4 Blade Bravo 1 on a Checkmate?
 

Anyone used a Bravo 1 prop on a 251 Convincor? I have a Hydromotive QIV on there now that runs great but it seems a little bow heavy at higher speeds. It takes a lot of trim, past the drive limit switch, to achieve decent speeds on flat water. I read the Hydromotive is good for boats have natural bow lift like the old Convincors, but maybe it's the all junk on board for over night trips + the AC unit mounted mid ship.

my boat had a 22p B1 on it, boat runs very wet, bow down and needs lots of trim. it would hit the rev limiter all the time.

i tried a 23 Marage plus and a 23 marage plus done by bblades. both did nothing for my boat, seemed to blow the prop out more then the 4 blade.

i had bblades do me a prop, they did a 26 p and did there tweaks, tossed it on the boat and it picked up about 1 mph and seemed to ride up a bit and handled better but it was way under reving, sent it back and he touched it up. tested again and it was still off and lost its lifting.
so he sent me a 24 to test with, boat seemed to like it, it had a touch more bow lift but still had to trim it way up and it was a tad under reving.
so i sent it back. im guessing he is going to lab it for about 200 rpm, and put the cup in i need for a little more bow lift.

what motor is in your boat? depending on power i bet that 26 i have from bblades would work real good if you have a little more power then my boat.

502-550hp. Boat ran the best speed of 73 with nothing on it. Prop is a 23p Hydro. Rpm is around 5200-5400. With 2 people and all my gear it will run 69, but like I said I have to trim the hell out of it.

im going to guess with the prop i have you will drop about 200-300 rpm prob gain a touch of mph and the boat would ride better. however im no prop expert, can only go by my testing and findings

I have someone who is willing to lend me a 24p Bravo 1 to try. Thought I'd get some input before I stuck it on.

put it on, i bet you will like it, and its free so whats it going to hurt.

i would try it

Stock bravo 1's have been the best all around prop I have seen for a Convincor. I would try on your boat the 24p bravo A labbed one will blow out and rev during crusing speeds and is only good for top end, and is useless everywhere else. Checkmates have no problem carring the bow so a bow lifting prop is no good.

I've run Quad fours, Mirage +, and Bravo ones. I have found the Bravo 1 to be the best. The quads lifted the stern alot. The Mirage Plus blew out all the time when planing and turning. I think you will like the Bravo 1 best. I always went back to it for my 253 no matter what hp I was running.

my mate has a problem carring the bow. it rides very wet. i put a 23 mar plus on it and it road ok, but blew the prop out, labed and un labbed.

my 4 blades run much better, but i think with the rake right and labbed my 24 should be right where i need to be. we'll see wn brett finishes up the one i sent him yesterday:coolcowboy:

Understand what you are saying but you also state that if you trim it. It will come up and thats a Checkmate. Theirs no need for a bow lifting prop if your trim will lift the boat. Thats what trim is for.

Let us know the true stats of the prop. I recomended NO 3 blades for any Deep V Checkmate

We have a 2000 Convincor 259 w/ 454MAG (460HP). The best all around prop for this boat in my opinion (of those we have tried) is a non-labbed 24P B1. The boat spun a 23 Mirage Plus (came with the boat new), labbed 26 Bblades, 24 Hydromotive and finally the 24 B1. I like the 24 B1 for the best overall handling. The motor will only spin the 24 to about 5100RPMs which is where the motor makes peak HP. Hope this helps.
Rob

How did you determine this? With the HP he is running I am thinging a labbed 26 bravo would work the best!

ZT's have problems carrying the bow, at least my old ZT 280 did.

Hornet,

Obviously you have never been in a ZT hull. As stated here they ride very wet with alot of hull in the water. The recipe that BBlades has been using for Noyzee's boat and my old boat has to do a semi agresive lab and then add more cup back in, works great! With that being said Convincors and ZT are a totally different animals, for my experience Convincors traditional have no problem keeping the bow high!

sweet. was your 496 a mag or ho?

Purple, even trimmed way up, past the 1/2 way mark on the trim gauge it still rides very wet. i think brett was on the right path with the 26p but my boat just didnt have the power to turn it. i think if he does that to the 24 i sent him, i will be in good shape.


