prop size for dasa 950
- Thread starter spoto
- Start date
- Location
- Saskatoon,SK
2 inch setback, 12-17 for flatwater.
Philip Clemmons
Owner, P&P Performance
- Location
- Richmond, Va
11-117, 12-18..................depends on compression, igniton, and ex.
12-17 or 12-18 should work good with total loss. Maybe even try a 11-17 or 11-18 with stock electrics.
- Location
- Central FL
i'd go with the 11-18. you guys need to think outside the box on props...... you might find something fun out 
raytherace
Canadian Brapp Dealer
- Location
- St-Ray Beach, QC
did you try different prop ?
Im spinning a 14/19 with long tail cone and 85mm nozzle on 148 setback . With a little old Judge ported 8mm pv
Buckwild12
I'm moved by DASA power!
- Location
- Chester, Maryland
Not to thread jack, but I am running a 850pv ss Dasa and I think I'm in the same boat being over propped, I think it takes forever to spool up and hit the power band, I'm running an epic, with a b-pipe and a 144 setback mag with a 13/18. Any suggestions on you think this is what it is, or if there is room for improvement by a simple change? Don't get me wrong it's plenty strong of a motor, but it's not an arm ripper.
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Definitely try the 12/17 and have a short leash for trying the 11. I used a 13/18, but needed to bore my nozzle to 87 from 85 to get the most out of it. Stubby cone and bore your steering nozzle to 91. That low pitch prop will let those PV's pop and your engine will come alive. If you don't want to bore your nozzle get a 2mm spacer between the prop and stator.
Buckwild12
I'm moved by DASA power!
- Location
- Chester, Maryland
Nozzle is at 86 mm now, I think I'm going to go with, if not try both of the two you have suggested. I was thinking the same thing after reading a few other threads along with this one.
Lucaumpits
RIDE LIKE U'VE STOLE IT!!
- Location
- Orlando, FL
go to Harbor freight and get a drum sander. And put in a drill press and y ou can bore your own nozzle. Bore that sucker to 89 and steering to 93 and a smaller cone that should help a lot.
BTW 11/17 is the prop you need, but if you follow my instructions you probably can run a 12/18
BTW 11/17 is the prop you need, but if you follow my instructions you probably can run a 12/18
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Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
Contact your builder.
Philip Clemmons
Owner, P&P Performance
- Location
- Richmond, Va
There so much testing involved, and so many variables, its hard to pick an exact number. Keep in mind its not an ego contest......guys like to brag about how big of a prop they can pull, like its an indication of power or manhood. The prop that fits your combo best is the one to run.........dont worry about the numbers. In my opinion alot of guys are running more pitch than they need to get the best results. Anyone that has ever ridden one of my boats can tell you how well they work...........and they are usually shocked when I tell them the pump setup. Its all about the right combo of parts for your riding style. Riding style is usually left out, but plays a huge part in prop/nozzle selection.
All that being said, Dasa motors like smaller props in general based on the port timing and layout. The motor will rip once you get it right, and run as well as anything on the market. If you have a 950 with anything larger than a 12/18, you are likely a little steep, and giving up power. Flatwater setups need to be slightly lower than freeride, as you dont have as much wave to accelerate up.
My 946 8 mil ran a 12/18 with 85 nozzle, on PFP and MSD TL. It ripped! It also had an agressive flatwater tune. My 1100 10 Mil is on a much smaller (than most) prop as well, and is making sick power. Its less prop than another DASA 1000 with a B-pipe and enhancer, but the rider of the other ski said mine "makes too much power."
I cant stress the setup, (and weeks of testing that go with it,) enough!
All that being said, Dasa motors like smaller props in general based on the port timing and layout. The motor will rip once you get it right, and run as well as anything on the market. If you have a 950 with anything larger than a 12/18, you are likely a little steep, and giving up power. Flatwater setups need to be slightly lower than freeride, as you dont have as much wave to accelerate up.
My 946 8 mil ran a 12/18 with 85 nozzle, on PFP and MSD TL. It ripped! It also had an agressive flatwater tune. My 1100 10 Mil is on a much smaller (than most) prop as well, and is making sick power. Its less prop than another DASA 1000 with a B-pipe and enhancer, but the rider of the other ski said mine "makes too much power."
I cant stress the setup, (and weeks of testing that go with it,) enough!
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Buckwild12
I'm moved by DASA power!
- Location
- Chester, Maryland
I am smart enough to know there is no magic bullet, I do believe that Lucas may be right, I had great luck with my 11/17 hooker that I had in my stock pump on a little smaller of a motor. I think I will try that as a starting point. I also have sent a message to Impros, as impellers are their business, I bet they may be able to offer some advise. I have soo much $ wrapped up in my ski at this point, I may get both and try both.
X2 .... My findings are that cc's don't mean much . The prop that works best is the one that puts your motor on the pipe where you want it. All this is relative to pump size , nozzle dia .... on and on. I will say that riding / tuning styles have changed . Most flat water guys are not looking for an efficient prop . They are looking for a prop that is efficient in a very narrow area of the power curve. Free ride / surf guys generally want something all round . My 2 cents.
I think props are an area that ONLY you can decide on . Your builder can get you in the ball park but it takes a lot of fine tuning most of us don't take the time to do. Cruse around over on the hulk and see what those guys are doing. There is a lot of info on prop re pitching. I'ts made out to be a dark art , but I think with a little elbow grease it will pay dividends . My second 2 cents........ for a total of 4 cents .
Philip Clemmons
Owner, P&P Performance
- Location
- Richmond, Va
Let me know if I can help.................
Philip Clemmons
Owner, P&P Performance
- Location
- Richmond, Va
Agreed!
I repitch my own stuff, because normally you need some tweaking. Its tough for an out of the box prop to work perfect for your setup. Back to back testing on the same day really helps to clarify the best choice.
That's the point of the thread.... I realize pitch is entirely dependent on rider preference, I went thru 4 on my last set-up until I was happy... The 950 is on a friends boat... Isn't the lower the number the less aggressive? I know jack all about impellers... Title of the thread is for a Dasa 950 that's what I'm looking for