Upgrading From Bravo Xr To...????
09-26-2011, 11:17 AM
#31
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Waconda, What Hp is your black thunder? I love the boats but have not heard of many going over 100. Obviously Coolerman does 129.
BMAX lower gears are BRAVO XR gears. just like a imco sc, teague platnium, max machine worx, all american drive service.
Swimmng with a arneson is misleading. Swimming with ANY surface drive with larger and sharper props is all the same. Arneson, #6, M8, Indy, X power, NXT, etc. Sick of people singling out the arneson.
BMAX lower gears are BRAVO XR gears. just like a imco sc, teague platnium, max machine worx, all american drive service.
Swimmng with a arneson is misleading. Swimming with ANY surface drive with larger and sharper props is all the same. Arneson, #6, M8, Indy, X power, NXT, etc. Sick of people singling out the arneson.
09-26-2011, 11:25 AM
#33
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Waconda, What Hp is your black thunder? I love the boats but have not heard of many going over 100. Obviously Coolerman does 129.
BMAX lower gears are BRAVO XR gears. just like a imco sc, teague platnium, max machine worx, all american drive service.
Swimmng with a arneson is misleading. Swimming with ANY surface drive with larger and sharper props is all the same. Arneson, #6, M8, Indy, X power, NXT, etc. Sick of people singling out the arneson.
BMAX lower gears are BRAVO XR gears. just like a imco sc, teague platnium, max machine worx, all american drive service.
Swimmng with a arneson is misleading. Swimming with ANY surface drive with larger and sharper props is all the same. Arneson, #6, M8, Indy, X power, NXT, etc. Sick of people singling out the arneson.
Curious if the other mfg's you mentioned have the same build procces for the lowers as John does prior to assembly?
09-26-2011, 11:54 AM
#35
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John at the bravo shop might have some tricks for his lowers. Max machine worx, imco, all american drive survice, all claim they have special tricks to. These tricks still do NOT make xr gears bullet proof. XR gears are junk no matter what. NONE of this makes any difference if the MAIN POINT of the thread which is what is a economical way to upgrade his drives. Well the most economical way that gains him strength at the best price, and easiest would be a SCX upper and use his SC lower. There will be no negative side effects.
09-26-2011, 01:42 PM
#36
arneson-industries.com
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When you start pushing the limit of any given engine and drive package changing the drive ratio is critical, so going from a merc XR 1.50 to a Bmax 1.32 is huge and most people under estimate that. So speaking with someone like Brett at BBlades is a very important step in the process.
I'm not talking at all about making a Bravo drive or Bmax a surface drive.
We use the back of our boat and having ASD #7 sticking out there past the swim deck 12" with trips are not for me. I think Rik has a great product for the right boat and the right person just not for me on this boat.
I'm not talking at all about making a Bravo drive or Bmax a surface drive.
We use the back of our boat and having ASD #7 sticking out there past the swim deck 12" with trips are not for me. I think Rik has a great product for the right boat and the right person just not for me on this boat.
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09-26-2011, 02:59 PM
#37
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Bmax has been on the boat since April, gears have about 40 hours on them so far. Best mph so far is 133.8, Swinging a 34 pitch Maximus with a 1.30 ratio. Still have yet to really run it out as I'm still dialing in the setup with the hull.
09-26-2011, 03:05 PM
#38
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Datalogger shows 46 to 133.8 in 14.4 seconds, within 2280', with the throttle never exceeding 77%. So far I've spun a 34 pitch Maximus through a 1.30 ratio to 6200 rpms. The prop speed is so high that the blades spread out and forward. I started with about .700" clearance between the tip of the blade and the upper after we cut off the cav plate, and it carved almost .500" out of the upper with the tips of the blades. Working on finding a new prop to test out, something a little less prone to stretching...
09-26-2011, 05:26 PM
#39
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I'm impressed, is your lower gear set a 17/19 then? The 15/19 1.50 gears I run used to last 10-12 hours with a little over 1000 hp and ft lbs of tq, I stretched this out to 40-60 hours or so by experimenting with different processes and settled on cryo/iso rem finishing along with premium synthetic oil (currently running the bravo shop stuff but was running Amsoil). I did switch to 1.36 lower gears that were cryoed, isoed and dlc coated this year and was eager to see how they held up but then I sheared off a billet vert shaft which destroyed everything in the lower including the case and gears so I am back to running the 1.50 gears. Im asking about your set-up because I am always curious in what works out there and what don't. I sheared off a billet prop shaft turning alot less prop too so you are doing pretty good, Smitty
Last edited by articfriends; 09-26-2011 at 05:33 PM.
09-26-2011, 05:28 PM
#40
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John at the bravo shop might have some tricks for his lowers. Max machine worx, imco, all american drive survice, all claim they have special tricks to. These tricks still do NOT make xr gears bullet proof. XR gears are junk no matter what. NONE of this makes any difference if the MAIN POINT of the thread which is what is a economical way to upgrade his drives. Well the most economical way that gains him strength at the best price, and easiest would be a SCX upper and use his SC lower. There will be no negative side effects.
