Re: Verado Prop Question/Help
 

We ran it with 3 people and about 65% fuel and we got 66mph @61-6200rp and a good quartering sea...then ran it with 85% fuel and one person and got 67mph.

Re: Verado Prop Question/Help
 

Hmm are your gas tanks located towards the rear of the boat or under the Centor Console? If they are on the rear then the more gas u add the faster the boat will run because it will make you trim out less and use the thrust of the props to go forward. The weight of the gas is making you trim less therfore you have more efficiency.

Re: Verado Prop Question/Help
 

Okey..guys new test today..and you can compare to the above posts/test results.
Replaced 24 pitch Bravo 4 blades with 26 pitch bravo 4 blades today.
Top end RPM dropped from 6250-6400 to 5700 -6000. Saw 6000 only twice.
Top speed was 65-66 1/2 mph@ 5700-6000( and cruise speeds were:
46@4000
58-59@5000
63@5500
So I'm thinking a 26Bravo 4blade labbed would get me back up in the RPM range of 6200 0r a little more and then the top speed should increase and hopefully the cruise speeds would remain the same or slightly better.
Whatta ya think?
Still trying for the 70-72mph target
Or should I turn a stock Bravo 4blade down to a 25*
Or pitch the 24 Bravo 4blades up to a 25*

Re: Verado Prop Question/Help
 

BBlades or Throttleup any ideas? HUH?

Re: Verado Prop Question/Help
 

Sorry this slipped through the cracks. I've been out on personal business for a few days last week.

The 26's worked will help but I think I'd like to try another option in 4bl prop technology.

If you would consider discussing it, please give us a call at your convenience.

Re: Verado Prop Question/Help
 

Brett,

Thanks for sending the 25P Mercury Revolution 4 blades. You really know your stuff. Here is the test summary. Chuck and I were able to run two sets of props today. We tested 24P Bravo Ones and the 25 with 70% fuel and 1 ft chop. I will also list the 26P Bravo performance again to compare. The results are as follows:


24P Bravo Ones
@4000 43.5
@5000 53.3
@5500 59
@WOT (6400) 67.5

26P Bravo Ones
@4000 46
@5000 58.5
@5500 63
@WOT (5900) 66


25P Revolution 4
@4000 43.5
@5000 58
@5500 64.5
@WOT (6050) 70.5


The boat ran 70.5 exactly like you predicted. We only saw 6050 RPM max at that speed. We have 400 more RPM to play with. My concern is that we really didn’t increase at 4000rpm with the 25P over the 24P. I would like to get 46-47 @ 4000. The boat also chin walked at 68.5-70MPH(we had to trim it a bunch). It doesn’t do it typically at 65 or 66 w/o quartering seas. Could this be the props or the drives, or both? Can we lab them and get it to 6350?

Re: Verado Prop Question/Help
 

One more thing. When I ran the boat at WOT and no trim. The boat pulled 5700 and 66.5mph the boat didn’t chine walk. Only when trimmed out all the way.

To stop the chine walk it I would trim it in a little until it stopped. That was about 5800 or 67MPH. I also calculated we only had 8% slip with the 25P at WOT! Could this be true?

Re: Verado Prop Question/Help
 

I come up with 9% slip. Awesome!! I'm glad you liked them! I thought you would.

Yes, we can Lab the props to get the additional rpm and more speed. Also, the Labbing will help the over trim chine walking issue.

Call me when you have time.

Re: Verado Prop Question/Help
 

BBlades-
Call crb76.. (713) 540-0171)..we did some tests on the new props today and have very interesting info.
Have a Good Turkey Day!!