1995 Talari 190 4.3 with 1.84 ratio 205HP

[Rkeesling]

Currently we own a 1995 Talari 190 4.3 with 1.84 ratio. We purchased this a couple years ago and it had a beat up 14.25 x 21 pitch alum prop. I put a new 14.25 x 19 Solas aluminum on it and at Wot I hit 4800 trimmed up which is correct wot rpm as its 4400-4800. I do have nauticals smart tabs installed gps verified 41 mph with 3/4 tank of gas, three adults, two batteries etc. boat dry weight is 2450. I borrowed a 13 7/8 x 19 SS prop which was a little small in diameter and came to find out it was for an outboard. The prop allowed some exhaust pass over the prop blades and wot it hit 5000-5100 rpm with the same load and 43 mph. My question is I am going to purchase a 3 blade SS prop and wanting to know if I go with a 14 1/4 x 19 or up in diameter to a 14 1/2, 3/4 or even a 15 x 19 SS. I know a lot of this depends on which manufacture of prop I go with, rake, cupping etc will play a big part as well. Only water sports might be the grandkids on a tube. Any input will be appreciated. Thanks

 

[Texasmark]

What's your RPM with the borrowed prop at 41? Is the borrowed prop "ported"......holes under the leading edges of the blades? How's the hole shot with that prop? Its interesting that you are getting more speed and RPMs simultaneously which is hard to understand especially when you said exhaust gasses were passing over the blades (what ports do for you at slow speeds and how did you determine that) which would contribute to increased prop slip, added to less pitch which should drop your speed even though your RPMs are higher.

You have a data point with "change" to which you are aware. If you are getting a good hole shot with that prop it looks to me like you have dialed in your answer....buy that make, model, and pitch. Only way to know for sure what will work is to run it when considering what might work. I think your suggestions on what to buy are too much pitch when considering water sports with that rig and load.

 

[Scott Danforth]

overall diameter of the prop has very little effect.

a 15x19 requires the flat annode on an Alpha 1 gen 2

 

[Faztbullet]

Before you buy a prop , check your trim limit as they are set on the conservative side. Next time out trim as usual and then tap the trailer button. If you pick up rpm/speed without prop blow out, note the position on trim gauge and then adjust limit to that setting. Our dealership was a Checkmate dealer years ago and I tested/adjusted each one sold for max performance. Had several reps from other states ask me at shows why our boats was faster than theirs.

 

[Rkeesling]

What's your RPM with the borrowed prop at 41? Is the borrowed prop "ported"......holes under the leading edges of the blades? How's the hole shot with that prop? Its interesting that you are getting more speed and RPMs simultaneously which is hard to understand especially when you said exhaust gasses were passing over the blades (what ports do for you at slow speeds and how did you determine that) which would contribute to increased prop slip, added to less pitch which should drop your speed even though your RPMs are higher.

You have a data point with "change" to which you are aware. If you are getting a good hole shot with that prop it looks to me like you have dialed in your answer....buy that make, model, and pitch. Only way to know for sure what will work is to run it when considering what might work. I think your suggestions on what to buy are too much pitch when considering water sports with that rig and load.

Hello Texasmark, appreciate the reply.

With the borrowed 13.78x19 SS prop (5000-5100 rpm with the same load and 43 mph) when I installed the borrowed prop the outside diameter of the hub was small even though it installed, the inside diameter of the alpha was larger. This allowed some of the exhaust to not go thru the center diameter of the prop. The SS was not ported. After checking with a local boat shop they told me that SS prop is for an outboard motor as the diameter was smaller and would not capture all the exhaust thru the center? If this is the case then it wasn't a fair comparison between my Solas Alum and the SS prop. You're thinking the 19 pitch is too much? Possibly I should drop to a 17 three blade?

 

[Rkeesling]

overall diameter of the prop has very little effect.

a 15x19 requires the flat annode on an Alpha 1 gen 2

Thanks Scott, so 14 -14.5 diameter should not effect it as much as the pitch. Oem it came with 14.25x21 and I went with a 14.25 x 19 alum which does alright. Does smaller diameter than a 15 need the annonde?

