I have been gong through some of my old Land Speed Record research papers, and it reminded me of something I told myself I had to look into, then forgot!
Freddie Dixon was to build a car called the Dart, quite futuristic, and to be powered by a swashplate two stroke. Now I assumed this meant a normal two stroke, i.e timing by means of a plate on the crank, alternately covering or opening the induction and exhaust ports, but apprently not.
Anyone have knowledge of quite what Dixon's swashplate two stroke was?
Swashplate Two stroke
Started by
f1steveuk
, Aug 31 2007 11:33
4 replies to this topic
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#2
TonyCotton
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Posted 31 August 2007 - 12:32
Try to get a copy of "The Development of Piston Aero Engines by Bill Gunston" - he covers a wide range of wierd engines in that, and from memory I think the swash plate engine is covered. It's also a damn good read.
#3
Cirrus
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Posted 31 August 2007 - 12:53
Have a look here...
http://en.wikipedia....ashplate_engine
I guess the 2-stroke swashplate engine had pistons on both sides of the plate
http://en.wikipedia....ashplate_engine
I guess the 2-stroke swashplate engine had pistons on both sides of the plate
#4
f1steveuk
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Posted 31 August 2007 - 12:57
Thanks chaps, the animation explains all, now to the Omega engine!!!
#5
Allan Lupton
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Posted 31 August 2007 - 12:57
As normally understood, a swashplate engine would have a number of cylinders arranged around a crankshaft, with crankshaft and cylinder axes parallell. The crank is an oblique section of its shaft with the swashplate mounted on it, and piston rods connect to that plate.
As the shaft rotates, the plate tilts cyclically (or "wobbles" giving the alternative "wabble-plate" name) moving the piston rods and hence pistons back and forth.
A drawing would help, but I can't easily find one, let alone post it!
This system is widely used for variable displacement pumps, in which case the drum of cylinders rotate and the "crankshaft" does not.
If it works, here is an animation of the crank/swashplate and piston rods.
http://thepedia.com/..._anim_metal.gif
Various engines have been built on this principle and a two-stroke, probably of the opposed-piston type, would be possible. I have no idea if Dixon had, or had had, made an engine: will try to look it up
Edited to say: others are quicker than I. pistons either side of a swash plate don't have two-stroke potential like a swash plate either side of a set of cylinders.
As the shaft rotates, the plate tilts cyclically (or "wobbles" giving the alternative "wabble-plate" name) moving the piston rods and hence pistons back and forth.
A drawing would help, but I can't easily find one, let alone post it!
This system is widely used for variable displacement pumps, in which case the drum of cylinders rotate and the "crankshaft" does not.
If it works, here is an animation of the crank/swashplate and piston rods.
http://thepedia.com/..._anim_metal.gif
Various engines have been built on this principle and a two-stroke, probably of the opposed-piston type, would be possible. I have no idea if Dixon had, or had had, made an engine: will try to look it up
Edited to say: others are quicker than I. pistons either side of a swash plate don't have two-stroke potential like a swash plate either side of a set of cylinders.
