Just wondering if there were any opinions on whether there's a prop out there that people find works better than the OEM aluminum prop the Yamaha comes with? My initial thought is that with only 25HP, a propeller may make some difference, but it wouldn't be as much as a propeller change on a 200HP or above. I could be wrong.
Propping any motor can make or break performance. I plan to buy the new F25 in the next 6 months and no doubt gonna go thru a few props to find the best performing one. I recommend Solas props
That seems like it would make sense. I think I need to review some hydro dynamics information. I'd be replacing the standard aluminum propeller on a 2017 Yamaha F25 that's mounted on a flat bottom boat. No tunnel. No portion of the hull is shaped as a V hull. I wouldn't want to go to the trouble of buying a new propeller just to find that it doesn't make much difference given my set up.
That's a good point. Hadn't thought about that. I saw a 4 bladed stainless steel prop from Protech that I thought looked good. I like the fact that it was supposed to provide more lift to the stern as well as an improved whole shot. However, that could just be sales hype. Unfortunately, I have flex in my transom. I can see where the transom is bending back slightly where the engine is mounted. Before a jack plate, and certainly before a new prop is installed, I need to take the boat to a friend's shop, have him remove the outboard, and hold on to it until I can strengthen the transom. Right now, it's just half inch marine grade plywood, and starboard, along with metal support brackets. The bending is occurring in two places just beyond the starboard. Once the transom is ship shape, I'll proceed with the remainder of the repairs and address the tach issue.
Yeah I agree fix transom first. But in regards to the prop I think with the 4 blade you may gain a little better hole shot but will lose some top end. Usually guys with tunnels are running 4blade which will allow them to raise the motor up more without the prop slipping. Also you might want to make sure your 25hp will have the needed torque to properly spin a stainless prop. I personally don't like stainless due to the fact if I hit something props cost less than prop shafts.
I feel 100% exactly the same way about stainless propellers and have always opted for aluminum for the exact reason you mentioned. If there's a risk of me losing any top end speed, forget it.
I guess I just assume everyone wants the absolute best prop for their hull/motor combination and that usually means having either a shelf prop tweaked or a custom prop made. I'm just weird like that but I also ask people that fish with me to limit gear and food/drinks to cut down on weight.
You right! Everyone probably does want the best prop and they come on here to find info on how to get the best prop. That is where the clarification on your first post comes in. I wasn't trying to be an rude. I knew where you were going with your statement I just wanted you to provide the needed info. Thanks again.
I have the new 2017 Yamaha F25 on a 1448 Alweld. I am not completely through the break in period, but at WOT I’m turning 5800rpm and going 27-28mph (GPS). I put a hi-jacker jack plate with 6” of setback. I have the cavitation plate 0.5" above the bottom of the boat. I currently have issues with blowout/cavitation when turning the motor hard at WOT and occasionally at takeoff. The boat has trim tabs. I am currently running the stock 9&7/8 x 11&1/4” F series aluminum prop. 5000-6000rpm is the operating range for this motor. After talking with PowerTech, I went with the SRA3 in the 10x10p. I hope to gain a little more top end performance with the new SST prop. I really wanted to go with the 11 pitch but they said it would likely drop my RPMs too much. I will report back after I test it.
So i tested the SRA3 10p prop on my motor and it performed very well. I know my boat isn't a microskiff, but it did offer great results with the aluminum hull. By dropping one pitch switching to SST, I stayed the same rpm. Holeshot was better, with less ventilation. I was also able to raise the motor another inch on the jackplate. I am now +2" from the bottom of the hull. I really like the performance of the SRA3 prop on the new F25 Yamaha. Now time to catch some fish!
Ok so now I'm thinking of reproping my 2017 f25. I have it on a Skimmer Skiff 14.5. Right now I'm hitting 29/30 mph at WOT 6100 rpms with the AVP running just skimming the surface right before it starts to blow out. Hole shot is decent.I am running the stock prop with 11 1/4 pitch. Just wondering if I should mess with it or go with a 11 pitch aluminum prop with more cupping? Oh also I am running an Atlas micro jacker with no power T&T. I am not really interested in Stainless. I am looking for thoughts and opinions. I would like a little better hole shot but its not anything thats really bad. Just want to get the most out of my set up.
If not interested in going with SS, I would say save your money because I do not know of any aluminum prop that will out perform the stock yamaha prop. SS is where all the performance is.
I have three different SS Props and the Power Tec is the superior one with performance and duration. Four years I have been using and only had to rehub to stay in service. Top speed is still within 1 mph original usage from new.
I have three different SS Props and the Power Tec is the superior one with performance and duration. Three years I have been using and only had to rehub to stay in service. Top speed is still within 1 mph original usage from new.
I run so shallow I'm reluctant to use stainless. Getting in and out from where I keep my boat at low tide is a matter of running until you run out of water. Lol! However, your advice is still invaluable. I work with Live to Fish, a fishing tackle, gear, and marine electronics company. However, you probably have to be an authorized dealer to get a deal on their props.
Yeah i heard the older ipb version had a hook in the bow but I think that is one of the things Bobby improved with the hull. I usually run around 20mph in a good chop.
The stock prop is working great on my Skimmer 14, I am hitting 29/30 at around 6100 rpms at WOT fully loaded with another person. I would however like to try a prop with a little more cupping to try and get my motor up a little higher while running before blowout. But the stock prop is legit!
I just put a PT SRA3 9P on a new Yamaha F25 on a glades skiff. 25 to 28 mph depending on load, getting about 5800 rpm WOT. Aluminum 11 1/4" pitch was getting similar RPM and speed.
I'm sorry to ask but you sure it's a 9 pitch? I ran the stock prop got 23 25 mph 5300 5500, with 9 pitch sra powertech hit rev. Limiter 6100 rpm 20 mph
Sounds right. Don't see how you could get much more out of the motor. How are you getting those numbers? And what rpm range are you running? I know when I first got here boat I was using my phone GPS and was running 30/31 mph but on my raymsrine GPS it was showing 29/30 mph not a big difference.
OK Finally broke down and ordered a Stainless prop for the Skimmer Skiff.
I ordered the powertech SRA3 in 10pitch from Nettle props out of Austin Texas. I called and talked to the owner JT and he was extremely helpful and his prices are really good. I will update on the performance of the prop and also the a review of the company once i actually recieve it. Im pretty stoked!
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