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Old 06-15-2011, 02:06 PM
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virginian virginian is offline
Motorized Bicycle Elite Member
Join Date: Dec 2009
Location: McLean VA
Posts: 117
Default Difference between peak and continuous HP?

I have a Tanaka PF3300 that says it has a peak horse power of 1.6 HP and a continuous horse power of 1.1 HP. Which number is most relevant?

In an explanation that I read, the continuous HP is the power that can be generated when the motor is running at constant speed, and peak HP is what it can generate when it is being forced to slow down (like brake HP).

So, if I am running at constant speed, the most I can get out of the engine is 1.1 HP? If I am going up a hill and slowing down, I can get the peak HP - 1.6 HP - but just for an instant when the engine iRPM is at the point of peak HP? Is that correct? Does that make sense?

Last edited by virginian; 06-15-2011 at 02:08 PM.
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