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Posts: 477
Location: Iowa | I finally got out today to try the Enertia 22pitch I borrowed, the vent holes were plugged solid. Seemed to get on plane quickly-better than I thought it would. I was loaded with my typical load, with full tank of gas and empty livewells.
RPM's MPH
3000 25 would hold plane here
3500 30.7
4000 36
4500 39.9
5000 45
5200 This is where it seemed to want to run. If I trimmed more it would blow out.
I did it get it to hold once and 48.4 mph. I did notice it did not take the corners as well as the HI 5 23 pitch that has been on the boat. But I could get more speed from the HI 5. Probably because it was hooking up better at more trim. I can almost trim all the way out with the HI 5, but just over half way with the Enertia.
I then filled both livewells with the following results.
RPM's MPH
3500 31.4
4000 37.3
4500 41
5000 47
Top speed with livewells full was 48.2 mph. Hole shot was real close to the same, and it seemed to hold just a little longer before blowing out while trimming.
Strange to me that my speeds picked up with more weight in the back. More bow lift? Holding the motor lower in water to get better bite? I can only raise motor 1 more hole. Maybe I need to drop it. They had a 21P Tempest I can borrow too, might try that one next weekend. Any other suggestions or experiences. I want to try a 23 tempest, but think it might be too much. This is my first experience playing around with props, so I am open to advice. |
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Posts: 477
Location: Iowa | Max rpm's for my motor is 5600 by the way. Running the HI 5 23P I could easily hit 6000 if I didn't pay attention, but the load was a little lighter also.
Decaf reports running a 23P Trophy Plus with 52 mph at 5500.
Edited by Lone Stone 7/1/2012 10:45 AM
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Posts: 477
Location: Iowa | I returned the Enertia today. Score, they had a 21 pitch Rev 4 in. I will test that one tomorrow. |
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Posts: 477
Location: Iowa | I'm getting more confused now. I tried the revolution 21 pitch today. Had the wife and kids with, but they add less weight than me. Everything else in boat was same as last weekend. Would hold plane at 26mph and 3000 rpm. 37Mph @ 4000 rpm. They got out while I did the last run. 51.1 Mph at 5200rpm. The prop would hold to full trim without blowing out, but 5200rpm was the most I could get out of it. Does the trophy turn easier?
Edited by Lone Stone 7/8/2012 1:06 PM
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Posts: 13688
Location: minocqua, wi. | i don't understand ... turning rpm's isn't the goal, if it is then put on a high-five and spin the motor. i'd rather have plane at 26mph and 51.1 cutting and moving water with the rev 4 at 5200.
when you cup and rake water you will lose rpm's, you may see an increase in rpm's on a 3 blade with some more speed, but you'll suffer that flat ride and launch you get from the rev-4
51.1 with a 150 and 26mph on plane with that boat is very, very good performance.
if you want more you will have to get a 175hp outboard or buy another boat with a 200-250hp motor. |
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Posts: 477
Location: Iowa | Thanks for the reply. I understand that those are good numbers for that combination. I've never had to experiment with props much before. I just feel that I should be able to hit my max rpm's when wide open and trimmed out. Maybe I am wrong?? I'm not that terribly worried about top end speed, just want the right combination. I don't intend to run wide open all the time (I'd have a fast boat if I had that kind of money). I've just always been told that your prop should allow you to run to your max rpm's so you get the most out of your engine in all ranges. I loved the way this prop made it jump out of the hole and handled good except in the tightest turns, where they all blow out anyway. Maybe this is as close as I will get. I don't like the HI-5 because I have to watch it too closely to make sure I'm not going to over rev when I do open it up. If this as close as it gets, I'm fine with that, but I want to make sure everything is right before I start dropping $ on props.
