Awash

Spent a long weekend at LOTO this last week and had time to collect some data on the props and boat.

Local prop shop fixed some pretty good dings and cups that were flattened from original owner, props are back to stock with just a satin finish.

2007 35 Outlaw Twin 496 HO's B1 4 blade 26P, X drives, 1.50 ratio

Water condition-light chop maybe 6"
Time 9:00 am Sunday on LOTO so not a huge amount of boat wake
Air temp 81 degree low humidity
Water temp 70+ degree
1/4 tank of fuel (185 gal. max) 2 passengers 500 lbs. and 40 ponds or so of cooler

Time to plane 7-8 seconds - 3 different runs
Trim Tabs all up, boat doesn't seem to need them to correct port/starboard list but only way to hold 30 MPH or slightly slower and plane is tabs all down (rarely in this condition)

3000 RPM 35 MPH Trim 1-2
3500 RPM 44 MPH same
4000 RPM 53 MPH same
4500 RPM 63 MPH Trim 2 +
4800 RPM 67 MPH Trim 4 This was WOT for a solid 90 seconds I could trim up a bit more and gain some RPM but no speed increase

I think this boat/engine combo from other write ups would do 72 or so. I'm pretty happy as it stand but 70 MPH and 5000 RPM would be nice if I didn't have to give up a lot of the bottom end. I have a bblades test form filled out but going to wait till winter to send them in any suggestion though on what someone else with same type of boat has used would be appreciated.

Keith Atlanta

I would assume more like 74 with your set up. (my boat did 72 with twin 496 HO's)

Why did you take the cup out? "Cup" is what carries the bow and gets the hull out of the water and gives you speed.

Awash

Prop shop "fixed some pretty good dings and cups that were flattened"..... I would never remove the cupping intentionally or have it removed. One blade I could see it was flattened it had the large nick the other very slight nicks but at least two blades had some cup missing.

Thanks for the info I appreciate that! Was yours in salt water or fresh?

Keith Atlanta

My boat was in Georgia 0n Lake Lanier for 2-3 years before I came down to salt water. It ran a very consistent 72 trimmed out and settled in.

I thought a 35 was more of a 74 MPH boat with HO's... could be wrong.

I assume they are 28 pitch? Either way, once you try Bravos with cup you'll notice that it carries the bow better and tracks better. Nice boat either way!

nailit

Do you have any #s before the prop work?? Your getting alot of slip!!
20% at 3500 and 16% at 4k..

I am getting 9.5 % at both rpms ranges and you should be there too.. with the higher x you have, you should be seeing more speed.. (used 25p in b blades slip calc as suggested by Brett about bravo props running small)

Try some other stock 26's or 25m+s! Or just send these to blades. Definitely should be cruising at 3500 closer to 50 in flat water.

Awash

Actually using Mercury's prop slip calculator its a bit worse than that but thanks NAILIT for the information that's what I was looking for other folks experience. With props before repair getting on plane was 3-4 seconds worse boat did not feel as stable and picked up a couple MPH in most RPM ranges.

I will run all these again but for sure I was not in flat water on LOTO will be back on chain of mud in Illinois this week and do the numbers again but I also did the same runs with similar results in Lake Michigan a few weeks back.

TWIN-SPINS

72mph,gps,freshwater,26 bravo.s,,,,

nailit

Sounds like your on the right track.. I would still see if a friend a as some stock 26s to see what the difference is..

Awash

Thanks Twin Spins thats pretty much what the boat test mags said in 2007

Yea no one I know has any but I have a couple more tests to run just to verify but the thing sure has some pretty high slip numbers, bblades is very close to me so they will get them in the winter and I may take advantage of thier prop test program.

nailit

I was just talking to Brett on Friday.. he mentioned the first suggestion would be to try spinning them IN which promotes bow lift. (Keithatlanta also had good results). I was going to try thi s weekend but the trip is about 14 miles so I will wait till I can just go out and test them. I Don't want to spin in reverse to long.

Just another option you could do with yours...