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Posts: 32935
Location: Rhinelander, Wisconsin | I don't think you have a 4 blade Tempest, that's a three blade prop. Trophy or Trophy Plus, or an old Off Shore, perhaps, we'll see when you get back. If so, you have a prop designed for flats and bass boats with high engine installations, which is not the case with a 690 series Fisherman.
I'd say Jim has too big a wheel, which VMS already identified. I ran a 21 on a 200 powering an 1890 and JUST was taching correctly but had porpoising issues and a bit of a left lean at low speed/hi torque. Switched it out for a Rev 4, and the boat is a totally different animal. |
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Posts: 32935
Location: Rhinelander, Wisconsin | 4 open holes? The engine is mounted five holes up? Measure your shaft length...do you have a 25" motor? Or is the VS on that boat that low?
A 23 Tempest Plus is way too much wheel for a 175. A 23 Tempest is designed for a 225 Pro XS or a 250 Pro XS in a walleye boat application. I'm surprised a 175 turns it at all. |
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Posts: 176
Location: Tomahawk, WI | I want, Iwant, Iwant, Iwant, A 60+ MPH 690......Too bad it comes at the cost of a new prop.
Glog, does your boat porpoise at 3500-4000 RPM with that prop? Or is this just a speed prop?
Steve, Tonight when i get home i will check which hole my motor is set at. The guy in Brainerd recommends the Rev 4 and he will ship for me test, what are you thinking 19 pitch? |
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Posts: 32935
Location: Rhinelander, Wisconsin | A 19 should be about right. |
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Posts: 42
| Jim,
Were are you located at? If you would like we could try the prop that I have to see if this fixes your problem? Mike this boat does not porpoise at that rpm and it is not a speed prop; if it was it would take a mile to get this tank onto plane. Like I stated before this is a custom make prop with special cupping of the blades. A 19pitch would work great for getting out of the hole but you are going to loose on top end. |
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Posts: 176
Location: Tomahawk, WI | My motor is mounted in the fourth hole from the top. Does that sound about right Steve? |
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Posts: 176
Location: Tomahawk, WI | Jim,
Looks like you and I are having the same problems, I got an idea, you should buy and test the Rev 4 19 and let me know the outcome. HAhahahahahah.
Sorry for kinda stealing this post.
Edited by PANTLEGGER 8/3/2011 9:02 AM
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Posts: 238
Location: Rhinelander | The below article from Popular Mechanics may or may not help.
Test boat was a Ranger 692VS with a Merc 175.
http://www.popularmechanics.com/outdoors/recreation/boating/1276976... |
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Posts: 21
Location: Wayzata, MN | Give Ricky at Brainerd Propeller a call. I stumbled across him on Walleye Central and I have to say he is a walking encyclopedia of Boat / Motor / Prop knowledge. All you have to tell him is which boat and motor you are running and he can tell you what prop you want.
I've got a Ranger 1860 with an F150 on the back. Like you, I was willing to trade some top end for a better hole shot - though I could hold plane at lower speeds. I ended up switching from the stock Yamaha 3 blade SS prop (21p) to a 4 blade 18p wheel. I gave up about 3 mph on the top end, but it just jumps out of the hole now. Also, it has REALLY improved rough water performance as well. MUCH more grip.
here's a link to his site:
http://brainerdprops.com/
He will also allow you to demo a couple of props to prove it to yourself as well (I was between an 18p and 19p - glad I got the 18).
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Location: Contrarian Island | when my 690 had a 175 EFI it would do 55 with 2 guys and normal load all day long...had it going 57.5 on gps w just me ...It had a 3 blade tempest on it... I believe 19 pitch.....thanks for the prop guy in Burlington...I might see if he can make one for my 175 Suzuki... |
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| Sorry for not getting back to anyone. I was at Airmarine in Chicago by Midway airport for 2 hours today discussing props. They are kind of the closet to me. Jerry says that my prop is not the proper prop for what I am asking my boat to do. It is a good prop for skinning guys, light gear and higher speed. He is highly recommending the REV4 in a 19 pitch. He sold one to somebody 2 weeks ago with a 692 and a 175 EFI and the boat owner reported back that the boat is a bullet out of the hole, planes out with 2 guys and gear at 24 mph and will stay on plane. Top speed at WOT was 51 mph on gps. I am going this saturday to do a trial run with the REV4 and 3 other props. He charges $25 to try props with a $200 deposit. I can live with those stats. I want to thank everybody for there help on this. I thought it was going to be an easy question. I, like alot of people, thought a prop was a prop. |
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Posts: 176
Location: Tomahawk, WI | Graet Jim, Let us know what you find out on Saturday. |
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| Due to working at last minute yesterday, I didnt get to try the REV 4 prop on my boat. BUT, I went out today after removing all 3 vent plugs to see what the boat would do and you cant believe the difference those plugs make. Got the boat on plane 10 times faster than before, porpoising was not as bad and I retained my top speed of 54. I then went back to the ramp and put the plugs back in and it was a dog out of the hole again. pulled plugs again and 10 times better hole shot. Now I have to decide if I want to try the REV4 and spend $600 bucks. |
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Posts: 42
| Save yourself the $600 and keep the plugs out. |
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Posts: 13688
Location: minocqua, wi. | My '94 690 has a 175merc xri mounted in the fourth hole down with a High-Five 547 C4
someone read my palm |
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Posts: 176
Location: Tomahawk, WI | I can run wide open all day without porposing also, Jim with gas prices where they are i would like to get on plane/pad without porposing at about 3500 to 4000 rpm's, i dont believe yours can do this, if so, call me wrong. I still believe and would love to try a Rev 4, if only i had the $. I have 2 pvs holes with plugs and 1 without a plug (21 pitch tempest plus), First i will try prop without any vents, than im going to try 3 new plugs with the small holes and drill them out if required to get to optimum performance. I will report back on my findings as soon as i can get the boat out, hopefully this weekend.
Sled, mine also is mounted in the fourth hole down. |
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Location: Contrarian Island | I called John today at the place GLog recommended...he sure talks your ear off but knows his stuff...I ordered a 4 plade Solas 23 pitch that he is going to customize beyond stock...probably get 3-5 more top end he thinks..we shall see....here in 2 weeks.... |
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Posts: 176
Location: Tomahawk, WI | Let us know how it works Brad. |
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| got the 4 blade custom solas and tested it....I hit 54.4 with me and my dog (80 lbs) and 1/2 tank of gas....with the stock suzuki 3 blade that same load I would avg about 51-52 ... I have a custom 3 blade tempest to try but need to get a part for the hub insert in order to test it.. the 4 blade pops the boat out of the hole a lot faster than the stock suzuki prop and pulls hard all the way up and hits just under 6100 rpms which is the suggested limit from suzuki
very happy w the prop overall...
John @ dah knows his props! |
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Posts: 176
Location: Tomahawk, WI | Thanks for the update |
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Location: Contrarian Island | the day i tested it was flat calm as well which isn't ideal for "lift"..would have hit 55+ i'm sure w a little chop |
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