Posted by The Dukester on October 24, 2016 at 09:17:48 from (204.106.241.43):
In Reply to: Re: 2 cyl wisc posted by Moresmoke on October 24, 2016 at 07:24:59:
In a 4 cycle engine where the pistons fire 180 degrees apart the pistons are on opposite throws of the crank 180 degrees apart. Number 1 fires at or near TDC then the crank rotates 180 degrees and number 2 fires at it's TDC, then the crank rotates 540 degrees before number 1 fires again. This is known as "staccato" firing order....like John Deere 2 cylinder engines operate. Two cylinder 4 cycle engines with both pistons on the same crankshaft throw that fire on alternate 360 revolutions of the crank similar to British 2 cylinder motorcycles and the early 30-60 model E Rumely tractors are "alternate" firing 2 cylinder engines. The alternate firing engines run smoother than the staccato,firing engines, but require substantial counterweights on the crankshaft to offset the imbalance of both piston/rod assemblies being on the same single throw of the crankshaft. The trade off is the staccato firing engines usually require a larger flywheel to dampen the pulses of such an uneven firing order. The exhaust note is different.....John Deeres p-putt, huff, huff, p-putt, huff, huff, the even firing engines putt, hutf, putt, huff when idling slowly. (I think I got this right).
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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