Twenty or so years ago an actual pedal powered rotary mower was manufactured. Local bicycle shop bought one and several of the more athletic bikers tried cutting grass. Completely unfeasible, which should be expected. Less than ten top bicyclists in the world can generate one horsepower and that is only for a very limited time span. These leading bicyclists can generate about 1/2 continuous horsepower. How many engine powered mowers do you know that offer less than one hp? An average rider could expect about 1/4 continuous hp. A reel mower is more efficient therefore would require less power, but still well beyond the typical homeowner's capability.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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