99baja

I have a 99 29 outlaw with twin 7.4 mpi's not mags the boat came with 25 mirage+'s but will only turn 4150 rpm turning props out and 4300 turning props in, it is also very easy to blow the props out when getting on plane. I am thinking of trying a set of 23 mirage+'s ( the correct rpm range is 4300-4600 at wot). If anyone has had this problem let me know what you have found or anyone with advice .

GETTINBYE

99baja,

I agree that your RPM is to low. The 23 Mirage + should be just about right. Maybe a 22 - 24 Bravo 1. That will help the blow out comming on plane. I am presently using Mirage +'s and can fry them comming onto plane if not careful.

You listed your RPM difference turning in VS turning out but did not list recorded speeds each way. I am interested in those numbers if you will provide them. Also what other performance / handeling differences did in VS out make.

Thanks,
Mark

NASDBOY

I have the exact same set-up as you. I had a set of 24 labbed mirage +'s and was only getting 4200 rpm. I now have a set of labbed 22's and run 4600 rpm and about 64 on GPS(SUCKS) I would say that a good labbed set of 23's would be perfect.

29 OUTLAW

I blow out with 25 - 3 blades but have learned to handle it. Tried 27 - 3 blades, still blew out but less. Tried 26 - 4 blades, still blew out but very little. Only problem was they were slightly worse than even the 25's at top speed. Should be getting my labbed 27's back soon. I will deal with the blow out in exchange for top speed. I don't think the blow out is hard to deal with. I just run the throttles up to 3200rpm, sit back, and let it come up on plane.

Advantage

I am running labbed 25 Mirage Plus in my 29 Outlaw with 454 Mags. I'm turning 5050-5100 rpm's all day long. I agree with 29 Outlaw, I would not run 4-blade Bravo's unless you don't care about top-end performance. This hull likes the 3-blades.

Advantage

29 Outlaw,

When you were prop testing, what sort of rpm's and speeds were you spinning with the 25 - 3 blades versus the 26 - 4 blades? Thanks in advance for the information.

29 OUTLAW

Advantage - go over the the Baja forum and look back a couple of days for a thread called "new props". My saga is explained there.

Advantage

29 Outlaw, I saw the thread and read the contents. It still did not say how many rpm's you were spinning with the 25 - 3 blades. Can you quickly give me the rpm and speeds for the 25 - 3 blades versus the labbed 26 - 4 blades? I'm doing some prop testing myself. Thanks again.

29 OUTLAW

I don't have a breakdown of the 25's thru the entire range, but top end has always been 5200rpm @ 78mph speedo.

Advantage

Thanks for the information. What were you running for rpm's and speed with the 4 - blade labbed Bravo's? Thanks.