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What do you think? Give us your opinion. Anonymous comments allowed.
#74 - peggscott (01/29/2013) [-]
Smart, But the combustion at the bottom pistons would not not be converted into the same amount of power because they also have the weight of the piston itself to push up...
#93 to #74 - tomob (01/29/2013) [-]
the force produced by the combustion is far greater than the weight of the piston so much so that the weight of the piston is insignificant
User avatar #113 to #93 - peggscott (01/29/2013) [-]
Again, I work on ships.... I think the way of a ships engine, and the pistons on them are MUCH bigger... the weight of the piston would not be insignificant on them....
#120 to #113 - tomob (01/29/2013) [-]
ship engines very big pistons yes pistons weigh a lot yes but it will also use more fuel in each stroke meaning more pressure meaning a larger force acting on a larger piston. its less about the size of the piston more about the ratio of the weight of the piston against the force acting upon the piston due to the increase in pressure
User avatar #143 to #120 - peggscott (01/29/2013) [-]
HFO is used, for the soul reason that it is cheap... Its not the best and the least amount possible is used, and the force needed to lift a piston of that size would more than likely blow a hole in the side after a few months... if not weeks... I would show you the size of one of the fuel injectors compared to me, but my router is ***** at the moment and I cant be ****** uploading it...
#238 to #143 - tomob (01/30/2013) [-]
alright tell me a few things and ill work it out im probably wrong in the case of large engines but i would like to work out the math to see if i am. could you tell me-

-the surface area of the piston/radius of piston im not fussy

-the amount of fuel injected into the engine each stroke

-the radius and length of the cylinder

-the mass/weight of the piston again not fussy
#239 to #238 - tomob (01/30/2013) [-]
oh and also how many pistons and how are they arranged what angle are they at relative to the deck of the ship?
User avatar #102 to #93 - snaresinger (01/29/2013) [-]
-Combustion doesn't cause force, expansion does.
-A large force acting against a small force doesn't somehow make the small force smaller. It just overcomes it.

But your idea is correct.
#107 to #102 - tomob (01/29/2013) [-]
expansion is a consequence of combustion. expansion causes pressure increase which in turn causes force on the piston therefore the force is caused ultimately by combustion.

and i never said it made the small force of the weight smaller i said it was insignificant compared to the force exerted on the piston from the rapidly expanding gas
User avatar #85 to #74 - cumsinbucket (01/29/2013) [-]
I'm not a science smart person, but the people below me make an awful lot of sense
User avatar #82 to #74 - snaresinger (01/29/2013) [-]
>implying this is just a theoretical idea OP is proposing
This is a real thing, smart guy. Radial engines are things which have already been created and used.
User avatar #87 to #82 - peggscott (01/29/2013) [-]
Fair enough, When ever I think of engines I automatically think of a ships engine... where it is much more easy and piratical to just keep a a camshaft
User avatar #231 to #87 - snaresinger (01/30/2013) [-]
True, I suppose. That's why modern engines basically all use camshafts.
User avatar #81 to #74 - arziben ONLINE (01/29/2013) [-]
those were used on WW1 planes, they ARE obsolete
#75 to #74 - Womens Study Major (01/29/2013) [-]
Have the engine horizontal.
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