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darrel from meraux
MMT Addict
Joined: Wed Feb 18, 2009 9:31 pm
Posts: 584
Location: Meraux, LA
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 RPM! i just installed my tiny tach today. im not to sure what im supposed to run at. i idle at around 1200 and wide open with no load(not in water) i get 3800 max. to me both numbers seem to ver fairly low can anyone help?
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17x54 custom CC with stage 3 GTR.
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| Fri Feb 27, 2009 7:17 pm |
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Gigafowl
MMT Elite Member
Joined: Tue Jan 13, 2009 7:19 pm
Posts: 6441
Location: Trinity Bay - Texas
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Re: RPM! Sounds right for a stock motor...
Over 4000 and you need performance parts to stay reliable....
Real question is RPM at full throttle while running in deep or shallow water...
That will tell you if your prop matches you rig weight and power...
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Eat - Sleep - Hunt ! ! !
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| Fri Feb 27, 2009 7:32 pm |
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RC
MMT Pro Member
Joined: Tue Jan 13, 2009 8:01 pm
Posts: 139
Location: Northern Indiana
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Re: RPM! anywhere from 1050 to 1200 for idle, personal preference, just enough to keep running while in gear in the water. Max outa the water, I'd go 4200 on a stock engine, it'll never spin that with any load, so no use going over that.
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| Fri Feb 27, 2009 7:34 pm |
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craig
MMT Elite Member
Joined: Tue Jan 13, 2009 7:53 pm
Posts: 7515
Location: Chauvin
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Re: RPM! Not really. The maufacterer (briggs) says 3600 rpm for most of their engines. So 3800 is actually a good number. You could possibly turn them up more though.
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1750 GatorTail Extreme/Stage 3 37 GTR HD
Procrastination is a lot like masturbation. Sure it sounds great at the time but, in the end your only f--k--g yourself.
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| Fri Feb 27, 2009 7:35 pm |
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mcnemar1982
MMT Sponsor
Joined: Mon Jan 19, 2009 4:03 pm
Posts: 2216
Location: Walker, Louisiana
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Re: RPM! Thats some good numbers. 
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| Fri Feb 27, 2009 7:39 pm |
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darrel from meraux
MMT Addict
Joined: Wed Feb 18, 2009 9:31 pm
Posts: 584
Location: Meraux, LA
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Re: RPM! ok so now my question is how do i get my idle up while wide open with no load. i only need to get it up 100-150 rpm. iv heard some talk about springs. will this help?
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17x54 custom CC with stage 3 GTR.
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| Fri Feb 27, 2009 7:42 pm |
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Gigafowl
MMT Elite Member
Joined: Tue Jan 13, 2009 7:19 pm
Posts: 6441
Location: Trinity Bay - Texas
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Re: RPM! Why do you care ???
What matters is what happens when its in the water....
What do you turn running wide open - light load ???
If you were turning 3800 like that it would be different....
_________________
Eat - Sleep - Hunt ! ! !
"It is good to have an end to journey toward; but
it is the journey that matters, in the end."
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| Fri Feb 27, 2009 7:47 pm |
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deadbird8
MMT 1000 Club
Joined: Wed Feb 04, 2009 7:50 pm
Posts: 3833
Location: Old East Dallas, Texas
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Re: RPM!
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Excel 1851F4 w/ MB35HD+R CDI with a little bit of this and little bit of that
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| Sat Feb 28, 2009 12:44 pm |
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Gigafowl
MMT Elite Member
Joined: Tue Jan 13, 2009 7:19 pm
Posts: 6441
Location: Trinity Bay - Texas
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Re: RPM! Deadbird,
Ya'll are talkin RPM on a motor with a "surfacing prop" - where prop is
catchin air - as designed, and RPM come a bit easier....
Our man is running a longtail - which is not a "surfacing prop" - so what
matters in his case is RPM under load - which he has not posted....
And if he is not getting close to the RPM limit imposed by his governor,
why adjust it ???
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Eat - Sleep - Hunt ! ! !
"It is good to have an end to journey toward; but
it is the journey that matters, in the end."
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| Sun Mar 01, 2009 7:07 am |
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deadbird8
MMT 1000 Club
Joined: Wed Feb 04, 2009 7:50 pm
Posts: 3833
Location: Old East Dallas, Texas
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Re: RPM!
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Excel 1851F4 w/ MB35HD+R CDI with a little bit of this and little bit of that
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| Sun Mar 01, 2009 8:39 am |
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