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Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   Low hour Bravo XR blows after on propshaft dyno (https://www.offshoreonly.com/forums/general-q/367835-low-hour-bravo-xr-blows-after-propshaft-dyno.html)

Baja Rooster 08-04-2020 10:41 AM
Is it feasible the resistance was in the failing drive until the engine built enough power to overwhelm it?

Bigsbetter 08-04-2020 10:53 AM
Originally Posted by Baja Rooster (Post 4751395)
Is it feasible the resistance was in the failing drive until the engine built enough power to overwhelm it?
Hmmm, that’s a thought, but I’ve been trying to address this issue since I bought the boat in March of this year. The drive fluid showed no signs of trouble and no signs of metal during the past few months.

F-2 Speedy 08-04-2020 11:24 AM
what is the boat ?

Bigsbetter 08-04-2020 12:10 PM
Originally Posted by F-2 Speedy (Post 4751401)
what is the boat ?
rare 2001 Formula 292 with a single engine. Built for class 5 racing, no cabin interior, built light.

Bigsbetter 08-04-2020 12:12 PM
But, the boat was never raced, kinda been converted to a performance pleasure boat since it was new.

Griff 08-04-2020 12:29 PM
200 hrs on XR gears is a pretty average lifespan. Most of the time its the upper gears that let go though

Bigsbetter 08-04-2020 01:11 PM
So what is recommended here? Upper gear inspection/ replace the upper gears and also replace the complete lower assembly?

Drock78 08-04-2020 01:36 PM
Go with XZ gears in the upper. They will last alot longer. Full rebuild on lower as well.

Keith Atlanta 08-04-2020 02:00 PM
Originally Posted by Drock78 (Post 4751429)
Go with XZ gears in the upper. They will last alot longer. Full rebuild on lower as well.
Yeah, especially since the OP said its a light layup. Makes sense.

F-2 Speedy 08-04-2020 02:14 PM
Originally Posted by Drock78 (Post 4751380)
Lol. Was driving and missed that part.

Usually it's the gears that fail but anything is possible I suppose. I'm thinking it may be the prop if you changed and spun the other with no problem.
just bustin ur ballz


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