eeasy

Anybody running stock(non-labbed) 30p Maximus on their 42? I was told that they are not very effective as is and need to be labbed. I am looking for better planing and efficiency at cruise. Thanks

Single With Twins

iTrader: (1)

no i am running 5 blade 29 hydro's, work great for me....someone will know better than i on here though.

BZ

I ran the 30 on my 06 with 525's (non Lab) and could only get to 4800 rpm...I believe U are right you need to lab them to get the correct rpm's but I believe it can be done.......BZ

Talk to Bret (BBlades) he is the man

eeasy

Are you running the p5 or p5x? What rpm's are you hitting? I am also looking at hydros but was worried that with 29's I might hit limiter.

Single With Twins

iTrader: (1)

I am pretty sure P5X as they are to get more stern lift. My motors are 650hp and with the five blades running 5350RPM at WOT.

Jay

gerritm

I am running Mercury Labbed 30P Maximus on my 05 EX with 525's. They work very well at cruising and top end. I can blow them out when coming on plane if I don't take it easy. I can only hit about 5000-5100 rpm @ WOT. They seem to be more fuel efficient all the way around. Top end I hit around 82-83 with 2 people and 1/2 load of fuel. I just installed a set of Mercury Smart Craft engine system monitors and will be able to see actual fuel usage.

I had a set of 28P non-labbed Maximus and I think I like those better. I traded them for the 30P labbed. They seem to come out of the hole and on plane better, still had great mid-range and top end was about the same. The only problem with them was that I hit the rev-limiter quite a bit. It would bounce off the rev-limiter any time I got a little air. If I had to do it all over again I would have kept the 28P and had BBlades work them to keep my rev's down but still give me a little extra on top end and maintain cruise and hole shot.

Tarheel

Easy,

My 42 has sportmaster shorties and it came with 32 labbed maximus with the diffuser ring. Its a 2004 but it was dialed in by Brian Forehand at Fountain...91MPH (at 36F air temp in March).

We have so much trash on the river lately that I am running my non-labbed 32's that are back-ups.

The non-labbed props give up nothing in the mid-range and out of the hole. They give up about 4 mph on the top end and about 300RPM. I think the shorties are why I can turn 32's and not 30's.