Edited by Lone Stone 7/8/2012 2:51 PM
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Posts: 13688
Location: minocqua, wi. | maybe Steve from Hastings will chime in ... i'm curious now too, but i always figured the grabbing more water with the rev4 would cost rpm's, but then using the rpm's would also compromise low-end performance so the application of the prop within the range of torque the motor produces drives the selection? ...
i wonder if there is a curve by prop by general hp output that could show you where you are on the performance curve???
i agree on the high-5 ... mine sucked the life out of the motor and i never knew how bad it was until changing it out for another one. |
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Posts: 13688
Location: minocqua, wi. | also ... nelson worked with john down at that prop custom shop in burlington, wi. to optimize his prop and he might be able to help you to see what kind of improvement off of stock you might be able to achieve.
i think the cost is like 5-600 bucks to take what you have and optimize ... key would be to determine what the value of that would be. i'm struggling with paying that kind of money to improve what is already pretty darn good.
he'll probably chime in and share some numbers.
we're doing some testing this week with the rev4 and tempest 3-blade and we'll come back and share what our results were too. |
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Posts: 477
Location: Iowa | Maybe I overthink things. I thought about the repower, but with what I get from the 150, it's just not worth it to me at this point. The outboard on it now, has very little use, so I might as well run it a few years. I'm going to continue to try a couple more props if I can get my hands on them, but right now, it is the Rev 4 21p that gets my vote if the rpms are really not a big deal. |
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Posts: 3514
Location: Elk River, Minnesota | Hiya,
Sounds like that rev 4 is a good prop for your boat!!
Couple of thoughts here:
First, with many props, if you cannot get it to a higher rpm, it will not trim well without letting go. I have that happen with my current prop (OMC raker) where if I am not at a high enough rpm level, the the prop will not hold and it definitely lets go in a corner. At full rpm, it will stay hooked up and with just a little trim down for cornering, it will hold there as well.
On the day you had your wife and child with, the more weight in the rear actually helps the motor out for trimming the bow. The extra weight in the rear moves the whole center of gravity of the boat toward the motor. Thus, the bow acts as if it is lighter.
On the enertia, what was your normal load?
Now...on to the rev 4:
First and foremost, it sounds like it is hooked up quite well. But...depending on where the motor is mounted, you might be able to gain another 200 rpms or so.
In most cases, motors are mounted in the second hole up off the transom, which is a good placement for aluminum props and overall handling and speed. Most people don't do anything more with their boats after they have it and think that is how it should perform. In your case, you are playing with things and have found a prop that is doing well.
If memory serves me, that particular boat is fairly heavy and the gas tank is toward the front. If my memory is on, that explains why so many people went to a HI 5 with them, as the high 5 allows for excellent handling and lift overall, but it does sacrifice speed as it is not optimized for that purpose.
Here is what I would be considering: If your motor is in the lowest mounting position or one up, try raising the motor to the highest hole. If the motor is all the way flat on the transom and you go to the top, you might see a gain of upwards of 300 rpms. That would get you to 5400 - 5500, and if you have been running in these hot temps the midwest is having, you might see even more when things cool down. The high temp and humidity rob the motor of HP.
Steve |
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Posts: 477
Location: Iowa | Wow, lots of good info there. THANKS! The load both times was my normal load for musky fishing, which is heavier than when I fish other species. Tank full (40 gallons under the front deck). I did have the wife and kids get out for the final run of the rev 4 so it would be the same as the week before. I can go up 1 more hole with my motor, then it will be all the way up, will that be a problem? Both test drives were in the morning before it got too hot, but humidity was still there, although today was very nice out there. In your opinion would it worth trying the Tempest? I don't really want to lose any hadling though. Also, what are your thoughts on the Tropy Plus. Does it spin easier? I think it is a lighter weight prop, but again, I am not sure. Thanks again Steve. Very much appreciated. I think I will start looking for a good price on the Rev 4. |
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Location: Contrarian Island | 51mph with a full tank and 2 people w a 150 on a 690 I'd say you aren't going to get much better than that! keep it!
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Posts: 477
Location: Iowa | It was just me in the fastest runs. That thing really holds onto the water though. |
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Posts: 5874
| Maybe try a 19 Rev 4? That would bring the RPM's up a couple hundred. The Rev 4 is a bigger wheel than the Tempest, so it should be harder to turn. You might see some higher RPM's.I know some guys that liked the Tempest Plus on their 690's.
When we set my boats up, we ran a light load to get the rpm's at max. Then tested at full load to make sure it was within the tolerance. I ran a 21 Rev 4 on my 1890 Tuffy with a Merc 200, and my RPM's were about 5300 full load.
Edited by Shep 7/9/2012 8:10 AM
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| The Rev 4 is really good on the 690/2's. I have a 21P on my 692 with a 175.
