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Xpress H22B
So you Xpress guys,
I have a Xpress 22ft bay with a 200 SHO recently flashed to a 300, I run a 10"Atlas hydraulic jack plate and currently a Mercury Tempest Plus 22p prop. Prior to the flash I was about 58 ( gps) and just under 6k rpm's.
2 questions: What pitch prop do you think I would need to run now? And what improvement would think I would gain?
Thank
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What is the rev limiter set at? If it is 7000 or more just run the 22" and see how it performs.
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Kept the rev limiter at factory setting, 6250.
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If I had access to a 24 Tempest I might try that.
You were turning the 22" just under 6000 before the flash so I would think you gained enough h.p. to turn a 24 at 6000-6200.
Let us know how this works out. It is likely many others considering a flash will be watching this thread.
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So, I ran a new 23 p Tempest plus and got up to 66.3 mph ( gps) with a bad chime walk. May have been trimmed a little too high. Ran a smooth 55 mph at 5k. I did drive through some of the chime walk at reached 68.2 @ 6200, but had to back off. I never hit factory rev limiter.
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More seat time will help with the chine walk.
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Update:
So I had a Tempest plus 22p prop. I ran the 23p then took the 22p to Bo @ Bo's props told him what he 23 was doing and he worked the 22p.
I ran it at 68 mph ( gps) and 6150 rpm. The boat did not start to walk until I tried for a little more trim. Not sure if I have it all just yet, going to
try a 23p Scorpion next.
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Danny, I don't think you will have many aluminum bay boats passing you at 68 mph.
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Update:
Ran the 23p Scorpion yesterday with not great results Going to call it good with the worked 22p Tempest Plus.
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Good info! I wonder if they can flash the F200XB?