 

[Rkeesling]

Before you buy a prop , check your trim limit as they are set on the conservative side. Next time out trim as usual and then tap the trailer button. If you pick up rpm/speed without prop blow out, note the position on trim gauge and then adjust limit to that setting. Our dealership was a Checkmate dealer years ago and I tested/adjusted each one sold for max performance. Had several reps from other states ask me at shows why our boats was faster than theirs.

Fazbullet, appreciate that info - if the weather holds out this weekend the boat will be out for some testing. Will definitely double check the trim limit. Thanks!

 

[Scott Danforth]

Thanks Scott, so 14 -14.5 diameter should not effect it as much as the pitch. Oem it came with 14.25x21 and I went with a 14.25 x 19 alum which does alright. Does smaller diameter than a 15 need the annonde?

there are 3 or 4 different anodes for the A1G2. I know running a 15x19 Solas prop, I needed the flat anode.

 

[Rkeesling]

there are 3 or 4 different anodes for the A1G2. I know running a 15x19 Solas prop, I needed the flat anode.

Scott,
I believe mine has the flat anode on it - attached is a picture. I'm assuming it's to allow clearance for the prop blade?

 

[Scott Danforth]

Scott,
I believe mine has the flat anode on it - attached is a picture. I'm assuming it's to allow clearance for the prop blade?

yes, so you can run a 15x19 if you want

 

[jimmbo]

The smaller hub diameter is allowing a lot of Ventilation to occur, especially upon initial Acceleration, which can be a good or bad thing depending on your boating needs. Props of normal hub for your drive may or may not come with Vent Holes in the Hub for a more controlled venting. Mercury offers a System where you can change the size of the Vents on their SS props.
You might want to consider an Enertia from Mercury. Not a cheap Prop, but almost everyone that has used one, raves about it. It will lift and hold the entire boat out of the water, and has a very tenacious grip on the water

 

[Rkeesling]

The smaller hub diameter is allowing a lot of Ventilation to occur, especially upon initial Acceleration, which can be a good or bad thing depending on your boating needs. Props of normal hub for your drive may or may not come with Vent Holes in the Hub for a more controlled venting. Mercury offers a System where you can change the size of the Vents on their SS props.
You might want to consider an Enertia from Mercury. Not a cheap Prop, but almost everyone that has used one, raves about it. It will lift and hold the entire boat out of the water, and has a very tenacious grip on the water

Appreciate the info jimmbo, I've heard a lot of great things about the Enertia - I'll do some runs this weekend and see what the boat and my needs are. I know I need a prop with stern lift and not a lot of bow lift if that's possible. Thanks again.

 

[jimmbo]

Enertia can lift the bow very high too. I was on a 20 ft Lund, where the Enteria caused it to Porpoise way too much, even trimmed in. There are Props that are Stern Lifters, they are usually Cleaver type Props. In 1986 I rode in a Flip of a 19 ft Baja, it was equipped with a Stern Lifter and it was difficult to keep the bow from Plowing

 

[Texasmark]

I recently bought the Solace 4 blade that I mentioned. In the verbiage furnished by Solace they spoke of bow and stern lifting types of props. Their 3 blade, other parameters identical is in the bow lifting arena like would be used on a bass boat and their 4 blade is made for water toys and cruising just above planing speeds to lift the stern. As I stated, in the OB arena but statistically, having removed the Laser II which is a badass bass boat (pad hull) prop made to get the bow up and get the boat on the pad, and replacing with the 4 blade because I wanted to maximize the cruising arena, the difference is obvious.

If you get a ported prop, like the Mercury Laser II with round ports, you get the same effect as you are currently getting in the hole shot and as jimmbo mentioned, Mercury has plugs whereby you can reduce the amount of bypass to complete shut off with the solid plugs. I stick with my pitch mentioned earlier, based on your inputs.

 

[QBhoy]

Always a tough one this. At the moment. Your numbers from both props are suggesting the mid teens for prop slip. Not to great perhaps. Often it can be the case that stainless props of the same pitch can equal or even exceed an ally of that pitch. Just because they can lift the hull more and gain rpms and speed. Always great to be able to try a few props out if you can. Personally I’d stick to a Mercury prop. Their quality control over the end product is far better than the likes of solas perhaps. That said. I happen to know that two apparently identical laser 2 props of the same pitch, have shown different results on one of my boats. So weird eh.
For your case, I’m almost certain that you can see significant damage improvements, if you get a good quality prop. I might also say that I don’t think your engine may allow you to see a genuine 5100 rpm perhaps. Some later 4.3 carbs had a limiter I’m sure. Around 5000 or a little less. Not sure. Perhaps you don’t.