You might try a 19P, you will gain RPM but your speed will stay the same. May be able to improve holeshot and lower onplane speed to 20-22. |
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Location: Contrarian Island | i have a custom 4 blade solas on my 690...i really like the way the 4 blade bites...great holeshot, mid range and scoots along at 50+ w 2 guys, and 1/2 to 3/4 tank....overall i think you'll like the 4 blade |
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Posts: 440
| If 5200 is in the recomended operating range at WOT then you are set. Two things that kill motors, lugging them down and turning too many rpms. Lugging them down is just as bad per the guys at Hydro-Tech. Go up a hole and see what happens. Maybe get a jackplate and start the mess all over. Our boat is about 100-200 rpms lower right now than in the spring, something to think about.
Edited by ChadG 7/9/2012 10:37 AM
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Posts: 13688
Location: minocqua, wi. | i've never run a 3-blade, but will tonight. i'll be surprised if i ever go away from the bite of the 4-blade. having your ass out of the water while turning and running a bit slower is so nice! i'll give the top-end for the ease of just driving on top of the water at a broader range.
brad ... any thoughts on the difference between the solas and the rev-4?? |
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Location: Contrarian Island | i think they are comparable...stock props are just that...stock and will be good for a wide range of boats/motors/applications...if you want the best performance from any prop that will take customization from a place like DAH...the blades on my 4 blade solas are sharpened to just about a filet knife sharp...talk about biting the water... |
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Posts: 238
Location: Rhinelander | I am running a 23p Trophy and it sucks on my 690 with a 175 efi. No hole shot and believe it or not haven't cranked her all the way up....haven't been on a big enough lake to stretch her out. Don't know wot rpm's or top end speed.
Holding back on going custom because of a 175 proxs hopefully this spring.
What do you guys think for now.....21p or 23p rev with the 175 efi? |
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Posts: 13688
Location: minocqua, wi. | there's a guy coming up to test my 23 on his later today ... give me a shout sometime and you can try my 23 and see what you think. we'll be on lake minocqua around 5pm. i think if you're up in the area stop out. we're meeting at rollies later this afternoon. |
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Posts: 238
Location: Rhinelander | Crap....should have looked you up before. In the valley now and shooting for Thursday night back home.
Will wiggle some free time to take a run in your rig and/or try your prop.
Please let me know how things turn out with the props. |
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Posts: 726
Location: Eau Claire, WI | I'm running a 21P Tempest Plus on my 692 w/ a 150 Opti. 45 is about the best I can do +/- 1 mph. About 5200 rpms based on my in dash tach.
I would love to get a few more mph's out of this set up. I'd say you are doing good and thanks for asking the question.
I'm not sure if I should put on a new prop or move the motor up one hole first. There is room to move the motor up one notch.
I wouldn't want a Hi 5 though. the boat I have experience with has a hard time backing up with that prop. A 4 blade might do the trick though.
Jono
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Posts: 5874
| I got a 23 Rev 4 brand new that came on my Tuffy 1890 200 Merc. But I don't think you'll turn it. That's a big prop. I was getting only 4800-4900 lightly loaded.
Edited by Shep 7/9/2012 3:35 PM
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Posts: 477
Location: Iowa | Thanks for all the reports! |
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Posts: 176
Location: Tomahawk, WI | Tonight Sled and i are going to try each others props. Mine is a 690 with 175 Opti, i currently am running a 21p Tempest Plus. Sleds is a 690 with a 175 Proxs currently running a 23p Rev4. I will write down the numbers of both these props and list them on Wednesday. I doubt i will be able to turn a 23 Rev. 4 to optimum 5750rpm's with my motor, but at least i will get the feel of it and if i like it i can get a 21p or 19p.
Mike |
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Posts: 238
Location: Rhinelander | I have a 21P rev-4 on order to try out Wed or Thur. Will report what I find.
My boat is with me in the valley having the buff/polish/clear work this week. |
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Posts: 176
Location: Tomahawk, WI | Hodag, i think that prop will work for you or me, Sled is probably pushing 25 more hp than us thus the 23p. I believe for every pitch you drop, you gain 200 rpms or something like that. |
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Posts: 238
Location: Rhinelander | I'm hoping you're right.
