38 Avenger Prop Question
 

I have a "95" with 502's/415's in it...not a rocket by any stretch. I'm looking for thoughts at whether to get my Bravo 1- 4 blades labbed at $1,000 (with shipping) or just blue printed at $500. BBlades advised - 2 to 4 mph gain with labbing maybe half that with blue printing. I have one prop that has a couple dings, so I'm going to have to do something - one way or the other. Are there any other benefits for my boat going one way or the other...Thanks.

2002 380 PQ, had some damage, sent props to BBlades repaired and labbed. 28 4 blades, 3 or 4 mph gained, not trying for speed, just new they need some attention. Very happy. Great people.

Some interesting reading for you...

http://www.hydromotive.com/info.html

Just curious what top speed & rpm you're getting; how much trim? 525's in yours?

496, runs around 67, might get alittle more out of it, tanks are always full and wife has 2 tons of stuff on boat. Forgot the RPM, think it was 4400 to 4500. When my memory kicks in I will post.

2000 380 496 HO B1 labbed at BBlades 30 pitch 74 MPH 5000 RPM.

Don, sorry to hi-jack your thread...remember bluepriniting removes any variances allowed during manufacture bring it back to 'blueprint' design and I understand labbing will modify the prop to optimize that design.

Guys, thanks for the speed info. I got 88 mph @ 54-5500 rpm last year (yeah that's the Whipple recommended rpm). That is with stock Bravo 30"s. Prop slip seems way too high at 16%I'm not sure if I should just have the Bravos labbed or go with 28" Maximus' labbed???
88 mph was on flat water and allowing the GF to load the boat LOL.

Nice speeds!!
I don't think the 90mph mark is too far off the radar!!

I have a 97 38 Avenger with stock 502mpi 415hp mags. With stock factory 25p Mirage plus 3 blades spinning in the best I would hit on the GPS was 69.1 mph at about 4750 rpm. I had Bblades lab my props the first time and seen no speed or rpm change but both engines were now the exact same rpm at wot. I sent them back and they tweaked them again for no charge and I got about a 75 rpm increase and now hit a best of 70.5 mph with no loss in cruise speed at lower rpm ranges. I will probably see if I can have them tweaked a little more to get closer to the 5000rpm range where you want a 502 mag to be. 3 blades will give you the best top end speed. Bblades runs a winter special after the new year.