bought a prop from "Magnum" that balanced, uppitched a 22b1 to "true" 23p and added cup to raise bow running on a 26 sutphen with 26degree V. (thanks magnum.. looks awesome)

Is Mirage Plus cupped?? cup feels just like that?

sooo, hopefully this weekend, I will get to try it out if not raining!'

what do you think it will do??

25ol 454mag

props tried (normal cruise at 4k)
21p m+ hit rev max of 62...."for sale $200+ride"

23p m+ 48-4900 loaded anyday 62 most days best of 64.7 light and cold at 5k! "for sale $200+ride"
cruise at 48 normal load or 50 light with good water!

21rev4 61.8 flat water, just me and hit rev quick 80degrees and could not trim. awesome whole shot.. climbed out at 2500 and jumped at 3000
cruise at 46 flat water @4k.
4500 was sweet spot at 56mph but too high for any long period cruise, but was able to trim and felt it!

24b1 1150lbs of people + 3 coolers 85 degrees, 4500 max.. forgot gps
got up pretty well.. thought trim was acting up so didn't use and couldnt get on top, bro n law stepped into cuddy and nose fell down and took off w/any trim. (1 time I had trimmed too high and actually blew out when came down.)

24b1 2ppl 4750 at 63mph at 70degrees
cruise at 50-51

Hoping to get good cruise speed and keep rpms above 4800 loaded wot?

thoughts? can't wait to see what it will do and if I need to tweak to get cpl rpms back if needed?? hope its good as is!

Soooo, Have you had a chance to try your B1 23p(modified 21p)? I'm headed in that direction on my fever. I'm wanting to start with a B1, 24p to see what happens and if that's too much I plan to have it labbed down to a 23p like yours. I hope it worked out for you.

I had another post on the prop test. but here it is!!



Todays RESULTS!!
Prop: 22p B1 repitch +1,balanced and cup added (Leading Edge)
Bought from Magnum!

Water:argh... Flat again! only a lil rollers in Lake!
Temp 80 w/cool breeze
WOT 5000 at 62.0
could trim to bump rev w/ no gain in speed
4000 at 49mph
4500 at 55-56
trim at speed felt mechanical with bow raise. touch trim and bow raised quick

overall, I liked the prop! wot is perfect with load and water. Should put me close with load and better water in summer.

Also, considering the water was flat.. I would expect better slip #'s with a lil chop


>>> All in all I liked it.. I would guess, due to the balancing I was able to get 5k in flat water! Will wait to spring with load to see how a lil chop and weight responds..

good luck TS!

Ok. So the cruise is good and climbs out the whole loaded with no tabs!!

But now loaded wot is at 4950-5000 still but at 60 even with some good chop.. Feels like I need more cup to get the bow up????

Question: my repitched 22p to "23" with cup added by leading edge is not cutting it! Options??? Can I just add cup? Can BBlades still work it up with lil pitch Or rake or ??? Since I am already at 5k loaded

Want: get some top end back and keep bottom end too???? Like the prop?? Only weird thing is if your running pretty strong and trim down it falls to the side a bit?.. I guess from torque and bite of 4 blade??

I am under the impression that you cannot get both top end wot without sacrificing bottom end unless you have the power to turn a large pitched prop. For rexample, 500 hp turning a 26 pitch prop could theoretically get a good hole shot and have the hp to turn the larger pitched prop 70 or so mph. Plus, you have several variables...such as the number of blades, diameter of the prop as you increase or decrease pitch, and pitch itself. Not too be too nerdy, but there is an equilibrium point, which means where you increase the pitch too much, you lose speed...vice versa, keeping your rpms constant.

I posted a question under a different thread on why doesn't theoretical prop calculations work...I mean, if you have x amount of weight and turn y amount of rpms with z pitch, outside of hull design, which I know does and can create free speed, then most people should, key word, be able to obtain the same results with the same inputs....not trying to hijack thread, and I understand your inquiry. I seek some of the same answers you do.

You can keep on going but in the end you will find that the best prop might get you 64-65 with a poor take off and under rev with any kind of load or warm weather humid conditions and it will work ok when everything is perfect, air is cold and boat is light on fuel/no passsengers, that will be your speed run prop. There is no "super magic " all around prop though that is going to give you the top speed you would like to see AND drive nice in warm weather with a full tank of gas and your buds in the boat, I wish there was. I chased the same exact thing you are doing when my 2000 272 Baja was brand new and stock, I broke 65 once on fumes with perfect air, no gas and no passengers, no cooler etc. Most of the time with 3/4 tank of gas and a couple people on board I would be lucky to hit 62-63 gps. I think I tried 5 different props that summer too. Ultimately to get any kind of measureable speed increase it will take more power. Another thing is I have in the past 10 years highly modified my 272, it will run to 100 mph, can cruise real nice at the low 60's these days and I have a hand held gps and built in dash gps, EVERY STOCK BAJA 25 OUTLAW and 272 I RUN ACROSSED WANTS TO RACE AS THEY THINK MY BOAT IS STOCK and on MY GPS I have NEVER seen a stock one (mag 454/502) that breaks 65 mph and most just barely break 60 by 1 or 2 mph so don't believe all the bs everyone that has these boats tells you either. I have had guys tell me their stock 272 ran 70 plus mph, my XR drive does slow me down but when I take my blower belt off off my 540 and run N/A (it made 650 hp on the dyno with generous sae factor and no accessorys) my boat will only run 75 under PERFECT conditions and more like 72-73 fully loaded, it takes HP to get these things to run much faster than you are going and the speeds your acheiving and seeing are typical and respectable for what you have, Smitty

23 Rev4 may be the ticket. I LOVE the Rev4 on my boat. Great holeshot and cruise, much better bow lift than a stock Bravo and just as fast as a Mirage +.

I am not really trying to break 65... Just trying to get back to 63ish with current prop... I was able to see 62-63 loaded and hot with the m+ but loaded holeshot was slow. The 4 blade helped with that.

I would like to try a 23 rev 4 as I did like the 21 I tried, but ran into the rev and cruise sucked... It was weird! It had a sweet spot at about 4500,,,, 4k was 46 and 4500 was 56!!

So has anyone tried a 24b1 vs the 23 rev 4?? I could only spin the 24b at 4500 "very" heavy load and 4700 light.

What would I expect to spin the rev 4?

Or can I rework the prop again by blades??? Een after it was worked?? Maybe I need to direct a thread toward them or call?? I think I just need more cup??

Thanks

You should call bblades, he can fine tune a prop several times, Good luck, Smitty

You are in a similar situation I am in. I can go fast on top with M+'s but they suck for everything else. The Bravo 1's are fantastic cruise and good everywhere but top end where they sacrifice a couple MPH. The way the Bravos sound with trim sounds exactly like they do on mine. It's like they are connected to the water and the hull responds. With the M+ it's like the drives trim and the hull doesn't respond much if at all.

What I have done for now is just stick to the stock bravos. It's not about how fast you can go, but how long you can go fast and the super cruise they offer is good for me.