Whenever the boat detailing is complete I will hit the water and find out.....wed or thur.
Should work out to be an ok back up when/if (next spring) the proxs 175 is installed. I will have a custom prop built where BN suggested at that time.
175 proxs I thought was around 192 hp when dyno'd?
If the 21p works and I buy it I can let you try it out some time.
Edited by Hodag Hunter 7/10/2012 9:01 AM
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Posts: 13688
Location: minocqua, wi. | 175 proxs is a phriggin rocket ... |
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Posts: 238
Location: Rhinelander | jonnysled - 7/10/2012 8:59 AM
175 proxs is a phriggin rocket ...
when are you taking me fishing to try it out?  |
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Location: Contrarian Island | what are you seeing the way it's propped Sled? 51-52? i would think w the right prop that should be a 55+ rig w 2 guys alll day |
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Posts: 13688
Location: minocqua, wi. | i got 53.5 but believe there is 54 there all day long. the 53.5 was second time on the water. tonight i'll spin the 21p Tempest and see what's there, but i agree that it's a no-brainer to be 55+ ... i've been just enjoying the power and connectivity. |
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Posts: 5874
| These motors get better with some age on them. My Opti's always ran better/faster immediatly after break in, and then again after about 50 hours. |
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Posts: 176
Location: Tomahawk, WI | Ok, just tried Jons 23 Rev 4, all i can say is simply Amazing. Jon and i put in on Minocqua lake and i opened her up not thinking i could turn this prop with my 175 Opti, i was really surprised at the 4 sec. hole shot and the 57.6 gps top end with 5600-5700 rpms. The porposing is gone and i can hold plane speed at 28mph, cornering was fantastic. The boat really cruises nice at about 3800 rpms and 36-37 mph. Also i dropped Jon off at his buddys dock and took it out by myself, and i could not get it any faster, it seemed like it didnt make a difference with him in the boat or not. Just ordered the new prop from Rick at brainerd, should be here in 4-5 days....Yahooooo!!! any body want to buy a 21 pitch tempest plus or a 23 pitch older 4 blade trophy let me know.
Thanks again Jon. |
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| weight in the back actually helps mine too...so not surprising to me you couldn't get it going faster solo....when i have a buddy and he sits in the far back mine goes faster than me solo |
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Posts: 13688
Location: minocqua, wi. | that boat absolutely flew!!
flat performance was fantastic ...
i need to get out and really stretch the legs on my boat, i became convinced that my c hull and the vs hulls are totally differently both in how they push and plane but also in weight. after yesterday considering sitting in the chair of a vs with a pro-xs that has even more hp than the opti makes you wonder how truly fast that hull could travel! |
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Posts: 176
Location: Tomahawk, WI | Jon, like i said yesterday, with a pro xs it may even hit 60, Hint Hint Brad. |
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Posts: 238
Location: Rhinelander | Wow, sounds like the 23p rev4 works great on your rig. Wonder how the 21p will now preform on my 175efi? Will find out soon.
How much fuel in your front tank? livewells full? Fishing gear loaded in boat also during test runs? |
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Posts: 176
Location: Tomahawk, WI | Half tank or better for fuel, no fishing gear in the boat. |
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Posts: 332
Location: Neenah, WI | Try a Laser II 21 pitch That is what I run on my 690
SAINT |
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Posts: 13688
Location: minocqua, wi. | these motors can max. rpm's on 23's so no reason to pitch down or even consider a 3-blade for that matter unless there is a power-band you would want to hit.
i can see using a 21 for a 150 or at altitude, but i wouldn't even consider a 21 based on what we just showed on the opti |
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| Pantlegger, im interested in your 21tempest plus. Call or text 810 three hundred four 1 four 8 thanks. Brad |
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Posts: 5874
| Wow, that's good news. Maybe it's the lower gearing in the 175's vs the 200 Optis. Plus the 690's are lighter than 1890 Tuffy.
Best thing about the Rev 4's is they not only have a good bow lift, but it also lifts the transom too. Less boat in the water equals more speed. That boat get a little wiggly in the back at WOT?
Too bad you ordered a new prop. I have a 23P Rev 4 like new that I ran for about a week. I'd let it go for $300 if anyone is interested.
