Prop Help for 1999 29 Baja Outlaw...
 

Hello All...First post on here but searched around really couldn't find anything in particular to my boat but here it is....

I have a 1999 Baja 29 Outlaw with Twin 385HP 454's....
I have Merc Bravo 1 24P 4 blade props on it now...Dont know if my speedo is correct or not.. (just hooked up an external hookup one...since the factory one took a crap) and today out at the lake fully trimmed out at 5k on each engine speedo was only reading out 65mph....doesn't make sense..the guy I bought the boat from said it ran around 73-75ish...same props...Is it just that the speedo could be off since its not the stock one?

Mainly what I'm trying to figure out is...If I step up to the next prop..do I get a 25P 3 blade or 4? or which pitch is going to get me going about 75?

Thanks

The very first thing you do is NOTHING ...
until you've been able to confirm your 5000rpm speed on a handheld GPS.

If you're spinning stock 24p Bravo/1s @ 5000rpm, there's no point in labbing.
Labbed 25p Mirage/PLUS props might add a fewe more MPHs,
but you'll loose much of the grip and efficiency you're used to.

Keep in mind, water conditions also have a major impact on top speed!

Which gps would be best to use to determine my engine rpm?

also would moving up to a 26P be better?

Most any handheld GPS will provide fairly accurate speed parameters.
However, a GPS will not provide any RPM data.

If you spin 24p at 5000rpm, a 26p may not provide any more speed.
I'd suggest you get some good data before you do anything else :signs069:

I believe that your motors need to run at 5000 RPM at WOT if they are Mags. SO your there with the 24P props. So if you want to step up to 26P then you will need to lab the 26P props to maintain the 5000 RPM.

Julie

whats a set of labbed 26P 4blade props gonna run me?

I did a slip test online, I have 14% slip on my bravo 1 24P prop...and thats pushing me at 65-66mph on my baja speedo...what prop will put me in the 70's??

Remember when you calculate your slip on Bravo I props you have to reduce one inch of pitch from the stamped pitch.

The cost for labbing is $450.00 for a 4B propeller.

Julie

I'm looking to buy a set of props for it this week...just wondering on what Is going to get me into the 70's I see alot of the 29 outlaws on here with my same engine package doing around 75 with their props....seen a few guys runnin around 75 with a 26P 4 blade Bravo 1 and also a guy on ebay says he's runnin about 74 on his with a labbed 25P 3 blade....


I'm just confused of which one to get...i like my 4 blade...so is that the one I Should get? Or will the 3 blade help me get the topend i want?

thanks!

Throttle-Up can help you...talk to Julie or Matt, they helped me. They even re-worked the props the next season after labbing them; no-charge. They are very knowledgable and have worked on everything. Since your boat is relatively small for twin big blocks I would try Hydromtive 4 blade 26"p. If they seem good but your only turning 4600-4700 rpm's, then lab them & you should get close to 5000. Hydromotives seem to give stern lift when turned outward especially.
BTW, 3-blades are more efficient=slightly more top end, but you lose more hole-shot & usually mid-range too; it's probably not worth it. Plus, the newer 4,5, & 6 blade props have gotten so "good" they usually work better on todays performance hulls. Labbing adds about 200rpm's; give or take. Just my 2.

ibzmotofmx; don't believe everything you hear about speeds on the water; most people are "stretching it", or their speedos are inaccurate. A Baja 29' w/ 660-700hp turning 24"p 4blade Bravo 1's @ 5000rpm's is right @ 67-68 with a moderate slip of 15%.

sounds good i'll have to ask them...oh yeah btw its the 454 mags..385HP each (770HP combined)

Right, I just noticed that after I posted....I had one in a Dozi 22 ZX, it was fast. Isn't that 385 @ the crank, 350hp @ the Prop? Either way, what year boat? Weight? I guess 75 sounds reasonable if everything is "in synch"...Good Luck!

I would try a set of 25" Mirages,your x dimension on that boat is most likely a little low,the 3 blade runs better in this application,trust me I just went through this on my 33' Outlaw.

I would envision that 3B props will be faster than 4B when comparing a lab to a lab. Baja is pretty conservative with the drive heigth. I would expect the 3B props to be 1-2 MPH great on top.

Julie

If you like the 4 blades, I'd Lab 26's to configure to your hull. You will maintain the attitude and drivability and pick up top speed.

3bl props will always be the fastest on you're hull if set up right. Finding 10mph may be pretty tough.

We need to raise our prices! We charge $320 to Lab Bravo 1 propellers, and we have been doing it since 1994, the day they were invented.

I think i'm going to go with a set of 26P Labbed Hydromotives 4blade...give that a try..