Posted by jdemaris on February 20, 2010 at 10:10:59 from (72.171.0.146):
In Reply to: HP vs HP posted by rustbucket on February 20, 2010 at 08:52:22:
Some HD engine companies post horsepower by full time sustained use, and not just max. power for a short time. That adds to the confusion of just Net versus Gross horsepower. Cars, light trucks, and lawn and garden equipment often use those inflated short-time max power specs.
Historically, engines sold for heavy duty use had specs posted for power they could supply 24 hours a day, and every day. Now, to compete, many post figures that are higher and based on high power for short periods of time.
Lawn and garden equipment has just about always posted power specs much higher then can be sustained on a full time basis. Recently many have been forced to lower the ratings. That's why you'll see engine ads now for engines listed as "formerly 20 horsepower" or something similar.
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