Edited by Shep 7/11/2012 5:58 PM
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Posts: 477
Location: Iowa | Wow! Now I want to repower. I didn't expect that, but not out of range for what I see with my 150. Good deal. |
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Posts: 1901
Location: MN | Been following this thread loosely. Not disappointed in the hole shot or speed on my 690 vs at all (52 on the gps) with a Merc 150 XRI efi, but that 23p Rev4 sounds intriguing. Would I see as much benefit on my rig with only a 150? |
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Posts: 477
Location: Iowa | Propster - 7/11/2012 8:42 PM
Been following this thread loosely. Not disappointed in the hole shot or speed on my 690 vs at all (52 on the gps) with a Merc 150 XRI efi, but that 23p Rev4 sounds intriguing. Would I see as much benefit on my rig with only a 150?
I don't think our 150's will spin that prop enough. I tried the 21 pitch and was a little low on rpm's. What prop are you running right now, and which hole is you motor mounted on? |
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Posts: 1901
Location: MN | I'm not well versed enough yet to know it off hand, but I think it's a Trophy or Hi 5 (not sure if they are one and the same) 5 blade, not sure of pitch. Boat is up north so can't check. It had a 21p 3 blade before and hole shot sucked. I got the 5 blade from a buddy pretty cheap and it was a world of difference. You are running a 150 also? What are you narrowing your choice down to? |
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Posts: 176
Location: Tomahawk, WI | Dang-it, Heck of a deal from Shep.....i just paid 575 for mine. I cant give you the exact Rpm i was running at WOT, my tach needle was kinda bobbing around the 5500 and 6000. And yes shep at WOT the boat was squirrly.
Edited by PANTLEGGER 7/12/2012 8:03 AM
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Posts: 5874
| Maybe drop the Motor down one and see if that settles her in the back. Lots of transom lift from the REV 4's. |
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Posts: 13688
Location: minocqua, wi. | PANTLEGGER - 7/12/2012 8:02 AM
And yes shep at WOT the boat was squirrly.
indeed |
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Posts: 477
Location: Iowa | Propster - 7/12/2012 12:08 AM
I'm not well versed enough yet to know it off hand, but I think it's a Trophy or Hi 5 (not sure if they are one and the same) 5 blade, not sure of pitch. Boat is up north so can't check. It had a 21p 3 blade before and hole shot sucked. I got the 5 blade from a buddy pretty cheap and it was a world of difference. You are running a 150 also? What are you narrowing your choice down to?
I have a High Five 23 pitch on right now. The trophy props are 4 blade. Right now I like the rev. I would like to try a 23 trophy, and a tempest yet just see the differences. Also am going to wait for a 19 pitch rev to come in so I can try it too. I'm not in a huge hurry to switch yet, so I figure I have all summer to figure out which one I am going to get. Might try the 25 pitch high five also. |
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Posts: 183
| If you like the Rev 4 you should check out this prop http://www.mercuryracing.com/propellers/bravoixs.php I put one on my 1890 Tuffy with 200 Opti and the results where awesome, I gained almost 2mph, better holeshot and some rpms. You have to step up a pitch due to the prop design. They have a blog page that Scott Riechow their prop guru will answer questions http://www.mercuryracing.com/blog/walleye-prop/ |
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Posts: 477
Location: Iowa | Just got back from the Chip. This was the first time I had the boat out for different conditions. Still had the 5 blade on. 2 guys and gear, it would still blow out all the time. Top speed just over 48. Here is the strange part.....yesterday it hooked up. I figured it must be that the gas tank was down to about 1/2, but it all of a sudden grabbed and never let go again. So I opened it up to see what would happen. Wide open throttle and full trim, handled great, never lost any water pressure, and was moving at 51.3 mph. 2 different gps units showed same speed. Did this happen because the weight of the fuel was no longer pushing the bow down as much, therefore letting the engine settle in and lift the bow better? It really surprised me when it happened. It acted like the rev 4. Any other ideas why it just took off, other than the balance?
Edited by Lone Stone 7/22/2012 12:03 AM
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Location: Contrarian Island | a few thoughts...
2nd guy placement: was the 2nd person in the boat in the same spot / chair they always sit in ? I have found if the guy in my boat is sitting in the far back vs. say sitting on the front deck extension i get more speed trimmed up.
