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Old 24-09-2011, 10:30 PM   #1
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Country: engalnd
Location: south west
Interests: ski racing
Boat name: Jack'd up, hellraiser
Boat make: Bernico 19 ET, ring 16
Engines: merc 135, merc 175, yam 90
Cruising area: Plymouth

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Optimax revs

Took it out for the first time today
It's a 150 mariner opti on a p21
Tried it with the 25p pro v that came with it, saw 52 at 4800rpm
Tried a worked 21 4 blader, saw 5200rpm an 52mph

Also revs would just suddenly drop from 5200 down to 5 or even 4800.

Didn't know if anyone had any ideas or suggestions as we should really be seeing 5750rpm an looking for high 50's low 60's
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Old 25-09-2011, 11:11 AM   #2
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Country: Netherlands
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A 3 blades prop ''21
Enertia?
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Old 25-09-2011, 12:52 PM   #3
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Country: BRISTOL UK
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Boat make: Formula 36 pc
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Prop

Veater got a prop reckons will work. The one off push on....give him a bell.
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Old 28-09-2011, 10:15 PM   #4
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Country: engalnd
Location: south west
Interests: ski racing
Boat name: Jack'd up, hellraiser
Boat make: Bernico 19 ET, ring 16
Engines: merc 135, merc 175, yam 90
Cruising area: Plymouth

Join Date: Jun 2006
Location: south west
Posts: 1,170
Saying horn fault on the rev counter?
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Old 28-09-2011, 11:20 PM   #5
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Country: engalnd
Location: south west
Interests: ski racing
Boat name: Jack'd up, hellraiser
Boat make: Bernico 19 ET, ring 16
Engines: merc 135, merc 175, yam 90
Cruising area: Plymouth

Join Date: Jun 2006
Location: south west
Posts: 1,170
Says on the rpm gauge horn fault
An telling me to ease off throttle even at 4200rpm running a 25" pro vee!?
Any other ideas
As I sure have a problem!
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Old 28-09-2011, 11:59 PM   #6
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tpi
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Old 29-09-2011, 08:34 AM   #7
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Country: engalnd
Location: south west
Interests: ski racing
Boat name: Jack'd up, hellraiser
Boat make: Bernico 19 ET, ring 16
Engines: merc 135, merc 175, yam 90
Cruising area: Plymouth

Join Date: Jun 2006
Location: south west
Posts: 1,170
Are you just saying that with regards to our conversation the other day?
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Old 29-09-2011, 04:21 PM   #8
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no, you said it says horn fault and i can't think of anything else thats fitted to the horn
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