numbering maybe six or seven and so unafraid that they come right up to the 36th Street dock and try to steal suckers being used for musky bait.  Maybe the call of the wild is not really so alien to the South side of Minneapolis, but it looks like the loons have moved in and can be heard calling from time to time. 
    • Sounds like you guys gave her heck up there to find them. I'd be praying thanks, too if I got that one on! ☺️
    • Quick recap:   Weather was too darn “nice”!  Upper 80’s - 90’s; no wind to speak of; mostly sunny. Water temps were anywhere from 64 - 71 depending on location and day.   We looked the lake over from end to end, marking up our map and returning to some places where we saw fish either later the same day or a couple days later.  We could literally see the transition from spawn to post spawn happening during our stay.  Being new to both muskie fishing and that lake, we spent time in dead water as much as good water but feel like we got a pretty good handle on how to go about setting up a more efficient return visit.  It was a lot work and long hours but I’d go back this weekend if I could so I must’ve enjoyed it.   A few pics as hoped for:
    • big dave 2 and leech, darn good lookin meals!!!!  Dave have a good weekend!!!!
    • Ok Dave have a good weekend. Hope you get over the whole butt hurt Leech deal! Not sure where you got that I don't like folks smoking or grilling things?  I know I do enough. Have fun! 🙂  
    • Heavy rains across northwestern Wisconsin last weekend and early this week have flooded some roads and caused washouts on some highways, roads, state parks, forests and trails. According to the National Weather Service the area has received 7 to 12 inches of rain from Friday through Monday.Several park system property or portions of properties are closed due flooding. Amnicon Falls State Park, closed temporarily but has reopened, though some roads, trails and observation areas remain closed. Pattison State Park is open for camping only; all trails, observation areas, picnic and day-use areas are closed. There are washouts on the dam that forms Interfalls Lake and Highway 35 over the dam is closed. A campground and horse trail are closed at Governor Knowles State Forest and the day use areas along the river at Interstate Park are underwater.Water was roaring over Little Manitou Falls at Pattison State Park.Photo credit: Gervase ThompsonAll rivers in the region are running extremely high. The falls at both Amnicon and Pattison are roaring, but road closures mean observing the falls now is challenging. The Bois Brule and Flambeau rivers are high enough that some canoe launches and campsites are underwater. The water is making its way downstream and the Lower Wisconsin River is running very high with all sandbars submerged and canoeing and kayaking not recommended. The river is expected to crest Muscoda this weekend at 40,000 cubic feet per second. .
    • I'm still going to smoke this fatty while camping this weekend whether Leech likes it or not.....😋       See you fellers on Monday........
    • Rick didn't like all the "My Grills bigger and better then yours" posts!  😅
    • We switched to a new server. Had a glitch in our dB that lost a couple days of posts.
    • I ripped a hole in one of my favorite pairs of fishing shorts just need a decent sized patch to cover her up