 

[Rkeesling]

Always a tough one this. At the moment. Your numbers from both props are suggesting the mid teens for prop slip. Not to great perhaps. Often it can be the case that stainless props of the same pitch can equal or even exceed an ally of that pitch. Just because they can lift the hull more and gain rpms and speed. Always great to be able to try a few props out if you can. Personally I’d stick to a Mercury prop. Their quality control over the end product is far better than the likes of solas perhaps. That said. I happen to know that two apparently identical laser 2 props of the same pitch, have shown different results on one of my boats. So weird eh.
For your case, I’m almost certain that you can see significant damage improvements, if you get a good quality prop. I might also say that I don’t think your engine may allow you to see a genuine 5100 rpm perhaps. Some later 4.3 carbs had a limiter I’m sure. Around 5000 or a little less. Not sure. Perhaps you don’t.

Thanks QBhoy,

prop slip on the alum was 13-14% and about the same with the undersized diameter SS. While not the best numbers I've read where some had higher numbers and others had a lot lower slippage. I agree there are a lot better props out there than the Solas which I'll use as a backup once I get a decent prop that suits all my needs. I only have my on board tach which may be off as I would think the limiter would kick in over 5000-5100 but I'm not certain what it's set at or is it even works. If I can find one I may connect one this weekend and compare the factory one to another one I connect to. Thanks again.

 

[QBhoy]

Thanks QBhoy,

prop slip on the alum was 13-14% and about the same with the undersized diameter SS. While not the best numbers I've read where some had higher numbers and others had a lot lower slippage. I agree there are a lot better props out there than the Solas which I'll use as a backup once I get a decent prop that suits all my needs. I only have my on board tach which may be off as I would think the limiter would kick in over 5000-5100 but I'm not certain what it's set at or is it even works. If I can find one I may connect one this weekend and compare the factory one to another one I connect to. Thanks again.

No problem. If it helps you any…and obviously different boats like some props and not others…but generally, I can tell you that my choice of props for a boat like that, would be something like a laser 2, tempest plus or if you find one cheap enough…there isn’t much to beat an enertia. Laser is old school, but a trusty, predictable and safe bet to usually be consistent. Tempest is what has replaced it these days. Very good for acceleration, cruising efficiency and top end…but can act like a prop of an inch more for rpms usually. The enertia is not as efficient as the tempest for slow planing cruising (not that you’d notice, unless it was compared straight afterwards), but generally you won’t find a quicker off the shelf prop, like for like, for top end. And very good at anything upward of slow planing too. Will allow so much trim and still stay hooked up well.

 

[Texasmark]

Always a tough one this. At the moment. Your numbers from both props are suggesting the mid teens for prop slip. Not to great perhaps. Often it can be the case that stainless props of the same pitch can equal or even exceed an ally of that pitch. Just because they can lift the hull more and gain rpms and speed. Always great to be able to try a few props out if you can. Personally I’d stick to a Mercury prop. Their quality control over the end product is far better than the likes of solas perhaps. That said. I happen to know that two apparently identical laser 2 props of the same pitch, have shown different results on one of my boats. So weird eh.
For your case, I’m almost certain that you can see significant damage improvements, if you get a good quality prop. I might also say that I don’t think your engine may allow you to see a genuine 5100 rpm perhaps. Some later 4.3 carbs had a limiter I’m sure. Around 5000 or a little less. Not sure. Perhaps you don’t.

Put a Solas in your hands and then put it on your boat, then downgrade them!

 

[QBhoy]

Put a Solas in your hands and then put it on your boat, then downgrade them!

I’ve no doubt they are probably good value for money, to be fair. But any I’ve had my hands on previously, have been pretty nasty for finish and for me…not came close to anything I had from merc at the time to compare it with. Would have been a laser 2 I’d have compared it too, I’d say. Can’t remember. Only tried a couple of them and on only the one boat with a 90hp merc. Still have the solas in the garage. Definitely lighter in weight though

 

[Scott Danforth]

for what its worth, I absolutely loved my Solas 15x19 on my 19' SeaRay with the 220hp 5.0