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Old 21 May 2020, 02:23   #1
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RPM Question

Hello ..

I went from a Yamaha 60 on a AB15 to a Sealegs 7.7 with a 200 Etec.

The Etec is a 2014 G1 and has about 200 hours now ..

The sealegs cruises at 30mph at 4000 RPM .. when the water is like glass i would like to bring it up to 4500 RPM or 4800 RPM but feel like i am abusing it.

Reading coincidentally I hear people talking about running 4500 RPM all the time .. what are people's thoughts .. perhaps I'm too paranoid ? ..

The boat is properly propped.. I once took it to 5800 RPM and was doing about 45 mph according to GPS.

This size Sealegs calls for 150hp with 200hp max. The boat is extremely fast out of the hole.. it's like a sports car.
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Old 21 May 2020, 04:50   #2
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They are designed to be flat out for long periods of time. Grab a handful and enjoy it.
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Old 21 May 2020, 08:26   #3
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Quote:
Originally Posted by Rick Fisher View Post
Hello ..



I went from a Yamaha 60 on a AB15 to a Sealegs 7.7 with a 200 Etec.



The Etec is a 2014 G1 and has about 200 hours now ..



The sealegs cruises at 30mph at 4000 RPM .. when the water is like glass i would like to bring it up to 4500 RPM or 4800 RPM but feel like i am abusing it.



Reading coincidentally I hear people talking about running 4500 RPM all the time .. what are people's thoughts .. perhaps I'm too paranoid ? ..



The boat is properly propped.. I once took it to 5800 RPM and was doing about 45 mph according to GPS.



This size Sealegs calls for 150hp with 200hp max. The boat is extremely fast out of the hole.. it's like a sports car.


Itís a DI 2 stroke, drive it like you stole it.
Etecs are susceptible to blowing the EMM if the battery cables/circuitry is not up to scratch. Just keep that side of things in order & enjoy.
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Old 21 May 2020, 12:54   #4
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If the motor is correctly propped to run to its full wot rpm range factory stated as loaded you're already there, nothing to fine tune. If you're worried about an excessive fuel consumption running higher rpm range, throttle enough for the combo to maintain a perfect plane at whichever rpm the motor is revving at.

Happy Boating
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Old 21 May 2020, 13:00   #5
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My only concern is damaging then motor.
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Old 21 May 2020, 13:12   #6
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My only concern is damaging then motor.
Nothing will happen, besides nobody in its right mind will be ruuning wot 100% of the time. Been trying to blow a 2 strokes motor by slightly over revving it beyond its max wot rpm range for more than one hour and nothing has happened so far, just use the right oil factory recommended by the motor manufacturer and all will be OK.

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Old 21 May 2020, 15:45   #7
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Production engines are all mildly over engineered or slightly pinned back from max capacity if you will. They need their necks ringing now and again, I’d go as far to say you’re not doing it any favours babying it all the time. Same with cars, they benefit from it on occasion.
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Old 22 May 2020, 07:09   #8
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Production engines are all mildly over engineered or slightly pinned back from max capacity if you will. They need their necks ringing now and again, Iíd go as far to say youíre not doing it any favours babying it all the time. Same with cars, they benefit from it on occasion.
Commonly referred to as an 'Italian tune-up'.
Not a bad idea before the MOT!
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Old 22 May 2020, 15:07   #9
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Thanks for all the help guys .. I get it .. it's not a chevy lol
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Old 22 May 2020, 17:10   #10
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Thanks for all the help guys .. I get it .. it's not a chevy lol


This is the font of all etec knowledge

https://www.etecownersgroup.com/
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