Gas tank: yes, I think mine definitely runs faster between 1/3 and 2/3rds full...over 2/3rds it is just too much weight... under 1/3 I don't get the "bite" I need....we have 42 gallon tanks i think so you are talking about 250 lbs of weight when full...that's one big dude sitting up on the bow!
Altitude: maybe google altitude of both places you run/ran the boat...if there is for example a 1000 ft difference that can greatly impact HP and performance....
sounds like you should run it at half a tank and leave that prop on tho!
Edited by BNelson 7/24/2012 8:18 AM
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| Come on, no g-log and the fastest 690 known to man? |
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Location: Contrarian Island | how fast does it go???? i only get 51-52.... ; )
Edited by BNelson 7/24/2012 4:48 PM
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Posts: 238
Location: Rhinelander | Update....
Never took it out of the box or tried the 21p Rev 4. After hitting a larger lake to really stretch the motor out was hitting 5800-5900 rpm's with the current Trophy 23p. My bud owns a boat dealership and just brought it back and said I need a Rev 4 23p as the others here recommend. (5800-5900 was by myself, around 5200-5400 with the whole clan in)
The trophy 23p sucks out of the hole and top speeds with full tank of fuel, myself, wife and (2) kids was 49 something. (gps) Livewells were half full too.
This motor was definitely rebuilt at some time, that I knew, along with a new lower unit. The lower unit is some kind of racing deal with exhaust out of the water when fully trimmed and raised on the jack plate. She sounds a ton faster then it is really going. Loud is an understatement.
Edited by Hodag Hunter 7/24/2012 5:50 PM
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Posts: 477
Location: Iowa | I was thinking the same thing about running half full, but better make sure the gauge works better than it does now. Passenger is always in seat. As for the guy that don't log in........I could care less, this thread is about finding the best all around prop for my boat. If you have nothing to contribute, just go stick your head in the mud at the bottom a lake. If I was wanting to be the fastest I would not have the 150 on it yet. Just writing what is happening with mine so maybe someone else can use the info in the future. Come down and jump in with me or shut up.
Edited by Lone Stone 7/24/2012 7:23 PM
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Posts: 477
Location: Iowa | Hodag, let us know how it goes, please. |
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Posts: 238
Location: Rhinelander | Lone Star.....sure will.
But there is a chance the gearing was/is changed in the lower unit with the racing type lower unit on the boat. My results may or may not help anyone but will post what we find. |
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Posts: 477
Location: Iowa | Understand that. Will be interesting to see. |
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Posts: 176
Location: Tomahawk, WI | I think there is a mistake, i just installed my new Rev 4 23 pitch, i could barely get out of the hole, motor wanted to quit, too much prop to turn, only could get 4800-5000 rpm's wot. When i tested Sleds prop i failed to look at the stampings on the prop, i now believe he has a 21 pitch. Sled is going to physically check his for me this afternoon. Sorry for any misinformation, when i get this figured out i will let you guys know. |
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Location: Contrarian Island | you believed something Sled said? don't you know he's full of bs!! jk Sledster
tho ? i'm surprised it didn't turn it actually...a buddy has a 4 blade 25 pitch Solas...(i physically saw it stamped 25) on a 150 suzi on a 692..he turns it just fine...pushes his 48 on avg..
23 pitch 4 blade shouldn't be all that bad for your rig...? you have a 175 opti right? hmmmm the plot thickens! I'll be testing a custom tempest 23 pitch on mine this weekend..be interesting to see if / how the 175 suzi turns it....
Edited by BNelson 7/27/2012 11:05 AM
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Posts: 176
Location: Tomahawk, WI | Ya, not Sleds fault...HAhahah. I should have checked the stampings myself before i purchased. I could actually turn it, but i had to work the throttle, when up on plane it went like a raped ape but i could only get about 5000 rpm's out of her. It was hot and muggy last night so that has a little to do with it also. |
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Posts: 238
Location: Rhinelander | My gears must be changed in my 175efi.
I can spin a 23p Trophy up to 5900 but hole shot still sucks.
Did anyone ever try a 23p trophy and what rpm's are they hitting?
Edited by Hodag Hunter 7/27/2012 11:07 AM
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Posts: 238
Location: Rhinelander | My Rev 23p isn't in yet..... picking up the 21p again to try tomorrow.
