haynes internal combustion engine
Uploader Comments (ftfw)
All Comments (28)
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i've got one and their really good for people who like to build things because u build it
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@jimikestell1 The motor has a firing stoke than a decompression stroke where the exhaust gases are expelled from the block
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@jimikestell1 Yes. Engine should work exactly the same as in this model.
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@MrBorderghost I am aware of that. In fact, some 4 cylinder sports cars have a firing order of 1432, since the pistons are balanced in another way. For instance, pistons 1 and 3 would be at TDC while 2 and 4 are at BDC. I was specifically referring to your model though. The fan should be rotating the opposite way on the Haynes models, giving a firing order of 1342. Cylinder 1 being at the front of the engine. Still a cool model though. :)
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@cicola If tou are going to run it at that rpm i would coat every moving part in slick 50 everytime you want to use it....
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@JimLem You can have 2 firing orders on a 4 cylinder 1342 or 1243....
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@jimikestell1 Suck, Squeeze, Bang, Blow.
Suck is air/fuel intake, Squeeze is compression, bang is ignition of fuel and blow is exhaust gases. A 4-stroke bike engine is exactly the same as a 4 stroke car engine but all of the parts are smaller and there is no fan (just a radiator).
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4 stroke engine cycles are intake - compression - ignition - exhaust, with two revolutions of the crankshaft, the firing order of this model is 1 - 2 - 4 - 3. If cylinder 1 is on the ignition stroke, cylinder 2 is on compression, cylinder 4 is on intake and cylinder 3 is on exhaust.
2 stroke engines fire on every second stroke with one revolution of the crankshaft. the way fuel is introduced to the chamber differs between 2 and 4 stroke
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I bought 2 of these. The engine is running backwards. I reversed the wires on the motor on mine. The fan is pushing forwards not pulling backwards. The engine is pulling down on the cambelt side with the tensioner. Should be on the other side. The camshaft is very porly designed and is not accurate. How do I know? I teach motorcycle engineering for a living. I don't claim to know it all but I know a little. Still a lovely little model though and lots of fun to build and use. Thanks for posting.
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Great model. Seems to be rotating in the wrong direction though. Firing order is reversed.
ive got a motorbike thats 4 stroke does that mean that its only firing every 4 strokes ?
jimikestell1 2 years ago
yeah i'm guessing so not sure if a bike engine fires in the same way thou
ftfw 2 years ago