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| Triumph 170 Discussion of the 170 series |
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01-03-2005, 06:39 AM
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Cruising RPM
I have a '04 170cc with a Yamaha 60hp 4 stroke. I need to know what the maximum, safest sustained cruising rpm is for the engine. I don't want to risk injuring the engine. I've been running it at approx. 4500rpms when going distances. Is this too much? I couldn't find anything in the owners manual. Thanks, Jason
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01-04-2005, 02:18 AM
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I've got a 04 170 with a 60 horse Yamaha 2 stroke that will top out at 5200-5300 rpms. I try to keep mine between 3500-4000 rpms. At that range I can run at 24-26 mph, and that's fast enough for me. I also did some checking and found this engine gets it's best mpg at that rpm range.
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04-21-2008, 03:32 PM
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Rpm
Just reading old posts and came across your question. Hopefully, you are still part of the group and will get the answer.If you look at the Yamaha web site and find the engine specs. You will find a number that states:60HP@????RPM. That RPM is considered the max for the HP of the engine. Sort of close to the red line. The more time you spend at max RPM, the faster the wear on the engine. That's why race engines are rebuilt after every race.
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Barry, AP Aboard "SURPRISE"
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