Talking with my bud (owns a big boat dealership) said if my gears were changed the prop shaft would probably be larger. (he never saw my boat)
I will have both hub kits with me this weekend. Pantlegger if you want to try the 21p sat or sun get a hold of me. We can meet somewhere maybe sled has time too.
My weekend is filling fast with fishing appointments, bear baiting and projects from the wife. |
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Location: Contrarian Island | different motor/gearing I know but I ran a 23 pitch customized Tempest Plus on my 175 suzi and it overrevved at top end..great holeshot/mid range but not enough prop....beeper warning came on and it shut the motor down...I think a 25 p tempest plus would be about right and probably be the next one to play with if anyone has one they aren't using lemme kno!
Edited by BNelson 7/27/2012 11:08 AM
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Posts: 238
Location: Rhinelander | your suzi four stroke I thought would have lower gears...... |
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Location: Contrarian Island | we can spin 16" diameter props on our suzis... this tempest was a 14...so it makes sense....will try a 25P tempest plus sometime as it might be a great top end prop. |
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Posts: 176
Location: Tomahawk, WI | Hodag, i dont need to try any other prop, just waiting for sled to let me know if his is a 21 pitch for sure, thanks anyway. I have a 23 pitch Trophy small hub with a large hub aluminum ring and open exhaust ports that actually works pretty good on mine, you are welcome to try it if you want.
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Posts: 238
Location: Rhinelander | How is the 23p trophy out of the hole? What is the wot and max rpms you can get with that prop?
Edited by Hodag Hunter 7/27/2012 11:30 AM
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Posts: 176
Location: Tomahawk, WI | It was good until i installed the large bore ring, now the boat noses up like a bass boat than at the optimum rpm's it slams down to the water and than hold on, great mid range. i can turn that prop to 5900 rpm's also. Without the bore ring, if i remember, the hole shot was great. I believe with the bore ring i wasnt getting enough exhaust over the prop to get more rpm's to shoot me out of the hole. Maybe with your gearing the bore ring may help you. Did the trophy you tried have a large hub? or is it a small hub? |
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Posts: 5874
| PANTLEGGER - 7/27/2012 9:35 AM
I think there is a mistake, i just installed my new Rev 4 23 pitch, i could barely get out of the hole, motor wanted to quit, too much prop to turn, only could get 4800-5000 rpm's wot. When i tested Sleds prop i failed to look at the stampings on the prop, i now believe he has a 21 pitch. Sled is going to physically check his for me this afternoon. Sorry for any misinformation, when i get this figured out i will let you guys know.
What vent plugs do you have in?
I don't see a 6-700 RPM difference from a 23 to a 21? Although you do lose a lot of HP in the real hot and muggy air. Could explain a couple hundred. Als |
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Posts: 176
Location: Tomahawk, WI | Shep, vent holes are plugged solid, i know i could get a better hole shot with them out, but the prop i borrowed from Sled also had solid vent plugs in. |
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Posts: 110
Location: NEW LENOX IL | BNelson - 7/27/2012 11:07 AM
different motor/gearing I know but I ran a 23 pitch customized Tempest Plus on my 175 suzi and it overrevved at top end..great holeshot/mid range but not enough prop....beeper warning came on and it shut the motor down...I think a 25 p tempest plus would be about right and probably be the next one to play with if anyone has one they aren't using lemme kno!
The problem was due to your visor catching too much wind ,therefore changing the angle of attack of the hull causing the prop to ventilate . :0)
That's too bad Brad , I was hoping you would see at least 55 .One of my buddies has a 25"fury but not sure how long I can get it for if at all . |
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Posts: 5874
| PANTLEGGER - 7/27/2012 1:02 PM
Shep, vent holes are plugged solid, i know i could get a better hole shot with them out, but the prop i borrowed from Sled also had solid vent plugs in.
Those vent pluggs need to be opened up. Either medium or large. That's a big prop to start turning. I'm pretty sure I had medium plugs on my 200 Opti.
Try taking two out opposite from each other. That should allow the prop to cavitate enough to get the power band up on the hole shot. |
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Posts: 238
Location: Rhinelander | I tried the 21p Rev 4....shame on me for fishing such "small lakes" but haven't had time to take it to a large lake to really stretch her out with out running out of lake water.
