06-07-2011, 09:44 PM
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#67
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Rotary Fanatic
Join Date: Feb 2008
Location: Slidell, LA
Posts: 191
Rep Power: 18
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Quote:
Originally Posted by vex
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What is the value of Line 1-2 for a 13B Rotary?
(Using a VE of 100)it would be 654cc...
and it would look like this, but the VE would actually be lower because of the still opened intake port and the trailing spark-plug hole spit-back.
For a KX 500 2-stroke...
500cc... and it would look like blue bore depicted. It's actual VE would be much lower also because both intake and exhaust are open for part of the stroke (Consider what the effective compression ratio while starting).
For the 2 liter Toyota….
500cc
For the 6 liter LS motor…
750 cc
These pictures are mostly for the new guys that are a little afraid to raise their hands and get into the discussion... yet.
I opened Rotarygod's web site. It is well done and he makes his case for 2X and 3X displacement, but you will notice that all references to the different engine sizes are exactly what the manufacturer calls them.
This was the point of my initial post… if we don’t use a standard way of describing the Rotary’s displacement in our discussions we will be confusing ourselves, especially neophytes.
Barry
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