I've installed a tachometer on my '59 EC Triton and when motoring at full throttle it shows my Atomic 4 is only turning 1900 rpm. This seems a little low to me. What is the normal cruising RPM on a Triton with an A4?
John Ross
Triton #15 Yawl
Triton A4 RPM
- gone2ddogs
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- Master of the Arcane
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I never used my 2 bladed propeller but I have heard the 3 bladed Indigo lets the engine turn faster.
I don't know if I get hull speed at 1700 but I certainly get over 4 knots - probably closer to 5. That seems to be a good spot for economical cruising. With the throttle full open I think I get about 2100-2200 rpm (with the 3-bladed Indigo prop) and the stern is really squatting and I am pushing around a lot of water. I hate to post max speeds because someone will always call me on it or claim to get another 2 knots. Let's say 5.5-6.0 max speed in calm water. For that extra 300 rpm's though I am really just burning a lot more fuel and making more noise.
The extra revolutions will probably only help when bucking some waves.
Tune it like Mike said and you might just be surprised.
I don't know if I get hull speed at 1700 but I certainly get over 4 knots - probably closer to 5. That seems to be a good spot for economical cruising. With the throttle full open I think I get about 2100-2200 rpm (with the 3-bladed Indigo prop) and the stern is really squatting and I am pushing around a lot of water. I hate to post max speeds because someone will always call me on it or claim to get another 2 knots. Let's say 5.5-6.0 max speed in calm water. For that extra 300 rpm's though I am really just burning a lot more fuel and making more noise.
The extra revolutions will probably only help when bucking some waves.
Tune it like Mike said and you might just be surprised.
- gone2ddogs
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- gone2ddogs
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On an overnight cruise with my wife we were motoring out and the engine kept running slower and started misfiring. On closer examination I found the choke cable had come loose and the choke was completely shut. After fixing the choke now I get 1700 rpm at just above 1/2 throttle and closer to 2100 at full tilt.