29 outlaw props

gslinger · 07-16-2003, 08:47 PM

Has anyone ran a 29 outlaw w/6.2's with labbed props? If so what size prop and what gains were seen? My brother has a 29 with 6.2's and is thinking about labbing his props. He was curious what gains he could expect.

Need-the-Speed · 07-17-2003, 01:04 AM

The question is what pitch does he have now? What is his rev limiter set at? Would he jeoperdize control for top end (four blade vs. 3 blade)? Tabs? I had a 29 with 7.4 mpi's. I believe that the h.p is similiar (310/320). I went to a 25 Mirage plus from a 23 mirage plus. Mercury racing trimmed the diameter a bit. I think roughly 1/2 inch. This set-up got me about 2-3 mph. Occasionally I had to drop the tab's because I would have a little "blow-out" when getting on it from a stand still. Mid range performance was good. I believe that the red line was about 4800. The set-up cost about $1500.00. If you do anything call Mercury Racing. Ask for Dennis Cavinaugh. HE IS THE MAN.

dstroyed · 07-17-2003, 09:16 PM

I have 2002 29 with 6.2 running 21 pitch 3 blades. Stock I would see 64.5 on gps @ 4950 maybe 5000 with 70 air in Jan. Fully loaded and 100 deg. in summer I would see 62 gps @ 4800- 4850

I had them balanced and thinned a little ( not much kid swims to much) and trimmed about 1/4 inch. Test day I hit 66.5 gps@ 5250 with 80 temps. I have not gps since. I hit the mark and am happy, I had to break 65.

No blow out. I think the boat actually plans faster because the props spool up faster now.

I do notice that the weight in the boat now makes a bigger inpact on speed than before labbing. Before labbing it really did not matter how much weight. I would only get 62 mph in the summer.

Before the lab job on 4th of July 2002 at LOTO I had full fuel cell and 7 people in the boat and it planned without tabs with no problems and still hit 62 on gps. Who would have thought?

HOUSTONPROP · 07-18-2003, 02:47 AM

will be glad to answer any questions you have ,Give us a call or e-mail us at HoustonPROPELLER@AOL.COM/Darin

CigDaze · 07-18-2003, 08:01 AM

6.2's should be running 4800-5200 rpms WOT, limiter at 5250.

Sounds like dstroyed has the set-up solidly nailed down. Good info.