This is what I know so far, the hole shot is better than the 23p trophy and mid range is neck snapping on the 21p. That alone has convinced me to keep it.
What is the WOT and rpms? don't know yet. The last few lakes I was on only give me about 400-500 yards before I need to power down. I can hit upper 40 mph's but need to slow down because of boat traffic and neck down areas. Screwing around with the hyd jack plate is lengthing the test time also.....still searching for the best hole shot height and adjustment at speed.
Darn bear baiting and great fishing on a few of these smaller lakes is not giving me enough daylight to "waste" time testing a prop. |
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Posts: 42
| my 98 690vs with a 175hp mercury efi has a 4 blade 23p custom prop from dah, think it is a trophy will pull 58 to 64mph gps at 5600max rpm pending on temp outside with two guys, gear and 1/2 tank to 3/4 tank of gas works the best, also have a 9.9 four stroke kicker on back. If props are even a question I would call dah props, they are the best I have found.
Edited by glog 8/7/2012 5:59 PM
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Posts: 238
Location: Rhinelander | Glog, I see a re-power in the near future and at that time I do plan on going with a custom prop with dah. Not fond of the chance of shelling out big bucks for a prop that may not be compatable with the new motor.
Until then I will probably stick with the rev-4 21p on my Merc 175 efi.
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| you can buy my 175 suzuki so i can get a 175 pro xs! ; ) |
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Posts: 110
Location: NEW LENOX IL | glog - 8/7/2012 3:51 PM
my 98 690vs with a 175hp mercury efi has a 4 blade 23p custom prop from dah, think it is a mercury trophy will pull 58 to 64mph gps at 5600max rpm pending on temp outside with two guys, gear and 1/2 tank to 3/4 tank of gas works the best, also have a 9.9 four stroke kicker on back. If props are even a question I would call dah props, they are the best I have found.
That's flyin ... Wow |
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Posts: 42
| why do you see a re-power soon, is your compression going bad? These 175 merc efi's from the research I have done are suppose to be one of the best motors merc has made, back in the day! |
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Posts: 42
| Took reef hawg out when I first bought it and he coudnt believe it either, said it halls the mail! You would think that with that much speed that hole shot would suck but it doesnt. This is why I recommend dah props.
Edited by glog 8/7/2012 5:00 PM
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Posts: 477
Location: Iowa | Anyone have more updates this year? I am having trouble finding different props to test yet, so am going to find a Rev 4 and just go with it, unless some of you have changed props with better results Thanks guys. |
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Posts: 477
Location: Iowa | Ordered a 20 pitch rev 4. Filled up the tank and tested it tonight. Jumps out much better than the High 5, no slipping because of the full tank of fuel up front. The High 5 had a tendency to blow out with full fuel, just not enough to hold the front up right, unless it was about half empty. Full trim tonight had me about 5450rpms and hit 51mph once. Otherwise it was just under 51 most of the time. Very nice ride and bite. A 19 pitch would probably be ok yet, but I'm very happy with this one. |
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Posts: 1901
Location: MN | I'll have to try that prop. Pretty happy with the hole shot and top end with the hi 5 on ours, but would love to eliminate the porpoise when the tank is over half full. What did that prop cost?
Edited by Propster 8/1/2013 9:43 PM
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Posts: 477
Location: Iowa | Boat was solid at all speeds and trims, no porpoising any more. PropGods.com. in Florida had it drop shipped from Mercury for me out of Wisconsin. $515 to my door and it was here in 2 days. EBay was $535 and up. Local dealer was going cut me a deal and let me have one for $650! Ken at propgods is great to deal with and knows his stuff. If you talk to him, tell him you heard about him on here. Maybe he will put an ad here too. My high 5 is now for sale. I have no reason to keep it around now.
Edited by Lone Stone 8/1/2013 9:13 PM
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Posts: 379
Location: Thief River Falls MN | I run a 20 p Rev 4 on a 620 with a a 250 Verado Pro Four and cannot break this prop loose. Great all around performance. Not apples to apples comparison, but the Rev 4 is a great pop when mounted high on a heavy boat.
Edited by toddb 8/3/2013 10:45 AM
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690vs/150 merc prop help