I posted this a while back on another site but here it is again – any speculation on rhyme or reason for all the different sizes
??
While looking over a few engines I’ve accumulated over the years, I became curious about how many different sizes were made, so I looked at some websites and magazine advertisements – I was really surprised!
Here are some, starting with a little Diesel: (all in C.I.D.)
.009, .010, .020, .024, .039, .045, .049, .051, .06, .061, .074, .075, .09, .098, .099
.10, .11, .12, .14, .15, .19, .20, .201, .21, .23, .25, .26, .28, .29, .30, .31, .32, .33,
.34, .35, .36, .40, .45, .46, .48, .49, .50, .51, .52, .53, .54, .55, .56, .59, .60, .61, .65, .70, .72 .74, .77, .90, .91, .99, 1.08, 1.20, etc, etc,-----------.
I’m sure there are many more out there but what really got me thinking is: WHY?
? Could there possibly be some rationale? Granted, that for classification/competition, there are definite limits but what about all the “in-betweens”?
A topic for discussion/conjecture?
Bob Z