Magic, your right on. i can trim my boat up till i have a roost going, the boat goes no faster or slower after a point, and the r's dont change. the 26 bblades did for me seemed to work the best so far for carring the boat (still a little to wet) but with the lower HP mag i couldnt spin the prop past the 4400-4600 range. like i said, i tested the 24 b1 on my boat tuesday and it seemed to be pretty good but would only run about 4600-4700 rpm trimmed way up, so im guessing if brett labs it up nice, and throws what he needs to for the bow lift, im thinking i will be in good shape!!

i 2nd day aird him the prop, so he should have it today

ive ran 28 and 30 b1's 1.5 bravo, 88 251 convioncor, 509 blower, about 700hp... always seem to slip about 2800-3000 until you get the speed up, once at cruising speed about 45mph 3000rpm it hooks... i get alot of bow lift, he i am cruising at 70.

700 hp in a 251, i like your style!!!! whats she top out at?

got it running at the end of last year, i had it 84gps about 5400rpm, that was for a couple seconds, i havnt pushed the sticks all the way yet!! im waiting for an xr upper, 700hp is estimated

Too much slip its not worth the top end gain if any

Sorry my fault I did not know the ZT's were such a rock in the water that might explain why Noyzee boat will only run 60, I apologize I see the light now.

sabo, thats sweet!!! have any more pics of the boat?

purple, not sure why, but they are wet boats. im thinking maybe the single notch/step then the rear has the notch. the boat gets on plane faster then anything i have been on, it jumps right up!! i beat just about every boat from a dig to 50 that i have messed around with in the same class. once i hit the 50-55 mark the boat is about all done and i need little tweeks. like i said, its very wet. i think if i can get it up and out and get it at the right rpm i will be in good shape.

ive seen the zts up and out, the red one with the 500 in it is cruzin!!!! maybe its the lower HP, im not sure. im hoping the prop does its job on getting the boat up

heres a couple pics of my boat. its pretty much trimmed out here!!



http://img.photobucket.com/albums/v3...s/P6280400.jpg

http://img.photobucket.com/albums/v3...s/P6280396.jpg

http://img.photobucket.com/albums/v3...s/P6280391.jpg

http://img.photobucket.com/albums/v3...s/P6280390.jpg

heres what it should look like. or atleast close

http://img.photobucket.com/albums/v357/Noyzee/mate1.jpg

i also saw this. it looks like this one rides pretty wet as well, but its hard to say if he is trimmed up etc


http://www.powerboattv.com/newboat/2...kmateZT260.asp

Sure does look like you are pushing a lot of water :eek: You can't get no good speed numbers that way

yup, i spoke with brett, he said the ZT rides like that, mine is a little to much. he is going to tune the prop around that, should have it back in a little more then a week to test. let you guys know how it works.

yea, i know you have big power, i want it. lol

how fast was your boat with the mag?

so im not to far off. i run 58-59 with my 22p, i went 61.3 with the 26 labbed (had nothing out of the hole etc) and with a stock 24 i went 58-59 but under reving.
so with the 24 labbed hopefully i will see the honest 60 mark.
al my tests where done loaded up with all my gear. atleast or over 1/2 tank of fuel and always with 2 peaple on board.

There is not much of a substitute for pure HORSE POWER! :evilb:

trust me, id love more power, but right now im lucky to afford my boat never mind new motors. lol

Again how are you determine this:bsflag:

Trial an errow is how I learned it. What good is mid range slip with the boat reving burning fuel an not moving.

:kiss:

I guess you better change your prop guy! I picked up 5 mph gps cruise with my Bblades labbed prop. But what they hell do I know I have owned 2 Checkmates and since moved on, I have no dog in the fight so no sence of agruing with you:lolhit:

FWIW, my 28' Convincor has twins (which may not relate too well to this discussion) with 27P Mirage +'s and I can trim it way outta the water. It'll get very loose before it starts blowing the props out. I'm beginning some prop education so I'm learning. The extra stern weight may affect that, too. Some of you guys would know better than me at this point.

ive also ran the bravo with and without a nose cone, nose cones creat alot of mid slip!! i am running a 25 mirage 3 blade right now (until i get an xr or xr upper) i get a ton of mid slip if im not real easy on the sticks, that is with the nose cone, without it, it is not bad....

I have a nose cone. Previous owner had a monster power plant. I heard triple digits on a radar run. I don't think I need it but I'm pretty much stuck with. Worst part about it is the low water pick-up in the front of the cone. It's like a vacuum cleaner and sucks up anything.

We'll see.