Offshoreonly.com - BBLADES Winter Special

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Quote:

Originally Posted by GAZ (Post 3644916)

Hey BBlades,

I have a 2002 Laveycraft 29' NuEra. It has the 500 EFI. I will be doing most of my boating at 7500' elevation. The boat came with a 26 p Bravo 1 that was being used at sea level. I have ran the boat at 3 different elevations with a 24 p Bravo 1.

Highline Res elevation 4700' 24 p B1 4400 rpm 52 mph
Havasu 500' elevation 24 p B1 5000 rpm 65 mph
Lake Powell 3700' elevation 24 p B1 4600 rpm 58 mph

I have a 22 p B1 that I'm going to try at Pueblo res elevation 4880' next week. I have a feeling that I will not be spinning up the rpms enough at that elevation with that prop.

Any thoughts on what prop I might use at 7500' elevation?

I think that I could have used the 22 p at Powell.

I'm not real worried about losing top end, I would rather have a good whole shot and use the whole rpm band my engine is capable of like 5000 rpm?

Any thought would be appreciated.

Thanks Greg

Quote:

Originally Posted by bbladesprops (Post 3645192)

GAZ,

Let's try a 21 Revolution 4 through the test program. It may need a adjustment but I believe the casting is the correct choice. Otherwise we will need to go to the 19 Revolution 4 and bump it accordingly.
7500' will require a decrease of 3-4 inches of pitch. typically.

Let me know if you want to try anything.
Brett

So we spent a couple days at Pueblo Res.....Elevation 4880 MSL. ran a 22P Bravo 1... 4750 RPM....57 MPH. Had a pretty good whole shot but would unhook right before planing and then hook back up.

Our home Reservoir Blue Mesa (7500 MSL) is still a couple weeks from opening up.

Brett, I know this prop is not going to work for me up here. I would like to talk with you about a test program and where you think I should start. I'm not super concerned with the top end but want the prop to grab all the way through my RPM range to around 4800-5000.

GAZ,

Please call me when you can and we can set up some testing options.

Brett

Very interested in the results on this one! I am in the exact same situation with my 28'Advantage. Keep posting updates! GAZ,Can't believe I missed you at Pueblo? I was in the Advantage Victory 28' with blue flames. Mabye next time.

Quote:

Originally Posted by TROR (Post 3652774)

I think I did see you there on Saturday maybe? Our Lavey is White purple and blue. We had a great few days, left on Sunday morning. What power and prop are you running? Where do you go mostly? I think we will probably get to Pueblo again this Spring we should try to meet up.

My Advantage has a 496ho, running a 22p bravo. Pueblo was 54 mph@4800 rpms. At Havasu I was 60@5000rpm . My boat planes out awesome & never blows out, I just want more top speed. I will be at Blue mesa a lot this summer & Navajo. Also planning some Powell trips. Us oxygen deprived guys need "special" props or 800hp

Quote:

Originally Posted by TROR (Post 3653483)

I hear ya on our "specialness". I'm going to call Brett Monday and see what we can come up with for Blue Mesa. Its was supposed to open up around April 15th but as fast as its melting looks like maybe earlier. Let me know next time you are going out and maybe we can get together.

Quote:

Originally Posted by TROR (Post 3653483)

Hey TROR, Talked with Brett on Monday we are going to try a Revolution 4 blade 19P. Blue Mesa has a boat ramp open now! Lake fork is open and they are expecting Elk Creek to open by end of this week maybe.

Very cool GAZ, will see about heading over mabye next weekend. Will let ya know. Hey Brett, on the same situation, would a 21p 3 blade work as good as a 19 4 blade? Mabye a better top speed? Poor handling? My boat planes well,handles great,just want more top speed for altitude. I am going to call ya to try out a couple props,just wanted your input on 3 blade vs 4 blade in the altitude.

THOR,
A 21 M+ will run 200ish rpm higher than a 22 B1. Lab Finishing it will allow it to spin easier and can allow for another 100-300 rpm depending on the recipe.
You will need to take those numbers into concideration when you decide what elevation you will run it at.

To answer the question further, if the 3 blade hooks up well, the top speed could be 1-3 mph faster.

Thanks,
Brett

Got my Rev 19 prop on Friday to try. Unfortunately the weather is terrible snowing and blowing. Hopefully clear up about Tuesday or Wednesday and I'll give it a try.