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Posted - 04/02/2015 :  8:43:10 PM  Show Profile  Visit donzimama's Homepage Send donzimama a Private Message  Reply with Quote
Great fishing club meeting last night guys
Been over a year since the last topic in here. Who's ready to wet a hook?? I know we are looking toward to it.

Got the boat running prime a few weeks ago. Stepped up the props a few sizes up, got new fuel filters and some snake oil ready to rumble come fishing time. Sea trialed our new performance 1" vents on a set of 26pitch bravo 1 propellers. For those of you that know the boat it has always suffered a hard to plane condition due to the high revving not so much torque in low rpm range 250xs engines pushing a fully loaded boat with fuel for the long run. Wit the help of b and d automotive, mercury racing and our local machinist, we were able to step up to 26p from 24p bravo 1 propellers while curing our slow plane condition with the vents. The 4 1" holes essientially vent exhaust gas in front of the props causing an aerated prop cavitation, which in turn allows the xs engines to turn 4k out the hole instead of loading up at 1800 rpm. Once up to speed, the flow of water psi over The props seals off the vents and allows them no longer to cavitate and allows them to bite the water properly. Something to look into if you are runnin 2 strokes, or 4 strokes and want to step up prop pitch for speed, economy, or just suffer a hard to plane condition like we did. Previous speeds 1/4 load with 24p bravo 1s non vented, would not plane hardly without full tab in the corner throttle, when it finally came up it would top out 5750 at 68 69 mph. With the new 26p vented bravos,it planes much easier, making 4000 rpm at half throttle, we did run 68 at 5500 and didn't push it very long as we werent trying to break anything before season :) she's got 72 in her now with much easier drivability. If anyone is interested in having their props vented locally contact me here or at a meeting.

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